Papers by Muh. Saleh Pallu
The development of infrastructure for public and social facilities, such as road infrastructure, ... more The development of infrastructure for public and social facilities, such as road infrastructure, has an effect on improving people's welfare, so that inequality in development between regions is an important concern and priority for infrastructure development in Papua. Community perceptions and participation in the physical realization of infrastructure development need to be input and consideration for the planning, implementation, and supervision of the Trans Papua road construction. The existence of the construction of the Trans Papua road has not been fully welcomed with support, drawing a lot of criticism from various circles of society. The lack of citizen involvement and the unknown perception of the community in planning and implementing the construction of the Trans Papua road are suspected of causing resistance and conflict. This research was conducted to find a clarity of local community wisdom that can be used as the basis for developing a participatory development approach. The research question is how the public's perception of the construction of the Trans Papua road is viewed from the socio-cultural, economic, and environmental aspects. It is found that there are differences in perceptions and understanding between local communities and stakeholders in the construction of the Trans Papua road, requiring community involvement in planning and implementing development activities. This is an effort to minimize conflicts between the community and the government, especially those related to protected forest conservation, community empowerment issues, and technical issues in road construction.
Civil Engineering Journal, May 1, 2022
Since the development of public and social infrastructure, such as road infrastructure, affects p... more Since the development of public and social infrastructure, such as road infrastructure, affects people's welfare, regional discrepancies in development are a key problem for Papua's infrastructure development. True, it's a top priority. When planning, executing, and overseeing road building, as it should be with the Trans-Papua route, public awareness and participation in the physical implementation of infrastructure development should be considered. The construction of the Trans-Papua Road drew a negative reaction and a huge amount of criticism from many social circles. A lack of community engagement in the development and implementation of the Trans-Papua Road project, as well as a public perception of ignorance, are accused of causing resistance and conflict. This research is an effort to understand better the awareness of specific communities, which may be used to design a participatory development strategy. The study's focus is on how the public views the Trans-Papua road's development from sociocultural, economic, and environmental viewpoints. The data was gathered through a survey and complemented with statistics from the local Central Statistics Bureau. The results showed that the community and stakeholders have different perspectives and understandings of the Trans-Papua road's construction, and it has been determined that the community should be involved in the planning and implementation of development measures based on the response of the local. This study demonstrates the importance of reducing communitygovernment conflicts, especially those involving protected forest conservation, community empowerment, and transportation network development. The findings of this study can be used to provide recommendations for infrastructure development, particularly in locations where native communities are at threat of conflict.
IOP conference series, Dec 1, 2022
Discharge, head, flow velocity and Reynolds number are flow parameters in pipe networks. On the o... more Discharge, head, flow velocity and Reynolds number are flow parameters in pipe networks. On the other hand, energy loss is one of the factors that affect the capacity of the pipe as a means of distributing water flow. Energy loss is caused by several factors including the roughness of the pipe walls associated with the pipe material. Due to the lack of attention to the interrelationship of these factors, sometimes there are piping networks that do not work optimally or do not function as expected. The purpose of this study was to determine the effect of changes in discharge and head on flow parameters and energy loss in the piping network. This study uses experimental research conducted in the laboratory. The primary data collection is quantitative analysis with the main data collection through measurements using a series of pipes as a test model, and is preceded by the collection of supporting data, namely the analysis of the characteristics of the water sample. The characteristics of the water samples used are density (ρ) 1,000 kg/m3, kinematic viscosity 0.804 x 10-6 m2s, dynamic viscosity (μ) 0.801 x 10-3 Nd/m2, viscosity 8.5x10-7 m2/sec, and specific gravity (y) 1.00355 gr/cm3, and a temperature of 29.50C. There are 3 discharge variations used, namely Q1 = 0.004 m3/s, Q2 = 0.003m3/s and Q3 = 0.002 m3/s and variations in head H1 = 2 meters, H2 = 1 meter and H3 = 0.5 meters. The results showed that due to changes in discharge and fall height caused an effect on flow parameters in the piping network. The greater the discharge, the greater the energy loss, and the greater the head, the smaller the energy loss. Changes in flow rate have a more significant effect on changes in energy loss when compared to changes in head.
International journal of engineering research and technology, Feb 1, 2016
Inter-island transportation plays an important role in order to strengthenen inter-island conecti... more Inter-island transportation plays an important role in order to strengthenen inter-island conectivity in Indonesia. The challenge in organizing the inter-island transportation in Indonesia is availability of ro-ro ferry corresponding to port class, traject distance and demand of transport service in each inter-island transportation network. The port class becomes constrain of ship tonage to able to operate in a route. This means that port class also become constrain for ship dimension and capacity. In orther hand, demand of transport capacity and ship speed are dependent of service transport demand and traject distance. This paper discusses regarding concept design model of ro-ro ferry. This model is formulated based on analysis results of technical specification consist of main dimension, tonnage, loading capacity and ship speed regarding operation pattern of interisland transport. The ship length and breadth are estimated by uisng matrix approach to arrange vehicle in main deck. The ship height and draught are estimated through emprical approximation of ratio between ship length and ship height and ratio between ship breadtrh and ship draught. The ship tonnage is estimated by using emprical formula. The maximum speed of ship is determined from result of resistance analysis of sample ships. The technical spefication of ship is separated base on the port class. Following the obtained loading capacity and ship speed, operation pattern and transport capacity in a certain route is determined base on port class and traject distance. Finally, model design of ro-ro ferry consist of design requirement (loading capacity and ship speed) is obtained base on demand of service transport for each route considering port class and traject distance. The main dimension is estimated base on required loading capacity. The maximum speed is determined to be validated with required speed.
Sustainable Water Resources Management, Jan 25, 2023
IOP conference series, Feb 8, 2020
Highly dynamic changes in flow regimes are caused by relatively high rainfall intensity, so that ... more Highly dynamic changes in flow regimes are caused by relatively high rainfall intensity, so that the excessive flood volume in the last ten years, and it is caused by watersheds experiencing a crisis or degradation due to conversion into economic and noneconomic areas which ultimately impacts on river bank and beds by turbulent flow. The use of groin structure as a method of scouring prevention and channel flow control has not been able to fully meet the expectations of scouring prevention. We obtain the effect of changing the turbulent flow regime on the use of groins on the bent channel. Testing was conducted through laboratory experiments in artificial conditions to investigate the relationship between variables by providing certain treatments in several experimental groups with a comparative control of bend channel angle uses 60 0 with distance variations of groins and discharge; in addition, software Surfer used to describe scour contour pattern. Analysis of changes in flow behavior is done by using Froude (Fr) and Raynolds (Re) number approaches with the effect of turbulent flow on the bent channel scour. The results of the research indicate that the placement of the groins on the river bank channel bend causes a new phenomenon of turbulent flow with shear stress, resulting in local scouring around groin structure and the placement of looser permeable groin gives prevention 81% of river bank scour.
IOP conference series, Feb 8, 2020
This article aims to determine the effect of the basic flume slope to the potential flow of debri... more This article aims to determine the effect of the basic flume slope to the potential flow of debris flow. This article discusses the combination of open check dam type (beam type) placed at the top and the closed check dam type placed at the bottom with variation of the distance between the checks of dam in a flume with the size used in the experiment that is 30 cm x 32.8 cm x 1200 cm with a slope of 10 0. The composition of the sediment used is type D50. The results of this study using three types of base flume slope are the greater the slope of the base flume will result in a greater debris flow on the condition without wood and on conditions with wood. The larger the slope, the greater the sediment and wood that passes from the check dam series. The smaller the base slope of the flume, the larger the timber being retained on the open check dam.
IOP conference series, Feb 8, 2020
Way Ruhu has a river with the slope of the land is steep. The heavy rains that often occur in the... more Way Ruhu has a river with the slope of the land is steep. The heavy rains that often occur in the city of Ambon resulted in floods and landslides in several places thus to give a big loss to the people in the city of Ambon both the loss of property and lives. This study was conducted with the aim to determine the magnitude and time of flooding in the Way Ruhu watershed, the modeling results will be applied in android so that people can evacuate early because information can be received more quickly and the Government can prepare better mitigation programs. Modeling methods are carried out using 2D software HEC-RAS 5.0.7 which requires hydrological and topographical data as the main inputs. The output from HEC-RAS is a flood map, flood height, and duration of the flood. The results of this study indicate that the time between the upstream river rise and the arrival of floodwater in the downstream is less than one hour, with flood characteristics as high as 1-5 meters and receding within 4 to 11 hours.
International Journal of Engineering, Feb 2, 2016
The present study aims to analyze the travel behaviors of traditional market's visitors in Makass... more The present study aims to analyze the travel behaviors of traditional market's visitors in Makassar City, Indonesia, such as the visitor characteristics, trip chain, and the travel attributes of the visitors. In further, the present study models the trip intensity of the traditional market visitors using the multiple linear regression approach. The study carried out an interview survey on the visitors of Niaga Daya traditional market, one of the biggest traditional markets in the city. The interview survey based on a questionnaire sheet was conducted during the operation time of the market for two days, one day of weekday and one day of weekend. The analysis results show that the majority of the traditional market's visitors are women and their profession as housewife. In addition, the trip chain of the visitors is dominated by the home-market-home pattern, and most of the visitors used a motorcycle. Furthermore, the results of the visitor intensity model to the traditional market show that the multiple linear regression model used is enough significant in the acceptance of the model. The model analysis revealed that the occupation, the household income, the travel distance, and the travel cost of the visitors have influenced significantly the visitor's intensity in conducting the shopping travel to the traditional market. The study results provide an expectation in order to develop the continued travel behavior models such as the arrival time choice and the travel mode choice models of the visitors in further studies.
The losses incurred due soils ekspansivity primarily on lightweight structures are staggering. Er... more The losses incurred due soils ekspansivity primarily on lightweight structures are staggering. Erecting moisture barrier at the road side is a combination of providing a positive treatment and construction structures necessary to control water content change in the soil layer. This study aims to determine behavior of suction, moisture barrier effects on suction head reduction, and the laboratory experimental model of suction head profile. The test model was made to resemble half of the road width with a load of 30 kPa on it, and install a concrete wall moisture barrier at road side with a depth variation of 20cm, 35cm and 50cm. Observation of time and water infiltration carried out on 8 observatories, also the amount of swelling through a dial that is placed above the concrete slab load. The results showed an increase in capillary water in front bulkhead for all variations of moisture barrier depth and water height reduction occurred in the rear bulkhead respectively 3.25%, 21.25% and 45% for the ratio of bulkhead height and expansive soil thickness h/H = 0.44, h/H = 0.78 and h/H = 1.11. Also reduction of swelling respectively by 4.46%, 52.69% and 82.53% for each ratio h/H.
IOP conference series, 2020
River conditions in Indonesia are very concerning. Furthermore, uncertain climate changes between... more River conditions in Indonesia are very concerning. Furthermore, uncertain climate changes between dry and rainy seasons, make sediment concentrations are increasing over time increase in sediment makes river utilization not optimal. The purpose of the research was to find out the flow rate of the results of field measurements using an Acoustic Doppler Current Profiler (ADCP). From the results of measurements in the field using ADCP obtained the flow velocity value in the Mamasa River is 1.362 m / sec at a depth of 3.20 m and viscosities 761.412 MPa, in Sungai Buntu Batu the flow velocity value is 2.184 m / sec at a depth of 1.99 m and viscosity of 1827 MPa, at River Mata Allo flow velocity value is 0.379 m / sec at a depth of 1.47 m and viscosity of 105 MPa, and in Pekkabata River the flow velocity value is 0.614 m / sec at a depth of 1.47 m and viscosity is 516.565 MPa. In general, the Saddang watershed has a low floating sediment level.
Civil Engineering Journal
The Trans Papua road infrastructure is not only for physical growth but also for social and econo... more The Trans Papua road infrastructure is not only for physical growth but also for social and economic improvement (social, cultural, and environmental relations). Trans Papua establishes a new economic development center that will boost the community's income but must also reduce social, cultural, and environmental issues. Increasing community and indigenous Papuan engagement reduces social disputes. Trans-development Papua raises environmental problems in addition to economic benefits. Environmental disputes are avoided by not disturbing Lorentz National Park, which has the most comprehensive biodiversity and environment in Asia and the Pacific. To achieve Indonesia's commitment to the Sustainable Development Goals, the policy model for future consequences must be examined (SDGs). This project intends to build a dispute resolution paradigm and cooperative implementation strategies for Trans Papua road development. It starts with bottom-up perception discussions, alternative ...
Zenodo (CERN European Organization for Nuclear Research), Oct 25, 2015
River works affecting channel morphology and fluvial processes can be quite varied. The timing of... more River works affecting channel morphology and fluvial processes can be quite varied. The timing of any anthropogenic effects relative to previous modifications along with the magnitude of the effect is important when trying to predict the future estuary evolution. This paper presents a case study investigating the impact of river regulation works for the assumption that rivers are self-supporting morphological systems, which adjust themselves to modify conditions. We compared the longitudinal section and cross section of Jenneberang River, South Sulawesi, prior to the river improvement work with the results of our topographic survey in December 2014. The channel cross-sections were morphometrically analyzed according to their channel widths, and cross-sectional areas. We find considerable changes in the cross sections. East of the segment river tends to be influenced by the rubber dam cross-sectional. Cross sectional 4 seems to erode 2 sides, left and right bank. Left river bank erosion, which is the outer side of the bend of the river, caused by upstream water flow. The left side of the mouth of the river is more exposed from the seaward. Propagation of ocean waves radiating into the right side of the river; eroded riverbanks causing abrasion widen the river cross section. Long section show, downstream near mouth elevation is lower than before, the slope of the river becomes 0.274% and the gradient of the river had increased. Factors that affect longterm morphology changes: change in watershed land use, channelization, river works, in-stream sand or gravel mining, diversion of water in or out of streams, natural lowering of the entire system. River regulation had modify the amount and timing of flows in the downstream Jeneberang River, where Bili-bili reservoir located on the river, holds 375,000,000 m3 of water flow. Hydraulic geometry and cross sectional characteristics of the lower Jeneberang River are influenced by natural processes of fluvial systems and human interventions.
IOP Conference Series: Earth and Environmental Science
The decrease in channel capacity can cause sedimentation at the bottom of the channel and the con... more The decrease in channel capacity can cause sedimentation at the bottom of the channel and the condition of the channel lining is damaged so that seepage / leaks occur and buildings and sluice gates do not function properly. This study aims to analyze the concentration of sediment on the flow velocity. Measurements were carried out in the field to observe field conditions in detail related to sediment velocity and concentration. This research was carried out on the Rappang Main Channel from Upstream to Downstream of the Rappang Main Channel. The distance between upstream to downstream of the Rappang Main Channel is +- 30 Km. The distance between the upstream to the center of the research point is +- 18 Km, while the distance between the middle to the downstream channel is +- 12 Km. Velocity measurement using A.OTT propeller current meter model and sediment collection in the channel using grab sampler and van dorn tools. The results showed the effect of velocity on the value of sedime...
This paper proposed a new idea in comparing two common predictors i.e. the statistic method and a... more This paper proposed a new idea in comparing two common predictors i.e. the statistic method and artificial intelligence (AI) for rainfall prediction using empirical data series. The statistic method uses Auto- Regressive Integrated Moving (ARIMA) and Adaptive Splines Threshold Autoregressive (ASTAR), most favorable statistic tools, while in the AI, combination of Genetic Algorithm-Neural Network (GA-NN) is chosen. The results show that ASTAR gives best prediction compare to others, in term of root mean square (RMSE) and following trend between prediction and actual. Keyword- Rain Prediction, ARIMA, ASTAR and GA-NN
Sebagai negara kepulauan yang memiliki pantai terpanjang didunia, Indonesia membutuhkan banyak pe... more Sebagai negara kepulauan yang memiliki pantai terpanjang didunia, Indonesia membutuhkan banyak pemecah gelombang (termasuk groin dan revetment) tidak hanya untuk melindungi pantai dari penggerusan tetapi juga demi menjaga ketenangan air di kolam pelabuhan untuk manuver kapal dan operasi bongkar-muat. Akan tetapi, sampai sekarang di Indonesia, banyak konstruksi pemecah gelombang dan revetment tidak memperhatikan teknik pantai dan manajemen dengan baik. Ada banyak pemecah gelombang, groin dan revetment yang telah dibangun untuk melindungi pantai-pantai yang kritis, tetapi perencanaan dan konstruksi tidak profesional sehingga mereka tidak bertahan lama. Contoh terdekat adalah Pantai Tanjung Bunga, Makassar. Beberapa groin yang dibangun di Pantai Akkarena rusak hanya dalam beberapa tahun. Sebuah pemecah gelombang yang terbuat dari silindersilinder beton, runtuh sebelum selesai. Penyebab kelangkaan pembangunan pemecah gelombang (yang baik) adalah biaya tinggi yang dibutuhkan akibat kesul...
The potential of statistical approach in predicting rain fall is discussed in this paper. Two mos... more The potential of statistical approach in predicting rain fall is discussed in this paper. Two most implemented methods i.e. Auto-Regressive Integrated Moving Average (ARIMA) and Adaptive Splines Threshold Autoregressive (ASTAR) are compared in term of accuracy in prediction. Both methods are constructed to predict daily rainfall in the area of Makassar, Indonesia. Rain problem in Indonesia increasingly complex due to climate shifts that result in high intensity rainfall in the dry season so it is very influential on the development of many aspect of social-economy sector. A ten years daily data (2001-2010) obtained from BMKG (the Meteorology, Climatology and Geophysics). Several complementary data is also obtained from LAPAN (Government Space Agent). From various meteorological variables, four variables are selected for predicting rainfall- There are temperature, humidity, wind speed, and previous precipitation based on their high correlation to rain event.. These four variables are...
IOP Conference Series: Earth and Environmental Science, 2020
The influences of periodically continuous tides and river discharges flowing from upstream will b... more The influences of periodically continuous tides and river discharges flowing from upstream will be responded by basic morphological form and geometry of estuaries and resulting in current pattern in estuaries. The current induced by tidal effect creates turbulences in estuaries which influence the change of configuration of stratification of seawater mass structure and suspended sediment. The intrusion of seawater from estuaries upstream in Jeneberang River and Tallo River will affect the pattern of water mass mixing which later generate patterns of current and sediments on the river. Mathematical model is a useful method to predict structural stratification of seawater mass flowing from estuaries upstream. The stages were to develop mathematical model of tidal current and mathematical model of water flow downstream.
IOP Conference Series: Earth and Environmental Science, 2020
Measuring building is one of the water construction buildings known as the sluice gate which serv... more Measuring building is one of the water construction buildings known as the sluice gate which serves to divide water according to the planned discharge by adjusting the water level. This building causes differences in inflow conditions in the upstream and downstream doors which results in the occurrence of scour around the measuring building which can endanger the construction. This research aimed at the analysis of the compressive strength of clay soil to make the scouring model on an open channel. The result showed the compressive strength of clay soil was 0,95 kg/cm 2. It is expected that the results of this test will result in interactions between the factors causing changes in flow patterns from a model that directly affects scour.
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Papers by Muh. Saleh Pallu