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International Association of Lowland Technology In Collaboration with Hasanuddin University and Saga University Address Faculty of Engineering, Center of Technology Building, 1st Floor Jalan Poros Malino km. 6, Bontomarannu, Gowa Indonesia Postal Code: 91711
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Lowland Technology International
Published by International Association of Lowland Technology
ISSN : 13449656     EISSN : 21878870     DOI : https://doi.org/10.0001/ialt_lti
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
The Lowland Technology International Journal presents activity and research developments in Geotechnical Engineering, Water Resources Engineering, Structural Engineering, Transportation Engineering, Urban Planning, Coastal Engineering, Disaster Prevention and Mitigation Engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 463 Documents
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Catastrophic Debris Flows in Kazbegi Mountain Area, Georgia – Use of Available Free Internet Information to Generate Conceptual Engineering Geological Model M. Dostalik; J. Novotny; O. Kurtsikidze; G. Gaprindashvili
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

This paper presents how much valuable data is freelyavailable from the Internet to be efficiently used together withthe interpretation of internet maps and 3D visualizations toanalyse geological hazard of some areas in the sense ofconceptual engineering geological model generation. Theexample presented here is of the Kazbegi Mountain area inGeorgia near the border with Russia. The area in question isfamous for abundant debris flows with some of them being verycatastrophic and associated with melting glaciers. There weretwo tragic events in the recent past in the Dariali Gorge east ofthe Mkinvartsveri (Kazbegi) peak in 2014. Using the internetinformation together with geological experience it can be easilyanticipated what may happen in the future within the area due toslope movement hazards. Dangerous areas possibly to beaffected by debris flow (mud flow) in the future may be definedand thus cost-effectively provide the first step to avoidconstructions in these areas to eliminate the loss of human livesand destruction of property
Status of Foreign Aid to Nepal’s Earthquake-2015 K. Shakya
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

Nepal is victimized by different types of natural disasters, likeearthquakes landslides, floods and others. On 25th April and May12th, 2015, Nepal had 7.8 and 7.3 magnitude respectivelyearthquakes that struck central of Nepal. The objective of thepaper focuses on status of foreign aid to Nepal’s earthquake-2015. The paper presents the donor’s commitment anddisbursement during the earthquake -2015 in Nepal. Therefore,the study is descriptive, analytical and exploratory. The study isbased on secondary data information from different sources.The powerful tremor and aftershocks led to the loss of close to9,000 lives, injured over 23,000 people, fully destroyed over half amillion homes, displaced over 60,000 people. It resulted in totaleconomic losses of approximately US$ 9 billion. It has been foundthat altogether 34 countries physically responded to the disaster,17 of which sent their respective military teams to assist in theimmediate search and rescue phase. Bilateral aid in terms ofrelief items as well as financial aid was received fromapproximately 70 countries worldwide. There is a hugecommitment and disbursement of foreign aid to earthquake’sNepal-2015. However, it has been found that the commitmentsare much higher than disbursement in earthquake- 2015 inNepal. Although, after two years of the earthquakes, only abouthalf the money pledged to Nepal by donors
Slope Failure Due to Effect of Damrey Typhoon in Penang Island F. Ahmad; A.S. Yahaya; M Azmi; N. Muztaza
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

The monsoon season in month of November till December in2017 has left Penang Island in devastated conditions where, hillslope landslide, erosion and flood took place around Penang.This was a monsoon season, however these occurrences werenot normal and Penang has accounted many slope failure,building construction collapse and flash floods. A series of failureoccurred at the surrounding slope at USM has occurred over thepast 10 years and therefore remedial work were carry out toimprove the slope on site. During the seasonal rainfalls, the slopewas heavily eroded and all the trees and grouted slope whichwas in placed before, fail to sustain from the water movement.Then a series of Soil Resistivity test on site was then explored toforesee the major problems and to counter the stability. By doingthis investigation, the purpose is to understand, analyse andrectify the situation of slope failure. From this study, we haveconducted the soil mapping of the ground to further understandthe soil condition so that all the
Earthquake Resistant Assessment of Building Construction Technique in the Nayagaun Settlement of Kavre before Gorkha Earthquake R. Pradhan; P.M Pradhan
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

The major earthquake on April 25, 2015 (7.8 Mw) and theaftershock on May 12, 2015 (7.3 Mw) caused severe damages onthe Nayagaun settlement of Dhulikhel Municipality, Kavre. Thisstudy proposes to highlight the extent of damages in the buildingsdue to the absence of the earthquake resistant components. Inthis study, the suitability of the building construction techniques inthe study area has been addressed after knowing theconsequences faced due to the absence of the earthquakeresistant components in the buildings. This study provides idea onthe earthquake resistant components and its significance in theresidential buildings during the earthquake period. In this study,the types of the buildings damaged are tabulated according to thetypology of the buildings whereas the type of damages incurredare categorized based on the grade of damages (partiallydamaged or fully collapsed). Some mitigating measures areidentified throughout the study to overcome the futureearthquakes
Stress and deformation analysis of powerhouse cavern of Rasuwagadhi hydroelectric project, Rasuwa, Central Nepal N.B K; S. Panthee
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

An underground powerhouse cavern of RasuwagadhiHydroelectric project lies in Bhotekoshi River, northern part ofRasuwa, Central Nepal. Letter box shaped cavern of maximumdimension 76.6 m in length, 15.3 m in width and 39.65 m inheight is situated at the depth of 320 m with its longitudinal axisof east to west. Geologically, the area belongs to the rock of thequartzite with intercalation of dark grey schist of HigherHimalayan succession. To determine different properties unitweight, point load strengths of rock samples were done for themodel analysis. The rock mass properties based on GSI wererecorded in different chainage of cavern. By using variousgeotechnical property, and numerical methods deformationanalysis of cavern was done. The analyses were carried byusing 3-Dimensional and 2-Dimensional numerical modelingfrom Examine3D and Phase2 softwares and then the modelingresult were compared with the instrumented data from multi-pointborehole extensometers. The deformation from both numericalmodel and instrumental data showed similar results
Slope Stability Monitoring Using GSM Network System R.C. Omar; H. Taha; N.H.N Khalid; R. Roslan; I.N.Z. Baharuddin; F. Ahmad
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

Slope failure due to slope instability can initiate landslides whichmay result in loss of lives, property, infrastructures and economicloss. There are many factors that trigger slope failure such asrainfall, hydrological condition, groundwater level and geologicalformation of the slope area. However, slope failures can beprevented by monitoring high risk slopes using geotechnicalinstruments and electronic sensors. In this study, an early warningsystem was developed to immediately alert the authority and themanagement on slope stability by installing selected slopemonitoring instruments at high risk slopes with infrastructures.Slope monitoring system using wireless network is an effectivemethod to monitor the condition of slopes especially theinaccessible slopes in unsafe areas. By applying this system, themanagement can reduce cost, human resources and time onslope maintenance that can efficiently notify themaintenance team on potential unsafe slopes or slope failures
Virtual Geo-Hazard Monitoring andAsset Management System (ViGMAS) R.C. Omar; H. Taha; R. Roslan; I.N.Z. Baharuddin; M.M Fared; W.S.W Hashim
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

This paper describes a virtual geo-hazard monitoring and assetmanagement system (ViGMAS) which implements a near realtimesatellite image processing system to extract relevantenvironmental and meteorological parameters. The systemfocuses on geo-hazard monitoring by accumulating informationabout the earth using remote sensing technologies which can beapplied in disaster risk management. This system also includesasset management program for managing assets by inventoryand assessment through integration with Geographic InformationSystem (GIS). Mapping and inventory by GIS help to improveefficiencies and assist in decision making based on gathereddata. The system was designed to manage preliminaryconstruction and management planning, health performance, riskand costs of management asset through 4D visualization whichintegrates existing data and primary data obtained from a dataset of mapping terrain and satellite that will fit in the system ofvirtual reality
Evaluation of Rock Slope Deterioration Based on Granite and Schist Rock Slopes R. Roslan; R.C. Omar; H. Taha; I.N.Z. Baharuddin; F. Ahmad
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

The problems of slope instability can be related to the terrainfactors and weather. In Malaysia, slope failures and landslidesare very common due to prolonged monsoon rainfalls. Theconsequences of slope instability can be hazardous to lifeincluding economic damages and costly repairs. The study wasaimed to determine the physical and mechanical properties ofthe rock slope material from selected sites. Several testsincluding field observations were performed to analyze theengineering characteristic and physical properties of this Schistrock slope and Granite rock slope. The rock samples wereclassified into various weathering grades based on variations inthese properties. Scan line methods were applied to obtain themeasurement data. Direct discontinuity surveys were carried outin interval of 10 m. Laboratory tests on the samples were donethat include two cycles of slake durability, Schmidt hammer test,point load test, petrography test, density test and direct shearbox test. The analysis on each rock types showed that theamphibolite Schist at Putrajaya has the highest rock strengthwith a uniaxial compressive strength (UCS) 487.97 Mpa which isclassified as extremely strong rock. By comparison, the UCSvalue of Granite was 267.28MPa and classified as strong rock
Slope Instability Evaluation Using Geophysical Methods of Gua Musang-Cameron Highland Highway M.T Zakaria; N.M Muztaza; H. Zabidi; F. Ahmad; T.O Adeeko; N Ismail; N Samsudin
Lowland Technology International Vol 22 No 1 (2020): Lowland Technology International Journal - Special Issue on: Engineering Geology
Publisher : International Association of Lowland Technology

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Abstract

Slope failure is a complex phenomenon that may trigger theoccurrence of slope failure due to several factors. The internalstructures and mechanical properties of subsurface areimportant parameters to investigate as a pre-requisite analysis.Four parallel survey lines of 2-D resistivity and two lines ofseismic refraction were designed in order to achieve theobjectives. The model shows the resistivity values covered of 1-4000 Ωm with investigation depth of 20 m. Highly weatheredzones were identified at values of 400-450 Ωm while saturatedzones with values of <100 Ωm. The high resistivity regions withvalues of 1500-2500 Ωm indicates the weathered granite for thisarea. The 2-D seismic refraction model shows velocity valuesranging between 200-2800 m/s and depth coverage about 30 m.The result interpreted as 3 layer cases with 1st layer, 2nd layer,and 3rd layer identified at velocity of 400-600 m/s, 800-1400 m/sand >2000 m/s respectively. The low resistivity and velocityindicate as highly fractured/crack zones which able to decreasesthe shear strength of the slope soils and increases the hydraulicconductivity of the soils. The saturated zone and infiltration withthe existence of boulders indicates the factor for the occurrenceof slope failure.
Geometric Registration of High Spatial Resolution Images Based on Google Earth Image and Global DEM Data J T Zang
Lowland Technology International Vol 22 No 2 (2020): Lowland Technology International Journal
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0001/ialt_lti.v22i2, Septemb.871

Abstract

With the development of remote sensing technology, theapplication of remote sensing technology is expanding. Beforethe application of remote sensing images, geometric registrationand other preprocessing are often required for tilt correction andprojection error correction, which often requires the selection ofground control points. Given the lack of measured groundcontrol points, the correction accuracy will be greatly limited. Inthis paper, a remote sensing image orthographic correctionprocess based on Google earth and Global DEM is proposed.First, in ENVI5.3, the image to be corrected and the referenceimage (Google Earth image) were automatically matched withthe corresponding ground object points to obtain the coordinatefile of the correction control point (.pts), and the coordinateswere converted to plane coordinates. Under the ArcGIS10.2platform, the data of the coordinate table of the correctioncontrol points were converted into the ArcGIS point file (SHP).Finally, the point file was spatially superimposed with theelevation data of Global DEM to obtain the elevation value, andthen the ground control point file with elevation value wasobtained, and then the orthographic correction with controlpoints was carried out. The result showed that compared withthe orthophoto correction without control points, the processingprocess adopted in this paper can improve the accuracy ofcorrection, and the accuracy can meet the requirements of the1:10000 land survey in the working base map. This research isexpected to provide a new method for obtaining high-qualitydigital orthophoto images needed for land surveys.

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