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| 099 | 9 | _aAIT Thesis no.GE-02-03 | |
| 100 | 0 | _aMongkol Lukmuang | |
| 245 | 1 | 0 | _aCharacteristics of landslides resulted from extreme rainfalls in Loei and Mae Hong Son provinces, Thailand |
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_aPathum Thani, Thailand : _bAsian Institute of Technology, _c2003 |
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_a120, [11] leaves : _bill. |
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| 490 | 1 |
_aThesis ; _vno. GE-02-03 |
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| 502 | _aThesis (M.Sc.) - Asian Institute of Technology, 2003 | ||
| 500 | _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Engineering and Technology | ||
| 520 | _aThailand had been suffering from landslides and debris flow for long time. In the year 2002, heavy rainfall during August and September had caused flash floods and in 49 provinces in the North, Northwest, Northeast, Central Plains and East of Thailand. The study is focused on landslides, which occurred in Phu Rua and Wang Saphuang district, Loei Province, the NE-Thailand and at the Refugee camp in Mae Sariang district, Mae Hong Son Province in the NW-Thailand during August to September 2002. Ninety-seven people were reported killed. The Mesozoic of Khorat Group, which comprises sub-horizontally red bedded elastic sedimentary rocks, builds up the Loei area affected by landslides and the Mae Sariang area is built up by Permian Limestone. The involved geomaterials are residual soils and completely weathered rock. The sheet-slides occurred in sandy soils (completely weathered rock), the rotational slides can be found in clayey-silty materials, and colluvium (clayey gravel). Rainfall data revealed that the slides occurred after long-lasting rainfalls (600 mm in 2 months in Phu Rua), which suggest that a complete saturation of the involved soils is required to cause landsliding in this area. The detailed study had been carried out the characteristic profiles of natural landslide sites. The number of thirteen profiles is represented: Seven profiles studied at Phu Mafuang (MF) area in Phu Rua district. Four profiles were studied at Ban Mak Khang (MK) area in Wang Saphuang district. The area is subdivided in two sub-regions. Finally, two profiles were studied at the Refugee camp (RF) area in Mae Sariang district, Mae Hong Son Province, NW-Thailand. Those are the events in the period of September 2002. Especially, at the latter area, a debris flow through two refugee camps killing at least 16 people, 30 still missing and 200 refugee shacks destroyed. A table summary of landslides characteristics in these areas has provided, including the dimensions of landslides and cross section to estimate the volume of slide and apparent friction angle ( ~ ). In the Loei Province both simple to multiple and complex landslides were observed here and there. The size of the slides varies widely. At the top of the hills where slopes are steep, mainly shallow translational slides were observed. Complex and multiple rotational slides were occurred at downhills. Slight up heave and sand extrusions were found at the base of few rotational slides. Multiple retrogressive slides, small step sliding and tension cracks were observed frequently. More than 2 m high sliding were observed at number of places. In the Mae Hong Son Province, at Karen Refugee Camp detailed investigation at two landslides sites were carrying out. The complex slide and sheet slide were occurred down. | ||
| 650 | 0 | _aLandslides | |
| 700 | 1 |
_aGlawe, Ulrich, _eChairperson |
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| 700 | 0 |
_aNoppadol Phien-Wej, _eExamination Committee |
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| 700 | 1 |
_aPark, Kyung Ho, _eExamination Committee |
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| 710 | 2 |
_aRoyal Thai Government (RTG) by National Science and Technology Development Agency (NSTDA), _eScholarship Donor |
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| 810 | 2 |
_aAsian Institute of Technology. _tThesis ; _vno. GE-02-03 |
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_3Full-Text _u http://203.159.5.9/ait-thesis/detail.php?q=B08314 |
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