| Author | Pricha Sonkaeo |
| Call Number | AIT Thesis no.GE-13-01 |
| Subject(s) | Rock mechanics--Evaluation--Indonesia
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| Note | A thesis submitted in partial fulfillment of the re quirements for the Degree of Master of Science in Geotechnical and Ear th Resources Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-13-01 |
| Abstract | The data gathering for slope evaluation consist of geologic structure, groundwater conditions, shear strength parameters, lithological data and weak plan layers at low wall slope. The coal mine locate at limb of syncline wit h several bedding dip range from 10 degree to 50 degree. The rock types are divided int o 6 groups such as 29% sandstone, 42% siltstone, 19% claystone, 3% carbonaceous clay 3% t op soil and 4% coal. Therefore, the parameters to input slope evaluation is weak layer thickness are range 1m to 20m, groundwater level at 20m below ground surface, the mean shear strength for overburden are consist of 22.32 kN/m 3 , 344 kN/m 2 , and 2 degree for bulk unit weight, cohesion, and internal friction angle respectively. For high wall slope, mode of failure is circular mo de and it is analyzed by using Bishop Method. While mode of failure of low wall slope is plane failure along weak plane layer under coal and it is analyzed by using Janbu Method . The slope evaluation result of high wall is shown b y the relationship between mine pit depth and overall slope angle. The slope design cha rt with factor of safety 1.2 showed the optimum overall slope angle at 70 degree and 20 deg ree of mine pit depth at 60m and 200m respectively. For low wall slope, the results of slope evaluation showed the relationship among bedding dip, weak plane thicknes s, and mine pit depth. The conclusion for low wall slope is low wall slope will be stable in case of dip angle of coal seam less than 20 degree. In case of dip angle of low more th an 20 degree, mine operators need to remove all weak soils below coal seam for protectio ns sliding while operate. |
| Year | 2014 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-13-01 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Noppadol Phien-wej; |
| Examination Committee(s) | Pham Huy Giao;Tian Ho Seah; |
| Scholarship Donor(s) | Banpu Public Company Limited, Thailand; |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2013 |