| Author | Chumlarp Tejasen |
| Call Number | AIT Thesis no.GE-99-01 |
| Subject(s) | Dam failures--Investigation--Thailand
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-99-01 |
| Abstract | Through stability and stress-strain analysis, investigation was made in order to identify possible causes of longitudinal cracks that have persistently occurred in Lam Pai Mas dam embankment since its first impoundment in 1995, four years after completion. The dam was a 30 m high zoned earth dam. Possible adverse geology was investigated by reviewing and interpreting geological data obtained during the design stage and a field check during this study but it was not found any. The type of rock and characteristics of discontinuities did not suggest that they could cause the cracks to develop. A series of slope stability analysis were made to evaluate possibility of cracks caused by insufficient stability for both circular slide through embankment materials and slides along possible existence of a near horizontal bedding shears in mudstones beds underlying sandstone in dam foundation. The results revealed that even for the worst possible input parameters of material properties, slope instability was not likely the cause of the cracks for both upstream and downstream embankments. FEM analyses were made to evaluate possibility of the cracks formed by differential settlement of dam embankment by varying loading conditions. It was found that for longitudinal cracks to form as observed, the modulus of shell had to be in the order of 1:2 of that of core materials. If the latter was smaller than the former, cracks should not form. |
| Year | 2000 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-99-01 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Noppadol Phienwej; |
| Examination Committee(s) | Bergado, D. T.;Miura, KInya;Der-Guey, Lin; |
| Scholarship Donor(s) | Royal Thai Government; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2000 |