Simple One-Dimensional Dam Breach and Flood Route Models for Tributary-Dammed Lake: A Case Study of the Laonong River in Southern Taiwan
Constructing Approximated Three-Dimensional Fracture Surfaces of Deep- Seated Landslides by Using Volume Constraints and Smooth Minimal Surfaces
50(4):143-153Chih-Yu Kuo  Ya-Hsin Chan  * Pi-Wen Tsai  Rou-Fei Chen 
Yih-Chin Tai  Ching-Weei Lin  Show preview
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|Constructing Approximated Three-Dimensional Fracture Surfaces of Deep- Seated Landslides by Using Volume Constraints and Smooth Minimal Surfaces|
|Chih-Yu Kuo  Ya-Hsin Chan  * Pi-Wen Tsai  Rou-Fei Chen 
Yih-Chin Tai  Ching-Weei Lin |
Because of the large number of potential deep-seated landslides in Taiwan, for slope hazard mitigation
planning, automated tools are necessary for assessing crucial landslide scarp parameters in a cost-effective manner.These landslide scarp parameters include landslide volume, shape, fracture surface depth, slope stability, and affected areas. This study proposed a method of constructing approximated three-dimensional (3D) fracture surfaces by using landslide volume and the minimal smooth surface method in which landslide volume is considered enclosed by minimal smooth surfaces and free slope surfaces. Through optimization, the minimal smooth surface can be calculated, with its circumference conforming to the observed scarp boundary. To verify applicability, we applied this method to two landslides sites in the Jiasian District of Kaohsiung City, and the preliminary assessment results indicated that this method is feasible for practical applications. In the future, a predicted 3D sliding landslide mass can be directly incorporated into slope stability analysis, landslide motion simulation, and other applications.
Key Words: minimal smooth surface, deep-seated landslide, fracture surface estimation
〔1〕Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan, R.O.C.
〔2〕Department of Mathematics, National Taiwan Normal University, Taipei, Taiwan, R.O.C.
〔3〕Department of Geology, Chinese Culture University, Taipei, Taiwan, R.O.C.
〔4〕Department of Hydraulic and Ocean Engineering, National Cheng Kung University, Tainan, Taiwan, R.O.C.
〔5〕Department of Earth Sciences, National Cheng Kung University, Tainan, Taiwan, R.O.C.
* Corresponding Author. E-mail :
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