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Research on Ground Subsidence Law Using FEM for Comprehensive Mechanized Caving Coal Mining under Railway
With the project of mining 701 Working Face of Baojianshan Coalmine of Jingyuan Coal Industry Group undermine special railway as a background, the authors predict ground subsidence law caused by routine comprehensive mechanized caving coal mining method and back filling method with elastic-plastic nonlinear FEM method. By different exploitation methods, development law of horizontal displacement, vertical displacement, shift angle of strata during mining is given. According to predication by FEM method, the maximum vertical settlement of subsidence area near railway subgrade is 7cm, which is caused by mining 701 Working Face. The in-situ monitoring results were essentially identical with the FEM predication value, this indicates that FEM predication is reliable. The rehabilitation technical measure of railway bed and deformation monitoring scheme of railway during long-term operation are advised.
Research on Ground Subsidence Law Using FEM for Comprehensive Mechanized Caving Coal Mining under Railway
With the project of mining 701 Working Face of Baojianshan Coalmine of Jingyuan Coal Industry Group undermine special railway as a background, the authors predict ground subsidence law caused by routine comprehensive mechanized caving coal mining method and back filling method with elastic-plastic nonlinear FEM method. By different exploitation methods, development law of horizontal displacement, vertical displacement, shift angle of strata during mining is given. According to predication by FEM method, the maximum vertical settlement of subsidence area near railway subgrade is 7cm, which is caused by mining 701 Working Face. The in-situ monitoring results were essentially identical with the FEM predication value, this indicates that FEM predication is reliable. The rehabilitation technical measure of railway bed and deformation monitoring scheme of railway during long-term operation are advised.
Research on Ground Subsidence Law Using FEM for Comprehensive Mechanized Caving Coal Mining under Railway
Wang, Yang (author) / Li, Qing-Yuan (author)
2012
5 Seiten
Conference paper
English
Caving and underground subsidence
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