岩土力学2009，Vol.30Issue(7)：2141-2146,6.
古构造应力场数值模拟及危险性预测研究
Research on numerical simulation of paleo-tectonic stress fields and hazard prediction
摘要
Abstract
Based on the accurate determination of structural sequence and framework, a set of thinking and approaches were explored which includes establishing structure model, determining boundary conditions, selecting mechanical parameters and hazard prediction criterion of rock masses, calculating the value of paleo-tectonic stress, and predicting hazard areas and safety island. The plane stress model and three dimensional model were established by using of finite element method. Paleo-tectonic stress acted on Chengzhuang mine were simulated from its loading way and loading value. By the joint of rock of earth surface and coal bed ,we can calculate its internal frictional angle and ability of resistance to distortion, and obtain the critical region, risk region and safety region of ground surface and coal seam 3#. Combined with the structural features of joints, faults, folds, and subsided columns of studying area, we can integrate forecast the hazard zonation of the mine. The prediction results reveal that there are two large stage paleo-tectonic movement at Chengzhuang Coal Mining Area of Jincheng in Shanxi province; first with the north-south direction and later with west -east direction, first loading 60 MPa toward west-east and later loading 110-180 MPa toward north-south, the possible hazard area separated into eastern zone and western zone. The conclusions have important significance for the prediction of coal rock mass stress concentrated zone and gas outburst area.关键词
古构造应力/构造模拟/危险性预测/节理/岩体力学Key words
paleo-tectonic stress/ tectonic modeling/ hazard prediction/ joint/ rock mass mechanics分类
天文与地球科学引用本文复制引用
周春梅,章泽军,徐大杰,王生维,李先福..古构造应力场数值模拟及危险性预测研究[J].岩土力学,2009,30(7):2141-2146,6.基金项目
国家自然科学基金项目(No. 50874080,No. 40672187) （No. 50874080,No. 40672187）
武汉工程大学校青年基金项目(No. Q200805). （No. Q200805）
