专线铁路下采煤地表沉陷规律数值模拟研究

Numerical Simulation Research of the Surface Subsidence Laws under Special Railway Line of Coal Mining

采用有限元法研究了宝积山煤矿701综放工作面专线铁路下采煤引起的地表沉陷规律,给出了随着开采的进行地表水平位移、竖向位移的发展规律。现场监测表明,有限元计算得到的沉陷量与实际沉陷量基本一致,有限元计算模型的建立及参数的确定是合理的。计算结果对710工作面的正常开采具有重要意义。

The earth surface subsidence rule in mining coal under special railway line at fully mechanized sub- level caving face 701 of Baojishan mine with finite element method is studied.The laws of the development of the earth surface horizontal and vertical displacement with mining are given.The monitoring results indicate that the cal- culation subsidence is consistent with practical subsidence.The finite element calculation model and parameter is rea- sonable.The calculation result is very important for the normal mining on 701 work face.