摘要
针对刘桥矿岩浆岩侵入条件下首采工作面超前支承压力进行了研究,采用UDEC数值模拟软件分析了回采期间顶底板应力场的变化特征及超前支承压力分布规律。采空区支承压力接近原岩应力,回采工作面明显处于卸压区,回采煤体前方形成应力集中区。并使用钻孔应力计对回采煤体超前支承压力进行了实测分析,进一步研究了超前支承压力分布规律,为首采面的安全回采提供了技术支持。
According to the conditions of the magma incursions in Liuqiao Mine,a study was conducted on the advance support pressure of the first coal mining face in the mine.A UDEC numerical simulation software was applied to analyze the variation features of the roof and floor stress field during the mining period as well as the advance support pressure distribution law.The support pressure of the goaf was closed to the in-situ rock stress.The coal mining face was obviously in a pressure releasing zone.There would a stress concentrated zone formed at the front of the coal mining face.The borehole stress mater was applied to the site analysis on the advance support bearing pressure in order to further study the distribution law of the advance support bearing pressure and to provide the technical support to the safety mining of the first mining face.
出处
《煤炭工程》
北大核心
2011年第3期97-98,101,共3页
Coal Engineering
关键词
首采工作面
支承压力
分布规律
数值模拟
first coal mining face
support pressure
distribution law
numerical simulation
