摘要
在分析祁东井田地质条件基础上,利用RFPA2D分析系统对不同地应力条件下,由于煤层开采引起煤层顶板覆岩发生的损伤演化和应力场调整的过程进行了有限元分析。据此分析研究了工作面覆岩破坏规律,确定了"两带"发育高度。利用简易水文观测法得到的"两带"发育高度值对模拟计算结果进行了验证,得出了3224工作面两带发育高度和规律的结论。
On the basis of analyzing the geology conditions of Qidong well field, using the RFPA2D analysis system, we have carried on the finite element analysis to the adjustment process of stress field and the damage evolution of the coal bed roof which was caused by coal bed mining. According to the above analysis, we have studied the destruction rule of working surface rock and determined the ＂two belts＂ growth altitude. Using the ＂two belts＂ growth altitude which was obtained by the simple hydrology view measurement , we carried on the confirmation to the analog computation result and have obtained the conclusion of the ＂two belts＂ growth altitude and rule of the 3224 working surfaces.
出处
《煤矿安全》
CAS
北大核心
2007年第8期10-13,共4页
Safety in Coal Mines
关键词
RFPA2D
数值模拟
导水裂隙带
RFPA2D
numerical simulation
water flowing fracture zone
