综放开采近断层导水断裂带发育规律研究  

Development Rule of Height of Water Conducted Zone Near Fault with Fully Mechanized Top-Coal Caving

作　　者：曾先贵[1] 李文平[1] 李洪亮 刘启蒙[1] 姜广路 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221008 [2]南华岩土工程有限公司,广东深圳518000 [3]兖州矿业集团兴隆庄煤矿,山东兖州272102

出　　处：《采矿与安全工程学报》2006年第3期306-310,共5页Journal of Mining & Safety Engineering

摘　　要：采用非线性有限元数值模拟方法,考虑不同断层倾角大小(75°和35°)、工作面推进方向与断层倾向关系,模拟了在断层影响下厚煤层综放开采引起的导水断裂带高度,得出了综放开采2种倾角断层、不同推进方向4种组合的导水断裂带高度随煤层开采动态发育规律示意图.模拟结果表明,当工作面从断层下盘往上盘方向推进时,在工作面过断层以前导水断裂带达到最大高度;当工作面从断层上盘往下盘方向推进时,在工作面过断层以后导水断裂带达到最大高度,并且导水断裂带发育高度在相同地质、相同工作条件下受大倾角断层的影响比小倾角断层大,在相同地质条件下,受不同推进方向的影响在大倾角断层下比小倾角断层下大.With the nonlinear finite element numerical simulation method, the height of water conducted zone near fault was simulated in fully mechanized top-coal caving face considering two different faults obliquities （75° and 35° ） and the relation between the mining direction and fault obliquity. Four kinds of dynamic height development rule sketch maps of water conducted zone with the coal mining were obtained in the condition of two different faults obliquities and different mining directions based on the simulation. The simulation results show that the maximal height of water conducted zone is reached before mining through the fault when mining from footwall to hanging-wall, and the maximal height of water conducted zone is reached after mining through the fault when mining from hanging-wall to footwall. Under the same geological and work condition, the height of water conducted zone was largely affected by big obliquity fault than that of small one. And under the same geological condition, the affected extent by the different mining directions is larger in mining through big obliquity fault than through small obliquity fault.

关 键 词：综放工作面 断层 导水断裂带 有限元 数值模拟 

分 类 号：TD823.97[矿业工程—煤矿开采]