过老采空区水源井最佳孔位确定和安全性分析  

Optimized Borehole Location and Safety Analysis of Water Supply Well Passing Through Abandoned Goaf

作　　者：王响雷[1,2] 吴侃[1,2] 谢艾玲[1,2] 王庆云 

机构地区：[1]江苏省资源环境信息工程重点实验室(中国矿业大学),江苏徐州221008 [2]中国矿业大学环境与测绘学院,江苏徐州221008 [3]新疆地质局第一地质大队,新疆昌吉838204

出　　处：《煤炭科学技术》2009年第10期112-114,117,共4页Coal Science and Technology

基　　金："十一五"国家科技支撑计划资助项目(2006BAJ14B07)

摘　　要：为了确定峰峰矿区经过老采空区的水源井的最佳孔位，研究其安全性，利用FLAC建立数值模型，参照地表最大可能残余沉降对模型中垮落断裂带岩体进行参数调整，计算分析不同位置处水源井的竖向变形和井壁的竖向允许变形。结果表明：FLAC可以很好地模拟多煤层不同开采方法和边界组合情况下老采空区上覆岩体的移动变形情况；水源井的最佳位置是煤壁的支承影响区域；穿过老采空区的水源井，其竖向变形最大值点位于采高2～5倍的垮落断裂带内；选择K55型的钢管即可满足水源井安全性的要求。In order to determine the optimized borehole location of the water supply well passing through the abandoned goaf in Fengfeng Mining Area, the paper analyzed the safety conditions. The numerical model was set up with the FLAC. According to the maximum possible residual surface ground subsidence, the parameters of the failed fractured zone rock in the model were adjusted. The paper calculated and analyzed the vertical deformation of the water wells in different locations and the vertical allowed deformation of the water well wall. The results showed that the FLAC could be well to simulate the deformation in overburden strata above the goaf under the different mining methods in multi seams and the combined boundary conditions. The optimized location of the water well was in the support influence area of the coal wall. As for the water well passing through the goal, the max vertical deformation value was located in the falling and fracture zone 2 to 5 times higher than the mining height above the gob. The K55 steel tubes could meet the safety requirements of the water well.

关 键 词：老采空区 水源井 数值模拟 安全性分析 

分 类 号：TD325.3[矿业工程—矿井建设]