基于黄陵一号煤矿UDEC高位钻孔优化设计应用研究

Application research on optimization design of high position drilling based on UDEC in Huangling No.1 Coal Mine

为对黄陵一号煤矿工作面高位抽采钻孔参数进行合理优化,应用UDEC软件对工作面采空区上覆岩层的运移和裂隙延展进行了数值模拟,模拟得出了上覆岩层冒落带和裂隙带的裂隙延展范围;对高位钻孔抽采的最佳布孔层位进行了现场测定考察,结合数值模拟和现场考察结果,确定了两带的高度范围和高位钻孔抽采的最佳抽采层位,实现了对高位钻孔瓦斯抽采参数的合理优化。

To optimize the parameters of high position drilling of Huangling No.1 Mine work face,UDEC is utilized for numerical simulation of migration and fracture extension of overlying strata above the goaf,coming up with the extension of fracture zone and caving zone of the overlying strata;the optimum drilling position and distribution were measured on site,numerical simulation and in-situ measurement results accounted for the height extension of fracture zone and caving zone and the optimum drainage position of high position drilling,realizing optimization of the drainage parameters of high position drilling.