含水层下厚硬顶板上提面采场安全开采技术研究

Research on Safety Mining Technology of Straight Overlying Stope of Hard Roof below Aquifer

基于淮南某矿上提工作面老顶岩层直接赋存煤层上方的地质开采条件,建立了四含水条件下老顶岩层破断与支架相互作用模型并进行了压架分析;采用数值计算方法给出了综采面回采过程中支架受载增阻及下缩曲线。

Based on the geological conditions of increase mining in Huainan, the interaction model main roof straight overlying stope in upper limit of the main roof breaking and powered support is developed, and mechanical analysis is made under the condition of the fourth aquifer. The curves of resistance increase and descend of support were plotted by numerical simulation during the mining of coal face.