长壁留煤柱支撑法开采存在的问题

Existing problem on longwall remaining coal pillars support mining

通过“连续梁”力学模型计算和RFPA2D数值模拟,分析了“顶板-煤柱”相互作用下的破坏机理,并提出了解决采用长壁留煤柱支撑法开采时产生的2个问题的方案:在限定的开采区域内开采时,通过监测关键点防止工作面内切顶事故的发生;隔离区域形成后,通过监测关键区,防止顶板形成跨几个区域的大面积悬而不垮的局面.

According to the calculation of ＂continuous beam＂ mechanics model and RFPA2D numerical simulation, analyzed the destruction mechanism under the interaction of ＂ the roof-coal column ＂, and proposed solving the schemes of two problems when adopt longwall remaining coal pillars support mining： while exploiting in definitely exploitation area, through monitoring the key point, it will prevent workplace from cutting roof accident. After isolating area takes shape, through monitoring the key district, it will prevent the large area roof not to collapse complexion.