压力集中区三带支护圈的研究及应用

Research and Application of Three Zones Supporting Ring in Pressure Concentrated Area

通过对煤矿掘进巷道压力集中区域顶板三带(冒落带、裂隙带、弯曲下沉带)的研究,结合锚杆支护悬吊、组合梁理论及承载圈支护理论,经过验算、选择,确定了煤矿巷道压力集中区三带之弧圈的支护形式,在总回下山巷道进行实践应用,取得良好效果。

This paper studied three zones such as caving zone, fissure zone, bending and sinking zone in the pressure concentrated area of tunnels in the coal mine. Combined with the theory of bolt supporting suspension, composite beam and bearing ring support, this paper determined the supporting form of three zones in the pressure concentrated area of tunnels in the coal mine through checking calculation and selection. And the practice and application in the general returning roadway were carried out and had achieved good results.