松软巷道底鼓治理技术应用

Treatment Technology and Application of Bottom Bulging in Soft Roadways

随着煤矿开采深度的不断增加,矿井地压也随之增大,在采动影响下,应力将重新分配,造成巷道围岩的挤压变形。对此,大阳煤矿根据3号煤层实际情况,提出了三种底鼓治理方案,最终选择了底板中部切槽+底角锚索的支护方式。经实践证明,底鼓最大形变量24 mm,并在30 d内趋于平稳,取得了较为理想的实践效果。

With the continuous increase of coal mining depth,the ground pressure in the mine also increases.Under the influence of mining,stress will be redistributed,causing compression deformation of the surrounding rock of the tunnel.Based on the actual situation of Coal Seam 3,Dayang Coal Mine proposed three types of floor heave treatment plans,and ultimately chose the support method of cutting grooves in the middle of the floor and anchor cables at the bottom corners.Practice has proven that the maximum deformation of the floor heave is 24 mm,and it tends to stabilize within 30 days,achieving ideal practical results.