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Asymmetrical bolt-mesh support technique of deep soft-rock roadway under complex conditions

机译:复杂条件下深部软岩巷道不对称锚网支护技术

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On the isolated mining face, the strength of the coal pillar obviously degraded since the coal pillar near to the gob was under the influence of the abutment pressure by the two sides of the recovered coal face. Thus, the differences of the deformation of the two roadway sides were remarkable. Based on the field experiments and numerical simulation on the isolated coal face in a coal mine of Shenyang Coahnine Company,the stability problem of deep soft rock roadway was successfully solved by using the asymmetrical bolt-mesh support technique. Numerical simulations and field experiments show that the deformation of the two sides of the roadway became compatible and coordinate. And it can also effectively control the convergence of the soft rock roadway. The research results can be very useful for the soft rock roadway support in the coal mines with the similar conditions.
机译:在孤立的采煤工作面上,由于靠近采空区的煤柱受到采煤工作面两侧的邻接压力的影响,煤柱的强度明显降低。因此,两个巷道侧面的变形差异非常明显。通过沉阳煤矿公司某煤矿孤立煤层的现场试验和数值模拟,运用非对称锚杆支护技术成功解决了深部软岩巷道的稳定性问题。数值模拟和现场试验表明,巷道两侧的变形变得协调一致。并且还可以有效地控制软岩巷道的收敛性。该研究结果对于相似条件下的煤矿软岩巷道支护非常有用。

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