稳定顶板“倒梯形”煤巷优化设计

Optimization design about roadway of inverse trapezium cross-section under stable roof

本文通过理论计算,对顶板稳定、两帮较软的顺槽形状、尺寸进行优化设计,优化结果为“倒梯形”断面,进而又对采用锚杆支护形式下的该巷道稳定性进行数值模拟研究。现场实践表明,本文确定的巷道形状及支护参数能满足生产和安全需要,对类似条件下的巷道有一定的推广应用价值。

This paper,through theoretical calculation,optimized the shape and size of the roadway cross-section in case of stable roof and soft ribs.The conclusion is that inverse trapezium is the optimum form of the cross-section.The numerical simulation about this roadway with bolt supporting is also done.The practical engineering shows that the roadway shape and the support parameters introduced in the paper can fulfill the requirement of production and safety.