无煤柱综采工作面沿空留巷支护方案

Support scheme of gob-side entry retaining in fully mechanized coal face without coal pillar

为了保证8305综采工作面安全高效回采,提高沿空留巷围岩稳定性,通过技术研究决定对8305综采工作面沿空留巷(5305巷)进行切顶卸压,并对其顶板提出了“恒阻大变形锚索支护+巷道临时支护”联合加强支护措施,通过实际应用,切顶卸压降低了沿空留巷顶板应力集中破坏作用,联合支护方案提高了顶板稳定性,取得了显著应用成效。

In order to ensure the safe and efficient mining of the 8305 fully mechanized mining face and improve the stability of surrounding rock in the retaining roadway along the goaf,it is decided through technical research to carry out the topping and pressure relief of the 8305 fully mechanized mining face along the empty roadway(5305 lane).The roof has proposed the"constant resistance large deformation anchor cable support+roadway temporary support"combined with strengthening support measures.Through practical application,the top pressure relief reduces the stress concentration damage of the roof along the roadway,and the joint support scheme is improved.Roof stability has achieved significant application results.