鹿台山煤矿切顶卸压沿空留巷技术应用

Application of Gob-side Entry Retaining Technology for Roof Cutting and Pressure in Lutaishan Colliery

以鹿台山矿2202工作面开采为工程实例,拟对其2202轨道巷采用切顶卸压与沿空留巷技术;通过对回采面切顶卸压技术分析并拟定切缝、钻孔、装药等各项技术参数;针对现有巷道支护方式不足,决定采用“主动支护+被动支护”的组合补强支护方案;对2202轨道巷变形情况进行了现场监测,其变形量均在可控范围内;切顶卸压和组合补强支护应用取得了良好效果,提高了资源回收率,可在鹿台山矿推广应用。

Taking the mining of 2202 working face in Lutaishan Colliery as an engineering example,the paper proposes to adopt the technology of roof cutting pressure relief and gob-side entry retaining for its 2202 track roadway,analyses the roof cutting pressure relief technology of the mining face and formulates various technical parameters such as slitting,drilling,charging,etc..In view of the lack of existing roadway support methods,it also puts forward the combined supplement support of"active support+passive support".The application has achieved good results and improved the resource recovery rate,which can be popularized and applied in Lutaishan Colliery.