麻家梁煤矿复合型软岩巷道支护技术研究及应用

 复合型软岩巷道在施工过程中难以支护，巷道经常出现顶板下沉脱落、两帮收缩、底板鼓起等变形破坏现象，变形破坏严重时，巷道甚至无法使用，严重影响安全生产。本文基于麻家梁矿中央水仓施工过程中揭露出来的泥岩、碳质泥岩呈现大变形、难支护的特点，通过对麻家梁矿中央水仓巷道破坏机理的研究，提出了先采用常规锚网索喷支护，然后增加钢筋混凝土浇筑，同时对巷道底板采用钢筋加混凝土铺底的联合支护技术。现场实践表明，该支护方案满足软岩巷道对支护刚度和强度的要求。

Application and study on composite soft rock roadway support technology of Ma Jialiang coal mine

Composite soft rock roadway is difficult to support in the construction process, roadway often appear phenomenon of deformation and failure, just as The roof sank off, between two contractions, backplane muster, etc. What is more, roadway can not even use, seriously affecting production safety. This article is based on Ma Jialiang central water storage exposed mudstone, carbonaceous shale showing large deformation, difficult to support features during construction. Study the failure mechanism of Ma Jialiang central water storage, proposed the following supporting: Bolt, Anchor, anchor rope, metal mesh and shotcrete support first, then increase the reinforced concrete poured, at the same time, the roadway floor laying steel plus concrete. Field practice show the support program to meet the requirements of the soft rock roadway retaining stiffness and strength.