中文摘要：

针对强膨胀性极破碎围岩半煤岩巷出现的大底臌、折帮和顶板下沉等变形破坏和支护困难的问题，运用力学理论分析、数值模拟分析和现场试验研究相结合的方法，研究了巷道变形破坏机理及其控制策略。研究表明：在原以工字钢拱架为主的被动支护条件下，巷道变形破坏受到吸水膨胀、软弱夹层、节理等弱结构面多重影响，巷道变形破坏严重。提出了“全断面锚索＋金属网、钢带、梯子粱”联合支护，经过现场实践，掘进巷道在新方案支护183天后，两帮、顶底板收敛变形明显减小，变形处于相对稳定状态，达到了支护效果。

英文摘要：

Aiming at the problems of deformation and failure such as large floor heave , rib spall and roof fall exist-ing in half coal rock roadway under extremely fractured surrounding rock with strong dilatability and difficult sup -port , the deformation mechanism and control strategy of roadway were researched by the combination of mechanical theory analysis , numerical simulation and field test .The results showed that under the original passive support form of arch beam , the deformation and failure of roadway were influenced by multiple effects of water absorption expan-sion, weak interlayer, joints and so on, and the deformation and failure of roadway were serious .The combined support scheme of ＆quot;full section cable＋metal net, steel strip and ladder beam＆quot;was put forward .Through the field test by the new scheme , the convergence and deformation in two sides , roof and floor of excavation roadway reduced significantly 183 days later , the deformation was in a relatively stable state , and the support effect was achieved .