School of Mechanics and Architecture Engineering, China University of Mining and Technology (Bejing) Xishan
Coal and Electric Power Group Corporation Ltd.

为解决杨庄矿Ⅲ1采区绞车硐室两帮移近量大、顶板喷层脱落及严重底鼓等围岩破坏问题,在对围岩矿物成分进行试验分析基础上,采用现场测试和理论分析等方法对绞车硐室围岩破坏机理进行了研究。研究结果表明:巷道支护结构与支护参数的不合理和围岩含大量黏土矿物成分,是造成开挖已久的绞车硐室围岩破坏的2大主要原因。根据围岩破坏机理,通过理论计算和类比分析,提出了锚网喷结合注浆的二次加固方案,现场应用表明,采用该方案后,顶底板移近量和两帮移近量最大值分别为40、55 mm,绞车硐室趋于稳定。

In order to solve the surrounding rock failure problems of winch chamber in No. I 1 mining area of Yangzhuang Mine, such as, two sides getting closer, severe skin falling off the roof of pulp and serious floor heave, through the surrounding rock mineral composition analysis experiment, field test and theoretical analysis, the paper studied the failure mechanism of the surrounding rock, and then the scientific and reasonable secondary reinforcement scheme were put forward. The study「 esluts showed that unreasonable supporting structure and parameters and a lot of clay mineral components were two main causes for the failure. Through the theoretic al calculation and analogy analysis, the paper put forward the secondary anchor reinforcement scheme by using rock bolt 1 mesh 1 shotcrete combined with grouting. Th e field application showed that the maximum convergences of roof- to- floor and rib- to- rib respectively were 40 mm and 55 mm after adopting the study plan, and the w inch chamber deformation would be gradually stable.

教育部新世纪优秀人才支持资助项目(NECT-12-0965)；国家自然科学基金面上资助项目(51274204)；