用理论分析和数值计算方法研究了综采放顶煤面沿空巷道的围岩稳定性，分析了影响掘巷位置的几个因素——老顶岩层垮落特征、直接顶和煤体变形特点及采空侧支承压力分布规律，提出了沿空巷道的合理位置。研究成果应用于兴隆庄煤矿5318综采放顶煤面沿空巷道锚杆支护，并取得了成功。

针对泉沟煤矿要采出- 115大巷下压煤, 同时要保证上部的大巷正常使用的技术难点,进行了下伏煤层开采大巷围岩活动规律的模拟分析. 研究了下伏两煤层开采引起的岩层运动规律及其对- 115大巷造成的影响. 此外, 采用RFPA数值模拟系统, 就大巷支护方式、下伏煤层与大巷距离、下伏煤层开采顺序等因素对- 115大巷围岩稳定性造成的采动影响的普遍规律进行了系统分析, 并提出相应措施. 研究结果表明: - 115大巷的原支护不能保持其稳定性, 通过采用必要的加强支护措施后, 大巷的稳定性是有保证的.

针对某矿- 115 大巷下部煤层跨采条件下围岩稳定性维护的技术难点,分析了该大巷的动态控制原理,通过实验室相似材料模拟,研究了下部煤层开采引起的岩层运动规律及其对- 115大巷造成的影响. - 115 大巷的原支护不能保持其稳定性,但通过采用必要的加强支护措施后,大巷的稳定性得到了保证. 在此基础上,提出相应的大巷加固原则和关键技术,并利用FLAC 软件优化确定了合理的大巷加固参数,且对大巷加固后的围岩状况进行了预测. 井下工业性试验达到了预期效果,提高了煤炭采出率,保证了矿井产量,社会经济效益显著.

针对综放沿空掘巷围岩的特点, 提出了综放沿空掘巷围岩大、小结构的稳定性原理, 为锚杆支护的成功应用提供了理论依据. 对老顶中的弧三角形关键块的受力特点、在掘巷期间和回采影响期间的稳定情况以及对其下的沿空掘巷的影响进行了分析. 探讨了影响围岩小结构稳定性的主要因素; 应用巷道锚杆支护围岩强度强化理论, 研究了提高锚杆预紧力和支护强度对保持围岩小结构稳定性的重要意义.

The range of plastic zone and fractured zone in high stress roadways was wide; surrounding rock was destroyed badly and the support cost was very high thus made mining extremely difficult. It’s the key problem and research emphasis in surrounding rock controlling. Surrounding rock stress was transferred from shallow to deep, which is the basic technical approach to controlling the deformation of surrounding rock, and keeping roadway in well maintenance condition. Aimed at mechanics mechanism of high stress roadways, the law of stress transfer in mining influence space is studied by use of Green function and formula, and put forward stress transfer theory. According to different surrounding rock conditions and controlling desire, five new technologies on remedying high stress roadways are put forward through theoretic study, mechanics calculation and engineering practice, which contains driving roadway in roof, loose blasting and driving roadway in floor, upward mining, loose blasting and grouting reinforcement in floor, driving advanced bore hole or destressing notch in roadway head. Research and application indicates, stress transfer theory and technology offers a new theoretical platform and effective technical approaches, and can be used in remedying high stress roadway in mine or support in other underground project.