利用数值计算方法，研究了顶板强度对回采巷道围岩应力分布、塑性区范围及底鼓的影响，结果表明：巷道顶板强度提高后，巷旁支承压力峰值将向巷帮深部移动，顶板中的水平应力增加，巷道底板的塑性区范围明显减小，巷道底鼓量也将减小。在此基础上，提出了加固巷道顶板控制底鼓的观点。

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.

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.

This paper introduced a real time monitor technique for supports in fully mechanized coal faces and surrounding rock of entries based on CAN BUS. It includes support working features monitor and roof separation real time monitor of entries. The system can realize real data display and alarm in the locality, and communicate data by CAN BUS. It guarantees realization of high production and high efficiency safety mining for modern mine.