摘要
分析矿山开采中深部岩巷围岩稳定的影响因素,据此提出深部岩巷稳定性控制的基本方法。结合淮南张集矿深部巷道围岩的稳定性控制问题,采用多方案的数值计算选取其支护方案,针对该支护方案开展现场支护试验研究和现场监测,进而基于对监测资料的反馈分析,通过及时调整支护设计,完成淮南张集矿深部巷道稳定性控制的实例研究。研究表明,运用具有高初锚力的超高强锚杆支护,同时根据现场监测结果适时进行锚索加固和注浆补强加固围岩,可有效提高深部巷道围岩的稳定性;所提出的深部岩巷稳定性控制方法,对其他类似深部岩巷的支护设计具有良好参考价值。
The multiple factors influencing the stability of deep rock tunnel are analyzed, and the stability control methods for deep rock tunnel are provided. Moreover, the suggested methods are applied to a deep rock tunnel in Zhangji Coal Mine in Huainan, China. Firstly, a support scheme for the deep tunnel is chosen according to the results of numerical analysis. Then, the support scheme is constructed and the in-situ monitoring is implemented. Furthermore, based on the feedback analysis, the support scheme is optimised and adjusted so as to improve the stability of the surrounding rock of the deep tunnel. The results demonstrate that the stability can be improved greatly when the ultra-high strength bolts with high initial prestress, anchorage cable and concrete injection are used in supporting. The presented methods for stability control of deep rock tunnel can be used to other deep rock tunnels with the similar conditions.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2008年第A02期3913-3918,共6页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(40672192
50479072)
国家自然科学基金重点项目(50539090)
湖北省自然科学基金资助项目(2007ABB040)
关键词
采矿工程
深部岩巷
稳定性
数值计算
现场监测
mining engineering
deep rock tunnel
stability
numerical calculation
in-situ monitoring
