超前管棚注浆支护技术在极复杂断层带中的应用  

Supporting technique with advanced pipe-shed grouting in extremely complicated faulting zone

作　　者：赵毅鑫[1,2] 姜耀东[1,2] 孟磊[2] 王涛[3] 刘华博[2] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,北京100083 [2]中国矿业大学力学与建筑工程学院,北京100083 [3]中国矿业大学资源与安全工程学院,北京100083

出　　处：《采矿与安全工程学报》2013年第2期262-266,共5页Journal of Mining & Safety Engineering

基　　金：国家重点基础研究发展计划(973)项目(2010CB226804);国家自然科学基金项目(51174213);教育部新世纪优秀人才计划项目(NCET-10-0775);中央高校基本科研业务专项资金项目(2009QM01);深部岩土力学与地下工程国家重点实验室开放课题项目(SKLGUEK1021)

摘　　要：基于煤矿巷道采用超前管棚注浆支护技术顺利通过复杂断层带的实际案例,研究了巷道通过极复杂断层带面临的破碎围岩变形控制问题。通过计算确定了超前管棚注浆支护的设计参数,采用数值计算手段分析了过断层区域不同支护条件下的围岩应力和巷道变形情况,并针对施工后的管棚支护巷道变形量进行了现场实测,总结了超前管棚注浆支护技术在巷道通过复杂断层带的成功经验。实践证明:超前管棚注浆支护技术提高了围岩的完整性及整体承载能力,能够形成较强的预支护体系,可应用于复杂断层带的破碎围岩变形控制,但需辅以物探手段提高注浆质量、加强监测才能保障巷道顺利通过复杂断层带,本文经验可对类似工程的设计和施工提供借鉴。Based on the application cases of roadways successfully passing through the complicated fault zones by using supporting technique with advanced pipe-shed grouting,the technical problems of roadway support in passing through the extremely complicated fault zone were analyzed firstly in this paper.Meanwhile,the design parameters of advanced pipe-shed grouting were calculated,and the stress and deformation of surrounding rock in the fault zone under various supporting conditions were also analyzed by numerical simulation.Moreover,the in-situ deformation of roadway supported by advanced pipe-shed grouting was measured,and the successful application experiences of the pipe-shed grouting technique were summarized.The practice results show that the supporting technique with pipe-shed grouting can not only improve the integrity of surrounding rock and the supporting capacity,but also form a strong pre-support system.It can be well used as one of effective roadway support techniques in the complicated geological zones.However,some other measures,such as geophysical prospecting,effective in-situ monitoring,et al,are needed to improve the grouting quality and ensure the safety of passing through the complicated fault zones.The experiences in this paer can provide reference to the design and construction of similar projects in complicated geological zones.

关 键 词：管棚注浆 支护 巷道 断层带 

分 类 号：TD265[矿业工程—矿井建设]