锚杆工作荷载与巷道围岩变形相关性实验研究  

Experimental Research on the Correlation Between Bolt Working Load and Surrounding Rock Deformation

作　　者：赵文成[1] 李义[1] 高国付[2] 

机构地区：[1]太原理工大学矿业工程学院,山西太原030024 [2]黑龙江科技大学力学部,黑龙江哈尔滨150080

出　　处：《矿业研究与开发》2014年第1期58-61,67,共5页Mining Research and Development

摘　　要：在现有锚杆支护巷道围岩稳定性研究的基础上,提出了通过锚杆工作荷载评估巷道围岩稳定性的设想。采用物理相似模拟的方法对其进行了实验研究。根据巷道围岩控制理论和实验研究结果,分析了承载条件下巷道周边围岩变形特征;揭示了在巷道加载破坏过程中,锚杆工作荷载随巷道围岩变形位移的演化规律;重点研究了在巷道变形、失稳、破坏各阶段中锚杆工作荷载与围岩表面位移的相关性,并建立了其对应关系。利用这一对应关系,通过锚杆工作荷载的无损检测实现对巷道围岩稳定性的判断和评估,为现场实时分析和评价巷道围岩稳定性及其支护结构的合理性提供了必要的理论与技术支持。On the basis of the former research achievements, a design of evaluating the stability of surrounding rock by bolt working load was proposed, and was verified by experi mental research with physical similar simulation. According to the surrounding rock control theory and the experimental results, the characteristics of surrounding rock deformation around roadway under bearing load were analyzed. And the evolulion law of bolt working load with the displacement of surrounding rock was revealed. Furthermore, correlation be- tween the working load with the displacement of surrounding rock in the process of deformation, instability and destruc- tion was detailed szudied and a corresponding relationshipwas accordingly established. Thus, stability evaluation of the surrounding rock would be realized according to nondestruc tive examination on bolt working load. This study provided necessary theoretical and technical support for on site analy sis and real-time evaluation on the stability of surrounding rock and rationality of support structure.

关 键 词：锚杆 工作荷载 相似模拟 巷道支护 围岩稳定性 

分 类 号：TD353.6[矿业工程—矿井建设]