Deformation mechanism of roadways in deep soft rock at Hegang Xing’an Coal Mine
Deformation mechanism of roadways in deep soft rock at Hegang Xing’an Coal Mine
复制标题
DOI：
10.1016/j.ijmst.2013.04.002
复制
发表时间：
2013-03
影响因子：
11.8
通讯作者：
Xiaojie Yang;Jiewen Pang;D. Liu;Yang Liu;Yihong Tian;Jiao Ma;Shao-hui Li
中科院分区：
文献类型：
--
作者：
Xiaojie Yang;Jiewen Pang;D. Liu;Yang Liu;Yihong Tian;Jiao Ma;Shao-hui Li
研究了鹤岗兴安煤矿深部软岩巷道的工程地质力学特征，分析了巷道围岩中粘土矿物的性质。本文旨在解决煤矿高应力、支护困难的技术难题，为支护设计提供依据。结果表明，兴安煤矿深部软岩巷道的力学变形机制为IABIIABCIIIABCD型，包括分子吸水型（IAB型）、构造应力型+重力变形型+水力型（IIABC型）和含断层、软弱夹层和顺层的IIIABCD型。根据复合力学变形机理，提出了相应的力学控制措施和转换技术，并在兴安煤矿深部软岩巷道支护实践中得到成功应用，效果良好。兴安煤矿是我国埋藏最深的煤矿，覆盖层从中生代侏罗纪成煤期一直延续至今。研究结果对软岩巷道支护设计具有指导意义。
Engineering geomechanics characteristics of roadways in deep soft rock at Hegang Xing’an Coal Mine were studied and the nature of clay minerals of roadway surrounding rock was analyzed. This paper is to solve the technical problems of high stress and the difficulty in supporting the coal mine, and provide a rule for the support design. Results show that mechanical deformation mechanisms of deep soft rock roadway at Xing’an Coal Mine is of IABIIABCIIIABCDtype, consisting of molecular water absorption (the IAB-type), the tectonic stress type+gravity deformation type+hydraulic type (the IIABC-type), and the IIIABCD-type with fault, weak intercalation and bedding formation. According to the compound mechanical deformation mechanisms, the corresponding mechanical control measures and conversion technologies were proposed, and these technologies have been successfully applied in roadway supporting practice in deep soft rock at Xing’an Coal Mine with good effect. Xing’an Coal Mine has the deepest burial depth in China, with its overburden ranging from Mesozoic Jurassic coal-forming to now. The results of the research can be used as guidance in the design of roadway support in soft rock.