Model test study on deformation mechanisms of roadways supported by constant resistance and large deformation anchor cables#br#
WANG Jiong1，2，ZHANG Zhengjun1，2，ZHU Tianci2，HE Manchao1，GONG Weili1，2，ZHANG Xinyu2#br#
(1. State Key Laboratory for Geomechanics and Deep Underground Engineering，China University of Mining and Technology，Beijing 100083，China；2. School of Mechanics and Civil Engineering，China University of Mining and Technology，Beijing 100083，China)
Abstract：In order to solve the problem of large deformation of deep soft rock roadways，a kilometer deep roadway in Kouzidong coal mine was taken as the engineering example and the deformation mechanism of surrounding rock of the roadway supported by constant resistance and large deformation(CRLD) anchor cables was studied by means of theoretical analysis and physical model test. Firstly，the semi-circular arch roadway with straight walls was simplified into a circular roadway，and the distribution characteristics of surrounding rock stress and the analytical solution of roadway displacement under constant support force but different stress conditions were obtained based on the theory of elastic mechanics. Secondly，the roadway support experiment with constant resistance anchor cables was designed and carried out based on the similarity theory. The results show that the displacement of the roadway increases with increasing the surrounding rock stress and that，with rising the horizontal tectonic stress，the deformation on both sides of the roadway is gradually larger than that on the roof and the floor，indicating that the tectonic stress has a significant impact on the stability. It is also revealed that the CRLD cable can transfer stresses to the elastic zone，so that the rock mass of the anchorage zone plays a supporting role. The theoretical calculation values of roadway surrounding rock displacement are compared with the monitoring data in the model experiment，and a good agreement is obtained. Comparisons of the roadway deformation between the field monitoring and experimental results also give a good consistence with less than 5% of the surface displacement error of the roadway，which indicates that the model test has certain reference value.
王 炯1，2，张正俊1，2，朱天赐2，何满潮1，宫伟力1，2，张鑫宇2. 恒阻大变形锚索支护巷道变形机制模型试验研究[J]. 岩石力学与工程学报, 2020, 39(5): 927-937.
WANG Jiong1，2，ZHANG Zhengjun1，2，ZHU Tianci2，HE Manchao1，GONG Weili1，2，ZHANG Xinyu2. Model test study on deformation mechanisms of roadways supported by constant resistance and large deformation anchor cables#br#. , 2020, 39(5): 927-937.
王连国，李明远，王学知，等. 深部高应力极软岩巷道锚注支护技术研究[J]. 岩石力学与工程学报，2005，24(16)：2 889-2 893. (WANG Lianguo，LI Mingyuan，WANG Xuezhi，et al. Research on bolt-grouting support technology for deep high stress very soft rock roadway[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2 889-2 893.(in Chinese))
[4]
孙晓明，何满潮，杨晓杰，等. 深部软岩巷道锚网索耦合支护非线性设计方法研究[J]. 岩土力学，2006，27(7)：1 061-1 065.(SUN Xiaoming，HE Manchao，YANG Xiaojie，et al. Research on nonlinear design method of bolt-mesh-cable coupled support in deep soft rock roadway[J]. Rock and Soil Mechanics，2006，27(7)：1 061-1 065.(in Chinese))
[6]
王卫军，彭 刚，黄 俊，等. 高应力极软破碎岩层巷道高强度耦合支护技术研究[J]. 煤炭学报，2011，36(2)：223-228.(WANG Weijun，PENG Gang，HUANG Jun，et al. Research on high strength coupled support technology for roadway in high stress and extremely soft fractured rock stratum[J]. Journal of China Coal Society，2011，36(2)：223-228.(in Chinese))
[8]
何满潮，王 炯，孙晓明，等. 负泊松比效应锚索的力学特性及其在冲击地压防治中的应用研究[J]. 煤炭学报，2014，39(2)：214-221.(HE Manchao，WANG Jiong，SUN Xiaoming，et al. Mechanics characteristics and applications of prevention and control rock bursts of the negative poisson¢s ratio effect anchor[J]. Journal of China Coal Society，2014，39(2)：214-221.(in Chinese))
[14]
朱维申，张玉军，任伟中，等. 系统锚杆对三峡船闸高边坡岩体加固作用的块体相似模型试验研究[J]. 岩土力学，1996，17(2)：1-6.(ZHU Weishen，ZHANG Yujun，REN Weizhong，et al. Similar model block tests for reinforcing effects of systematic bolts on rock mass of high slope of Three Gorges flight lock[J]. Rock and Soil Mechanics，1996，17(2)：1-6.(in Chinese))
[1]
何满潮，谢和平，彭苏萍，等. 深部开采岩体力学研究[J]. 岩石力学与工程学报，2005，24(16)：2 803-2 811.(HE Manchao，XIE Heping，PENG Suping，et al. Study on rock mechanics in deep mining engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2 803-2 811.(in Chinese))
[11]
何满潮，袁和生，靖洪文，等. 中国煤矿锚杆支护理论与实践[M].北京：科学出版社，2004：115-116.(HE Manchao，YUAN Hesheng. Chinese coal bolting theory and practice[M]. Beijing：Science Press，2004：115-116.(in Chinese))
[9]
张国锋，王二雨，许丽莹，等. 煤矿高恒阻大变形锚索受力特性、规律及应用研究[J]. 岩石力学与工程学报，2016，35(10)：2 033- 2 043.(ZHANG Guofeng，WANG Eryu，XU Liying，et al. Mechanical characteristics of high constant resistance and large deformation anchor rope in coal mines[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(10)：2 033-2 043.(in Chinese))
[7]
HE M C，GONG W L，WANG J，et al. Development of a novel energy-absorbing bolt with extraordinarily large elongation and constant resistance[J]. International Journal of Rock Mechanics and Mining Sciences，2014，67(1)：29-42.
[2]
钱七虎. 深部地下工空间开发中的关键科学问题[C]// 第230 次香山科学会议——深部地下空间开发中的基础研究关键技术问题. [S. l.]：[s. n]，2004：6-28.(QIAN Qihu. The key problems of deep underground space development[C]// The Key Technical Problems of Base Research in Deep Underground Space Development—the 230th Xiangshan Science Conference. [S. l.]：[s. n.]，2004：6-28.(in Chinese))
[5]
康红普，王金华，林 健，等. 高预应力强力支护系统及其在深部巷道中的应用[J]. 煤炭学报，2007，32(12)：1 233-1 238.(KANG Hongpu，WANG Jinhua，LI Jian，et al. High prestressed strong support system and its application in deep roadway [J]. Journal of China Coal Society，2007，32(12)：1 233-1 238.(in Chinese))
[10]
何满潮，郭志飚. 恒阻大变形锚杆力学特性及其工程应用[J].岩石力学与工程学报，2014，33(7)：1 297-1 308.(HE Manchao，GUO Zhibiao. Mechanical property and engineering application of anchor bolt with constant resistance and large deformation[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(7)：1 297-1 308.(in Chinese))
[12]
Meng Q， ZHAO H， ZHU C，et al. Analytical and reliability study of the tunnel with rockbolts in rock masses[J]. Periodica Polytechnica Civil Engineering，2018，62(3)：783-791.
李为腾，李术才，王 琦，等. 深部厚顶煤巷道围岩变形破坏机制模型试验研究[J]. 岩土力学，2013，34(10)：2 847-2 856.(LI Weiteng，LI Shucai，WANG Qi，et al. Model test study of surrounding rock deformation and failure mechanism of deep roadway with thick top coal[J]. Rock and Soil Mechanics，2013，34(10)：2 847-2 856.(in Chinese))
2020, Vol. 39 
