中南大学学报（自然科学版）Issue(6)：2250-2260,11.DOI:10.11817/j.issn.1672-7207.2015.06.037
深部巷道U型约束混凝土拱架力学性能及支护体系现场试验研究
Field test study on mechanical properties of U-type confined concrete arch centering and support system in deep roadway
摘要
Abstract
In order to solve the problem in deep rock roadway and roadway with structural fracture zone, a new support form, i.e. U-type confined concrete (UCC) arch centering, was developed.The bearing and deformation characteristics of the arch centering were researched experimentally, and the key position of the arch centering failure was confirmed. Finally, the action principle of the support system was analyzed. The results show that UCC short columns have better ductility and post-bearing capacity, and the ultimate beating capacity is increased by 127%—196% compared with that ofU-steel short columns, which shows that the ultimate beating capacity of UCC short columns is 2.16 times that of U-steel arch. UCC arch centering is a three-dimensional support system, the surrounding rock control effect is significant, and the maximum deformation of roadway surrounding rock is 53 mm under UCC arch centering, only 20.6% of that of U type steel arch frame. UCC arch centering can provide high support, guaranteeing the safety of supporting system effectively.关键词
深部巷道/U型约束混凝土/拱架/力学性能Key words
deep rock roadway/U-type confined concrete/arch centering/mechanical properties分类
矿业与冶金引用本文复制引用
王琦,李为腾,李术才,江贝,阮国强,王德超,张世国,刘文江,邵行..深部巷道U型约束混凝土拱架力学性能及支护体系现场试验研究[J].中南大学学报（自然科学版）,2015,(6):2250-2260,11.基金项目
国家自然科学基金资助项目(51304125，51379114)；山东省优秀中青年科学家科研奖励基金资助项目(BS2013NJ004)；中国博士后科学基金面上资助一等资助项目(2013M540548)；山东省博士后创新项目专项资助项目(201301004)；煤矿安全高效开采省部共建教育部重点实验室开放基金资助项目(JYBSYS2014103)(Projects (51304125,51379114) supported by the National Natural Science Foundation of China （51304125，51379114）
Project (BS2013NJ004) supported by the Scientific Research Foundation of Outstanding Young and Middle-aged Scientist Award of Shandong Province （BS2013NJ004）
Project (2013M540548) supported by Chinese Postdoctoral Science Foundation；Project (201301004) supported by Shandong Postdoctoral Innovation Fundation （2013M540548）
Project (JYBSYS2014103) supported by Key Laboratory of Safety and High Efficiency Coal Mining of Ministry of Education) （JYBSYS2014103）
