采矿与安全工程学报2012，Vol.29Issue(4)：474-480,7.
软弱破碎围岩高强高预紧力支护技术与应用
Application of Support Technology with High Strength and High Pretension Stress for Weak-Broken Rocks
摘要
Abstract
Due to high stress and low rock strength environment, the support of weak-broken rocks under the condition of deep mining should be solved through strengthening broken rock, reinforcing support resistance and decreasing the mine-induced stress. For the purpose of permanent support for the weak-broken rocks, this study has pointed out the support technology with high strength and high pre-tension stress which is based on the bolt-wire-shotcrete system combined with steel arched yielding support. This kind of support technology have combined the each support element and adequately taken advantage of load-caring capacity of surrounding rocks. Based on the monitoring data of Xiaokang coal mine and Muchengjian coal mine, the characters of weak-broken rocks and the features of the support technology with high strength and high pretension stress were analyzed. The results of field tests indi-cate that the support technology with high strength and high pretension stress has provided powerful support force to resist large deformation of weak-broken surrounding rocks for the various geological conditions. It is proved that the mine-induced stress can also be released by the support technology and the support technology with high strength and high pretension stress has economical significance.关键词
软弱破碎围岩/高强高预紧力/支护阻力/采动应力/U型钢可缩支架Key words
weak-broken rock/ high strength and high pretension stress/ support resistance/ mine-induced stress/ steel arched yielding support分类
矿业与冶金引用本文复制引用
王宏伟,姜耀东,赵毅鑫,祝捷,单如月..软弱破碎围岩高强高预紧力支护技术与应用[J].采矿与安全工程学报,2012,29(4):474-480,7.基金项目
国家重点基础研究发展计划(973)项目(2010CB226801) （973）
国家自然科学基金项目(51174213) （51174213）
煤炭资源与安全开采国家重点实验室开放基金项目(SKLCRSM10KFB09) （SKLCRSM10KFB09）
中央高校基本科研业务费专项资金项目(2010YL10,2010QL02) （2010YL10,2010QL02）
北京市支持中央在京高校共建项目 （）
