采矿与安全工程学报2011，Vol.28Issue(2)：187-192,6.
沿空巷道三维锚索支护围岩变形规律研究
Deformation Law of Surrounding Rock of Gob-Side Entry Supported by 3-D Anchor-Cable Support
摘要
Abstract
The 3-D anchor-cable support technology is put forward, and a similar material model is made to study the deformation law of surrounding rock of gob-side entry supported by 3-D anchor-cable supports based on the similarity theory and the geological conditions of return airway of No. 5218 working face in Wangzhuang coal mine. The research on deformation law of surrounding rock of gob-side entry supported by 3-D anchor-cable support is based on analyzing surface displacement and stress distribution of surrounding rocks. The results show that the 3D anchor-cable support can form a pressure arch in the roof of gob-side entry and improve the carrying capacity. The experiment indicates that as the load reaches 1.4 MPa, the roof to floor convergence and two roadsides convergence of roadway supported by the 3-D anchor-cable are 76. 7％ and 66. 7％, respectively, compared with the condition supported by common boltmesh-anchor support. The simulation illustrates that the maximum convergence of roof to floor and the two roadsides of roadway supported by the 3-D anchor-cable are 55.20％ and 52.05％, respectively, compared with the condition supported by common bolt-mesh-anchor support, The research achievement has been successfully applied in practice of return airway support of No. 5218 working face in Wangzhuang coal mine; and during the extracting stage, the maximum convergence of rool to floor and the two roadsides of roadway supported by the 3-D anchor-cathle are 58. 14％ and 49.34 ％. respectively, compared with the condition supported by common bolt mesh-anchor support,关键词
动压/沿空巷道/三维支护/变形规律/相似试验Key words
dynamic pressure/ gob-side entry/ three-dimensional support/ deformation law/ similarity test分类
矿业与冶金引用本文复制引用
肖亚宁,马占国,赵国贞,潘银光,马继刚..沿空巷道三维锚索支护围岩变形规律研究[J].采矿与安全工程学报,2011,28(2):187-192,6.基金项目
教育部"新世纪优秀人才支持计划"项目(NCET-08-0837) （NCET-08-0837）
国家重点基础研究发展计划(973)项目(2007CB209400) （973）
国家自然科学基金重点项目(50834005) （50834005）
国家自然科学基金项目(51074163) （51074163）
江苏省自然科学基金项目(BK2009092) （BK2009092）
江苏省"青蓝工程"项目 （）
深部岩土力学与地下工程国家重点实验室 （）
