Control technology and coordination deformation mechanism of rise entry group with high ground stress

作     者：Li Qingfeng Zhu Quanqu Li Qingfeng;Zhu Quanqu

作者机构：Hunan Key Laboratory of Safe Mining Techniques of Coal Mines Hunan University of Sdence and Technology Xiangtan 411201 China School of Energy and Safety Engineering Hunan University of Science and Technology Xiangtan 411201 China 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2012年第22卷第3期

页      面：429-435页

核心收录：

学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 0835[工学-软件工程] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：provided by the National Natural Science Foundation of China (No. 50674046) the Open Foundation of Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines of China (No. 200803) 

主　　题：Several rise entryCoordination deformationNumerical simulationConstruction sequence 

摘      要：Based on engineering practices of Wuyang Coal Mine, we carried out X-ray diffract researches on No. 3 coal; and the rocks of its roof and floor by XRD meter, and simulated the interactive effect of the surrounding rock deformation by FLAC2DS.0 numerical simulation software under the condition of different tunneling method of multimine roadway in parallel. The internal structures of the surrounding rocks of 76 belt roadway were monitored by borehole observation instruments： and then, we analyzed the reason of fhilure and deformation of surrounding rocks of several rise entry, and proposed the technical mea- sures for controlling interactive effect of several rise entry surrounding rock deformation at last. For the thickness seam rise roadway, two conclusions were drawn： one is that the co-deformation among roadway groups mainly reflect on that both shear failure and deformation in coal pillar among roadways have decreased the width of pillar core region and clamping action of coal pillar to roof strata, increased the actual span of roof strata, intensified the flexural failure of roof strata and prized the bed separation of roof deep rock strata. The other conclusion is that the factors controlling the interactive deformation among roadways is obvious when appropriate re-adjustment in construction sequence of the tunneling of multimine parallel roadways because the construction sequence among roadways also has great effects on deformation of the surrounding rock in roadway.