Study on the Stability Control of Deep Soft Rock Caverns in the High Geostress
The paper is to analyze convergent deformation and its main characteristics of surrounding rock of pump chamber of deep soft rock caverns under high geostress in Zhaogezhuang colliery; numerical simulation analysis on stress distribution and displacement laws under high geo-stress excavation and different supporting conditions were made. On the basis of mechanics test of grouting consolidation structure body, residual strength of broken rock and plastic deformation is increased to some extent after grouting-consolidation, and so the grouting broken rock can keep load capacity steady within a relatively large deformation range. Then further reveals the mechanism of grouting reinforcement of surrounding rock and deformation coordination of consolidation body. Based on the principle and construction technique of bolt-grouting reinforcement, and geological conditions in Zhaogezhuang colliery, the problems of stability and maintenance of deep caverns are also solved by adopting bolt-grouting supporting reinforce technique. Finally, bolt-grouting supporting reinforce technique under deep soft rock is practicable technically and economically.
high geo-stress deep caverns numerical simulation composite supporting
Fu Zhiliang Wang Hanpeng
College of Energy & Safety, Anhui University of Science & technology, Huainan 232001, China Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, China
国际会议
The 3rd International Symposium on Modern Mining & Safety Technology Proceedings(第三届现代采矿与安全技术国际学术会议)
辽宁阜新
英文
487-493
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）