Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《The Chinese Journal of Geological Hazard and Control》 2014-01
Add to Favorite Get Latest Update

Design on the size of waterproof pillar(rock) in subsea bedrock mining

WU Hao;ZHAO Guo-yan;MA Shao-wei;CAO Wen-zhuo;JIANG Hai-tao;School of Resources and Safety Engineering,Central South University;  
Xinli district of Sanshandao Gold Mine is the first metal mine undersea in China. To ensure safety of mining undersea and reduce the loss of mineral resources,it's crucial to design the size of waterproof pillar( rock) scientifically and reasonably in engineering practice. According to the mining conditions,firstly,the paper introduces the equivalent thickness coefficient n to amend the empirical formula of stope's water flowing fractured zone,by which,the minimum height of the waterproof pillar calculated is( 48. 1 ± 5. 6) m. Secondly,the paper analyzes and calculates the size of waterproof pillar in two mechanical models of waterproof pillar from the aspects of both strength and stiffness. The regression curve that between the height of waterproof pillar and safety factor is fitted in condition of strength. Then,the critical height of waterproof pillar is 37. 24m and 40. 40m respectively,calculated by integral degeneration in condition of strength. Finally,the water flowing fractured zone of-200m stope measured by Flac3Dnumerical simulation is 34. 75m. Based on the above findings,the height of waterproof pillar( rock) of Xinli district is 54m.
【Fund】: 中南大学中央高校基本科研业务费专项资金资助(2013zzts260);; 国家重点基础研究发展规划(“973”计划)项目(2010CB732004)
【CateGory Index】: TD857
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【Co-citations】
China Proceedings of conference Full-text Database 6 Hits
1 Guo Xin-hua (Scientific Academy of Land and Resources of Henan Province,Zhengzhou 450053,Henan,China );Analysis of Common Geological Hazards in Mine[A];[C];2010
2 Wang Shuangming~(1,2) Fan Limin~3 Huang Qingxiang~1 Yang Zeyuan~4 Wang Guozhu~5 Shen Tao~3 (1.Shaanxi Provincial Coal Industry Bureau;2.Xi'an University of Science and Technology;3.Technical Center of Shaanxi Provincial Coal geological survey;4.Chang'an University;5.Shaanxi Provincial Coal Geology Bureau);Study On Coal Mining for protecting Ecological Water Level in the Ecological Fragile Mining Area[A];[C];2009
3 Wang Bin (Special Drilling Department of the 1st China Coal Construciton Company Hebei Handan 056003);Analysis of Program of Deviation Prevention and Control in Freezing Hole Construction[A];[C];2009
4 CHEN Yu-min,XIU Guo-lin (Shandong Gold Group Co.,Ltd,Jinan 250100,China);Research on technology of efficient mining and security in large-undersea metal deposit[A];[C];2012
5 WANG Shan-shan~1,JI Min~2,HU Rui-lin~1 (1.Key Laboratory of Engineering Geomechanics,Institute of Geology and Geophysics,CAS,Beijing 100029; 2.Geomatics College,Shandong University oj Science and Technology,Qingdao 266510,China);Spatial Temporal Expression of Mining Subsidence Based on Version-Increment[A];[C];2013
6 ZHANG Zhi-qiang,HE Ben-guo,LI Yong-long,ZHANG Guang-jin (School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China);Study on orthogonal test of influencing factors of tunnel in joined rock mass and mechanical effect of bolt support[A];[C];2012
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved