Research and Practice of Rock Mechanics for Mining of Large and Thick Pillars with Inclusion of Fillings

Abstract:

Through investigation and test analysis of current situation of testing stope and surrounding filling and isolation layer of mines, understand the basic mechanical characteristics and integrity characteristic of surrounding rock mass and fillings of chamber to be mined; combining with comparative analysis of technical and economic index of mining, considering making full use of the existing personnel, equipment and technology, it is concluded that stoping technology scheme of chamber is large-diameter deep-hole afterwards filling mining method; by using the numerical analysis method, through comprehensive analysis of stress, deformation and failure characteristics of surrounding fillings in mining, finally determine the optimal recovery scheme is mining by recovery unit of upper and lower plate. At present the ore block has been successfully and safely mined. Research results can provide reference for recovery of similar ore block, in order to realize safe and efficient recovery of "island" ore block in mining with filling mining method.

• Periodical: Advanced Materials Research (Volumes 734-737)
• Pages: 796-801
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.734-737.796
• Online since: August 2013
• Authors: Hui Cao*, Lian Ku Xie, Xiao Cong Yang, Zan Cheng Chen
• Keywords: Filling, Mining Methods, Numerical Analysis, Safe and Efficient

References

[1] HE Man-chao, XIE He-ping, PENG Su-ping, JIANG Yao-dong. Study on rock mechanics in deep mining engineering [J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(16): 2803-2813.(in Chinese)

[2] LIU Neng-guo, ZHANG Chang-qing. Description and evaluation of mine filling technology [J]. World Mining Express Information, 1997, 13(16): 8-12.(in Chinese)

[3] LI Yi-fan, ZHANG Jian-ming, DENG Fei, BAI Shi-wei. Experimental study on strength characteristics of tailings cement backfilling at deep-seated mined-out area [J]. Rock and Soil Mechanics, 2005, 26(6): 865-868.(in Chinese)

[4] XIE Wen-bing, SHI Zhen-fan, CHEN Xiao-xiang, ZHENG Bai-sheng. Analysis of surrounding rock activities in partial backfill mining [J]. Journal of China University of Mining & Technology, 2004, 33(2): 162-165.(in Chinese)