Study on stress coordination of composite support body in stope filled alternately with waste rock and tailings

doi:10.16265/j.cnki.issn1003-3033.2019.04.016

China Safety Science Journal ›› 2019, Vol. 29 ›› Issue (4): 96-103.doi: 10.16265/j.cnki.issn1003-3033.2019.04.016

• Safety Science of Engineering and Technology • Previous Articles Next Articles

Study on stress coordination of composite support body in stope filled alternately with waste rock and tailings

WANG Qihu^1,2, ZHANG Guangquan^1,2, YE Yicheng^1,2, JIANG Wei³

1 Hubei Provincial Engineering Technology Research Center of High efficient Clean Utilization Shale Vanadium Resource, Wuhan Hubei 430081, China;
2 School of Resource and Environmental Engineering,Wuhan University of Science and Technology, Wuhan Hubei 430081, China;
3 Daye Iron Mine Corporation Limited of WISCO Resource Group, Huangshi Hubei 435006, China

Received:2018-12-20 Revised:2019-02-27 Online:2019-04-28 Published:2020-11-04

Abstract

Abstract: In order to solve the inhomogeneous loading of the composite support body in stope filled alternately with waste rock and tailings, the typical stope filled alternately with waste rock and tailings was taken as an example, and the inhomogeneous loading characteristics of the composite support were analyzed by finite element numerical simulation. Then the feasible methods and their applicability to coordinate the stress of the stope filled with waste rock and tailings were discussed, and the stress coordination scheme based on roof-contacted filling with flexible material was put forward. Finally, the effectiveness of the stress coordination scheme was verified by elastic mechanics analysis and numerical simulation. The results show that most of the loads are concentrated on the relatively rigid waste rock filling body, and the bearing capacity of tailings filling body is not fully utilized, which is not conducive to the safety and stability of the composite support body. With the stress coordination scheme based on roof-contacted filling with flexible material, roof-contacted filling with small thickness flexible material can effectively improve the inhomogeneous loading of the composite support body and the supporting efficiency of the filling body.

Key words: stope, alternately filling with waste rock and tailings, composite support body, inhomogeneous loading, stress coordination

CLC Number:

X936

WANG Qihu, ZHANG Guangquan, YE Yicheng, JIANG Wei. Study on stress coordination of composite support body in stope filled alternately with waste rock and tailings[J]. China Safety Science Journal, 2019, 29(4): 96-103.

References

[1] 王贤来,姚维信,王虎,等.矿山废石全尾砂充填研究现状与发展趋势[J].中国矿业,2011,20(9): 76-79.
WANG Xianlai, YAO Weixin, WANG Hu, et al. The directions of R&D on backfill with waste rock and total tailings in underground mine[J].China Mining Magazine,2011,20(9): 76-79.
[2] 韩斌,吴爱祥,王贻明,等.低强度粗骨料超细全尾砂自流胶结充填配合比优化及应用[J].中南大学学报:自然科学版,2012,43(6): 2 357-2 362.
HAN Bin, WU Aixiang, WANG Yiming, et al. Optimization and application of cemented hydraulic fill (CHF) with low strength aggregate and extra fine grain full tailings [J]. Journal of Central South University:Science and Technology, 2012,43(6): 2 357-2 362.
[3] 杨坚,尹土兵,刘科伟,等.全尾砂胶结充填体强度影响因素响应面法研究[J].中国安全科学学报,2017,27(12): 103-109.
YANG Jian, YIN Tubing, LIU Kewei, et al.Study on factors affecting strength of tailings backfill body with response surface method[J].China Safety Science Journal,2017,27(12): 103-109.
[4] 张吉雄,缪协兴.煤矿矸石井下处理的研究[J].中国矿业大学学报,2006,35(2): 197-200.
ZHANG Jixiong, MIAO Xiexing. Underground disposal of waste in coal mine[J].Journal o f China University of Mining & Technology,2006,35(2): 197-200.
[5] 宋卫东,任海锋,曹帅.侧限压缩条件下充填体与岩柱相互作用机理[J].中国矿业大学学报,2016,45(1):49-55,95.
SONG Weidong, REN Haifeng, CAO Shuai. Interaction mechanism between backfill and rock pillar under confined compression condition[J].Journal o f China University of Mining & Technology,2016,45(1):49-55,95.
[6] 戴华阳,郭俊廷,阎跃观,等.“采-充-留”协调开采技术原理与应用[J].煤炭学报,2014, 39(8): 1 602-1 610.
DAI Huayang, GUO Junting, YAN Yueguan, et al. Principle and application of subsidence control technology of mining coordinately mixed with backfilling and keeping[J].Journal of China Coal Society,2014, 39(8): 1 602-1 610.
[7] LIU Zhixiang, LAN Ming, XIAO Siyou, et al. Damage failure of cemented backfill and its reasonable match with rock mass [J]. Transactions Nonferrous Metals Society of China, 2015,25(3): 954-959.
[8] 杜坤,李地元,金解放,等.充填体与岩体能量和强度匹配的分析及应用[J].中国安全科学学报,2011,21(12): 82-87.
DU Kun, LI Diyuan, JIN Jiefang, et al. Matching analysis of energy and strength between backfill and rock mass and its application[J].China Safety Science Journal,2011,21(12): 82-87.
[9] 武汉科技大学.一种缓倾斜松软顶板薄矿床充填采矿方法:中国,CN201310096731.6[P].2013- 06-12.
[10] 王其虎. 地下开采中接触带复合岩体非协调变形及控制研究[D].武汉:武汉科技大学,2015.
WANG Qihu. Study on contact zone composite rock mass incompatible deformation and control in underground mining[D].Wuhan:Wuhan University of Science and Technology,2015.
[11] LIU Yanzhang, YE Yicheng, SHENG Jianlong, et al. Stope parameter selection of Exi Iron ores based on analysis of surface deformations[C]. Proceedings of 2011 AASRI Conference on Artificial Intelligence and Industry Application (AASRI-AIIA 2011), 2011: 230-234.
[12] 吴琼,彭龙辉.砂岩骨料用于万达高速公路低等级混凝土的试验研究[J].公路工程,2013,38(5): 161-164.
WU Qiong, PENG Longhui. Studies on use of sandstone aggregate for low-grade concrete of Wanzhou-Dazhou highway[J].Highway Engineering,2013,38(5): 161-164.

Study on stress coordination of composite support body in stope filled alternately with waste rock and tailings

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