Study on large deformation and failure characteristics of water-rich roof and zoning dynamic support technology

REN Jianhui; YANG Sen; LI Xuanliang; YAO Shimao; SONG Xiaofei; LIU Yaohui

doi:10.12075/j.issn.1004-4051.20220958

CHINA MINING MAGAZINE > 2023 > 32(11): 152-159. > DOI: 10.12075/j.issn.1004-4051.20220958

REN Jianhui，YANG Sen，LI Xuanliang，et al. Study on large deformation and failure characteristics of water-rich roof and zoning dynamic support technology[J]. China Mining Magazine，2023，32（11）：152-159. DOI: 10.12075/j.issn.1004-4051.20220958

Citation:

PDF (2491 KB)

Study on large deformation and failure characteristics of water-rich roof and zoning dynamic support technology

1.
CHN Energy Shendong Coal Group Co., Ltd., Shenmu 719315, China
2.
CCTEG Xi’an Research Institute（Group）Co., Ltd., Xi’an 710077, China

More Information

Received Date: December 26, 2022
Available Online: September 04, 2023

Graphical Abstract

Abstract

Abstract

The water-rich roof has a strong impact on mining roadway excavation and service period. The water absorption or loss process of roadway roof will weaken its integrity, causing large deformation of roadway and affecting the safe and efficient production of working face. Taking the 22204 working face of Buertai Coal Mine as the research object, defines the distribution characteristics of the plastic zone in different sections of roadway by using the comprehensive research methods of theoretical analysis, field detection and numerical simulation. It is believed that the plastic zone in water bearing section is about 5 m under the condition of no support, which is obviously 2 m larger than the plastic zone in the normal section, and the plastic zones are obviously asymmetric. At the same time, increasing the support strength can significantly control the plastic zone radius of water bearing roadway. On this basis, the zoning dynamic support scheme of “anchor cable + steel belt” reinforcement support for roadway in roof water-rich section is proposed and industrial practice is carried out, and the surrounding rock control effect is remarkable.

FullText(HTML)

References (20)

References

[1]	张培森, 侯季群, 赵成业, 等. 不同应力状态下底板岩体渗流特性分析研究[J]. 煤炭科学技术,2022,50(1):127-133. ZHANG Peisen, HOU Jiqun, ZHAO Chengye, et al. Analysis and study on seepage characteristics of floor rock mass under different stress states[J]. Coal Science and Technology,2022,50(1):127-133.
[2]	马金录. 突水作用下地下水位降落漏斗演变过程分析[J]. 能源与环保,2021,43(8):70-74, 80. MA Jinlu. Analysis of evolution process of groundwater level drop funnel under action of water inrush[J]. China Energy and Environmental Protection,2021,43(8):70-74, 80.
[3]	马立新, 王勇, 吴丽, 等. 煤矿矿井水处理工艺与效益分析[J]. 能源与环保,2017,39(9):61-65. MA Lixin, WANG Yong, WU Li, et al. Coal mine water treatment technology and benefit analysis[J]. China Energy and Environmental Protection,2017,39(9):61-65.
[4]	张会军. 砂质页岩顶板水-岩作用下的力学参数与微观结构变化研究[J]. 煤炭技术,2021,40(8):120-122. ZHANG Huijun. Study on mechanical parameters and micro structure changes of sandy shale roof under water rock interaction[J]. Coal Technology,2021,40(8):120-122.
[5]	阳元中. 富水顶板巷道围岩稳定性分析及其控制[D]. 徐州: 中国矿业大学, 2022.
[6]	杨晓杰, 庞杰文, 娄浩朋. 亭南煤矿强膨胀性软岩巷道底臌变形力学机制[J]. 煤炭学报,2015,40(8):1761-1767. YANG Xiaojie, PANG Jiewen, LOU Haopeng. Deformation mechanical mechanism of strongly swelling floor heave in the soft rock roadway of Tingnan Coal Mine[J]. Journal of China Coal Society,2015,40(8):1761-1767.
[7]	张凯, 郭俊廷, 滕腾. 弱胶结砂质泥岩注水软化与渗流特性试验研究: 以神东矿区为例[J]. 煤炭科学技术,2022,50(2):195-201. ZHANG Kai, GUO Junting, TENG Teng. Experimental study on water-softening and seepage characteristics of weakly cemented sandy mudstone: taking Shendong Coal Mining Area as an example[J]. Coal Science and Technology,2022,50(2):195-201.
[8]	张嘉凡, 程树范, 王焕, 等. 西部弱胶结软岩细观结构及水理特性试验[J]. 煤田地质与勘探,2020,48(3):116-121. doi: 10.3969/j.issn.1001-1986.2020.03.017 ZHANG Jiafan, CHENG Shufan, WANG Huan, et al. Experiment of mesostructure and hydrologic characteristics of weakly cemented soft rocks in Western China[J]. Coal Geology & Exploration,2020,48(3):116-121. doi: 10.3969/j.issn.1001-1986.2020.03.017
[9]	朱先龙, 杨张杰, 潘忠德, 等. 弱胶结富水顶板采动巷道全锚索支护技术[J]. 煤炭技术,2020,39(3):26-30. ZHU Xianlong, YANG Zhangjie, PAN Zhongde, et al. Full anchored cable support technology for dynamic pressure roadway with weakly cemented water-rich roof[J]. Coal Technology,2020,39(3):26-30.
[10]	孙敬涛, 杨丽娟. 破碎岩体强含水层巷道疏水施工控制技术研究[J]. 煤炭工程,2017,49(1):42-45. doi: 10.11799/ce2017010013 SUN Jingtao, YANG Lijuan. Control technology for roadway water drainage construction in strong aquifer with cataclastic rock mass[J]. Coal Engineering,2017,49(1):42-45. doi: 10.11799/ce2017010013
[11]	窦子豪, 赵志宏, 高天阳, 等. 水岩作用下花岗岩裂隙剪切力学特性演化规律[J]. 清华大学学报(自然科学版),2021,61(8):792-798. DOU Zihao, ZHAO Zhihong, GAO Tianyang, et al. Evolution law of water-rock interaction on the shear behavior of granite fractures[J]. Journal of Tsinghua University (Science & Technology),2021,61(8):792-798.
[12]	齐学元, 邓广哲. 浸水耦合作用对煤体强度影响试验研究[J]. 煤炭技术,2022,41(1):4-7. QI Xueyuan, DENG Guangzhe. Experimental study on effect of water immersion coupling on coal strength[J]. Coal Technology,2022,41(1):4-7.
[13]	郭瑞, 洪刚, 张建华, 等. 砂质泥岩单轴抗压强度试验研究[J]. 地下空间与工程学报,2018,14(3):607-612. GUO Rui, HONG Gang, ZHANG Jianhua, et al. Experimental research on uniaxial compressive strength of sandy mudstone[J]. Chinese Journal of Underground Space and Engineering,2018,14(3):607-612.
[14]	王襄禹, 张宏伟, 李国栋. 弱胶结富水顶板巷道围岩控制技术研究[J]. 煤炭科学技术,2018,46(1):88-92, 98. doi: 10.13199/j.cnki.cst.2018.01.012 WANG Xiangyu, ZHANG Hongwei, LI Guodong. Study on surrounding rock control technology of weakly cemented water-rich roof in roadway[J]. Coal Science and Technology,2018,46(1):88-92, 98. doi: 10.13199/j.cnki.cst.2018.01.012
[15]	陈涛, 刘文岗. 深部特厚顶板富水煤层综放采高分析与安全开采技术[J]. 中国矿业,2017,26(5):107-111. doi: 10.3969/j.issn.1004-4051.2017.05.020 CHEN Tao, LIU Wengang. Full-mechanized caving mining height analysis and safety mining technology of supper thick coal seam with water-rich roof in deep[J]. China Mining Magazine,2017,26(5):107-111. doi: 10.3969/j.issn.1004-4051.2017.05.020
[16]	郭红波, 方刚, 贺晓浪. 大海则煤矿顶板富水含水层下开采水害防治研究[J]. 能源与环保,2020,42(11):16-20,32. GUO Hongbo, FANG Gang, HE Xiaolang. Research on prevention and control of water hazards in mining under water-rich aquifers of the roof in Dahaize Coal Mine[J]. China Energy and Environmental Protection,2020,42(11):16-20,32.
[17]	刘晓飞. “变堵为疏”防治水方案在赵家寨煤矿的应用[J]. 能源与环保,2018,40(10):50-54, 59. LIU Xiaofei. Application of “change plugging to dredging” water control scheme in Zhaojiazhai Coal Mine[J]. China Energy and Environmental Protection,2018,40(10):50-54, 59.
[18]	杜明启, 范钢伟, 张东升, 等. 富水条件下弱胶结煤矸互层顶板巷道围岩控制技术研究[J]. 煤炭技术,2021,40(11):7-11. DU Mingqi, FAN Gangwei, ZHANG Dongsheng, et al. Research on surrounding rock control technology of roadway with weakly cemented coal-gangue interbedded roof under water-rich conditions[J]. Coal Technology,2021,40(11):7-11.
[19]	张俊敏, 柏建彪, 张伟光. 顶板水对锚固结构的影响及控制研究[J]. 煤炭工程,2019,51(8):97-100. ZHANG Junmin, BAI Jianbiao, ZHANG Weiguang. Study on influence and control of roof water on anchorage structure[J]. Coal Engineering,2019,51(8):97-100.
[20]	倪国荣. 圆形井巷含水围岩的岩体-水力学分析[J]. 长沙铁道学院学报,1989(3):57-68. NI Guorong. Rock mass hydraulic analysis of water bearing surrounding rock in round shaft[J]. Journal of Changsha Railway Institute,1989(3):57-68.