煤矿深部巷道软弱围岩密集钻孔卸压技术与应用

doi:10.13722/j.cnki.jrme.2023.1036

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Abstract The contradiction between high stress and low strength in deep surrounding rock of coal mines is a key factor leading to large deformation and failure in deep roadways. In order to investigate borehole pressure relief technology in soft rock of deep roadways，the evolution characteristics of the disturbed stress field were analysed. Then，the mechanism of borehole pressure relief in soft rock under high stress is revealed，and the reasonable design method of borehole group is proposed. Three layout modes of pressure relief boreholes were proposed，including parallel layout，fan-layout and pipe-shed layout. The advantages and disadvantages of each layout modes were compared and analysed. Finally，an application experiment is carried out in a deep roadway with soft rock in Guqiao Coal Mine. A total of 96 pressure relief boreholes were drilled using the fan-shaped layout method. Surface displacement monitoring results indicated that，compared with the roadway near similar geological conditions in the non-depressurized area，the deformation of the surrounding rock in the depressurized section can be reduced by about 35.71%，the roof subsidence by approximately 33.43%，and the floor heave by approximately 35.84%. The stress release rate at 12 m depth inner the rock mass is approximately 18.5%. Our research demonstrates that reasonable drilling pressure relief can effectively reduce the concentrated stress，which is conducive to the stability control of roadway and the prevention and control of large deformation disasters. Pressure relief technology using dense borehole can be applied as an auxiliary means for the prevention and controlling large deformation disasters in deep，high-stress，weak surrounding rock.

Key words： mining engineering coal mine soft rock high geostress drilling pressure relief stress evolution

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	Articles by authors
	KANG Yongshui1
	2
	GENG Zhi1
	2
	LIU Bin1
	ZHANG Rui3
	LI Xiang3
	LI Yinyu1

Cite this article:

KANG Yongshui1,2,GENG Zhi1, et al. Pressure relief technology using dense borehole in soft surrounding rock of deep coalmine roadway and its application[J]. , 2024, 43(S1): 3187-3194.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2023.1036 OR http://rockmech.whrsm.ac.cn/EN/Y2024/V43/IS1/3187

[1]	武强. 向地球深部进军[N]. 光明日报，2023-09-18.(WU Qiang. March to the deep earth[N]. Guangming Daily，2023-09-18. (in Chinese))
[11]	李俊平，王红星，王晓光，等. 卸压开采研究进展[J]. 岩土力学，2014，35(增2)：350-358.(LI Junping，WANG Hongxing，WANG Xiaoguang，et al. Research progress in pressure-relief mining[J]. Rock and Soil Mechanics，2014，35(Supp.2)：350-358.(in Chinese))
[10]	王御宇，李学锋，李向东. 深部高应力卸压开采研究[J]. 矿冶工程，2005，25(4)：4-7.(WANG Yuyu，LI Xuefeng，LI Xiangdong. Study on deep high stress pressure relief mining[J]. Mining and Metallurgy Engineering，2005，25(4)：4-7.(in Chinese))
[20]	高永格，靳志新，孟晓强，等. 钻孔孔径及布置方式对煤巷卸压效果的影响[J]. 煤炭技术，2017，36(1)：6-8.(GAO Yongge，JIN Zhixin，MENG Xiaoqiang，et al. The influence of borehole diameter and arrangement on the pressure relief effect of coal roadway[J]. Coal Technology，2017，36(1)：6-8.(in Chinese))
[9]	谢和平，高峰，鞠杨. 深部岩体力学研究与探索[J]. 岩石力学与工程学报，2015，34(11)：2 161-2 178.(XIE Heping，GAO Feng，JU Yang. Research and exploration of deep rock mechanics[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(11)：2 161-2 178.(in Chinese))
[19]	MOGI K. Effect of the intermediate principal stress on rock failure[J]. Journal of Geophysical Research，1967，72(20)：5 117-5 131.
[7]	杨仁树，朱晔，李永亮，等. 弱胶结软岩巷道层状底板底鼓机制及控制对策[J]. 采矿与安全工程学报，2020，37(3)：443-450. (YANG Renshu，ZHU Ye，LI Yongliang，et al. Mechanism and control countermeasures of bed heave of layered floor in weak cemented soft rock roadway[J]. Journal of Mining and Safety Engineering，2020，37(3)：443-450.(in Chinese))
[17]	ORTLEPP W D，STACEY T R. Rockburst mechanisms in tunnels and shafts[J]. Tunnelling and Underground Space Technology，1994，9(1)：59-65.
[2]	姜鹏飞，康红普，王志根，等. 千米深井软岩大巷围岩锚架充协同控制原理、技术及应用[J]. 煤炭学报，2020，45(3)：1 020-1 035. (JIANG Pengfei，KANG Hongpu，WANG Zhigen，et al. The principle，technology and application of anchorage coordinated control of surrounding rock in soft rock tunnels in thousand-meter deep wells[J]. Journal of China Coal Society，2020，45(3)：1 020-1 035.(in Chinese))
[4]	康永水，耿志，刘泉声，等. 我国软岩大变形灾害控制技术与方法研究进展[J]. 岩土力学，2022，43(8)：2 035-2 059.(KANG Yongshui，GENG Zhi，LIU Quansheng，et al. Research progress on support technology and methods for soft rock with large deformation hazards in China[J]. Rock and Soil Mechanics，2022，43(8)：2 035-2 059.(in Chinese))
[12]	祁和刚. 深部高应力巷道综合卸压技术研究与实践[J]. 采矿与安全工程学报，2016，33(6)：1 023-1 029.(QI Hegang. Research and practice of comprehensive pressure relief technology for deep high stress roadway[J]. Journal of Mining and Safety Engineering，2016，33(6)：1 023-1 029.(in Chinese))
[14]	孙珞. 深部“三软”高应力软岩巷道卸压耦合支护技术[J]. 工业安全与环保，2018，44(4)：14-17.(SUN Luo. Pressure relief coupling support technology for deep 'three soft' high stress soft rock roadway[J]. Industrial Safety and Environmental Protection，2018，44(4)：14-17.(in Chinese))
[22]	吴鑫，张东升，王旭锋，等. 深部高应力钻孔卸压的3DEC模拟分析[J]. 煤矿安全，2008，39(10)：51-53.(WU Xin，ZHANG Dongsheng，WANG Xufeng，et al. 3DEC simulation analysis of deep high stress borehole pressure relief[J]. Safety in Coal Mines，2008，39(10)：51-53.(in Chinese))
[5]	KANG Y S，HOU C C，LIU B，et al. Influence of water content on the shear strength of rock joints with clay-rich fillings[J]. Rock Mechanics and Rock Engineering，2023，56(2)：1 437-1 449.
[15]	刘红岗，贺永年，徐金海，等. 深井煤巷钻孔卸压技术的数值模拟与工业试验[J]. 煤炭学报，2007，32(1)：33-37.(LIU Honggang，HE Yongnian，XU Jinhai，et al. Numerical simulation and industrial test of borehole pressure relief technology in deep coal roadway[J]. Journal of China Coal Society，2007，32(1)：33-37.(in Chinese))
[3]	康永水，刘泉声，刘滨，等. 深部岩巷精准介入围岩结构的分步联合支护技术探索[J]. 岩石力学与工程学报，2023，42(11)：2 682-2 693.(KANG Yongshui，LIU QuanSheng，LIU Bin，et al.，Investigation of combined step-wised support technology for precise intervention of surrounding rock structure for deep rock roadway[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(11)：2 682-2 693.(in Chinese))
[6]	康红普，姜鹏飞，冯彦军，等. 煤矿巷道围岩卸压技术及应用[J]. 煤炭科学技术，2022，50(6)：1-15.(KANG Hongpu，JIANG Pengfei，FENG Yanjun，et al. Destressing technology for rock around coal mine roadways and its applications[J]. Coal Science and Technology，2022，50(6)：1-15.(in Chinese))
[8]	谢和平，李存宝，高明忠，等. 深部原位岩石力学构想与初步探索[J]. 岩石力学与工程学报，2021，40(2)：217-232.(XIE Heping，LI Cunbao，GAO Mingzhong，et al. Deep in-situ rock mechanics conception and preliminary exploration[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(2)：217-232.(in Chinese))
[13]	刘赫赫. 大直径钻孔卸压防治冲击地压探寻[J]. 中国金属通报，2022，(6)：129-131.(LIU Hehe. Exploration of large diameter borehole pressure relief to prevent rock burst[J]. China Metal Bulletin，2022，(6)：129-131.(in Chinese))
[16]	张海东. 深部巷道大直径钻孔卸压数值模拟及参数设计[J]. 江西煤炭科技，2017，38(2)：190-193.(ZHANG Haidong. Numerical simulation and parameter design of large-diameter borehole pressure relief in deep roadway[J]. Jiangxi Coal Science and Technology，2017，38(2)：190-193.(in Chinese))
[18]	REYES O，EINSTEIN H H. Failure mechanisms of fractured rock—A fracture coalescence model[C]// Proceedings of 7th International Congress on Rock Mechanics. Aachen：[s. n.]，1991：333-340.
[21]	李杨杨，张惟昭. 基于CT技术的唐口煤矿大直径钻孔卸压效果研究[J]. 山东煤炭科技，2020，234(2)：173-176.(LI Yangyang，ZHANG Weizhao. Study on pressure relief effect of large diameter borehole in Tangkou Coal Mine based on CT technology[J]. Shandong Coal Science and Technology，2020，234(2)：173-176.(in Chinese))
[23]	易恩兵，牟宗龙，窦林名，等. 软及硬煤层钻孔卸压效果对比分析研究[J]. 煤炭科学技术，2011，39(6)：1-5.(YI Enbing，MOU Zonglong，DOU Linming，et al. Comparative analysis of pressure relief effect of soft and hard coal seam drilling[J]. Coal Science and Technology，2011，39(6)：1-5.(in Chinese))