煤矿水力压裂巷道卸压技术应用及效果评价

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (2266 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Hydraulic fracturing in roadway pressure relief is an effective method for controlling the surrounding rock of roadways. Using the 15217 coal pillar working face at the Hongliulin Coal Mine as the engineering background，this study constructs a 16-channel microseismic monitoring system. By analyzing the activity patterns of microseismic events within the roof before and after hydraulic fracturing and during face mining，combined with mine pressure monitoring data，the effectiveness of hydraulic fracturing in roadway pressure relief was evaluated. The results indicate that the high-precision underground sensor array effectively captures microseismic events induced by hydraulic fracturing with high localization accuracy. The microseismic events align closely with the fracturing operation period，and during non-fracturing periods，especially within five hours after fracturing ends，microseismic events continue to increase. Hydraulic fracturing causes both direct and indirect damage to the roof strata. The hydraulic fracturing diffusion radius can reach approximately 50 meters，with a significant impact radius of around 30 meters. Microseismic events are concentrated around the borehole，and their dense distribution area presents an asymmetrical shape. During the mining process，stress concentration zones are observed both in front and behind the working face. The stress concentration zone in front of the working face is 30–35 meters from the coal wall，while the one behind the working face is 40–45 meters from the coal wall，with the most concentrated distribution of microseismic events within these ranges. The vertical stress changes within the coal pillar during initial mining can be divided into three stages，with the vertical stress distribution in the coal pillar profile showing a“single peak”shape. During secondary mining，the vertical stress near the working face reaches its maximum value about 15–20 meters ahead of the face but remains significantly lower than in unrelieved working faces. Compared to unrelieved working faces，the stress，change amplitude，and impact duration on the bolts(cables) are significantly reduced.

Key words： mining engineering hydraulic fracturing roadway pressure relief microseismic monitoring microseismic events strata control

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	SHI Yao1
	WANG Zhanling1
	CHENG Lixing1
	XU Shida2

Cite this article:

SHI Yao1,WANG Zhanling1,CHENG Lixing1, et al. Application and effectiveness evaluation of hydraulic fracturing for roadway pressure relief in coal mines[J]. , 2025, 44(2): 459-471.

URL:

https://rockmech.whrsm.ac.cn/EN/Y2025/V44/I2/459

[1]	杨俊哲，郑凯歌，王振荣，等. 坚硬顶板动力灾害超前弱化治理技术[J]. 煤炭学报，2020，45(10)：3 371-3 379.(YANG Junzhe，ZHENG Kaige，WANG Zhenrong，et al. Technology of weakening and danger-breaking dynamic disasters by hard roof[J]. Journal of China Coal Society，2020，45(10)：3 371-3 379.(in Chinese))
[2]	杨俊哲，王振荣，吕情绪，等．坚硬顶板超前区域治理技术在神东布尔台煤矿的应用[J]. 煤田地质与勘探，2022，50(2)：17-23. (YANG Junzhe，WANG Zhenrong，LYU Qingxu，et al. Application of advanced regional treatment technology of hard roof in Buertai Coal Mine of Shendong Coal Group[J]. Coal Geology and Exploration，2022，50(2)：17-23.(in Chinese))
[3]	徐晓鼎. 曹家滩矿井特厚煤层沿空巷道强矿压显现机制及卸压控制研究[J]. 岩石力学与工程学报，2023，42(12)：3 120.(XU Xiaoding. Study on strong rock pressure behavior mechanism and pressure relief control of gob-side entry in Caojiatan Mine with extra thick coal seam[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(12)：3 120.(in Chinese))
[4]	曹健，黄庆享. 厚土层下浅埋煤层开采覆岩倾向结构分区与下沉预计模型[J]. 采矿与安全工程学报，2022，39(2)：264-272.(CAO Jian，HUANG Qingxiang. Overburden-inclined structure zones and subsurface prediction model in shallow buried thick coal seam mining[J]. Journal of Mining and Safety Engineering，2022，39(2)：264-272.(in Chinese))
[5]	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 Yanyun et al. Stress technology for rock around coal mine roadways and its applications[J]. Coal Science and Technology，2022，50(6)：1-15.(in Chinese))
[6]	康红普，冯彦军，赵凯凯. 煤矿岩层压裂技术与装备的发展方向[J]. 采矿与岩层控制工程学报，2024，6(1)：013031.(KANG Hongpu，FENG Yanjun，ZHAO Kaikai. Development trends in hydraulic fracturing technology and equipment for strata control in underground coal mines[J]. Journal of Mining and Strata Control Engineering，2024，6(1)：013031.(in Chinese))
[7]	高富强. 工作面坚硬顶板水力压裂对采动应力影响的数值模拟研究[J]. 采矿与岩层控制工程学报，2021，3(2)：023032.(GAO Fuqiang. Influence of hydraulic fracturing of strong roof on mining-induced stress-insight from numerical simulation[J]. Journal of Mining and Strata Control Engineering，2021，3(2)：023032.(in Chinese))
[8]	康红普，冯彦军，张震，等. 煤矿井下定向钻孔水力压裂岩层控制技术及应用[J]. 煤炭科学技术，2023，51(1)：31-44.(KANG Hongpu，FENG Yanjun，ZHANG ZHEN，et al. Hydraulic fracturing technology with directional boreholes for strata control in underground coal mines and its application[J]. Coal Science and Technology，2023，51(1)：31-44.(in Chinese))
[9]	黄炳香，赵兴龙，陈树亮，等．坚硬顶板水压致裂控制理论与成套技术[J]. 岩石力学与工程学报，2017，36(12)：2 954-2 970. (HUANG Bingxiang，ZHAO Xinglong，CHEN Shuliang，et al. Theory and technology of controlling hard roof with hydraulic fracturing in underground mining[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(12)：2 954-2 970.(in Chinese))
[10]	于斌，高瑞，夏彬伟，等. 大空间坚硬顶板地面压裂技术与应用[J]. 煤炭学报，2021，46(3)：800-811.(YU Bin，GAO Rui，XIA Binwei，et al. Ground fracturing technology and application of hard roof in large space[J]. Journal of China Coal Society，2021，46(3)：800-811.(in Chinese))
[11]	石垚，雷瀚，杨新路，等. 煤矿坚硬顶板灾害水力压裂防治技术监测及评估[J]. 煤炭工程，2024，56(2)：122-130.(SHI Yao，LEI Han，YANG Xinlu，et al. Monitoring and evaluation of hydraulic fracturing prevention and control technology for hard roof disaster in coal mine[J]. Coal Engineering，2024，56(2)：122-130.(in Chinese))
[12]	曹安业，王常彬，杨旭，等. 微震定位精度影响下采场裂隙表征与冲击地压预警[J]. 煤炭科学技术，2024，52(2)：1-9.(CAO Anye，WANG Changbin，YANG Xu，et al. Fractures characterization in mining field considering seismic location accuracy and its application on pre-warning coal burst hazards[J]. Coal Science and Technology，2024，52(2)：1-9.(in Chinese))
[13]	钟坤，陈卫忠，赵武胜，等. 煤矿坚硬顶板分段水力压裂防冲效果监测与评价[J]. 中南大学学报：自然科学版，2022，53(7)：2 582-2 593.(ZHONG Kun，CHEN Weizhong，ZHAO Wusheng，et al. Monitoring and evaluation of segmented hydraulic fracturing effect in rock burst prevention on hard roof of coal mine[J]. Journal of Central South University：Science and Technology，2022，53(7)：2 582- 2 593.(in Chinese))
[14]	程关文，王悦，马天辉，等. 煤矿顶板岩体微震分布规律研究及其在顶板分带中的应用-以董家河煤矿微震监测为例[J]. 岩石力学与工程学报，2017，36(增2)：4 036-4 046.(CHENG Guanwen，WANG Yue，MA Tianhui，et al. research on the partitioning method of the overburden in coal mine based on microseismic monitoring[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(Supp.2)：4 036-4 046.(in Chinese))
[15]	王元杰，刘宁，陈法兵，等. 基于井上下微震联合监测技术的地面水平井分段压裂效果分析[J]. 采矿与岩层控制工程学报，2023，5(3)：033011.(WANG Yuanjie，LIU Ning，CHEN Fabing，et al. Analysis of horizontal well staged fracturing effect based on the joint monitoring of surface and underground micro-seismic monitoring technology[J]. Journal of Mining and Strata Control Engineering，2023，5(3)：033011.(in Chinese))
[16]	苗彦平，程利兴，郑旭鹤，等. 浅埋深回采巷道采动应力动态响应特征研究[J]. 采矿与岩层控制工程学报，2022，4(6)：063015.(MIAO Yanping，CHENG Lixing，ZHENG Xuhe，et al. study on dynamic response characteristics of mining stress in shallow deep mining roadway[J]. Journal of Mining and Strata Control Engineering，2022，4(6)：063015.(in Chinese))
[17]	陈亮，邹高鹏，李佳音，等. 顶板垮落高度和垮落角对采场支承压力的影响研究[J]. 煤炭科学技术，2016，44(增2)：62-66.(CHEN Liang，ZOU Gaopeng，LI Jiayin，et al. Study on abutment pressure impact on caving height and angle of roof[J]. Coal Science and Technology，2016，44(Supp.2)：62-66.(in Chinese))