- Chinese Core Periodicals
- Chinese Core Journals of Science and Technology
- RCCSE Chinese Authoritative Academic Journals
| Citation: |
YANG Xu, WANG Tao, LI Ming. Full-length hydraulic fracturing pressure relief mechanism and multi-parameter effect anlysis of long horizontal and deep hole in isolated working face[J]. Safety in Coal Mines, 2024, 55（2）: 147−158. DOI: 10.13347/j.cnki.mkaq.20222178
|
To solve the strong dynamic pressure problem faced by the roadways under deep island working face conditions, the three types of overhanging roof in the lateral mining area of the working face, overhanging roof in the side of the mining area of the working face and overhanging roof of the upper high rock structure under complex stress condition in the back mining roadway are analyzed. The type of deep hole fracturing is analyzed, and a full-length hydraulic fracturing arrangement based on long horizontal holes is proposed. It has been applied in 3203 island working face of a mine. By fracturing long horizontal holes in different layers of target rock, the full-length pressure relief treatment of strong dynamic pressure roadway in isolated island working face is realized. The mine pressure is observed in stope and roadway and the evaluation indexes are selected. Through multi-parameter and phased analysis, it can be found that: this pressure relief method can build a weakening band in the roof, achieve the effect of improving the spatial structure of the end of the working face and the roof above the goaf, shorten the working face periodic weighting distance, reduce the peak value of the leading supporting stress of the working face, optimize the distribution state of the stress field in the leading area of the working face from the perspective of time and space, transfer the high stress of the coal pillar and the surrounding rock of the roadway, and reduce the influence of mining stress. The amount of roadway deformation during mining is significantly reduced, and the safe and efficient mining of isolated island working face is realized.
| [1] |
康红普,王国法,姜鹏飞,等. 煤矿千米深井围岩控制及智能开采技术构想[J]. 煤炭学报,2018,43(7):1789−1800.
KANG Hongpu, WANG Guofa, JIANG Pengfei, et al. Conception for strata control and intelligent mining technology in deep coal mines with depth more than 1 000 m[J]. Journal of China Coal Society, 2018, 43(7): 1789−1800.
|
| [2] |
张农,陈红,陈瑶. 千米深井高地压软岩巷道沿空留巷工程案例[J]. 煤炭学报,2015,40(3):494−501.
ZHANG Nong, CHEN Hong, CHEN Yao. An engineering case of gob-side entry retaining in one kilometer-depth soft rock roadway with high ground pressure[J]. Journal of China Coal Society, 2015, 40(3): 494−501.
|
| [3] |
康红普,范明建,高富强,等. 超千米深井巷道围岩变形特征与支护技术[J]. 岩石力学与工程学报,2015,34(11):2227−2241.
KANG Hongpu, FAN Mingjian, GAO Fuqiang, et al. Deformation and support of rock roadway at depth more than 1 000 meters[J]. Chinese Journal of Rock Mechanics and Engineering, 2015, 34(11): 2227−2241.
|
| [4] |
朱斯陶,姜福兴,刘金海,等. 我国煤矿整体失稳型冲击地压类型、发生机理及防治[J]. 煤炭学报,2020,45(11):3667−3677.
ZHU Sitao, JIANG Fuxing, LIU Jinhai, et al. Types, occurcenec mechanism and prevention of overall istability induced rockbursts in China coal mines[J]. Journal of China Coal Society, 2020, 45(11): 3667−3677.
|
| [5] |
冯宇,姜福兴,李京达. 孤岛工作面围岩整体失稳冲击危险性评估方法[J]. 煤炭学报,2015,40(5):1001−1007.
FENG Yu, JIANG Fuxing, LI Jingda, et al. Evaluation method of rock burst hazard induced by overall instability of island coal face[J]. Journal of China Coal Society, 2015, 40(5): 1001−1007.
|
| [6] |
曹永模,华心祝,杨科,祁连光. 孤岛工作面沿空巷道矿压显现规律研究[J]. 煤矿安全,2013,44(1):43−46.
CAO Yongmo, HUA Xinzhu, YANG Ke, et al. Research on the laws of strata behavior in the gob-side entry of the island mining face[J]. Safety in Coal Mines, 2013, 44(1): 43−46.
|
| [7] |
毛晓东,吴冬梅,崔居青,等. 基于3DEC的断层孤岛工作面回采矿压显现规律的数值模拟与防治措施[J]. 煤矿安全,2017,48(3):194−197.
MAO Xiaodong, WU Dongmei, CUI Juqing, et al. Simulation modeling for mining pressure behavior laws at isolated working face of fault based on 3DEC and it’s control measures[J]. Safety in Coal Mines, 2017, 48(3): 194−197.
|
| [8] |
陈可夯,王朋飞,翟黎伟. 特厚煤层孤岛工作面全煤巷道锚索支护技术研究与应用[J]. 煤矿安全,2021,52(12):106−114.
CHEN Kehang, WANG Pengfei, ZHAI Liwei. Research and application of anchor cable support technology for whole coal roadway in isolated working face of extra-thick coal seam[J]. Safety in Coal Mines, 2021, 52(12): 106−114.
|
| [9] |
康红普,冯彦军. 定向水力压裂工作面煤体应力监测及其演化规律[J]. 煤炭学报,2012,37(12):1953−1959.
KANG Hongpu, FENG Yanjun. Monitoring of stress change in coal seam caused by directional hydraulic fracturing in working face with strong roof and its evolution[J]. Journal of China Coal Society, 2012, 37(12): 1953−1959.
|
| [10] |
吴拥政,康红普. 煤柱留巷定向水力压裂卸压机理及试验[J]. 煤炭学报,2017,42(5):1130−1137.
WU Yongzheng, KANG Hongpu. Pressure relief mechanism and experiment of directional hydraulic fracturing in reused coal pillar roadway[J]. Journal of China Coal Society, 2017, 42(5): 1130−1137.
|
| [11] |
冯彦军,康红普. 定向水力压裂控制煤矿坚硬难垮顶板试验[J]. 岩石力学与工程学报,2012,31(6):1148−1155
FENG Yanjun, KANG Hongpu. Test on hard and stableroof control by means of directional hydraulic fracturing in coal mine[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(6): 1148−1155.
|
| [12] |
赵善坤. 强冲击危险厚煤层孤岛工作面切眼贯通防冲动态调控[J]. 采矿与安全工程学报,2017,34(1):67−73.
ZHAO Shankun. Dynamical control of scour prevention in the isolated thick-seam working face with high outburst risk during its cut transfixion[J]. Journal of Mining & Safety Engineering, 2017, 34(1): 67−73.
|
| [13] |
赵善坤. 深孔顶板预裂爆破与定向水压致裂防冲适用性对比分析[J]. 采矿与安全工程学报,2021,38(4):706−719.
ZHAO Shankun. A comparative analysis of deep hole roof pre-blasting and directional hydraulic fracture for rockburst control[J]. Journal of Mining & Safety Engineering, 2021, 38(4): 706−719.
|
| [14] |
赵善坤,李英杰,柴海涛,等. 陕蒙地区厚硬砂岩顶板定向水力压裂预割缝倾角优化及防冲实践[J]. 煤炭学报,2020,45(S1):150−160.
ZHAO Shankun, LI Yingjie, CHAI Haitao, et al. Pre-existing crack angle optimization of thick sandstone roof during directional hydraulic fracturing and its application to anti-rockburst in Shannxi and Inner Mongolia areas[J]. Journal of China Coal Society, 2020, 45(S1): 150−160.
|
| [15] |
冯仁俊. 煤层群分层水力压裂与多层综合压裂增透效果对比研究[J]. 煤矿安全,2021,52(12):21−28.
FENG Renjun. Comparative study on permeability enhancement effect of separate-layer fracturing and multilayers comprehensive fracturing in coal seam group[J]. Safety in Coal Mines, 2021, 52(12): 21−28.
|
| [16] |
姚壮壮,林府进,武文宾,等. 采煤工作面顺层钻孔分段水力压裂增渗试验[J]. 煤矿安全,2021,52(3):9−13.
YAO Zhuangzhuang, LIN Fujin, WU Wenbin, et al. Permeability enhancement test of staged hydraulic fracturing of bedding drilling borehole in working face[J]. Safety in Coal Mines, 2021, 52(3): 9−13.
|
| [17] |
李文,王广宏,欧聪,等. 不同布孔方式下梳状定向长钻孔水力压裂数值模拟及工程应用[J]. 煤矿安全,2021,52(05):72−77.
LI Wen, WANG Guanghong, OU Cong, et al. Numerical simulation and engineering application of comb -shaped directional long borehole hydraulic fracturing under different arrangement of holes[J]. Safety in Coal Mines, 2021, 52(5): 72−77.
|
| [18] |
张苗,邹明俊,吕乐乐,等. 水力压裂过程中陶粒支撑剂运移规律及粒级配比优化[J]. 煤矿安全,2022,53(2):16−19.
ZHANG Miao, ZOU Mingjun, LYU Lele, et al. Migration law of ceramsite proppant and its granularity matching during coalbed methane fracturing[J]. Safety in Coal Mines, 2022, 53(2): 16−19.
|
| [19] |
薛伟超,李艳增,齐黎明,等. 顺层长钻孔多缝槽控制压裂裂缝扩展规律研究[J]. 煤矿安全,2021,52(4):182−188.
XUE Weichao, LI Yanzeng, QI Liming, et al. Research on law of hydraulic fracturing crack propagation controlled by multi-preset slots in long drilling of coal seam[J]. Safety in Coal Mines, 2021, 52(4): 182−188.
|
| [20] |
夏永学,潘俊锋,谢非,等. 井下超长水平孔分段压裂防冲机理及效果[J]. 煤炭学报 ,2022,47(S1):115−124
XIA Yongxue, PAN Junfeng, XIE Fei, et al. Mechanism and effect of the rock burst prevention using overlength horizontal hole staged fracturing technology[J]. Journal of China Coal Society, 2022, 47(S1): 115−124.
|
| [21] |
夏永学,潘俊锋,谢非,等. 冲击地压回采巷道长孔压裂卸压防冲机理及应用研究 [J/OL]. 煤炭学报,2022:1−11. http://doi.org/10.13225/j.cnki.jccs.2021.0895.
XIA Yongxue, PAN Junfeng, XIE Fei, et al. Researchon pressure relief mechanism and application of longhole fracturing in rock burst mining roadway[J/OL].Journal of China Coal Society, 2022: 1−11. http://doi.org/10.13225/j.cnki.jccs.2021.0895.
|
Supported by: Beijing Renhe Information Technology Co., Ltd. 
DownLoad: