On optimization of pressure-relief parameters of water jet slots in deep rockburst coal seams

HU Yang; CAO Anye; QIN Xufeng; XUE Chengchun; GUO Wenhao; LIU Yaoqi; PENG Yujie

doi:10.11779/CJGE20220451

Volume 45 Issue 7

Turn off MathJax

Article Contents

Abstract

References

Supplements

Chinese Journal of Geotechnical Engineering > 2023 > 45(7): 1509-1516. > DOI: 10.11779/CJGE20220451

HU Yang, CAO Anye, QIN Xufeng, XUE Chengchun, GUO Wenhao, LIU Yaoqi, PENG Yujie. On optimization of pressure-relief parameters of water jet slots in deep rockburst coal seams[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(7): 1509-1516. DOI: 10.11779/CJGE20220451

Citation:

PDF (4467 KB)

On optimization of pressure-relief parameters of water jet slots in deep rockburst coal seams

HU Yang^{1, 2,},
CAO Anye^{2, 3, ,},
QIN Xufeng^{4, 5},
XUE Chengchun²,
GUO Wenhao²,
LIU Yaoqi²,
PENG Yujie²

1.
Yunnan Coal Mine Safety Technology Center Co., Ltd., Kunming 650000, China
2.
School of Mining Engineering, China University of Mining and Technology, Xuzhou 221116, China
3.
Jiangsu Mine Earthquake Monitoring Engineering Laboratory, China University of Mining and Technology, Xuzhou 221116, China
4.
Shandong Xinhe Mining Co., Ltd., Jining 272499, China
5.
Inner Mongolia Zhongtai Energy Yiqi Branch, Ordos 017200, China

More Information

Received Date: April 17, 2022
Available Online: February 19, 2023

Graphical Abstract

Abstract

Abstract

In order to determine the optimal parameters of pressure relief by high-pressure water jet slotting in deep rockburst coal seams, the principles of pressure relief and impact prevention are analyzed through numerical simulation and theoretical deduction. The theoretical model for parameter optimization for four factors, such as drilling spacing and slot radius, is established. Based on the principles of dynamic and static load superpositions, the mechanism of rockburst in the concentrated roadway in mining area No. 730 of a mine is studied, the theoretical parameter values of each influencing factor are obtained, and the similarities and differences of stress, plastic zone and impact risk index under different theoretical parameters are revealed. The results show that all the influencing factors have a great influence on the pressure-relief effects of high-pressure water jet slotting, and there is a significant interaction between the factors. The average vertical stress after pressure relief, elastic energy density, impact danger index and pressure relief cost are used as the effectiveness and economic indexes of pressure-relief parameters, and the advantages and disadvantages of the pressure-relief effects of different parameters are evaluated so as to obtain the optimal pressure-relief parameters of high-pressure water jet slotting under the physical and mechanical properties of the coal seam. After the application of the research results in the contact lane No. 3 of the mining area No. 730, the frequency, total energy and spatial concentration of microearthquakes in the site are greatly reduced, which provides technical support for the safe mining of the working face.
- rockburst,
- coal mine roadway,
- water jet slot,
- parameter optimization,
- numerical simulation

FullText(HTML)

References (17)

References

[1]	窦林名, 田鑫元, 曹安业, 等. 我国煤矿冲击地压防治现状与难题[J]. 煤炭学报, 2022, 47(1): 152-171. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202201011.htm DOU Linming, TIAN Xinyuan, CAO Anye, et al. Present situation and problems of coal mine rock burst prevention and control in China[J]. Journal of China Coal Society, 2022, 47(1): 152-171. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202201011.htm
[2]	XUE C C, CAO A Y, GUO W H, et al. Mechanism and energy evolution characteristics of coal burst in mining thick, deep, and large inclined coal seams: a case study from a Chinese coal mine[J]. Geofluids, 2022, 2022: 1-18.
[3]	王高昂, 朱斯陶, 姜福兴, 等. 高应力厚煤层大巷孤立煤体蠕变失稳冲击机理及防治研究[J]. 岩土工程学报, 2022, 44(9): 1689-1698, 9. doi: 10.11779/CJGE202209014 WANG Gaoang, ZHU Sitao, JIANG Fuxing, et al. Creep instability rock burst mechanism and prevention technology of isolated coal mass in roadways of high-stress thick coal seam[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(9): 1689-1698, 9. (in Chinese) doi: 10.11779/CJGE202209014
[4]	袁亮, 林柏泉, 杨威. 我国煤矿水力化技术瓦斯治理研究进展及发展方向[J]. 煤炭科学技术, 2015, 43(1): 45-49. https://www.cnki.com.cn/Article/CJFDTOTAL-MTKJ201501013.htm YUAN Liang, LIN Baiquan, YANG Wei. Research progress and development direction of gas control with mine hydraulic technology in China coal mine[J]. Coal Science and Technology, 2015, 43(1): 45-49. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-MTKJ201501013.htm
[5]	周新超, 马小晶, 廖翔云, 等. 磨料水射流冲击孔隙岩体的SPH模拟研究[J]. 岩土工程学报, 2022, 44(4): 731-739. doi: 10.11779/CJGE202204016 ZHOU Xinchao, MA Xiaojing, LIAO Xiangyun, et al. Numerical simulation of abrasive water jet impacting porous rock based on SPH method[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(4): 731-739. (in Chinese) doi: 10.11779/CJGE202204016
[6]	YANG Z, DOU L, LIU C, et al. Mechanism of rock burst in roadway side wall and the application of water jet pressure relief technology in deep mine[J]. Journal of Mining & Safety Engineering, 2017, 34(4): 670-677, 729.
[7]	潘俊锋, 马文涛, 刘少虹, 等. 坚硬顶板水射流预制缝槽定向预裂防冲技术试验[J]. 岩石力学与工程学报, 2021, 40(8): 1591-1602. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX202108008.htm PAN Junfeng, MA Wentao, LIU Shaohong, et al. A prevention technology of rock burst based on directional presplitting of water jet prefabricated slot in hard roof[J]. Chinese Journal of Rock Mechanics and Engineering, 2021, 40(8): 1591-1602. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX202108008.htm
[8]	刘生龙, 朱传杰, 林柏泉, 等. 水力割缝空间分布模式对煤层卸压增透的作用规律[J]. 采矿与安全工程学报, 2020, 37(5): 983-990. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL202005016.htm LIU Shenglong, ZHU Chuanjie, LIN Baiquan, et al. The effect of spatial distribution mode of hydraulic slotting on pressure relief and permeability enhancement of the coal seam[J]. Journal of Mining & Safety Engineering, 2020, 37(5): 983-990. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL202005016.htm
[9]	张永将, 郭寿松. 高压水射流环形割缝深度理论模型及应用[J]. 煤炭学报, 2019, 44(增刊1): 126-132. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB2019S1014.htm ZHANG Yongjiang, GUO Shousong. Theoretical model of annular slotting depth for high pressure water jet and its application[J]. Journal of China Coal Society, 2019, 44(S1): 126-132. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB2019S1014.htm
[10]	林柏泉, 刘厅, 邹全乐, 等. 割缝扰动区裂纹扩展模式及能量演化规律[J]. 煤炭学报, 2015, 40(4): 719-727. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201504001.htm LIN Baiquan, LIU Ting, ZOU Quanle, et al. Crack propagation modes and energy evolution within slotting disturbed zone[J]. Journal of China Coal Society, 2015, 40(4): 719-727. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201504001.htm
[11]	镐振, 郭林峰, 赵希栋, 等. 回采巷道围岩冲击破坏能量特征分析[J]. 煤炭学报, 2020, 45(12): 3995-4005. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202012004.htm HAO Zhen, GUO Linfeng, ZHAO Xidong, et al. Analysis of burst failure energy characteristics of mining roadway surrounding rock[J]. Journal of China Coal Society, 2020, 45(12): 3995-4005. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202012004.htm
[12]	贾传洋, 蒋宇静, 张学朋, 等. 大直径钻孔卸压机理室内及数值试验研究[J]. 岩土工程学报, 2017, 39(6): 1115-1122. doi: 10.11779/CJGE201706018 JIA Chuanyang, JIANG Yujing, ZHANG Xuepeng, et al. Laboratory and numerical experiments on pressure relief mechanism of large-diameter boreholes[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(6): 1115-1122. (in Chinese) doi: 10.11779/CJGE201706018
[13]	刘少虹. 动载冲击地压机理分析与防治实践[D]. 北京: 煤炭科学研究总院, 2014. LIU Shaohong. The Study on the Mechanism and Prevention of Dynamic-Loading Rockburst[D]. Beijing: China Coal Research Institute, 2014. (in Chinese)
[14]	李云鹏, 张宏伟, 朱志洁, 等. 冲击危险煤层卸压钻孔安全参数研究[J]. 中国安全科学学报, 2018, 28(11): 122-128. https://www.cnki.com.cn/Article/CJFDTOTAL-ZAQK201811020.htm LI Yunpeng, ZHANG Hongwei, ZHU Zhijie, et al. Study on safety parameters of pressure relief borehole in rockburst coal seam[J]. China Safety Science Journal, 2018, 28(11): 122-128. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZAQK201811020.htm
[15]	王志强, 王鹏, 石磊, 等. 基于沿空巷道围岩应力分析的防冲机理研究[J]. 中国矿业大学学报, 2020, 49(6): 1046-1056. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD202006003.htm WANG Zhiqiang, WANG Peng, SHI Lei, et al. Research on prevention of rock burst based on stress analysis of surrounding rock of gob-side entry[J]. Journal of China University of Mining & Technology, 2020, 49(6): 1046-1056. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD202006003.htm
[16]	李铀, 袁亮, 刘冠学, 等. 圆形巷道围岩扰动区及其临界破坏深度的确定[J]. 采矿与安全工程学报, 2016, 33(5): 795-799. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL201605005.htm LI You, YUAN Liang, LIU Guanxue, et al. Determination of disturbed region and critical failure depth of surrounding rock in circular roadway[J]. Journal of Mining & Safety Engineering, 2016, 33(5): 795-799. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL201605005.htm
[17]	赵阳升, 冯增朝, 万志军. 岩体动力破坏的最小能量原理[J]. 岩石力学与工程学报, 2003, 22(11): 1781-1783. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200311004.htm ZHAO Yangsheng, FENG Zengchao, WAN Zhijun. Least energy priciple of dynamical failure of rock mass[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(11): 1781-1783. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200311004.htm

Supplements (1)

Supplements
Other Related Supplements
- PDF format
  21-202307-G22-0451一文审稿意见与作者答复 Download(2718KB)

Cited By

Cited by

Periodical cited type(5)

1.	雷国钦，卢勇，戴泽宇，陈青林，张小普. 细粒级尾砂沉降规律及坝体稳定性研究. 有色金属(中英文). 2025(04): 660-667 .
2.	李庚辉，肖启飞，侯英剑. 某选厂高浓度铁尾矿沉积特性试验. 现代矿业. 2025(04): 217-220 .
3.	周罕，付俊，陈永贵，余璨，李嘉淇，李艳林. 沟谷上游式尾矿库的水力分选及沉积规律研究. 矿业研究与开发. 2023(08): 147-151 .
4.	陈青林，戴泽宇，王晓军，李祖贵，谢锦程，廖敏敏. 不同细粒含量尾矿沉降规律与其沉积体孔隙分布特征研究. 中国安全生产科学技术. 2023(12): 79-85 .
5.	李全明，段志杰，于玉贞，师海，李振涛. 尾矿坝沉积结构特征与性能演化规律研究进展. 中国安全生产科学技术. 2022(02): 6-19+2 .

Other cited types(4)

Get Citation

PDF

XML

Article views PDF downloads Cited by(9)

On optimization of pressure-relief parameters of water jet slots in deep rockburst coal seams

Abstract

References

Supplements

Other Related Supplements

PDF format

Cited by

Periodical cited type(5)

Other cited types(4)

Catalog

Related

Export File

Citation

Format

Content