Influence of roadway cross-section mutation on the propagation of outburst shock wave

ZHONG Zhen; ZHANG Leilin; SHI Biming; MA Yankun; ZHANG Yu; NIU Yihui

Safety in Coal Mines > 2021 > 52(1): 1-7.

ZHONG Zhen, ZHANG Leilin, SHI Biming, MA Yankun, ZHANG Yu, NIU Yihui. Influence of roadway cross-section mutation on the propagation of outburst shock wave[J]. Safety in Coal Mines, 2021, 52(1): 1-7.

Citation:

Influence of roadway cross-section mutation on the propagation of outburst shock wave

More Information

Published Date: January 19, 2021

Graphical Abstract

Abstract

Abstract

In order to study the influence of roadway cross-section mutation on the shock wave propagation and the destruction of shock wave overpressure impulse, based on the experiment and numerical simulation, by using self-built experimental system for the propagation of coal and gas outburst shock wave and combining with the establishment of three-dimensional numerical model of shock wave propagation in varied-section roadway, the propagation law of outburst shock wave under different initial gas pressures was studied. The results showed that the pressure change in the roadway after outburst is divided into two stages of the initial stage of shock disturbance and the pressure attenuation stage, the results indicated that the peak value of the overpressure in the initial stage of shock disturbance is greater than the pressure attenuation stage. However, the overpressure impulse of the former is less than that of the latter, taking the initial pressure of 0.6 MPa as an example, the calculation results showed that the overpressure impulse of the pressure attenuation section is 52.4% higher than the initial stage of shock disturbance. Moreover, with the propagation of shock wave in the roadway, the total shock wave impulse appears to decay first and then increase. After outburst, the shock wave overpressure attenuates with distance first; in the process of the shock wave being introduced into the small diameter roadway from the large diameter roadway, a local high pressure area was formed due to wall reflection, which makes the overpressure strength rise at 0.65 m in front of the cross-section, showing a change rule of attenuation first and then increase.
- coal and gas outburst,
- roadway cross-section mutation,
- shock wave overpressure,
- impulse,
- numerical simulation

FullText(HTML)

References (22)

References

[1]	袁亮.煤矿典型动力灾害风险判识及监控预警技术研究进展[J].煤炭学报,2020,45(5):1557-1566. YUAN Liang. Research progress on risk identification, assessment, monitoring and early warning technologies of typical dynamic hazards in coal mines[J]. Journal of China Coal Industry, 2020, 45(5): 1557-1566.
[2]	DU Feng, WANG Kai, GUO Yangyang, et al. The mechanism of rockburst-outburst coupling disaster considering the coal-rock combination: an experiment study[J]. Geomechanics and Engineering, 2020, 22(3): 255-264.
[3]	程亮,许江,周斌,等.不同瓦斯压力对煤与瓦斯突出两相流传播规律的影响研究[J].岩土力学,2020,41(8):1-8. CHENG Liang, XU Jiang, ZHOU Bin, et al. The influence of different gas pressures on the propagation law of coal and gas outburst two-phase flow[J]. Rock and Soil Mechanics, 2020, 41(8): 1-8.
[4]	萨文科C K.井下空气冲击波[M].北京:冶金工业出版社,1979.
[5]	蔺照东,李如江,陈兴,等.水平管道截面积突然扩大对冲击波传播的影响[J].煤矿安全,2014,45(5):141-147. LIN Zhaodong, LI Rujiang, CHEN Xing, et al. The effect of suddenly extended cross-sectional area of horizontal pipe on the explosion shock wave propagation[J]. Safety in Coal Mines, 2014, 45(5): 141-147.
[6]	王凯,周爱桃,魏高举,等.巷道截面变化对突出冲击波传播的影响[J].煤炭学报,2012,37(6):989-993. WANG Kai, ZHOU Aitao, WEI Gaoju, et al. Effects of changes in roadway section on outburst shock wave propagation[J]. Journal of Coal Industry, 2012, 37(6): 989-993.
[7]	王凯,王亮,杜锋,等.煤粉粒径对突出瓦斯-煤粉动力特征的影响[J].煤炭学报,2019,44(5):1369-1377. WANG Kai, WANG Liang, DU Feng, et al. Effect of coal particle size on outstanding gas-pulverized coal dynamic characteristics[J]. Journal of China Coal Society, 2019, 44(5): 1369-1377.
[8]	ZHOU Bin, XU Jiang, PENG Shoujian, et al. Experimental analysis of the dynamic effects of coal-gas outburst and a protean contraction and expansion flow model[J]. Natural Resources Research, 2020, 29(3): 1617-1637.
[9]	AN Fenghua, CHENG Yuanping, WANG Liang, et al. A numerical model for outburst including the effect of adsorbed gas on coal deformation and mechanical properties[J]. Computers and Geotechnics, 2013, 54: 222.
[10]	NIE Baisheng, MA Yankun, HU Shoutao, et al. Laboratory study phenomenon of coal and gas outburst based on a mid-scale simulation system[J]. Scientific Reports, 2019, 9(1): 1-12.
[11]	ZHOU Aitao, ZHANG Meng, WANG Kai, et al. Airflow disturbance induced by coal mine outburst shock waves: a case study of a gas outburst disaster in China[J]. International Journal of Rock Mechanics and Mining Sciences, 2020, 128: 1-11.
[12]	XUE Sheng, ZHENG Chunshan, ZHENG Xiaoliang, et al. Experimental determination of the outburst threshold value of energy strength in coal mines for mining safety[J]. Process Safety and Environment Protection, 2020, 138: 263-268.
[13]	綦耀光,刘冰,张芬娜,等.煤层气井负压射流快速排煤粉装置研究[J].中国矿业大学学报,2014,43(1):72-78. QI Yaoguang, LIU Bing, ZHANG Fenna, et al. Study of coal particles vacuuming cleanout jet pump in coalbed methane wells[J]. Journal of China University of Mining & Technology, 2014, 43(1): 72-78.
[14]	WANG Kai, ZHOU Aitao, ZHANG Jianfang, et al. Real-time numerical simulations and experimental research for the propagation characteristics of shock waves and gas flow during coal and gas outburst[J]. Safety Science, 2012, 50(4): 835-841.
[15]	王磊,司荣军,苗磊,等.障碍物压力反射特性对瓦斯爆炸传播影响的数值模拟研究[J].中国安全生产科学技术,2020,16(8):106-112. WANG Lei, SI Rongjun, MIAO Lei, et al. Numerical simulation research on influence of obstacle pressure reflection characteristics on gas explosion propagation[J]. Journal of Safety Science and Technology, 2020, 16(8): 106-112.
[16]	昝文涛,洪滔,董贺飞.带管道连接的空间中悬浮铝粉尘爆轰波传播数值模拟[J].含能材料,2017,25(6):106-112. ZAN Wentao, HONG Tao, DONG Hefei. Numerical simulation of detonation wave propagation of suspended aluminum dust in space with pipe connection[J].Journal of Energetic Materials, 2017, 25(6): 106-112.
[17]	杨前意,石必明,张雷林,等.拐弯角度对瓦斯爆炸诱导煤尘爆炸的影响研究[J].中国安全科学学报,2019,29(7):58-63. YANG Qianyi, SHI Biming, ZHANG Leilin, et al. Study on the influence of turning angle on gas explosion-induced coal dust explosion[J]. Chinese Journal of Safety Science, 2019, 29(7): 58-63.
[18]	Li QM, Meng H. Pulse loading shape effects on pressure-impulse diagram of an elastic-plastic, single-degree-of-freedom structural model[J]. International Journal of Mechanical Science, 2002, 44(9): 1985-1998.
[19]	田诗雅,刘剑,高科.密闭管道瓦斯爆炸冲击波冲量及压力上升速率的实验研究[J].中国安全生产科学技术,2015(8):16-21. TIAN Shiya, LIU Jian, GAO Ke. Experimental study on impulse impulse and pressure rise rate of gas explosion in closed pipelines[J]. China Safety Science and Technology, 2015(8): 16-21.
[20]	李重情,穆朝民,许登科,等.空腔长度对瓦斯爆炸冲击波传播影响研究[J].采矿与安全工程学报,2018, 35(6):1293-1300. LI Zhongqing, MU Chaomin, XU Dengke, et al. Influence of cavity length on shock wave propagation of gas explosion[J]. Journal of Mining and Safety, 2018, 35(6): 1293-1300.
[21]	王新颖,王树山,卢熹,等.空中爆炸冲击波对生物目标的超压-冲量准则[J].爆炸与冲击,2018,36(1):106-111. WANG Xinying, WANG Shushan, LU Xi, et al. Overpressure-impulse damage criterion of air shock waves on biological targets[J]. Explosion and Shock Waves, 2018, 36(1): 106-111.
[22]	RUDAKOV D, SOBOLEV V. A mathematical model of gas flow during coal outburst initiation[J]. International Journal of Mining and Technology, 2019, 29(5): 791-796.

[1]	ZHOU Xin, ZHOU Yuncheng, JIN Shujun, LIU Xiaodan, LIU Hui, GUO Yu. Research on secondary node system architecture of coal industry Internet identity resolution[J]. Safety in Coal Mines, 2022, 53(3): 140-145.
[2]	PENG Suping, LU Yongxu. High-resolution 3D Seismic Prediction Method for Hidden Dangers of Coal and Gas Outburst Hazard[J]. Safety in Coal Mines, 2020, 51(10): 34-38.
[3]	LENG Hongwei, TAO Qiuxiang, LIU Guolin. Mining Subsidence Monitoring Based on Combination Method of Multi-Look and Full-Resolution Interferogram[J]. Safety in Coal Mines, 2020, 51(2): 124-127.
[4]	LI Wei, LI Jiliang. Application of Three-dimensional Seismic Exploration in Prediction of Coal Seam Thickness[J]. Safety in Coal Mines, 2017, 48(s1): 80-85.
[5]	QU Bao. Key Technology of Gas Control at Working Face of Thin Coal Seam[J]. Safety in Coal Mines, 2017, 48(5): 89-91.
[6]	ZHANG Feng, GAO Zhaoning, MENG Xiangrui, ZHANG Wanbin. Application of High-resolution Electrical Apparatus on Confined Water Mining Similar Simulation[J]. Safety in Coal Mines, 2014, 45(4): 145-148.
[7]	LIU Jian-gao, XIE Xiao-ping, LIU Zong-zhu. Effect Analysis on Pressure Relief for Protective Seam Mining of Thin Coal Seam in High-gas Coal Seam Group[J]. Safety in Coal Mines, 2013, 44(10): 192-195.
[8]	YU Yong, LIU Zhen-guo. Experimental Study of Using TerraSAR-X Image to Monitor Mine Area Subsidence[J]. Safety in Coal Mines, 2013, 44(4): 75-77.
[9]	ZHANG Shuan-cai. 强矿压小煤柱分层掘进巷道高强联合支护技术[J]. Safety in Coal Mines, 2012, 43(10): 86-88.
[10]	XU Jian-Bing. Practice of the Fully-mechanized Mining Technique with High-power in Thin Seam[J]. Safety in Coal Mines, 2012, 43(8): 164-165,166.

Cited By

Cited by

Periodical cited type(3)

1.	贺斌，晏豪. 基于地质统计学反演的薄煤层识别研究. 中国煤炭. 2024(S1): 336-342 .
2.	单蕊. HSL煤矿中区煤层厚度预测及其变化地质分析. 陕西煤炭. 2023(04): 124-128 .
3.	张昭，邱兆泰，田锦瑞，牛清华，张晓盼，张灯亮，曹秀森，台立勋，段刚，耿晓兵. 基于地震多属性技术解释煤层冲刷变薄. 中国煤炭地质. 2022(11): 63-68 .

Other cited types(0)

Get Citation

XML

Article views (35) PDF downloads (2) Cited by(3)

Turn off MathJax

Article Contents

Abstract

References

Influence of roadway cross-section mutation on the propagation of outburst shock wave

Abstract

References

Related Articles

Cited by

Periodical cited type(3)

Other cited types(0)

Catalog

Influence of roadway cross-section mutation on the propagation of outburst shock wave

Abstract

References

Related Articles

Cited by

Periodical cited type(3)

Other cited types(0)

Catalog

Export File

Citation

Format

Content