A New Theoretical Model of Rock Burst-Prone Roadway Support and Its Application

被引:15
作者
Gao, Mingshi [1 ,2 ]
He, Yongliang [1 ,2 ]
Xu, Dong [1 ,2 ]
Yu, Xin [1 ,2 ]
机构
[1] China Univ Min & Technol, Sch Mines, Xuzhou 221116, Jiangsu, Peoples R China
[2] China Univ Min & Technol, State Key Lab Coal Resource & Safe Min, Xuzhou 221116, Jiangsu, Peoples R China
关键词
D O I
10.1155/2021/5549875
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
A rock burst usually causes a roadway collapse or even an instant blockage. When the deformation energy accumulated in the surrounding rock exceeds the minimum energy required for the dynamic destruction of the surrounding rock of a roadway, a rock burst accident will occur. According to statistics, 85% of rock burst accidents occur in roadways. This paper establishes a strong-soft-strong structural model for the rock burst stability control of the surrounding rock of a roadway, and the anti-impact and antiseismic mechanisms of the mechanical model are analysed. The strength, stress transfer, deformation, and energy dissipation characteristics of the strong-soft-strong structure are studied. The stress criterion and energy criterion of rock burst failure in small internal structures are derived for roadway support design. The support scheme of "anchor cable active support + hydraulic lifting support + soft structure energy absorption" is proposed. A steel pipe can be inserted into a borehole drilled into the small internal structure to realize the proposed innovative protection technology for small internal structures by creating a soft structure that can release, absorb, and transfer the pressure by repeatedly cracking the coal and rock mass. The innovation of cracking technology for soft roadway structures has been realized. The roadway tested with this strong-soft-strong enhanced surrounding rock control technology met the production requirements during the mining period. The field test was successful, and the expected support effect was achieved. This work provides a reference for roadway support under similar conditions and can be popularized and applied.
引用
收藏
页数:11
相关论文
共 33 条
[1]  
Brauner G., 1994, Rockbursts in coal mines and their prevention
[2]   A principal component analysis/fuzzy comprehensive evaluation model for coal burst liability assessment [J].
Cai, Wu ;
Dou, Linming ;
Si, Guangyao ;
Cao, Anye ;
He, Jiang ;
Liu, Sai .
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2016, 81 :62-69
[3]   The current situation and prevention and control countermeasures for typical dynamic disasters in kilometer-deep mines in China [J].
Chen, Xiangjun ;
Li, Liyang ;
Wang, Lin ;
Qi, Lingling .
SAFETY SCIENCE, 2019, 115 :229-236
[4]  
Chen ZH, 1997, INT J ROCK MECH MIN, V34, P991, DOI 10.1016/S1365-1609(97)80008-1
[5]  
[窦林名 DOU Linming], 2005, [煤炭学报, Journal of China Coal Society], V30, P690
[6]   Monitoring, Warning, and Control of Rockburst in Deep Metal Mines [J].
Feng, Xia-Ting ;
Liu, Jianpo ;
Chen, Bingrui ;
Xiao, Yaxun ;
Feng, Guangliang ;
Zhang, Fengpeng .
ENGINEERING, 2017, 3 (04) :538-545
[7]  
[付玉凯 Fu Yukai], 2019, [煤炭学报, Journal of China Coal Society], V44, P2020
[8]  
[付玉凯 Fu Yukai], 2016, [煤炭学报, Journal of China Coal Society], V41, P1651
[9]  
Gao M.S, 2008, Rock and Soil Mechanics, V62, P533
[10]   A critical review on the developments of rock support systems in high stress ground conditions [J].
Ghorbani, Masoud ;
Shahriar, Korosh ;
Sharifzadeh, Mostafa ;
Masoudi, Reza .
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY, 2020, 30 (05) :555-572