Inicio  /  Applied Sciences  /  Vol: 13 Par: 10 (2023)  /  Artículo
ARTÍCULO
TITULO

Mechanism and Empirical Study of Rockburst in the Adjacent Area of a Fully Mechanized Top-Coal Caving Face Based on Microseismic Technology

Quanjie Zhu    
Longkun Sui    
Yongming Yin    
Jinhai Liu    
Zhenhua Ouyang and Dacang Wang    

Resumen

Monitoring and providing warnings for coal mine rockburst disasters is a worldwide problem. Several rockburst accidents have occurred in a 1301 belt transport chute near a 1300 fully mechanized caving mine face. To address this issue, an empirical study of the occurrence mechanism of rockbursts in the adjacent area of the fully mechanized top-coal caving face was carried out. This paper mainly addresses the following issues: (1) based on microseismic monitoring technology, the distribution characteristics of the host-rock-supported pressure of the 1300 working face were measured, and the evolution and distribution of the deep-well caving working face host-rock-supported pressure were analyzed. It is revealed that the occurrence mechanism of rockburst in the adjacent area is actually caused by the evolution and superposition of the lateral abutment pressure of the 1300 stope, and the stress of the original rock along the 1301 belt transport down chute; (2) a theoretical calculation model of dynamic and static abutment pressure in longwall stope is built, and an example is tested. The results show that the peak position of lateral abutment pressure of the coal body outside the 1300 goaf is around 63 m, and the peak value of abutment pressure is around 47 MPa; (3) coal body stress monitoring, bolt dynamometer detection, and other means are compared and analyzed. At the same time, with the help of CT geophysical prospecting and drilling cutting measurements, it is concluded that the 1301 belt transport down chute is in the bearing pressure influence zone (superimposed zone), which further verifies the validity of microseismic analysis results and the accuracy of the above theoretical model. Based on this, the early warning system and prevention measures for rockburst based on microseismic monitoring are proposed. The engineering practice shows that the dynamic and static bearing pressure distribution and evolution law of the working face can be dynamically obtained by using microseismic technology, which provides a basis for the accurate prediction and treatment of rockbursts.

 Artículos similares

       
 
Wei Yan, Panfeng Chai and Changbiao Zhong    
This study delves into the significance of integrating small-scale aquaculturists. Through a unique linkage mechanism established between aquaculture cooperative societies and these small-scale practitioners, characterized by mutual risk-bearing and bene... ver más
Revista: Water

 
Aftab Ur Rahman, Guangcheng Zhang, Salman A. AlQahtani, Hammad Tariq Janjuhah, Irshad Hussain, Habib Ur Rehman and Liaqat Ali Shah    
The purpose of this study is to identify the leading causes of slope instability along a local highway in Anhui, People?s Republic of China. As part of the east expansion project, the mountain range will be excavated to create a two-way, nearly 30 m wide... ver más
Revista: Water

 
Yunzhi Ling, Xiaozhao Li, Xiaosong Zhang, Zhan Liu and Peng Zhao    
An oscillating heat pipe (OHP) is an effective heat transfer device for the thermal management of electronic devices. However, the heat transfer mechanism of the OHP was not fully understood due to its complicated operation characteristics. In this paper... ver más
Revista: Applied Sciences

 
Yong Tu, Yanwei Zhao, Lingsheng Meng, Wei Tang, Wentao Xu, Jiyang Tian, Guomin Lyu and Nan Qiao    
Flash floods are ferocious and destructive, making their forecasting and early warning difficult and easily causing casualties. In order to improve the accuracy of early warning, a dynamic early warning index system was established based on the distribut... ver más
Revista: Water

 
Giuseppe Pezzinga    
Water hammer flow is examined, putting into evidence that unsteady friction cannot be fully responsible for observed oscillation damping. The measured piezometric head oscillations of water hammer flow experimental tests carried out for very long time (a... ver más
Revista: Water