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Research Article
 

Study of Hydraulic Slotting Technology for Rapid Excavation of Coal Seams with Severe Coal and Gas Outburst Potentials



Yongjun Zhang, Guoying Wei, Zimin Zhang, Tianrang Jia and Dengfeng Yang
 
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ABSTRACT

For coal seams susceptible to serious coal and gas outburst, numerous problems and issues, such as the low excavation speed and serious security risks, exist during the process of outburst prevention. Through on-site examinations, this study analyzes the effect of hydraulic slotting measures on changes in the coal-bearing assemblages and gas status and reveals the involved mechanisms that hydraulic slotting measures are applied to deal with coal and gas outburst. This study further proposes the rapid excavation technology with supporting equipment designed and integrated and establishes a comprehensive security system with hydraulic slotting as the core of the entire system. Therefore, the goals of achieving hydraulic slotting operated unattended to avoid personnel injury, implementing coal and gas control technology are achieved. The results of on-site examination indicate that the excavation speed using the proposed method could be two times faster than the excavation speed when boring and drilling method is applied and thus the goal of safely and efficiently carrying out excavation work in coal seams with severe coal and gas outburst potentials is realized.

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  How to cite this article:

Yongjun Zhang, Guoying Wei, Zimin Zhang, Tianrang Jia and Dengfeng Yang, 2013. Study of Hydraulic Slotting Technology for Rapid Excavation of Coal Seams with Severe Coal and Gas Outburst Potentials. Journal of Applied Sciences, 13: 3483-3489.

DOI: 10.3923/jas.2013.3483.3489

URL: https://scialert.net/abstract/?doi=jas.2013.3483.3489
 

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