Sealing technology of coal bed deep-hole cumulative blasting

GUO De-yong; YANG Xiong; DAN Zhi-yong; Lü Peng-fei

doi:10.13374/j.issn1001-053x.2011.07.007

Volume 33 Issue 7

Jul. 2021

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GUO De-yong, YANG Xiong, DAN Zhi-yong, Lü Peng-fei. Sealing technology of coal bed deep-hole cumulative blasting[J]. Chinese Journal of Engineering, 2011, 33(7): 785-789. doi: 10.13374/j.issn1001-053x.2011.07.007

Citation:

GUO De-yong, YANG Xiong, DAN Zhi-yong, Lü Peng-fei. Sealing technology of coal bed deep-hole cumulative blasting[J]. Chinese Journal of Engineering, 2011, 33(7): 785-789. doi: 10.13374/j.issn1001-053x.2011.07.007

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Sealing technology of coal bed deep-hole cumulative blasting

doi: 10.13374/j.issn1001-053x.2011.07.007

1. School of Resource and Safety Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China;
2. Jiaozuo Coal Industrial(Group) Co. Ltd., Jiaozuo 454002, China

Received Date: 2010-07-11
Available Online: 2021-07-30

Abstract

Abstract

The construction technology of cumulative blasting and the mechanical behavior of sealing materials were analyzed for the gas drainage sealing technology of coal bed deep-hole cumulative blasting.It is shown that blast hole diameter and sealing material properties are the main factors which influence sealing length.After comprehensive analysis of blasting safety,drainage technology and constructional conditions,the reasonable sealing length of cumulative blasting is considered to be in the range of 7.5 to 10.0m.Finally,the feasibility of coal bed deep-hole cumulative blasting sealing technology was tested with the 14121 and 24021 working faces in Jiulishan Coal Mine of Jiaozuo Coal Group as an example.
- coal mining,
- blasting,
- sealing technology,
- gas hazards