E3S Web Conf.
Volume 292, 20212021 2nd International Conference on New Energy Technology and Industrial Development (NETID 2021)
|Number of page(s)||4|
|Section||Energy Storage Saving and New Energy Technology Development|
|Published online||09 September 2021|
Study on Gas Drainage Technology of Opening Closed Roadway
1 National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing 400037, China
2 Gas Research Institute, Chongqing Research Institute Co., Ltd., China Coal Technology Engineering Group, Chongqing 400037, China
* Corresponding author: email@example.com
In order to ensure the safe and rapid emission of high concentration gas when the mine opens the closed roadway, the gas emission method of the measure hole on the closed wall of the roadway and the extraction hole through the head of the roadway are studied. It solved the problems of difficult control of air volume, long gas emission time, easy overrun of return air flow gas concentration and large influence range in closed roadway gas emission. The practical results show that after the closed wall of -580 m track stone gate roadway is opened, the gas concentration in the airflow is 0.18 %, and the gas emission time is 2 min, which greatly shortens the gas emission time. There is no abnormal phenomenon in the segmented gas emission, and the safe gas emission is realized.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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