Recently, the “Key Technology Research for New Type Mine Explosion-Proof Portal†jointly completed by China Coal Science and Engineering Corporation's Coal Research Institute and Shanxi Chuangqi Industrial Co., Ltd. has passed the expert appraisal organized by the China Coal Industry Association. The project was launched in June 2010. After a lot of laboratory analysis, calculations and pipeline simulation experiments, 1:1 roadway prototype industrial testing, the research results have reached the international advanced level. The expert group proposed to promote the application of this technology as soon as possible to provide services for the safe production of coal mines in China.
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