Abstract:At present, there is no pertinence in the law of dust migration in the tunnel construction by mining method, although there are abundant researches. This paper studies the Qintai Tiantaishan tunnel through field measurement and numerical simulation, and analyzes the dust migration law under the conditions of drilling, mucking and guniting for the working area. The results show that: (1) Under all working conditions, the dust concentration tends to decrease in the area along tunnel face. And the higher the dust… Show more
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