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Lv Y.K.,China University of Mining and Technology | Jiang C.,China University of Mining and Technology | Jiang Y.D.,China University of Mining and Technology | Jiang Y.D.,State Key Laboratory of Coal Resources and Mine safety CUMTB
Advanced Materials Research | Year: 2014

Coal bumps happened many times in mining at No.5 seam of Tangshan coal mine. Strengthen the roadway's support of working face can effectively reduce disaster losses. With the research background of the 3654 working face, the mine pressure monitoring for the existing support form of roadway has been carried on. Perform a numerical simulation for the original roadway support, base on the in-situ stress and physical and mechanical characteristics of surrounding rock in experimental; study the impact of the stability of roadway's surrounding rock, while the space change of trellis and change of supporting intensity; optimizing the original support form, so as to maximum reducing the impact of the coal bumps. © (2014) Trans Tech Publications, Switzerland. Source


Jiang Y.D.,State Key Laboratory of Coal Resources and Mine safety CUMTB | Jiang Y.D.,China University of Mining and Technology | Lv Y.K.,China University of Mining and Technology | Zhao Y.X.,China University of Mining and Technology | Zhu L.L.,China University of Mining and Technology
Rock Stress and Earthquakes - Proceedings of the 5th International Symposium on In-Situ Rock Stress | Year: 2010

Jiulong mine is a typical inundation coal mine in China, in the working face several water inrush disasters has occurred during the process of deep mining so far. Working face water inrush disasters in Jiulong mine is taken as the research object, by means of the Hollow Inclusion, deep rock mechanics character measurement and on-site investigation, this paper has discussed the influencing factors of the stability of the floor in deep mining working face and come to the conclusion of distributed characteristics of stress field. Combined with numerical simulation, it inverses the distributed discipline of the stress field, studies the stability characteristics of the floor in the deep mining working face under the effect of in-situ stress, confined water, and mining disturbance. The research results show that the integral floor heave in the deep mining working face of Jiulong mine is due to the influence of multi-field coupling, which includes in-situ stress field, the pressure of confined water under strata, the mining disturbance stress, and so on. Among these, the tectonic stress field, the recovery method and the size of working face are key elements of floor heaving and breaking. By the appropriate selection of mining method and the size of working face, such water inrush disasters can be prevented effectively. And mining area in-situ measurement also plays an important role in the research of the working face floor water inrush mechanism. © 2010 Taylor & Francis Group, London. Source

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