Henan Provincial Key Laboratory of Gas Geology and Gas Control

Jiaozuo, China

Henan Provincial Key Laboratory of Gas Geology and Gas Control

Jiaozuo, China
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Gao Z.-Y.,Henan Provincial Key Laboratory of Gas Geology and Gas Control | Gao Z.-Y.,Henan Polytechnic University | Shan P.X.,Henan Provincial Key Laboratory of Gas Geology and Gas Control | Shan P.X.,Henan Polytechnic University
Electronic Journal of Geotechnical Engineering | Year: 2014

The miners working in underground excavation face of coal mine generally face with some adverse operating environments such as the high temperature and high humidity, which directly affect the physical and mental health of the miners, the labor productivity and safety production. In this paper, two fully mechanized excavation faces in No.1 Colliery of Pingdingshan Coal Group Company were selected as the study samples. Based on substantive tests on various physiological indicators of miners working in the high temperature environment, the laws of change of such physiological indicators, such as metabolism, body temperature, the amount of perspiration, blood pressure and heart rate, were systematically analyzed from the point of characterization of thermal comfort of miners. This study will provide a basis for the mine cooling design, and therefore eliminate the colliery thermal hazard, and protect miners' physical and mental health, and ensure the production safety in mines. © 2014 ejge.


Gao Z.-Y.,Henan Provincial Key Laboratory of Gas Geology and Gas Control | Gao Z.-Y.,Henan Polytechnic University | Sheng Y.D.,Henan Provincial Key Laboratory of Gas Geology and Gas Control | Sheng Y.D.,Henan Polytechnic University
Electronic Journal of Geotechnical Engineering | Year: 2014

Based on actual engineering background of coal mining in the short distance protective seam of Tian'an 5th Coalmine Team F of Pingdingshan Coal Group, a two-dimensional plane strain model is established by using the RFPA method. Meanwhile, the numerical simulation is applied to dynamically evolve the deformation, breakage and collapse processes of roof and floor layers during the protective seam mining as well as the variation laws of correspondent principal and shear stresses. It shows that the simulation results are relatively consistent with the actually-measured results. So, the study can provide theoretical references for more reasonable planning and design of the protective seam and for realization of safe and high-efficient coal-gas exploration. © 2014 ejge.

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