Anti-analysis Model to Ascertain Coal Seam Permeability and Gas Pressure Based on Borehole Gas Emission Law
Being difficult to measure coal seam permeability and gas pressure directly in coal mine safety production, the anti-analysis model of coal seam permeability and gas pressure has been established based on the theory of coal seam gas radial flow. This model has the following advantages. It doesnt need measure gas pressure directly; the coal seam permeability and gas pressure can be determined by borehole gas emission law. The model has been applied to practice in E_(810) coal seam of Ping dingshan Coal Mine Group. Application results show that the calculation results are not related to borehole diameter, but it has been affected by time effect greatly. It can reduce errors when the data were chosen after 5 days in the linear regression analysis figure. The results are accurate and reliable compared with the direct measurement. The model has provided a new method for measuring of coal seam permeability and gas pressure.
Borehole gas emission law Anti-analysis model Coal seam permeability Gas pressure
XU Gang JI Chaohui ENG Xubiao
State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (B Chongqing Branch, China Coal Research Institute, Chongqing 400037, China
国际会议
2010 International Conference on Mine Hazards Prevention and Control(第二届矿山灾害预防与控制国际学术会议 ICMHPC)
青岛
英文
231-237
2010-10-15（万方平台首次上网日期，不代表论文的发表时间）