Calculation of Coal Seam Permeability and Gas Pressure Based on Borehole Gas Emission Law Back Analysis Model

摘要：

In view of the focal problem that it is difficult to direct measure the coal seam permeability and gas pressure in coal mine safety production, the back analysis model of coal seam permeability and gas pressure has been established which based on the theory of coal seam gas radial flow, the model has the advantage of no need the direct measure of gas pressure, just need borehole gas emission law can back analysis to ascertain the coal seam permeability and gas pressure, and carried out in practice in coal seam of E8-10 in Pingdingshan Coal Mine Group. Application results show that: the measured value of coal seam permeability and gas pressure has little impact on borehole diameter, but has significant impact on time effect. The data of the linear regression analysis of figure q-1 — Int which was chosen after S days can reduce errors. The back analysis model measurements of borehole gas emission law are accurate and reliable compared with the direct measured values, it provides a new way for measurement of coal seam permeability and gas pressure.

关键词： borehole gas emission law back analysis model coal seam permeability gas pressure

作者: XU Gang JI Chaohui DENG Xubiao

作者单位: 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

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 1565-1569

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）