Coalbed Methane Resources Evaluation Of Jing Lu Coalfield In ShouYang Of ShanXi

Aiming at Jinglu coal mine with the increase of mining depth,it’s gradually increased for seam content and gas gushing volume,there may be happened gas accident,in order to prevent gas to bring security hidden danger in the process of coal mining,it’s tried to carry out gas surface drainage and utilized(namely the development of coalbed methane resources)on Jinglu mine,however,it needs to evaluate geological,economic and technical,whether it is feasible to the development of coalbed methane resources in the Jinglu mine.This paper is a geological evaluation of coalbed methane resources by Jinglu mine commissioned the study,to determinate coal seam gas content through direct determination method and indirect determination method,to reach the relationship between CBM content and thickness by using the least square method.The study results that gas content and buried depth of coal seam is positively related to Jinglu coal seam.It’s concluded that the main geological factors of affecting the CBM occurrence for the theory analysis of the geological conditions in Jinglu coal mine according to the geological report of the Shouyang mining.It is divided to block segment to use of coal thickness isoline and content contours through the geological block method for the CBM resources of 12#and 15#coal seam,and it’s divided into several resources calculation block segment for the whole region of about 21km 2 area.It is concluded that there are 1.9×109 m3 resources in Jinglu coal mine by calculating area of each block,the average gas content,the coal seams accumulated thickness and the coal apparent density.It’s evaluated comprehensivly to use of the method of the composite metric(form),It’s concluded that there are abundant CBM reserves and shallow buried coal seam,etc,with characteristics of small and fat on Shouyang Jinglu coal mine through the comparison of various indicators.So it’s designated as the development areas of the more favorable.The study on evaluation shows that it is large for the CBM resources in the study block,but it’s between 0.35md and 5md for the permeability,the permeability coefficient is 0.1281m2·(MPa2·d)-1,the attenuation coefficient of the hole is 0.3209d-1,a low-permeability coal,it is adversity for the CBM development.There is a certain reference value of the research method for the CBM resource evaluation...