基于模糊数学的山西省典型煤矿区煤层气可采性评价

Recoverability Evaluation of Coalbed Methane in Typical Coal Mining Areas of Shanxi Province Based on Fuzzy Mathematics

为评价山西省煤矿区煤层气资源的开发潜力,采用模糊数学评价方法对典型煤矿区煤层气资源的可采性进行了评价。将评价标准的资源量参数和可采性参数根据重要性不同分配不同的权重,形成了资源量评价矩阵和可采性评价矩阵,进而计算得出各矿区的模糊评价系数。该系数越大,则煤层气的可采性越高,反之,可采性越低。模糊数学评价结果表明,离柳矿区的评价系数最高,为1.06,最有开采价值;阳泉和西山矿区的评价系数都较低,仅0.56和0.58,难以进行大规模开采,在进行阳泉和西山2个矿区的煤层气地面开发时,应进一步研究以优选井位和适配技术。

In order to evaluate the development potential of coalbed methane resources in coal mining areas of Shanxi province,the recoverability of coalbed methane resources in typical coal mining areas is evaluated by using fuzzy mathematics evaluation method.The resource parameters and recoverability parameters of the evaluation standard are assigned different weights according to different importance to form the resource evaluation matrix and recoverability evaluation matrix,and then the fuzzy evaluation coefficient of each mining area is calculated.The greater the coefficient,the higher the recoverability of coalbed methane,on the contrary,the lower the recoverability.The results of fuzzy mathematics evaluation show that the evaluation coefficient of Liliu mining area is the highest,which is 1.06,which is the most valuable mining area;the evaluation coefficients of Yangquan and Xishan mining areas are low,only0.56 and 0.58,so it is difficult to carry out large-scale mining.During the ground development of coalbed methane in Yangquan and Xishan mining areas,further research should be carried out to optimize the well location and adaptation technology.