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为了研究井下水力强化瓦斯抽采地质评价方法,以中马村矿为例,在抽采地质单元划分的基础上,结合模糊数学理论建立了模糊数学水力强化瓦斯抽采地质评价体系和方法,对中马村矿的各个瓦斯抽采单元进行了分析与评价,得到各个抽采单元的评价系数,并指出顶板为泥岩、煤厚稳定、资源量丰富、构造条件简单,评价系数大于1.88的抽采地质单元适宜采取水力强化进行瓦斯抽采开发。并选择评价系数为2的Ⅰ_4-Ⅱ_2瓦斯抽采单元进行比对试验,强化后的抽采纯量比强化前提高了的7倍,结果表明,评价指导的抽采单元进行水力强化效果显著。
In order to study the geological evaluation method of gas hydraulically enhanced gas drainage in underground mine, taking Zhongmacun Mine as an example, based on the division of geological units, combined with fuzzy mathematics theory, a fuzzy mathematics hydropower intensified gas drainage geological evaluation system and method are established. The gas drainage units in Zhongmacun Mine were analyzed and evaluated, and the evaluation coefficients of each pumping unit were obtained. It was also pointed out that the roof was mudstone with stable coal thickness, abundant resources, simple construction conditions and extraction coefficient greater than 1.88 Geological units suitable for hydraulic stimulation to gas development. The comparison test of Ⅰ_4-Ⅱ 2 methane extraction unit with evaluation coefficient of 2 showed that the extracted pure quantity of reinforced concrete was increased by 7 times than that before strengthening. The results showed that the hydro-enhancing effect of pumping unit guided by evaluation was remarkable.