CAJ | 학술논문

超前判识煤层瓦斯富集区，可有效减少矿井煤层瓦斯分布不均所引发的安全问题。基于瓦斯地质理论和瓦斯赋存构造逐级控制理论，提出了瓦斯赋存指数μi以及基于构造形迹特征的煤层瓦斯富集区判识方法，判定μi≥20的点所构成的区域为瓦斯富集区。以龙煤集团双鸭山分公司集贤煤矿西二采区为例，结合该矿瓦斯地质特征，选取构造形迹的中心位置为基点，以距基点的距离li为自变量,瓦斯赋存指数μi为因变量，建立数学模型，对该矿西二采区瓦斯富集区进行了初步判识。判识结果表明，距岩墙距离li<65 m及距向斜轴距离li<220 m的点所构成的区域，煤层瓦斯赋存指数μi≥20，为瓦斯富集区。
초전판식매층와사부집구，가유효감소광정매층와사분포불균소인발적안전문제。기우와사지질이론화와사부존구조축급공제이론，제출료와사부존지수μi이급기우구조형적특정적매층와사부집구판식방법，판정μi≥20적점소구성적구역위와사부집구。이룡매집단쌍압산분공사집현매광서이채구위례，결합해광와사지질특정，선취구조형적적중심위치위기점，이거기점적거리li위자변량,와사부존지수μi위인변량，건립수학모형，대해광서이채구와사부집구진행료초보판식。판식결과표명，거암장거리li<65 m급거향사축거리li<220 m적점소구성적구역，매층와사부존지수μi≥20，위와사부집구。
In order to forecast gas enrichment area and effectively reduce safety problems induced by uneven gas distribution in coal mines, the paper, based on the gas geological theory, proposed the gas occurrence index and gas enrichment area identification methods according to structural features, decided the region that were composed of the points where gas occurrence index was more than 20 for gas enrichment area. This paper, taking Jixian coal mine as example and combining with gas geological characteristics in the mine, selected the center position of structural features as starting point, the length from the base as independent variable, gas occurrence index as the dependent variable for establishing mathematical model, identified the gas enrichment area in western No.2 mining district. The results show that the region constituted by the points away from magmatic rock wall less than 65 m or away from synclinal axis less than 220 m is gas enrichment area.