CAJ | 학술논문

在深部开采或复杂地质条件下，地应力对煤岩渗透率的影响明显，进而影响煤矿瓦斯抽采的效果。对四川矿区不同典型煤层条件下的原煤进行了实验研究，分析矿区典型地应力特征条件下煤岩渗透率的变化规律，拟合了煤岩渗透率与有效应力的函数关系模型。研究发现：煤岩的渗透率与有效应力呈规律性的反比例关系，并存在拐点。这一发现为该矿区根据地应力条件进行煤层强化增透措施选取提供了依据，该研究成果在四川矿区白皎煤矿的保护层开采应用中取得了较好的效果，瓦斯抽采效果良好。
재심부개채혹복잡지질조건하，지응력대매암삼투솔적영향명현，진이영향매광와사추채적효과。대사천광구불동전형매층조건하적원매진행료실험연구，분석광구전형지응력특정조건하매암삼투솔적변화규률，의합료매암삼투솔여유효응력적함수관계모형。연구발현：매암적삼투솔여유효응력정규률성적반비례관계，병존재괴점。저일발현위해광구근거지응력조건진행매층강화증투조시선취제공료의거，해연구성과재사천광구백교매광적보호층개채응용중취득료교호적효과，와사추채효과량호。
Under the deep mining and complicated geological conditions, the strata stress has significant influence on the coal permeability, thereby affecting the gas drainage effect. In this paper, experimental study was made on the raw coal taking from different typical coal seams in Sichuan mining areas, analysis was carried out on the change regularity of coal permeability under the condition of the typical strata stress characteristics and the functional correlation model of the coal permeability and effective strata stress was fitted. It was found out in the study that the coal-rock permeability presented a regular inverse proportion with the effective stress and there was an inflection point. This discovery provided basis for the selection of permeability enhancement measures of coal seams according to strata stress conditions. This research result has obtained better application effect in protective layer mining in Sichuan Baijiao Coal Mine and the gas drainage effect is also good.