CAJ | 학술논문

为深入研究深部近距离煤层上行开采过程中岩层应力分布、断裂破坏及下沉变形特征，根据深部煤层开采的具体工程地质条件，建立了深部近距离煤层上行开采相似材料试验模型，对上行开采中围岩应力变化、覆岩运动及裂隙演化过程进行了模拟分析。获得了下煤层和上煤层开采过程中，围岩应力分布变化特点及分区特征、岩层裂隙富集区主要分布区域及其演化规律，煤层开采过程中切眼和煤壁附近岩层断裂角的变化特征，并得到了两煤层工作面相对位置不同情况下，岩层裂隙富集区演化特点、断裂角变化及下沉变形规律。研究成果为类似条件下煤层上行开采、瓦斯抽采提供参考。
위심입연구심부근거리매층상행개채과정중암층응력분포、단렬파배급하침변형특정，근거심부매층개채적구체공정지질조건，건립료심부근거리매층상행개채상사재료시험모형，대상행개채중위암응력변화、복암운동급렬극연화과정진행료모의분석。획득료하매층화상매층개채과정중，위암응력분포변화특점급분구특정、암층렬극부집구주요분포구역급기연화규률，매층개채과정중절안화매벽부근암층단렬각적변화특정，병득도료량매층공작면상대위치불동정황하，암층렬극부집구연화특점、단렬각변화급하침변형규률。연구성과위유사조건하매층상행개채、와사추채제공삼고。
In order to research the rock stress distribution , fracture failure and settlement deformation characteris-tics during ascending mining in deep closer coal seam , according to the special engineering geologic conditions of deep coal seam mining , a similar material test model of deep closer coal seam by using ascending mining method was designed .The processes of surrounding rock stress variation , over-lying strata movement and crack evolution were analyzed .The characteristics of rock stress distribution variation and area division , the main distribution area and evolution rules of rock fissure cluster area , and the variation characteristics of cutting hole and rock breaking angle near to the coal wall during the lower and upper coal seam mining processes were obtained .Then the evolu-tion characteristics of rock fissure cluster area and the rules of breaking angle variation and settlement deformation under the con-dition of different mining distances in two coal seams were acquired .It can provide the references for the ascending mining and gas drainage in the similar coal seam .