CAJ | 학술논문

随着开采深度的不断延伸，地应力在煤与瓦斯突出中的作用越来越显著。运用理论分析、数值模拟和现场调研的方法，探讨了现代构造应力场作用下断层走向对瓦斯突出的影响。结果表明，构造演化和断层走向与现代构造应力场最大主应力方向的关系控制着煤与瓦斯突出危险性。断层走向与最大主应力平行时，利于应力释放，煤层透气性较好，突出危险性小，但断层歼灭端特别是断层下歼灭端出现应力集中，瓦斯保存条件相对较好，需预防瓦斯事故；随着断层走向与主应力方向夹角的增大，挤压剪切应力集中范围随之增大，突出危险范围也随之增大；断层走向与最大主应力垂直时，挤压剪切应力大范围集中，煤层渗透性低，有利于形成大的瓦斯富集区，突出危险性最大。
수착개채심도적불단연신，지응력재매여와사돌출중적작용월래월현저。운용이론분석、수치모의화현장조연적방법，탐토료현대구조응력장작용하단층주향대와사돌출적영향。결과표명，구조연화화단층주향여현대구조응력장최대주응력방향적관계공제착매여와사돌출위험성。단층주향여최대주응력평행시，리우응력석방，매층투기성교호，돌출위험성소，단단층섬멸단특별시단층하섬멸단출현응력집중，와사보존조건상대교호，수예방와사사고；수착단층주향여주응력방향협각적증대，제압전절응력집중범위수지증대，돌출위험범위야수지증대；단층주향여최대주응력수직시，제압전절응력대범위집중，매층삼투성저，유리우형성대적와사부집구，돌출위험성최대。
Along with the increasing of mining depth, crustal stress is playing more and more impor-tant role in coal and gas outburst By using theoretical analysis, numerical simulation and field investiga-tion, the influence of fault strike on gas outburst under the modern tectonic stress field is discussed in this paper. The results show that the risk of coal and gas outburst is mainly controlled by the tectonic evolution and the relationship between fault strike and maximum principal stress direction in the mod-ern tectonic stress field. When the fault strike is parallel to the maximum principal stress, it contributes to stress relief featuring, better gas permeability of coal seam, and small risk of outburst. But at the end of fault, especially at the lower end of fault, stress concentration may occur and gas occurrence condi-tions are relatively good, it needs to to pay attention to gas accidents.Along with the increase of angle between fault strike and principal stress direction, the scope of extruding shear stress concentration in-creases, and outburst risk scope increases. When fault strike is vertical to maximum principal stress, the extruding shear stress concentrates in a large scope, the coal seam permeability is low, which contributes to the formation of large gas concentration zone, and the outburst risk is largest.