CAJ | 학술논문

通过分析开采条件下工作面前方支承压力分布规律和煤体卸压破坏全过程的采动力学行为，采用实验室实验研究了工作面前方承载应力环境下岩体渗透性的变化；揭示了采动影响下采场空间裂隙发育与演化规律，提出工作面前方裂隙发育区形成的主要原因是强度破坏，并分为原岩裂隙区、应力集中裂隙孕育区、卸压剪切裂隙发育区，渗透性较强的区域为卸压剪切裂隙发育区，与塑性区近似重合。
통과분석개채조건하공작면전방지승압력분포규률화매체사압파배전과정적채동역학행위，채용실험실실험연구료공작면전방승재응력배경하암체삼투성적변화；게시료채동영향하채장공간렬극발육여연화규률，제출공작면전방렬극발육구형성적주요원인시강도파배，병분위원암렬극구、응력집중렬극잉육구、사압전절렬극발육구，삼투성교강적구역위사압전절렬극발육구，여소성구근사중합。
With the analysis of front abutment pressure distribution and mining-induced mechanical behavior of surrounding rock under the condition of relief failure, rock permeability changes in the front bearing stress environment are studied in the method of laboratory testing. Fracture development and evolution law of overlying strata under mining condition is revealed. The paper points out that the main cause of fracture development in front of the work face is strength failure, and the zone is divided into three parts: the original rock fissure zone, the stress concentration and fracture inoculation zone, the pressure relief and shear fracture development zone. The zone which has a better permeability accords with the plastic zone.