CAJ | 학술논문

针对中国煤矿多分布于7度及7度以上的地震烈度区，煤矿大规模开采，在矿区地层中留下了大面积、立体分布的空间，一些开采位于工业区或居住区的下部等问题，采用 FLAC3D 软件，建立了不同条件下的数值模型，对下伏采空区的煤矿地表地震响应进行分析。模拟结果显示：在剪切地震波的作用下，下伏采空区煤矿地表的最大水平加速度受到地下采空区的影响。讨论了在采深及采空区填充参数不同的情况下，地表监测位置的响应值变化。
침대중국매광다분포우7도급7도이상적지진열도구，매광대규모개채，재광구지층중류하료대면적、입체분포적공간，일사개채위우공업구혹거주구적하부등문제，채용 FLAC3D 연건，건립료불동조건하적수치모형，대하복채공구적매광지표지진향응진행분석。모의결과현시：재전절지진파적작용하，하복채공구매광지표적최대수평가속도수도지하채공구적영향。토론료재채심급채공구전충삼수불동적정황하，지표감측위치적향응치변화。
Chinese coal mines are mostly located in the region with seismic intensity of 7 or higher. The vast tridimensional mined-out spaces formed in the strata of mine goaf have been increasing due to large-scale coal mining exploitation. Especially some underground mines are located in the industrial and residential areas. The study analyzed the seismic response at the ground surface transferred from the mine goaf by using FLAC3D numerical models for various conditions. The results show that the peak values of the ground surface wave (PGA) for an earthquake SH wave are affected by existing underground spaces of the goaf. These effects have been analyzed and evaluated at monitoring positions on the ground surface with different depth and filling conditions of the goaf.