CAJ | 학술논문

急倾斜多煤层开采覆岩破坏和地表移动规律不同于缓倾斜煤层开采。采用相似材料模型实验对赵各庄矿急倾斜多煤层开采进行了模拟研究。通过对7次观测数据分析，得出了不同开采阶段地表移动变形规律及岩层破坏特征。实验结果表明：地表下沉盆地具有分区沉降突变性和沉陷分布格局控制性特点，岩层的空间破坏范围随着煤层开采层数的增加和开采深度的加大而扩大，其破坏特征主要表现为累积性和突变性。
급경사다매층개채복암파배화지표이동규률불동우완경사매층개채。채용상사재료모형실험대조각장광급경사다매층개채진행료모의연구。통과대7차관측수거분석，득출료불동개채계단지표이동변형규률급암층파배특정。실험결과표명：지표하침분지구유분구침강돌변성화침함분포격국공제성특점，암층적공간파배범위수착매층개채층수적증가화개채심도적가대이확대，기파배특정주요표현위루적성화돌변성。
The overburden failure and surface movement law during mining of the steeply inclined multiple coal seams are different from the gently inclined one. With the similar material simulation,the mining process of steep inclined multiple coal seams in Zhaogezhuang mine is simulated. Through analyzing 7 groups of observed data,the surface movement deformation law and overburden failure at different mining stages were obtained. The simulation results show that the surface subsidence ba-sin has the features of paroxysmal partition subsidence and controlled subsidence distribution pattern. With the increase of the numbers of coal seam mining layer and the expansion of mining depth,the space of rock strata failure is enlarged. The main performance of rock failure is cumulative and paroxysmal.