1979年《矿山测量》第三期,概略地介绍了阳泉二矿进行巷道下采煤的试验情况。现将试采后采区上方巷道的变形情况简介如下: 12号煤层工作面地质构造比较简单,倾角3°～4°,工作面中部有走向北东、倾向南东,落差为1.0米和1.3米的正断层各一条。平均煤层厚度1.4米,采高1.3～1.9米。直接顶为厚4.3米的页岩。老顶为细砂岩和砂质页岩。工作面走向长270米,倾斜长70～220米。用走向长壁冒顶法开采。煤层开采后,距工作面上方垂直距离 The third phase of “Survey of Mines” in 1979 introduced briefly the test of coal mining under roadway in Yangquan No.2 Mine. Now after the trial mining mining area above the deformation of the roadway profiles are as follows: 12 coal seam face geological structure is relatively simple, dip angle of 3 ° ~ 4 °, the work surface to the north east, south east, drop of 1.0 meters and 1.3 The normal fault of a meter. The average coal seam thickness of 1.4 meters, mining height 1.3 ~ 1.9 meters. Directly top 4.3 meters thick shale. The old roof is fine sandstone and sandy shale. Face to 270 meters long, inclined 70 to 220 meters long. Going to the longwall roof mining method. After the mining, vertical distance from the face above