赵坡煤矿四采区下山部分 12、 14层煤已回采结束 ,致使采空区内储存了大量的老空水 ,对下部 16、 17层煤的开采带来极大的威胁。为此 ,用特制的观测系统进行了现场实测和数值模拟试验 ,根据试验结果 ,同时引入点安全度的概念 ,研究了 16、 17层煤联合布置开采所造成的覆岩导水裂隙带 (特别是微小裂隙带 )发育高度和 12、 14两层煤联合开采对底板的采动破坏深度 ,分析了近距离老空水下 16、 17薄煤层联合开采的安全性 ,为赵坡煤矿及其他类似情况下的矿井的安全生产提供了科学依据。 The coal mining of the 12th and 14th floors in the coal mining area of ​​the fourth coal mining area of ​​Zhaopo Coal Mine has been completed and the large amount of old empty water is stored in the goaf, posing a great threat to the exploitation of the 16th and 17th layers of coal in the lower part. In order to do this, a field observation and numerical simulation test was conducted with a special observation system. Based on the test results, the concept of point safety was also introduced to study the water-bearing fractured zone of overlying strata caused by the combination of 16 and 17 coal layers Is a tiny fractured zone) development height and 12, 14 coal seam mining mining floor of the depth of the destruction of the analysis of the close-in old empty 16, 17 thin coal seam mining safety for the Zhao slope coal mines and other similar The case of mine safety production provides a scientific basis.