基于五图双系数法的带压煤层底板突水危险性评价
孙强¹，姜星^2*，陆宇³
（1.山东观和集团有限公司，山东 济南 250104；2.山东省煤田地质局物探测量队，山东 济南 250104；
3.山东省煤田地质局第五勘探队，山东 济南 250104）
摘要： 为了查明良庄煤矿15# 煤层带压开采底板突水危险性， 采用现场质询、资料收集、井下踏勘的方法， 逐一分析
了开采15^# 煤层的底板采动导水破坏带深度、底板保护层厚度、煤层底板以上水头及有效保护层厚度， 计算了底板带压
系数和突水系数。采用五图双系数法， 以突水系数为主、带压系数为辅， 对15# 煤层带压开采底板突水危险性进行了评
价， 并划分了三级评价区。研究结果表明： 大部分区域为带压开采安全性较高的Ⅲ级评价区； 50 号钻孔、713 号钻孔附
近为有发生直通式突水危险的Ⅰ级评价区； 其余区域为Ⅱ级评价区， 正常情况下发生底板突水的可能性较小， 但工作面
存在发生非直通式突水的可能性。未来开采15^# 煤层时， 应加强对构造的探查， 提前采取措施。
关键词： 五图双系数法； 带压开采； 底板突水危险性
中图分类号： TD745      文献标志码： A      文章编号： 2095-0802-(2023)11-0199-04
Risk Assessment of Water Inrush from Coal Seam Floor under Pressure Based on
Five-diagram Double-coefficient Method
SUN Qiang¹, JIANG Xing^2*, LU Yu³
(1. Shandong Guanhe Group Co., Ltd., Jinan 250104, Shandong, China; 2. Geophysical Survey Team of Shandong Coal
Geological Bureau, Jinan 250104, Shandong, China; 3. The Fifth Exploration Team of Shandong Coal Geological Bureau,
Jinan 250104, Shandong, China)
Abstract: In order to find out the risk of water inrush from floor in 15# coal seam under pressure mining in Liangzhuang Coal
Mine, the methods of on -the -spot inquiry, data collection and underground exploration were adopted, the depth of water -
conducting zone, the thickness of protective layer, the water head above the coal seam floor and the thickness of effective
protective layer in mining 15^# coal seam were analyzed one by one, and the coefficients of floor pressure and water inrush were
calculated. By using five-diagram double-coefficient method, taking the water inrush coefficient as the main and the pressure
coefficient as the auxiliary, the water inrush risk of floor in 15# coal seam under pressure mining was evaluated, and areas of
three-grade evaluation were divided. The results indicated that most of the areas were gradeⅢevaluation areas with high safety in
mining under pressure; gradeⅠevaluation areas with direct water inrush were near boreholes 50 and 713; GradeⅡevaluation areas
were in other areas, the possibility of floor water inrush of which is small under normal circumstances, but there was the
possibility of non-through water inrush in the working face. The exploration of structure should be strengthened and measures
should be taken in advance when mining 15^# coal seam in the future.
Key words: five-diagram double-coefficient method; mining under pressure; risk of floor water inrush