Practice of Comprehensive Geophysical Exploration Method in Detection of Water Richness in 13103 Working Face Floor
In order to grasp the risk of Ordovician ash water inrush in 13103 working face of Shaping Coal Industry Co.,Ltd.,comprehensive geophysical exploration and drilling methods were used to detect the floor water richness.The results show that the 5 abnormal areas found by radio tunnel perspective method coincide with the known faults and syncline structures in the excavation roadway of the working face;Both the audio frequency electropermeability method and the transient electromagnetic method detected the abnormal water-rich area of the working face floor.Combined with drilling exploration,3 overlapping abnormal water-rich areas were obtained.The overlapping areas of YC3,S1 and Y1 showed that the aquifer in the synclinal axis had high water-rich and recharge sources;the overlapping areas of YC4 and S2 had small water yield but still had recharge,and local water-rich areas had water damage risks;the overlapping areas of YCS and Y2 had no independent aquifer with hydraulic connection.The detection results can provide geological data support for the formulation of stoping plan of 13103 working face.
万方数据
维普
