Abstract：In order to overcome the limitations of a single geophysical method, and to predict the risk of Ordovician water inrush more accurately, 4 geophysical exploration means (transient electromagnetic method (TEM) , DC method, in-seam seismic survey (ISS) and electric-magnetic pit-conveying) were used in 13151 working face in a Xin'an coal mine.Geophysical exploration results show that the Ordovician limestone water rose up in a low resistivity zone with shortage effective thickness of aquiclude; that the thin seam area could be affected by a shear sliding structure; that the ground stress (mine pressure) concentrated in a high wave velocity area (more than 2300 m/s) in which the surrounding rock was easily destructed.The overlapping region of an abnormal area has a high risk for water inrush, where is the key of water controlling in a mining face.

Keyword：comprehensive geophysical exploration;transient electromagnetic;in-seam seismic;DC method;electric-magnetic pit-conveying;water inrush warning;