Evaluation on High Pressurized Water Inrush Occurred from Floor of Coal Mining Face in Zhaogu No.1 Mine
Abstract：Based on the features of the deep depth seam,high water pressure,thin water isolated layer in floor and others in Zhaogu No.1 Mine,in order to maximally recover the coal resources and to realize a safety and high efficient production,the DC electric method site measurement,the similar simulation experiment,the finite difference numerical calculations,the discrete element numerical method and other means were applied to predict the floor failure depth in No.11011 coal mining face in No.Two1 seam of Zhaogu No.1 Mine.With the analysis on the floor water isolation and evaluation on the water inrush,a completed set technology system suitable to study the floor water prevention and control for the coal mining face was established.The analysis showed that the water inrush danger of No.8 limestone under the floor of the No.11011 coal mining face would be high and the water inrush possibility of the No.2 limestone,No.3 limestone and Ordovician limestone under the floor would be small.
Keywords：high water pressureevaluation on water inrush from floornumerical methodsite observation
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)