Water-inrush mechanism analysis and water disaster prevention for 3228 working face in Tianzhu Coal Mine
WANG Hua
Abstract：Three water—inrush incidents happened during mining the coal seam of 3228 working face in Tianzhu Coal Mine, the maximum outflow rate was 77.2m3/h, which seriously threatened the safety produc-tion of 3228 working face.On the basis of fully analyzing the geological and hydrogeological data of mine field and the working face, adopting "Up Three Zone"Theory of coal seam roof ( the caving zone, water flowing fractured zone and bending sinking zone) , principles of hydrogeology and theory of ground surface strata move-ment law, and combining the research results of ground fissure, the water source and mechanism of 3228 working face’ s water-inrush were analyzed.The results showed as follows:in mining the coal seam of 3228 working face, the water flowing fractured zone penetrated Yaojie Formation aquifer, Yaojie Formation aquifer was the main water source of 3228 working face’ s water-inrush;the surface crack could not connect the wa-ter flowing fractured zone, so the water of Jinsha River and Kushuixia Formation aquifer would not rush in the mined-out area of 3228 working face.The working face’ s water quality testing data proved the correctness of the above analysis.On this basis, the outflow rate of 3228 working face was calculated by open well calcula-tion method, the calculating result and the actual value were in general unanimous.And the appropriate meas-ures of water prevention and control was drawn up, it ensured the safety production of 3228 working face.
Keywords：water-inrush mechanismwater prevention and controlwater flowing fractured zoneground fis-sureoutflow rateopen well calculation method
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 1-7 )