Study on the regularity of fault water inrush in Yuzhou mine area

摘要

Fault is one of the important reasons causing floor water invasion of coal seam.It shows that the water irruption quantity of fault is large,the water bursting source is the limestone water of the cambrian mainly,and the types of fault water inrush is diversity through the characteristic analysis of all previous fault water inrush in Yuzhou mine area.It also can be found that water inrush quantities of faults present positive correlation with the water inrush channel area of faults,the porosity of fault zones and the water pressure value of aquifer by the water inrush quantity calculated of main influence faults.The fault type,water inrush quantity,cutting the cambrain limestone aquifer or not and the water pressure value of aquifer are chosen as discrimination factors,through which the risk of fault water inrush can be divided into four kinds.With this method,four strips of main influence faults in Yuzhou mine area are classified,where the number of the first risk fault is four and other faults can be distinguished as the lower grades.