Discrimination of Inrush Characteristics of Mine Roof Karst Fissure Make-up Water and Preventive Countermeasures for Mining
FENG Xin
XIANG Ande
ZHOU Yi
FU Qiming
Abstract：Water inrush occurred when water prospecting holes were drilled in east ginny cross-cut at+200 m level in Jin'echi Coal Mine, the water inflow rate quickly increased from the original 80 m3/h to 320 m3/h in a short period of time, with water quantity up to 200 m3/h and lasting for more than three months. In this paper, analysis and discrimination were made on the inrush characteristics of the roof karst fissure make-up water from the aspects of water quantity, water quality, the water-flowing and water-bearing structure of roof rock stratum, the make-up water source, the hydraulic connection, etc. and verification was carried out through geophysical prospecting and block up water grouting. Based on the verification results, the mine hydro-geological characteristics were further corrected, this thus provided scientific basis for the adjustment of the mine development layout and the prevention and control for mining.
Keywords：roof karstwater flowing fracturewater inrush characteristicsprevention and control for mining
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 76-78 )