Technical study on the ground regional treatment of floor confined water in Xipang Well of Dongpang Mine
MA Hongfei
DI Junchen
WANG Guoniu
NIU Yanting
LI Shubin
Abstract：The original water inrush coefficient of the floor aquifer of the 9303 working face of Xipang well is 0.094～0.126 MPa/m.The high confined aquifer seriously threatens the safe production of the working face.The method of theoretical analysis is used to determine the design depth of reconstruc-tion section of floor confined water for ground regional treatment is 12.0～25.0 m.The thickness of the renovated waterproof layer is 51.0～64.0 m.The water inrush coefficient after renovation is 0.081～0.076 MPa/m.The treatment effect of floor confined water is evaluated through field measure-ment.The results show that the actual reconstruction depth of the floor confined water is 10.7～24.2 m.The actual thickness of the renovated waterproof layer is 50.8～64.3 m.The final pressure of the grouting section is above 6 MPa,and the pump volume reaches below 35 L/min at the end of grou-ting,which meets the grouting standard.The water inrush coefficient after treatment of floor aquifer is 0.073～0.085 MPa/m,less than 0.100 MPa/m,which meets the requirements of safe mining in working face.
Keywords：coal miningfloor confined waterground regional treatmentthickness of the renovated wa-terproofwater inrush coefficient
Publication Date：2024-12-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 42-48 )