METHOD FOR DETERMINING HEIGHT OF CONFINED WATER RISING GUIDING ZONE UNDER TEMPERATURE-SEEPAGE-STRESS COUPLING ACTION

摘要

A method for determining height of a confined water rising guiding zone under a temperature-seepage-stress coupling action, comprising the steps of: comparing difference indexes of temperature fields in a complete rock stratum and the confined water rising guiding zone (A); determining an actual ground temperature gradient value (B); determining material parameters of coal and rock mass, the material parameters comprising permeability, porosity, density, strength, coefficients of thermal conductivity, and specific heat capacity; after modeling is carried out by using COMSOL software, carrying out numerical calculation to obtain a ground temperature gradient and ground temperature contour line result (C); determining a boundary between the confined water rising guiding zone and the complete rock stratum according to the ground temperature gradient and ground temperature contour line result (D); determining the boundary between the confined water rising guiding zone and the complete rock stratum according to hydrological drilling measurement data (E); and determining the height of the confined water rising guiding zone according to the position of the boundary (F). According to the method, the height of the confined water rising guiding zone is comprehensively determined, the calculation result is more accurate, actual operations are more convenient, and less construction operations are required.