TY - JOUR
TI - Dewatering stress adjustment and effect on mining pressure in deep sandstone roof
AU - You Shuang
AU - Geng Qian-Cheng
AU - Ji Hong-Guang
AU - Zhao Long-Long
JN - Thermal Science
PY - 2025
VL - 29
IS - 2
SP - 1137
EP - 1143
PT - Article
AB - To explore the coupling relationship between stress field adjustment and  mining pressure in the sandstone roof at great depth under dewatering  conditions, a mechanical linkage mathematical model based on elastic theory  was constructed to estimate the stress adjustment in the dewatering area and  its interaction with mining pressure. Additionally, the Sobol global  sensitivity analysis method was introduced to evaluate the importance and  interaction of various factors affecting the stress adjustment in the roof  area. The study found that the main factors influencing the vertical stress  at point M, in order of significance, are the horizontal distance from point  M to the dewatering outlet, the pressure head of the aquifer at the  dewatering outlet, the permeability coefficient of the dewatering stratum,  and the influence coefficient of dewatering; among these, a significant  interaction exists between the horizontal distance from point M to the  dewatering outlet and the pressure head of the aquifer at the dewatering  outlet, while interactions among other parameters are less significant or  negligible.