Multifield Coupling Evolution Characteristics and Water Storage Stability Analysis of Steep Coal Seam Roadway Based on Similar Physical Simulation Tests

Abstract

In order to verify the feasibility of roadway water storage under the condition of steep coal seam in the Xinjiang mining area, the stability test of roadway water storage was carried out based on a similar physical simulation test method, and the characteristics of stress concentration, deformation, and water storage were analyzed. The study reveals the multifield coupling evolution process of water storage roadway under the action of mining disturbance of steep coal seam. The research results show that the failure of the water storage roadway is mainly concentrated at the intersection of the end angle of the roadway and the joint interface. Affected by the special coal seam structure, the mining in the upper and lower sections affects the left and right water storage roadways, respectively. The water storage time of the right and left roadways is 2.4 and 9.5 years, respectively, and the roadway excavation should avoid contact with the nodal surface of the coal-rock interface to reduce the seepage channel formed at the weak position and better ensure the growth and stability of the water storage time. The research can provide theoretical support for the construction of a coal mine underground reservoir and support the popularization and application of this technology.