Research on Hydraulic Fracturing Technology for Roof Stratigraphic Horizon in Coal Pillar Gob-Side Roadway

• Published in: Applied sciences Vol. 15; no. 9; p. 4759
• Main Authors: Sun, Tong, Li, Zhu, He, Qingyuan, Ma, Dan, Liu, Benben, Gao, Xuefeng
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.05.2025
• Subjects: Analysis; Coal industry; Coal mining; Coalbed methane; Crack initiation; Crack propagation; Experiments; hydraulic fracture re-orientation; Hydraulic fracturing; key strata weakening; Laboratories; Mechanical properties; Mineral industry; Mining industry; Oil wells; Onsite; Permeability; Propagation; roof relief; similar simulation; Simulation; Simulation methods

The return roadway in Limin Coal Mine experiences strong mine pressure during the mining work of the I030902 working face, which poses potential safety hazards to production and management. Therefore, hydraulic fracturing is used to relieve pressure on the free coal pillar roof. Hydraulic fracture s...