Abstract: To address the maintenance challenges of fractured surrounding rock in main roadways subjected to dynamic pressure from multi-layered thick-hard roofs, a mechanical model was developed to describe load transfer in multi-layered hard roof strata.The stress increment formula was derived to quantify the transmission of stress from medium and high-level key strata groups to the front coal pillars in the working face.The pressure relief mechanism of the regional fracturing technology was clarified.Numerical simulations confirmed that regional fracturing can rdhuce the energy accumulation of the roof.Taking the 3206 working face of Wangpo Coal Industry as an example, the echnical parameters for regional fracturing at the mining end line were determined and the field tests were carried out.The results show that regional fracturing reduces the exposed length of articulated blocks in key strata, and increases the dip fracture angle (β₂), and shortens the horizontal fracture length (l_i) of key strata groups.These changes shift stress peaks toward the goaf area, effectively reducing compressive stress of the surrounding rock in the main roadway.The displacement of the surrounding rock in the 3206 working face kept within allowable limits and the maximum reduction in supporting stress is approximately 1 MPa.