Study on the Support Effect of Energy-Absorbing Support Structure in the Coal Mine Roadway and the Synergic Effect with Wall Rock

Abstract

This paper examines the effectiveness of energy absorption anti-impact support in protecting the coal mine roadway from rock burst and ensuring safe production. By establishing an ABAQUS numerical model of the support and wall rock, the mechanical behavior of the system under static and impact loads have been investigated. The analysis includes the deformation of the wall rock, plastic strain, plastic property, and damage range to evaluate the support effect and the synergistic effect with the wall rock. The findings indicate that compared to ordinary support, the energy absorption anti-impact support exhibits a 20.40% increase in maximum deformation, 4.74% increase in maximum stress, 66.67% decrease in maximum plastic strain, and 116.79% increase in maximum absorption energy. The wall rock also experiences a 2.91% increase in maximum deformation and 10.19% increase in maximum stress. These results suggest that energy absorption anti-impact support is effective in improving the anti-impact performance of the support and providing a certain level of protection to both the support and wall rock.

Research on the Laws of Overlying Rock Fracture and Energy Release under Different Mining Speeds

“…As deep resource extraction progressively expands, mines are being developed at increasingly greater depths, resulting in heightened stress effects that contribute to a rising accident rate of impact damage between working faces and tunnels [1][2][3]. In response to the growing frequency of these disasters and accidents, numerous scholars have suggested a variety of preventive strategies, such as zonal impact prevention support design [4], risk quantification assessments for mining schemes [5], the development of mine rock burst systems [6], and the creation of specific energy-absorbing and anti-erosion structures for tunnels [7,8]. However, challenges such as the high cost of support materials, the low accuracy of monitoring and early warning systems, and the intense workload for workers still persist [9].…”