Mining-induced disturbance and simulation of the in-situ stress field in the stratum space - National Natural Science Foundation of China (50074029 50574064)

Author: Liu Changwu
Publisher:
Publish Date: 2005-12-01
Features: This book systematically discusses the evolution and variation patterns of the in-situ stress field induced by the main processes of tunneling and working face recovery in underground mining engineering. It focuses on the principle of optical waveguide stress-strain measurement and the Bragg fiber optic grating stress-strain measurement system based on wavelength division multiplexing (WDM) and spatial division multiplexing (SDM) technologies. It provides a detailed analysis of the new distribution patterns of the stress field induced by the excavation of close-proximity tunnel groups and the recovery of shortwall systems. Additionally, it investigates the relationship between the evolution and variation of the in-situ stress field caused by mining engineering and the shape and size of underground structures, as well as the physical and mechanical parameters of the coal and rock mass. Meanwhile, combining the practical needs of coal mine safety production and field measurement work, the theoretical and laboratory research findings have been validated and applied in the Datun mining area.