Damage evolution of surrounding sandstone rock under charging–discharging cyclic loading in the natural gas storage of abandoned mines based on the discrete element method
Zhanguo Ma,
Junyu Sun,
Peng Gong
et al.
Abstract:Gas storage in abandoned mines is one way to reuse waste space resources. The surrounding rock of gas storage reservoirs in underground roadways undergoes damage and deformation under the cyclic loading of gas charging and discharging, which can pose a risk to the safety of the reservoirs. This study establishes a true triaxial numerical model of rock mass with the discrete element method (DEM) and explores the crack evolution of surrounding rock of underground gas storage during cyclic loading and unloading. … Show more
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