Abstract In the construction procedure of infrastructure, excavation disturbance significantly changes initial stress state rocks in deep geotechnical engineering, and a rock burst would occur accompanied by ejection block. present study, true triaxial unloading test its corresponding numerical analysis based on three-dimensional particle flow code (PFC3D) are conducted granite specimens to acq...

Geological disasters, especially landslides, frequently occur in Enshi County, Hubei Province, China. On 21 July 2020, a large-scale landslide occurred due to continuous rainfall. The mass blocked the Qingjiang River, formed dammed lake and caused great damage surrounding roads village buildings. In this study, geomechanical properties of were obtained through field surveys. A three-dimensional...

Because of complex mechanical properties and deformation mechanism, gravel soil mixture is an important medium concern in the field geotechnical engineering. Based on continuous-discontinuous coupling algorithm formed by structure shell elements particle discrete element method (PFC3D), soft servo loading sample realized, typical triaxial compression test data are used to calibrate mesoscale pa...

Coal mine backfilling can effectively prevent large-scale movement of rock formations, not only improving the overall production capacity but also protecting surface from destruction and maintaining original ecological environment. Backfilling extent backfills compactness are two factors determining supporting effect on overburdens in underground coal mines. To make full use aeolian sand as bac...

Under the Castor earthquake, there is a risk of liquefaction instability saturated tailings, and evolution dynamic pore pressure can indirectly reflect its process. Before applying loads, static stress state soil one main factors affecting development strength pressure, are significant differences in under different consolidation ratios. This paper conducted triaxial tests on tailings silt with...