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Stiffness design theory for tunnel-support system Hot!
Experimental study on shear characteristics of bolted rock joints under constant normal stiffness boundary conditions Hot!
Shaking table test of dynamic responses of a layered complex rock slope under earthquake
Three-point-bending test of crack propagation and fracture parameters of coal specimens
Initiation pressure model for liquid CO2 fracturing through upward penetrating boreholes and its engineering verification
Study on shear mechanical properties of mudstone with weak intercalation
Simulation of rock failure by Voronoi-based discontinuous deformation analysis
Research on deformation characteristics and instability mechanisms of large monoclinal layered bedrock landslides:a case study of the Longjing landslide in Shizhu county,Chongqing
Shaking table test study on seismic optimization comparisons of multi-anchor piles for strengthening soil slopes under earthquake
Experimental study on size effect of compressive strength of jointed rock mass based on representative sampling
Influence of rainfall preponderance infiltration path on reactivation of ancient landslides
A prediction model of dynamic pore water pressure for MICP-treated calcareous sand
Experimental study on mechanical and deformation performances of geogrids- reinforced soil retaining walls under cyclic loading
Effect of the strength of rock blocks on the shear characteristics of soil-rock mixtures
Plastic deformation and critical dynamic stress of fine-grained soils under intermittent loading of trains
Analysis of unsaturated seepage siltation of groundwater source heat pump recharge
At present,analysis of recharge clogging focuses on saturated seepage,rather than unsaturated seepage which is discussed in this paper. In view of the difficult problem of water source heat pump pressure recharge in Wuhan area,using the unsaturated soil VG model and combined with relevant pumping recharge examples,the saturation of soils under different pressures is evaluated,and the change of the amount of pumped r is analyzed. It is pointed out that the pressure recharge will increase the involvement of gas phase factors and,to a certain extent,results in unsaturated seepage. Gas phase blockage maybe further causes unsaturated blockage. In addition,numerical simulation using FLAC3D is carried out,the pore pressure fields of pressure recharge and unsaturated seepage are compared. The change of the pore pressure field during the formation of unsaturated blockage is analyzed,and the area of unsaturated seepage around the back irrigation well is derived. Finally,different measures for the removal of siltation are proposed in the front and later stages,and new ideas are put forward for the study of segment blockage.
Performance analysis of a 30.2 m deep-large excavation in Hangzhou soft clay
Study on bolt grouting mechanism and control technology of broken surrounding rock in deep roadway