The Research on Strength and Deformation Behaviors of Buffer/Backfill Material under High-Temperature and High-Pressure Conditions

Figure 1

The sketch map of the high-temperature and high-pressure triaxial apparatus developed by Institute of Logistics Engineering. (a) The sketch map of the bench and pressure chamber. (b) The overall schematic diagram of the experimental system. 1: bench; 2: loading piston; 3: pressure sensor; 4: displacement sensor; 5: water chamber; 6: piston rod; 7: pressure chamber; 8: sample cap; 9: porous stainless steel plate; 10: latex film; 11: sample; 12: porous stainless steel plate; 13: pressure chamber pedestal; 14: circulation line of suction control gas I; 15: circulation line of suction control gas II; 16: confining pressure pipeline; 17: water pipeline of the loading piston; 18: gas pipeline of the loading piston; 19: constant temperature box; 20: salt solution jar; 21: peristaltic pump; 22: GDS pressure-volume controller; 23: control cabinet of gas pressure; 24: stepper motor; 25: data acquisition line; 26: acquisition and control system.