Laboratory device and method for simulating cement sheath consolidation in frozen soil strata

A laboratory device for simulating a cement sheath consolidation in frozen soil strata, comprising:

• a main body, a pressure system and a measuring system;
• wherein
• the main body comprises fixing plates, detachable plates and a base plate;
• a circular hole is provided in a center of a base holder;
• a central column or a heat insulating casing is mounted on the base through the circular hole;
• a cavity for preparing a core and a cement sheath is formed by the fixing plates, the detachable plates, the base plate and the central column or the heat insulating casing;
• the detachable plate comprises limiting plates and pressure transmitting plates;
• the pressure system comprises an axial pressure pressurizing device and confining pressure pressurizing devices, the axial pressure pressurizing device is located above the cavity, and the confining pressure pressurizing devices are located outside the detachable plates;
• and
• the measuring system comprises acoustic wave transmitters, acoustic wave receivers, temperature sensors and strain gauges, the measuring system is connected to a controller;
• the acoustic wave transmitters are mounted on the fixing plates;
• the acoustic wave receivers and the strain gauges are mounted on the heat insulating casing;
• the temperature sensors are mounted on the base plate.