Temperature-suction force-infiltration-stress coupled multifunctional consolidation system and operating method thereof

Abstract

The invention discloses a temperature-suction force-infiltration-stress coupled multifunctional consolidation system and an operating method thereof. The system comprises a consolidation device (1), a data acquisition device (2), a pressure control device (3), a temperature controlling and monitoring device (4), a shearing wave sending and receiving device (5) and a computer (6) which are sequentially connected, wherein the computer (6) or control panels of all devices can be used for carrying out operation control on the system and recording test data in real time. According to the system and the operating method thereof, the structural design is reasonable, the operation is simple, the range of application is wide, the degree of automation is high, temperature, suction force, infiltration and stress random-coupled geotechnical engineering test research can be achieved, the accuracy of measurement results is higher, the working efficiency is higher, and the range of application is more extensive.

Description

technical field [0001] The invention relates to a temperature-suction-permeation-stress coupling multifunctional consolidation system and an operation method thereof, in particular to a multifunctional consolidation system capable of carrying out both saturated soil consolidation tests and unsaturated soil consolidation tests. Background technique [0002] In geotechnical engineering, the consolidation and settlement characteristics of rock and soil medium materials have an important impact on engineering properties. The consolidation and settlement characteristics are not only affected by the physical and mechanical properties of the medium itself, but also by the multi-field environmental conditions (Temperature, penetration, stress state, shear wave and chemical conditions, etc.). Under the coupling effect of multiple fields (temperature, permeability, stress state, shear wave and chemical conditions, etc.), the pore distribution, pore solution composition, pore pressure ...

AI Technical Summary

Problems solved by technology

Generally, the axial motor loading is easily affected by the nonlinearity of the soil, and it is difficult to apply a constant consolidation pressure, while the axial cylinder loading is affected by the air pressure provided, so high pressure cannot be applied, and the axial motor loading and the axial air pressure loading are both It involves problems such as the tightness of the loading piston and the friction between the sealing ring and the side wall, which is difficult to overcome. When the rebound test is performed, the friction is large, which affects the accuracy of the test control. The hydraulic loading is mainly carried out through the flexible rolling diaphragm. Due to the pressure of the liquid on the flexible rolling diaphragm, the flexible rolling diaphragm is prone to expansion and deformation, and the deformed flexible rolling diaphragm and the side wall of the pressure chamber are prone to generate greater friction, especially under high temperature conditions, the flexible rolling diaphragm is thermally expanded, The friction force will continue to increase, and various consolidation tests cannot be accurately performed, resulting in low accuracy of the test results

Moreover, the consolidation instrument, pressure plate instrument and hydraulic consolidation instrument cannot effectively carry out standard consolidation tests under multi-field coupling conditions, and cannot measure the physical and mechanical properties of soil under multi-field conditions. The work efficiency is low, and the cost of measurement high

Images