Soil pressure and pore water pressure monitoring device

Abstract

The invention discloses a soil pressure and pore water pressure monitoring device. The device comprises an annular box body, wherein a partition board is arranged in the middle of the box body to divide the box body into an upper cavity and a lower cavity; the periphery of a soil pressure bearing membrane is connected to the upper part of the box body, and an annular sealing ring is also arrangedat the connection part; soil pressure strain foil is connected to the lower surface of the soil pressure bearing membrane and located in the upper cavity of the box body; the periphery of the pore water pressure bearing membrane is connected to the lower part of the box body, and an annular sealing ring is also arranged at the connection part; pore water pressure strain foil is connected to the upper surface of the pore water pressure bearing membrane and located in the lower cavity of the box body; the lower surface of the pore water pressure bearing membrane is also covered with permeable stone, and the periphery of the permeable stone is also connected to the box body; the soil pressure strain foil and the pore water pressure strain foil are connected with wires respectively, and the wires are led out of the box body. Soil pressure monitoring and pore water pressure monitoring are integrated, and a simple and efficient monitoring device is provided for a test of a geotechnical centrifuge model.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering monitoring, in particular to an earth pressure and pore water pressure monitoring device. Background technique [0002] The geotechnical centrifuge model test is to use the same or similar materials as the prototype, make a model according to the 1 / n scale of the prototype, and place it in the ng artificial gravity field formed by the high-speed rotation of the geotechnical centrifuge for testing. The self-weight stress loss caused by scale reduction is compensated by the applied supergravity, thus ensuring that the model has the same stress state as the prototype, reflecting the deformation and failure process similar to the prototype. Therefore, the geotechnical centrifugal model test is an important research method to solve the problems in the field of geotechnical engineering. [0003] The geotechnical centrifugal model test has the characteristics of high speed, high stress ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a device for simultaneously monitoring earth pressure and pore water pressure in a geotechnical centrifuge, making full use of the space of existing monitoring sensors to ensure that the same number of sensors can obtain Twice the test data, providing strong data support for better analysis and solution of geotechnical engineering problems

Images