Pore water pressure measuring device in foundation stabilization zone

Abstract

The invention relates to a foundation under embankment inner pore water pressure measurement device which consists of a pore water pressure sensor, a sensor cable, a secondary instrument and a data automatic collection system; before soil reinforcement, the pore water pressure sensor is embedded through a method which conforms to relevant technical specifications, codes and design requirements, the sensor cable is led outside the foundation under embankment to protect the joint with the secondary instrument, and then the soil is reinforced through a preset reinforcing method; during the reinforcement process, the data automatic collection system connected with the secondary instrument can be adopted to sense the pressure of the pore water pressure sensor according to a certain frequency, so as to measure the internal pore water pressure of the soil in real time in different phases and different pressure ranges.

Description

Technical field [0001] The invention relates to a pore water pressure measuring device in a foundation reinforcement area in foundation engineering. In particular, it relates to the measurement of pore water pressure under conditions of vacuum preloading, combined stacking and vacuum preloading, and vacuum precipitation plus vibration method for foundation treatment and reinforcement. The range of pore water pressure varies from positive pressure to negative pressure. Background technique [0002] The change of pore water pressure is one of the important parameters that need to be measured in the foundation treatment of vacuum preloading, stacking and vacuum preloading, and vacuum precipitation plus vibration. The change of pore water pressure can reflect the adoption of various reinforcement measures on the one hand. The formation and dissipation of excess pore water pressure and the transfer of vacuum in the soil during the foundation treatment process can also reflect the rein...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the current combined use of vacuum preloading, surcharge and vacuum preloading, and in the foundation treatment of vacuum dewatering plus vibration method, the measurement of groundwater level under the condition of excess pore water pressure and negative pressure requires the use of Different methods and devices are used for measurement, and the defect of real-time measurement cannot be realized, and a pore water pressure measurement device in the vacuum preloaded foundation reinforcement area has been developed, which can meet the real-time measurement of groundwater level under the condition of excess pore water pressure and negative pressure. Measurement

Images