Pore hydraulic measuring sensor

A technology for measuring sensors and pore water pressure, applied in measuring devices, measuring fluid pressure, measuring fluid pressure through electromagnetic components, etc., can solve the problems of sensitive chip interference, inability to measure, and inability to accurately reflect the real situation of pore water pressure, etc., to achieve Effects that overcome directionality and prevent being blocked or damaged by hard objects

Inactive Publication Date: 2005-01-26
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

At present, the commonly used hydraulic sensors not only have directionality, but also their sensitive chips are easily disturbed by surrounding hard objects such as stones, so they cannot meet the measurement requirements for pore water pressure of sandstone bodies and soil-rock mixtures. The measured data cannot accurately reflect the real situation of pore water pressure
In-depth study of landslides hampered by inability to accurately measure pore water pressures in sandstone and soil-rock mixtures

Method used

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  • Pore hydraulic measuring sensor
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Embodiment Construction

[0008] The present invention will be further introduced below in conjunction with the accompanying drawings.

[0009] The pore water pressure measuring sensor of the present invention comprises a hydraulic pressure sensor 1 and a closed film 2, the closed film 2 is made of rubber, the hydraulic pressure sensor 1 is wrapped in the closed film 2, and the shape of the closed film 2 matches the shape of the hydraulic sensor 1 , and its volume is slightly larger than that of the hydraulic pressure sensor 1. Water or similar low-viscosity, low-compressibility liquid 3 is filled between the airtight membrane 2 and the hydraulic sensor 1 , and the transmission line 4 of the hydraulic sensor 1 is drawn out from the airtight membrane 2 .

[0010] When the pore water measurement sensor is used for measurement, the hydraulic sensor 1 is placed in the airtight film 2 filled with liquid, so it can not only effectively prevent the hydraulic sensor 1 from being blocked or damaged by hard obje...

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Abstract

A transducer comprises hydrostatic sensor and closed film, of which the hydrostatic sensor is cladded in the closed film. The water or similar liquid is charged to full of the closed film and the transmission line for the hdyrostatic sensor is led out from the closed film. The transducer not only can protect the hydrostatic sensor from damage by hard object or being blocked, but also can carry on the omnibearing detection of pore pressure for dinas or earth and stone mixture because the hydrostatic sensor is set in the closed film which is full of liquid.

Description

technical field [0001] The invention relates to a sensor for measuring pore water pressure. Background technique [0002] Landslide is a natural disaster that often occurs in the natural environment and poses a great threat to human life and property safety. Many countries and scientific research institutions in the world have invested a lot of money and manpower in the study of landslides, especially in China's current large-scale construction of large-scale water conservancy facilities, which makes the study of landslides more and more important. Most landslides are related to the pore water pressure in the pores of sandstone and soil-rock mixture on the mountain. The greater the pore water pressure in the pores of sandstone and soil-rock mixture, the greater the probability of landslides. It is closely related to the pore water pressure of the soil-rock mixture and the water content. By measuring the pore water pressure in the sand-stone body and the soil-rock mixture, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L9/00G01L19/00
Inventor 刘曰武徐永君
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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