Anti-silting pore piezometer and method of use

A porosimeter and anti-silting technology, which is used in the measurement of fluid pressure, buildings, instruments, etc., can solve the problems of silting of permeable parts, not considering the blockage of permeable parts, affecting the accuracy of porosimeter measurement, etc., to avoid measurement effect of error

Active Publication Date: 2019-12-10
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, none of the above studies considered the clogging of permeable components.
In complex field conditions, the pores of the permeable parts (permeable stones) are blocked by fine particles during long-term use, which makes the permeable parts silted up and affects the accuracy of the pore piezometer measurement

Method used

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  • Anti-silting pore piezometer and method of use

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Embodiment 1

[0030] Such as figure 1 As shown, the present invention proposes an anti-silting piezometer, including a piezometer body, a flushing system, and a collection system. The piezometer body includes a water-permeable part 1, a top cover 2, an O-shaped rubber ring 3, Pressure sensor 4 and data acquisition instrument 6, the top cover 2 is provided with a through hole 8, the water-permeable component 1 is installed on the outside of the top cover 2, and the pressure sensor 4 is located on the inside of the top cover 2 In the cavity 7 mentioned above, the pressure sensor 4 is connected with the cavity wall of the cavity 7 through the O-shaped rubber ring 3 .

[0031] The flushing system includes a valve 9 and a water pump 10 , and the hole 8 communicates with the water-permeable component 1 , the cavity 7 , the valve 9 and the water pump 10 .

[0032] The water-permeable part 1 is a material with pores penetrating through, and the pores near the cavity are small, and the pores on the...

Embodiment 2

[0045] Certainly, the water pump described in the present invention can also adopt a one-way water pump. When a one-way water pump is adopted, the method for using the anti-silting type pore piezometer comprises the following steps:

[0046] Step 1: bury the anti-clotting type pore piezometer at a set position, and connect the data acquisition instrument with the pressure sensor;

[0047] Step 2: Open the valve, disconnect the water pump, the pore water in the external soil slowly enters the cavity through several channels in the top cover, then close the valve, and connect the water pump ;

[0048] Step 3: Turn on the data acquisition instrument and start pore pressure measurement;

[0049] Step 4: When the pores in the top cover are clogged, open the valve, turn on the water pump, and wash away the clogging on the surface of the top cover and in the internal channels of the top cover through the operation of the water pump, and the clogging is solved Finally, close the va...

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Abstract

The invention provides an anti-clogging type pore piezometer and a use method thereof, which belong to the field of measuring devices. It includes a pressure sensor, which is used as the basic pore pressure measuring element, and the pressure sensor is connected to the signal of the data acquisition instrument through a wire; a top cover made of hard material is installed on the pressure sensor, and the top cover seals the sensing probe of the pressure sensor The cover is buckled in a cavity, and the cavity communicates with the outside through several holes provided in the top cover; it also includes a backwashing system, which includes a water pump, and the water pump is connected to several holes on the top cover through a pipeline. One or more of the channels are connected, and valves are installed on the pipelines. The invention provides an anti-silting piezometer, which can avoid measurement errors caused by stagnation of the piezometer.

Description

technical field [0001] The invention relates to a measuring device, in particular to an anti-clogging type pore piezometer and a using method thereof. Background technique [0002] The pore piezometer is a sensor embedded in the soil to measure the pore water pressure. It is composed of a pressure sensor and a permeable stone. It is mainly used to measure the pore water pressure of the soil inside structures such as earth-rock dams, embankments, and slopes. . Based on the measurement principle of the pore piezometer, the patent CN101655405A proposes to display the water pressure through a transparent glass tube and measure the pore water pressure in the depth of the soil. Based on multiple traditional pore piezometers, patent CN203498817U proposes a continuous pore water pressure measuring device, which can measure pore water pressure at different depths. However, none of the above studies considered the clogging of the permeable parts. In complex field conditions, the po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L11/00E02D1/00
CPCE02D1/00
Inventor 刘坚陈大硕吴跃东陈锐
Owner HOHAI UNIV
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