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Shield earth pressure sensor detection device and method

An earth pressure sensor and pressure sensor technology, which is applied to earth-moving drilling, mining equipment, mining equipment, etc., can solve problems such as the inability to guarantee the uplift or settlement of ground structures and the inconvenience of shield machine operation.

Pending Publication Date: 2021-07-06
CHINA RAILWAY 18TH BUREAU GRP CO LTD +1
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

If the earth pressure value displayed on the operation interface cannot accurately reflect the actual earth pressure in the soil chamber, it will bring great inconvenience to the operation of the shield machine, and it cannot guarantee that the ground structures will heave or settle within a safe range.

Method used

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  • Shield earth pressure sensor detection device and method

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Embodiment Construction

[0020] Such as figure 1 The detection device of the shield earth pressure sensor shown includes an earth pressure sensor 6 and a lead wire 7 for connecting the earth pressure sensor 6 and the shield machine, and the earth pressure sensor 6 is fixedly arranged in the airtight device 5. In this embodiment, The airtight device 5 is a steel drum with an open end. The airtight device 5 is provided with an air pipe joint 4, which is welded on the bottom surface of the steel drum to ensure sealing. The air pipe joint 4 is connected to the air compressor 1 through the air pipe 2. The air pipe 2 is also provided with a pressure gauge 3, and the entire air pipeline is kept sealed.

[0021] The earth pressure sensor 6 is a flat cylinder, the front of which is an elastic earth-facing surface, and the back is provided with a flange. When assembling the above-mentioned detection device, put the soil pressure sensor 6 into the steel drum, with the side facing the soil facing the gas pipe jo...

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Abstract

The invention provides a shield earth pressure sensor detection device and method. The detection device comprises an earth pressure sensor and leads used for connecting the earth pressure sensor and a shield tunneling machine, wherein the earth pressure sensor is fixedly arranged in closed equipment, the closed equipment is provided with an air conveying pipe connector, the air conveying pipe connector is connected with an air compressor through an air conveying pipe, and a pressure gauge is further arranged on the air conveying pipe. According to the detection device, the soil pressure sensor is sealed in a closed space, the compressed air is used for simulating the soil pressure, and the pressure value measured by the soil pressure sensor is compared with the pressure value of the compressed air, so that whether the soil pressure sensor can accurately measure the soil pressure or not can be conveniently and accurately judged.

Description

technical field [0001] The invention belongs to the technical field of shield tunnel construction, and more particularly relates to a detection device and method of a shield tunnel earth pressure sensor. Background technique [0002] With the development of urban rail transit, shield machines play an increasingly important role in subway construction, and earth pressure balance shield machines are widely used in most urban rail transit constructions. The basic working principle of the shield machine is that a cylindrical steel component is pushed forward along the tunnel axis to excavate the soil. The shell of the cylindrical component is the shield, which acts on the excavated unlined tunnel section. Acting as a temporary support, it bears the pressure of the surrounding soil, and sometimes bears the pressure of the groundwater and keeps the groundwater out. Excavation, soil dumping, lining and other operations are carried out under the cover of the shield. [0003] The e...

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Application Information

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IPC IPC(8): E21D9/00E21D9/06E21F17/18E21F17/00
CPCE21D9/003E21D9/06E21F17/18E21F17/00
Inventor 王明利谭伟姿郑卫红韩明建李海峰李强艾国徐锋侯兵臣刘景贤周建龙
Owner CHINA RAILWAY 18TH BUREAU GRP CO LTD
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