Water and soil pressure monitoring rod for shield tunnel

A technology for water and soil pressure and shield tunneling, which is applied in the measurement of fluid pressure, force, and measurement device, etc., can solve the problems of single monitoring object and affect the reliability of soil pressure monitoring results, achieve small integration volume, overcome the inability to measure real Earth pressure, the effect of more flexibility in the measurement site

Active Publication Date: 2016-01-20
上海瓴云土木工程咨询有限公司
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Problems solved by technology

The earth pressure gauge is wrapped by the grouting layer behind the wall, which affects...

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  • Water and soil pressure monitoring rod for shield tunnel
  • Water and soil pressure monitoring rod for shield tunnel
  • Water and soil pressure monitoring rod for shield tunnel

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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0031] Such as figure 1 As shown, this embodiment provides a shield tunnel water and soil pressure monitoring rod, which is arranged in the grouting hole, and one end passes through the segment C and the grouting layer B in order to contact the soil A, and is used to measure the soil A pressure and pore water pressure, and the other end is connected to a strain gauge. The shield tunnel water and soil pressure monitoring rod includes a pressure monitoring rod body 3, and the pressure monitoring rod body 3 includes a cylindrical rod-shaped rod body 4, an end compartment 8 connected to ...

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Abstract

The invention relates to a water and soil pressure monitoring rod for a shield tunnel, and the rod comprises a pressure monitoring rod body. The pressure monitoring rod body comprises a cylindrical rod body, an end compartment connected to one end part of the cylindrical rod body, and a sealing box which is disposed at the other end of the cylindrical rod body in a sleeving manner. The interior of the end compartment is provided with a soil pressure sensor and a pore water pressure sensor, wherein leading-out wires disposed on the soil pressure sensor and the gap water pressure sensor pass through the cylindrical rod body to be connected with a strain gauge. During soil pressure monitoring, the pressure monitoring rod body sequentially passes through a pipe piece and a grouting layer to reach soil. A joint of the pipe piece with the pressure monitoring rod body is sealed by the sealing box. The soil pressure sensor and the pore water pressure sensor are used for measuring soil pressure and pore water pressure at the same time, and the measurement results are transmitted to the strain gauge through the leading-out wires. Compared with the prior art, the rod is convenient to install and use, is high in reliability, and can measure the soil pressure and the pore water pressure at the same time.

Description

technical field [0001] The invention relates to the technical field of tunnel shield parameter measurement, in particular to a shield tunnel water and soil pressure monitoring rod. Background technique [0002] The shield method construction is a fully mechanized construction method in the tunnel excavation method. It pushes the shield machine in the ground, supports the surrounding rock through the shield shell and segments to prevent collapse into the tunnel, and at the same time Excavate the soil with a cutting device in front of the excavation face, transport it out of the hole through the excavation machine, push it in the rear with a jack, and assemble the prefabricated concrete segments to form a mechanized construction method of the tunnel structure. The superiority of shield tunneling method in technology and safety is widely used in tunnel engineering at present. [0003] A special process is used in the construction of the shield tunnel - grouting behind the wall...

Claims

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Application Information

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IPC IPC(8): G01L1/00G01L11/00
Inventor 白云胡向东邓声君陈昂
Owner 上海瓴云土木工程咨询有限公司
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