Pre-embedded fixing device and embedding method for single-hole multi-point pore water piezometer

Abstract

A single-pore multi-point pore water pressure meter embedding fixing device and an embedding method thereof are disclosed. The device comprises a fixing component, a connecting component and a container, wherein the fixing component consists of a plurality of hanging rods; each hanging rod is provided with a vent hole; two ends of each hanging rod are provided with a screw thread and a sleeve; and one side of each hanging rod is provided with a guidance sliding chute. The connecting component consists of a connecting plate and a supporting plate. The supporting plate is provided with a vent hole. One side of the connecting plate is inserted into the guidance sliding chute; the other side is fixed with an annular hoop. A pore water pressure meter is installed inside the annular hoop. The container for containing water to dip the pore water pressure meter is arranged on the supporting plate. A lead wire hole is arranged on the top of the container for containing water. A pulling wire is arranged on the lead wire of the pore water pressure meter. A signal cable of each pore water pressure meter is led outside a monitoring hole upwardly. The single-pore multi-point pore water pressure meter embedding fixing device solves the problem that the pore water pressure meter in the single-hole multi-point manner is easy to deflect; accordingly, with the application range being enlarged, the single-pore multi-point pore water pressure meter embedding fixing device has the advantages of short device embedding time, low construction cost, low construction difficulty, high monitoring precision, reliable long-term monitoring data, or the like.

Description

technical field [0001] The invention belongs to the field of pore water pressure testing in in-situ observation of geotechnical engineering, and particularly relates to the monitoring of deformation and stability of breakwaters and foundation structures in complex and changeable environments of open unprotected waters, and can be used for single-hole multi-point pore water Synchronous installation of pressure gauges and improvement of monitoring data accuracy. Background technique [0002] With the continuous improvement of my country's economic status in the development of global production, and at the same time meeting the adjustment of national development strategies and the requirements for a substantial increase in port capacity, my country's port construction has developed towards a large-scale and deep-water pattern in recent years. However, there are a large number of deep soft soil layers with poor physical and mechanical indicators in the coastal deep-water areas o...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that adjacent pore water piezometers easily deviate from the design elevation in the single-hole multi-point mode, and propose a single-hole multi-point pore water piezometer pre-embedded fixing device and its embedding method, which can accurately control phase The burial depth of the adjacent pore water piezometer improves the monitoring level

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