Device and method for monitoring settlement of ground surface in deep water area

Abstract

The invention provides a device and a method for monitoring the settlement of a ground surface in a deep water area. The device is characterized in that a liquid storage tank of a silicon pressure type settlement instrument is fixedly arranged on a settlement plate, a silicon pressure sensor is fixedly arranged on a benchmark pile, the liquid storage tank and the pressure sensor are flexibly connected with each other to form a closed self-balancing system placed in a foundation soil layer; then, the change of an elevation difference is converted through testing the change of pressure of liquid in a system, and further, the settlement quantity of the ground surface is obtained. The device has the advantages of simple structure, high convenience for operation, strong adaptability, high measurement precision and the like, and real-time automatic monitoring can be realized, so that the labor cost is greatly reduced, and the working efficiency is improved, therefore the application value is wide.

Description

technical field [0001] The invention relates to the technical field of soil settlement monitoring, in particular to a device and method for monitoring surface settlement in deep water areas. Background technique [0002] In embankment filling and foundation treatment projects, it is necessary to monitor the surface settlement to understand the compression deformation of the foundation during the construction process and ensure construction safety. At present, the surface subsidence monitoring in the wading embankment project is mainly based on the subsidence pan method, that is, the subsidence pan is arranged on the surface of the foundation. When the foundation settles, the elevation of the subsidence pan will drop, and the surface subsidence can be observed by manual reading of the level. . However, this method has limitations and many shortcomings: 1) The embankment in the deep water area is far from the shoreline, and there is no relatively stable erection platform for ...

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Problems solved by technology

However, this method has limitations and many disadvantages: 1) The embankment in the deep water area is far away from the shoreline, and there is no relatively stable platform for conventional leveling, so the test is difficult, and it is affected by many factors such as too long measuring rod, strong wind and waves, etc. , the test accuracy cannot be guaranteed; 2) The settling pan is laid on the embankment body, and the measuring rod must be exposed to the water surface, which greatly interferes with the construction, and is easily damaged by construction machinery, making protection very difficult; 3) Settlement pan damage accidents occur frequently, and It is very difficult or even impossible to repair in situ. Therefore, the continuity of data cannot be guaranteed, and monitoring safety control cannot be realized; 4) The resolution of the instrument is low, and it can only be measured and read manually. The observation accuracy is poor, the work efficiency is low, and labor strong

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