An instrument for automatically measuring the frost heaving deformation of the full-section of the channel and its measurement and installation method

Abstract

The invention discloses an instrument for automatically measuring the frost heave deformation of a full section of a channel and a measurement and installation method thereof. The instrument takes a reference pile as a fixed point, and automatically measures the readings of a measurement module laid on the full section of the channel, so as to realize the measurement of the channel. For the real-time measurement of the frost heave deformation of the entire section, through the measured data and the geometric relationship of each measurement module, the frost heave variation of the entire section of the channel can be calculated; The module directly measures the frost heave deformation of the undisturbed soil surface, and records the measurement data in the control system in real time, which can ensure the accuracy and real-time performance of monitoring and overcome the errors caused by indirect measurement. The invention has reasonable design, simple process, easy processing and low price of main parts, so that the full-section frost heave deformation instrument has a higher cost advantage. Simple.

Description

technical field [0001] The invention relates to an instrument for automatically measuring the frost heaving deformation of the full section of a channel and a measuring and installing method thereof, belonging to the technical field of water conservancy engineering safety monitoring. This patent is completed based on the national key research and development plan "Monitoring, Early Warning and Health Diagnosis Technology for Long-distance Water Supply Channels in Alpine Regions (2017YFC0405104)". Background technique [0002] With my country's South-to-North Water Diversion Middle Route Project and Xinjiang Yin'ejiwu Phase I Project put into use, the problem of water resource shortage in some areas caused by the uneven distribution of my country's water resources has been greatly alleviated. The batch of water conveyance projects are all in the freeze-thaw cycle area in winter. As these water conveyance projects are put into use one after another, the channel management and d...

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Problems solved by technology

[0003] The traditional frost heave deformation gauge is limited by the measurement method. In order to obtain the overall frost heave deformation, it often needs to be installed on the surface of the channel. When the channel passes through water, it is often damaged by floating objects on the water surface.

Moreover, the frost heave meter is limited by the installation environment, and its reference point (fixed point) is often selected at the top of the channel. According to the conventional calculation results of frost heave deformation, when the channel foundation soil undergoes frost heave deformation, the channel There is still a lot of frost heave deformation on the roof, which will cause the measured frost heave deformation to be too small to effectively reflect the actual frost heave damage

The most critical thing is that the traditional frost heave deformation gauge can only measure the frost heave deformation at a certain point on the channel, and the selection of the point is relatively random, so it is difficult to install and bury it in the area with the largest frost heave deformation, and it cannot reflect the overall frost heave deformation of the channel. Therefore, how to infer the overall frost heave deformation of the channel based on the measured frost heave deformation data has always been a difficult problem for the channel design and management departments.

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