Si-DTS-based sandy soil seepage quantity monitoring platform

Abstract

The invention discloses a Si-DTS-based sandy soil seepage quantity monitoring platform. The platform comprises a heating system, a seepage system and a distributed optical fiber temperature measurement system, wherein the heating system comprises a silicone rubber heating band and an AC power supply; the seepage system comprises a model pipe and a water supply system for providing seepage for sandy soil in the model pipe; the distributed optical fiber temperature measurement system comprises a temperature measurement optical fiber and a DTS demodulator and a distributed optical fiber temperature measurement main control computer, which are connected with the temperature measurement optical fiber in sequence; the temperature measurement optical fiber is wound on the outer wall of a PVC pipe; the silicone rubber heating band is wound outside the temperature measurement optical fiber to form a measurement pipe; and the distributed optical fiber temperature measurement main control computer is used for acquiring and analyzing corresponding position and temperature information of the temperature sensing optical fibers. The platform is capable of testing a relative relationship between atemperature intermediate value of the measurement pipe in the sandy soil and a seepage quantity through the heating system, the seepage system and the distributed optical fiber temperature measurement system, so as to obtain a seepage quantity of a seepage field in the sandy soil, and is simple to operate and high in correctness.

Description

technical field [0001] The invention belongs to the field of sandy soil seepage disaster prevention and control, and in particular relates to a sandy soil seepage flow monitoring platform based on Si-DTS. Background technique [0002] For the safety monitoring of earth-rock structures such as earth-rock dams and embankments, seepage is one of the most important monitoring contents. Seepage monitoring of earth-rock structures mainly includes seepage pressure, seepage flow and other items. The traditional soil-rock structure seepage monitoring system mainly consists of a piezometer (or piezometric tube) for measuring seepage pressure and a weir for measuring seepage flow. [0003] Research in recent years has found that temperature can be continuously transmitted through the medium, which provides a new temperature measurement for the monitoring of structural seepage. Among various temperature tracing methods for seepage monitoring, the Distributed Fiber Optic Temperature Se...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a sandy soil seepage monitoring platform based on Si-DTS, to solve the problem that the existing sandy soil seepage monitoring platform is not suitable for monitoring the seepage field with a small flow rate

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