An online automatic monitoring system for reservoir dam seepage safety

Abstract

The invention discloses a reservoir dam body seepage safety online automatic monitoring system. A water level measurement apparatus comprises a water level wheel, a measurement cable, a float, a hoisting wheel, a gear set, a worm, a gear wheel, a print wheel set and a constant torque motor, wherein the circumferential surface of each print wheel of the print wheel set refers to two-dimensional code identifications corresponding to values from 0 to 9, which are respectively arranged on ten arc segments from 0 to 9. The water level monitoring apparatus drives print wheels through the water level wheel and replaces digits on the print wheels with two-dimensional codes such that the water level data visual recognition rate is greatly improved; and the water level and the temperature of each piezometer tube of a reservoir dam body, the water level and the temperature of a measurement point are uploaded to a host computer through GPRS, the host computer, according to the obtained water level of each piezometer tube of each segment of the dam body, quantitatively analyzes influence factors of the water levels of the piezometers, then through combination with external temperature and climate conditions, a safety warning about a dam is given, and thus a dam accident is effectively prevented.

Description

technical field [0001] The invention relates to a water level monitoring device, in particular to an on-line automatic monitoring system for seepage safety of a reservoir dam body. Background technique [0002] Reservoir dams are common engineering projects in the construction of water conservancy projects. Dam failures occur frequently, and the huge disasters caused have attracted great attention from the international community. The safety and stability of the dam plays a very important role in ensuring the safety of people's lives and properties, so it is necessary to ensure the safety and stability of the dam during the operation of the reservoir. The main factor affecting the safety of reservoir dams is leakage, which will have an important impact on the stability of dams. The change of the water level of the piezometric tube of the reservoir dam can reflect the seepage of the dam, so the change of the water level of the piezometric tube can reflect the quality of the ...

AI Technical Summary

Problems solved by technology

[0004] The dam piezometer monitoring instruments designed abroad are basically aimed at large or even super-large reservoirs. The surrounding environment of such reservoirs is relatively stable, while domestic small and medium-sized reservoirs are mostly small and medium-sized reservoirs with diverse environments. These instruments are used in small and medium-sized reservoirs as follows: Problem: On the one hand, limited by environmental factors, the monitoring instruments cannot give full play to their advantages; on the other hand, the daily maintenance costs of the instruments are high, which will inevitably increase the burden on reservoir operation

The invention has been practically applied, and its advantages are reliability and stability; but there are many disadvantages: large error (system error is 0.5-2cm larger), many mechanical failure rates, the control part of the water level gauge is not intelligent, and the network needs to be connected. Machine to obtain the water level height, more, the Gray code encoder is a precision instrument, used in a harsh environment, the production cost and maintenance cost are very high

Each of these water level gauges has its own advantages, but each has its own defects. The common defects require line power supply, low intelligence, poor network function, etc.

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