Comprehensive detection device and method for leakage of reservoirs and hydropower stations

Abstract

The invention discloses a comprehensive detection device and method for leakage of reservoirs and hydropower stations. The device comprises a host machine and a probe, wherein a shell is arranged on surface of the probe; and a tracer agent controller, a tracer agent memory, a tracer agent release device and an image acquisition device are sequentially arranged in the shell. The device enters a water body by controlling release of a liquid tracer agent, a visible movement track is formed along with the flowing of the water body, and the movement track of the tracer agent is recorded and storedthrough a high-definition camera system, so the flowing characteristics of the water body in various states can be conveniently analyzed and researched, a leakage part, a leakage point, a seepage direction and a leakage degree can be accurately and visually determined, and even the movement rule and trend of the water body at each point can be researched by establishing a numerical simulation model. According to the reservoir water station leakage comprehensive detection method, leakage detection is more accurate and more visual; and the detection device can realize leakage detection in various environments such as clear water, muddy water and the like, is not influenced by water depth, and is accurate in detection.

Description

technical field [0001] The invention relates to a leak detection device and a detection method of a reservoir hydropower station, in particular to a comprehensive leakage detection device and a detection method of a reservoir hydropower station, belonging to the field of leakage detection of reservoirs and hydropower stations. Background technique [0002] At present, 98,000 reservoirs have been built in my country, and more than 40,000 are dangerous reservoirs. Leakage is a common problem in dangerous reservoirs. Serious leakage problems are directly related to the safety of dams. How to be more accurate about these dangerous reservoirs , It is very important to find out the leakage location, leakage point, seepage direction and leakage degree more intuitively. [0003] At present, the traditional methods for leak detection of reservoirs and hydropower stations mainly include tracer method, borehole water injection (or pressurized water) test method, flow velocity test metho...

AI Technical Summary

Problems solved by technology

This method can achieve accurate detection in a wide water environment, but it is often affected by the inhomogeneity of the surrounding medium in the borehole, which will greatly reduce the detection accuracy, and the seepage direction cannot be determined, which is not intuitive

[0008] Other geophysical methods: including electromagnetic method, geological radar, electrical method, etc., can achieve a rough judgment in the detection of shallow and large-scale leakage. Due to the serious interference of the nature of the surrounding medium, it is often impossible to achieve accurate detection. In addition, with the detection depth The detection accuracy of the increase is lower, it is only a macroscopic analysis and judgment, and sometimes the error is very large

[0009] With the application of underwater robots and in-hole video equipment, it is helpful for the detection of leakage in reservoirs and hydropower stations. However, when the water body is particularly clear or turbid and the flow rate is not high, underwater robots and in-hole video equipment cannot Accurately determine the flow direction and flow velocity of the water body. Even if there is a leak point, it is difficult to directly observe the exact leak location through underwater robots, in-hole video equipment or other methods, and detect if there is rising or falling water flow in the borehole At this time, even if the camera can capture the movement trajectory of the impurities, due to the uncertain density of the impurities, it is still impossible to determine the movement speed of the water flow, let alone the movement direction of the water flow.

Images