Movable dam seepage path weak magnetic detection data acquisition device and method

A mobile, magnetic detection technology, applied in the direction of material magnetic variables, etc., can solve the problems of heavy data correction workload, difficult data processing and analysis, and large changes in the elevation of measuring points, so as to save manpower and material resources, simple operation, and high work efficiency Effect
CN113514535AActive Publication Date: 2021-10-19CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
Publication Date
2021-10-19

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Abstract

The invention provides a movable dam seepage path weak magnetic detection data acquisition device and method. The device comprises a weak magnetic signal excitation device, a weak magnetic signal receiving device and a main control system. The weak magnetic signal excitation device is used for forming a current loop in a water body in a seepage path of a dam so as to excite and generate a weak magnetic signal. The weak magnetic signal receiving device comprises a balloon, a three-component magnetic receiving sensor carried on the balloon, and three winches which are located on the ground and can automatically take up and pay off stranded wires. The main control system is used for adjusting the length of the stranded wires of the winches, controlling the lift-off height of the balloon and processing the received weak magnetic signals. The device is not affected by terrain, data do not need terrain correction, the calculation workload can be greatly reduced, magnetic interference generated by using conductors such as magnetic metal can be effectively avoided, magnetic field intensity distribution and vertical magnetic field gradient distribution at different elevations are compared, multiplicity of interpretation results can be effectively reduced, and the working effect of treatment of penetration hidden dangers is greatly improved.
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Description

technical field

[0001] The invention relates to the field of dam engineering safety, in particular to a movable type dam seepage path weak magnetic detection data acquisition device and method. Background technique

[0002] Dam engineering is an important part of my country's flood control system, and its safe operation is related to the safety of people's lives and properties on both sides of the dam. Since the founding of New China, especially after the flood of the Yangtze River in 1998, our country has built a large number of dams on major rivers. With the increase of the operating life, coupled with the influence of natural, social and human factors, some dam projects have different degrees of potential safety hazards, which have a serious impact on the quality, safety and healthy operation of the dams.

[0003] Due to the small difference in physical properties, small size, wide distribution, and difficulty in detection, dyke seepage has become the top priority in the...

Claims

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