A monitoring method for the occurrence, development and location of dam seepage damage
A dyke, the same technology, applied in the monitoring of the occurrence, development and location of dyke seepage damage, dyke seepage damage diagnosis and geophysical detection information fields, can solve the problems of energy wave reflection and attenuation, complexity, different propagation speed of microseismic waves, etc. Achieve the effect of saving equipment resources, improving work efficiency, and enriching information
Active Publication Date: 2021-06-01
CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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Problems solved by technology
However, the actual dam structure is relatively complex, and the microseismic waves generated by leakage and microcracks have different propagation speeds in all directions in the dam, and energy waves will reflect and attenuate when propagating in the dam. The assumption of the uniform velocity model seriously affects the microseismic source. positioning accuracy, thus affecting the positioning effect of the microseismic monitoring method
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[0025] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.
[0026] An embodiment of the present invention provides a monitoring method for the occurrence, development and location of seepage damage in dams, including the arrangement and installation of signal receiving sensors, data collection, inversion calculation of underground soil wave velocity, time of seepage damage, and time of seepage damage. The identification and extraction of the generated vibration signal and the determination of the location of the penetration damage.
[0027] Specifically, see figure 1 , the method includes the steps of:
[0028] Step 1. Arrange three-component sensor stations along the three-dimensional space of the embankment in the detection area of important dam dangerous sections. A measuring point is arranged in three-dimensional space according to the estimated detection...
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The invention proposes a monitoring method for the occurrence, development and location of seepage damage in a dam, including the arrangement and installation of a signal receiving sensor, data acquisition, inversion calculation of the wave velocity of a dam structure, the time when seepage damage occurs, and the occurrence of seepage damage. The identification and extraction of the microseismic signal and the determination of the location of penetration damage. The present invention can not only use a set of monitoring system for signal acquisition, save equipment resources, but also provide accurate seepage damage occurrence time and seepage damage location, evaluate the seepage damage degree, gain time for hidden danger treatment, and greatly improve the The work effect of hidden danger treatment.
Description
technical field [0001] The invention relates to the field of dam engineering safety, mainly relates to dam seepage damage diagnosis and geophysical detection information technology, in particular to a monitoring method for occurrence, development and location of dam seepage damage. Background technique [0002] Dam engineering is an important part of my country's flood control and disaster reduction system. Most of the dams and their affiliated concrete structure piercing buildings have aging and disease phenomena, which are prone to contact seepage dangers and even dam failures. Levee breaches generally go through a slow and then urgent development process such as the infiltration development stage, seepage development stage, collapse occurrence stage, and collapse development stage. To achieve emergency rescue as soon as possible, do a good job in real-time monitoring and monitoring of the operation status of the dam project, forecast the development trend of the dangerous...
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IPC IPC(8): G01V1/28G01V1/20G01V1/30
CPCG01V1/20G01V1/288G01V1/303
Inventor 邬爱清肖国强周华敏胡悦欧阳涛张敏夏波
Owner CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION