Space-time monitoring device for dam seepage behaviors and monitoring method

Abstract

The invention discloses a space-time monitoring device for dam seepage behaviors and a monitoring method. The space-time monitoring device comprises a vertical force bearing and fiber loading column, an outer edge through pipe and a sensing optical fiber, wherein a left force bearing cross beam and a right force bearing cross beam are arranged on two sides of the vertical force bearing and fiber loading column respectively; the vertical force bearing and fiber loading column is sleeved with the outer edge through pipe; a fiber collection box is arranged above a second transition round end; the sensing optical fiber in the fiber collection box penetrates the outer edge through pipe, is connected with an element bearing body comprising a temperature measuring device, is then arranged in the vertical force bearing and fiber loading column in an S form, bypasses the second transition round end and a first transition round end sequentially, penetrates an elastic device and leads out from a third transition round end. The space-time monitoring device used for the dam seepage behaviors and provided with the embedded bi-directional double-S-shaped sensing fiber is constructed in a fusion manner, a dam seepage behavior monitoring technology develops in the trend of intelligentization, digitization, integration and miniaturization, and horizontal and vertical quantitative and qualitative evaluation in time and space can be realized.

Description

technical field [0001] The invention relates to a time-space monitoring device and a monitoring method for seepage properties of embankments, belonging to the field of water engineering health monitoring and detection. Background technique [0002] my country has a long history of embankment building. According to statistics, the total number of existing dikes in my country is 294,100 km. About half of the country's population, 1 / 3 of the cultivated land and 70% of the property are protected by embankments. Restrictions in many aspects, coupled with the long history of operation of many embankments and improper management and maintenance, there are relatively prominent engineering hidden dangers in embankment projects in my country. The safety of embankments is directly related to the safety of millions of people's lives and property in the protected area and the achievements of economic construction. Therefore, it is of great significance to understand and grasp the law of di...

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Problems solved by technology

[0002] my country has a long history of embankment building. According to statistics, the total number of existing dikes in my country is 294,100 km. About half of the country's population, 1 / 3 of the cultivated land and 70% of the property are protected by embankments. Restrictions in many aspects, coupled with the long history of operation of many embankments and improper management and maintenance, there are relatively prominent engineering hidden dangers in embankment projects in my country. The safety of embankments is directly related to the safety of millions of people's lives and property in the protected area and the achievements of economic construction. Therefore, it is of great significance to understand and grasp the law of dike structure change mechanism and realize the dynamic safety and dynamic prediction and real-time monitoring of dikes to ensure the safe operation of dikes, improve scientific management, and reduce post-disaster losses.

[0003] Embankment engineering is a large-scale system engineering with complex structure and variable external loads. Traditional research is mostly based on the development of classical mathematics and mechanics theories. Most of them analyze the safety characteristics of embankment structures from a qualitative and static perspective, ignoring the internal The variability and dynamics of parameters have a long-term impact on the embankment structure. In addition, during the research process, embankments and earth-rock dams are often regarded as the same structure, ignoring the differences between the two, which will inevitably lead to certain deviations in the study of embankment characteristics and monitoring management.

[0004] However, seepage failure and slope instability failure are the structural failure forms with the highest proportion in embankment engineering, so their failure mechanism has always been the focus of research at home and abroad. To realize the characteristics research of embankment deformation mechanism and the analysis of safety monitoring and management, First of all, it is necessary to develop advanced monitoring technology, and the conventional monitoring methods of dam seepage behavior are too old, and are extremely susceptible to interference from complex environments such as external electromagnetics and humidity. In the case of irregular body structures and the need for long-term monitoring, conventional monitoring methods are seriously lacking in engineering applicability, and there is an urgent need to develop a type of seepage behavior monitoring technology that can adapt to complex environments and can complete long-term high-precision operation

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