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Core wall dam settlement monitoring method based on array displacement meters

A subsidence monitoring and displacement meter technology, which is applied to measuring devices, surveying and navigation, height/horizontal measurement, etc., can solve the problems of easy loss of initial value and low survival rate, and achieve small construction interference, strong adaptability, and instrument survival Guaranteed results

Inactive Publication Date: 2021-02-02
YALONG RIVER HYDROPOWER DEV COMPANY
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Problems solved by technology

[0007] The purpose of the present invention is to provide a core wall dam settlement monitoring method based on an array displacement meter, which can solve the problems of low survival rate of traditional core wall dam settlement monitoring instruments, easy loss of initial value, and only point layout. , which is of great significance to promote the progress of monitoring technology in related fields

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  • Core wall dam settlement monitoring method based on array displacement meters
  • Core wall dam settlement monitoring method based on array displacement meters
  • Core wall dam settlement monitoring method based on array displacement meters

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Embodiment Construction

[0036] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0037]The technical problem to be solved by this method is to develop a core wall dam settlement monitoring method based on an array displacement meter. This monitoring technology can be arranged linearly and can obtain the initial value of dam settlement deformation. It is not only suitable for 100m and below core wall dams, but more importantly, it can be applied to 200-300m ultra-high core wall rockfill dams" The special monitoring environment of high earth pressure, high water pressure and large deformation can realize the effective monitoring of the whole process of filling construction and subsequent operation of extra-high core wall dams. The method introduces the array displacement gauge into the field of core wall dam settlement mo...

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Abstract

The invention discloses a core wall dam settlement monitoring method based on array type displacement meters, which relates to the field of dam safety monitoring. The method comprises the following steps of S1, completing the installation of the array type displacement meters through employing a horizontal installation and burying method, S2, establishing a data processing three-dimensional coordinate system according to the burying orientation of the array type displacement meter, and recording and reading included angles phit and thetat between each standard measurement unit and an X axis and a Z axis due to dam body deformation after a period of time t, S3, rechecking the measured value of each measurement unit, and if finding that the ith standard measurement unit is invalid or the measured data of the included angles phit(i) and thetat(i) with the X axis and the Z axis are abnormal, taking the measured value of the (i-1)th measurement unit or the (i+1)th measurement unit or the average value of the two measurement units as the measured value of the ith measurement unit, S4, calculating the deformation monitored by each standard measurement unit of the array type displacement meter over time, and S5, accumulating the deformation of all standard measurement units from the base point to the measurement point of the array type displacement meter to obtain the total deformationcorresponding to each measurement point.

Description

technical field [0001] The invention relates to the field of dam safety monitoring, in particular to a core wall dam settlement monitoring method based on an array displacement meter. Background technique [0002] Dam safety monitoring is an important task in the construction of water conservancy and hydropower projects. Among various safety monitoring items during the construction period and operation period of the core wall dam, the settlement deformation monitoring is the most important control monitoring item. Accurate and reliable monitoring results are very important for feedback and optimization of design and construction, analysis and evaluation of dam construction and working performance during the operation period. Safety and stability, guiding dam operation and maintenance are of great significance. However, the existing engineering experience shows that because the safety monitoring of ultra-high core rockfill dams faces special technical problems such as "high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/32G01C5/00E02B7/02E02B1/00
CPCG01B21/32G01C5/00E02B1/00E02B7/02
Inventor 李宏璧张贵科张东明刘存福杨培洲杜成波杨希岳攀王爱国邓韶辉
Owner YALONG RIVER HYDROPOWER DEV COMPANY
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