Real-time monitoring device of earth-rock dam material compaction quality

A technology for real-time monitoring of compaction quality. It is applied in the field of basic soil survey, soil protection, construction, etc., and can solve the problems of compaction quality monitoring values ​​without geographic attributes, inconsistent compaction status, and inability to meet the requirements.

Inactive Publication Date: 2013-04-24
TIANJIN UNIV
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Problems solved by technology

[0005] However, the above-mentioned devices are basically concentrated in the field of road construction. Since the properties of earth-rock dam materials (material properties, gradation, water content, dry density, etc.) Spectrum) under the same situation, the compaction state of the pressed material is not consistent, so the above-mentioned devices are not completely suitable for characterizing the compaction quality monitoring of earth-rock dam dam materials
More importantly, the compaction quality indicators measured by these devices cannot correspond to the geodetic coordinates (such as literature [9-12]), that is, the compaction quality monitoring values ​​have no geographic attributes

Method used

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  • Real-time monitoring device of earth-rock dam material compaction quality

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Embodiment Construction

[0044] The structure of the system see figure 1 , including roller acceleration monitoring module, GPS positioning module, data processing module, wireless transmission module (DTU), on-board display module, rolling machine power module and database server, a total of 7 parts.

[0045] The acceleration sensor of the roller acceleration monitoring module is installed on the vibrating wheel and does not rotate with the vibrating wheel. The time-domain analog signal of the acceleration of the rolling machine wheel collected by the acceleration sensor is converted into a time-domain digital signal through signal analog-to-digital conversion. Furthermore, fast Fourier transform (FFT) is performed on the acceleration time-domain digital signal to obtain the frequency spectrum data of the vibration acceleration of the roller (including various frequencies and corresponding amplitudes of the acceleration signal), and then through the SPI interface (Serial PeripheralInterface , serial...

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Abstract

The invention belongs to the field of dam construction quality control of hydraulic and hydro-power engineering, and aims to provide a device which is suitable for earth-rock dam materials, realizes real-time monitoring on dam material compaction quality, remotely transmits monitoring information to a database for subsequent quality evaluation application and realizes the remote monitoring on a construction site. The technical scheme is that a real-time monitoring device of earth-rock dam material compaction quality comprises a runner wheel acceleration monitoring module, a global positioning system (GPS) positioning module and a data processing module, wherein an acceleration sensor of the runner wheel acceleration monitoring module is mounted on a part which is on a vibrating wheel of a rolling machine and which does not rotate with the vibrating wheel; and acceleration frequency spectrum data and the current sampling time are transmitted in the data processing module. The real-time monitoring device is mainly applied to the hydraulic and hydro-power engineering.

Description

technical field [0001] The invention relates to the field of dam construction quality control in the field of water conservancy and hydropower engineering, in particular to a real-time monitoring device for the compaction quality of earth-rock dam materials. Background technique [0002] The traditional methods for evaluating the compaction quality of earth-rockfill dam materials mainly use the results of limited test pit tests to reflect the rolling quality of the entire construction unit warehouse surface. This method generally takes a long time, is destructive, and the results are one-sided, which cannot fully reflect the rolling quality of the entire construction unit warehouse surface; at the same time, because the test results cannot be obtained quickly, which affects the construction progress, it cannot meet the requirements of high strength and high mechanization. construction requirements. Therefore, it is of great significance to timely feedback and control the co...

Claims

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Application Information

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IPC IPC(8): E02D1/00E02D3/046
Inventor 刘东海王爱国
Owner TIANJIN UNIV
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