Rockfill compaction density measurement method and device
A rolling density and measurement method technology, applied in the field of engineering and construction, can solve the problems of complicated mathematical modeling and data processing, unsatisfactory rolling density measurement methods and devices, and difficulty for engineering and technical personnel to understand and apply. The effect of low comprehensive use cost, small workload and high work efficiency
Active Publication Date: 2014-06-18
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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Problems solved by technology
Since the additional mass method is to determine the density of the rockfill body by establishing a mathematical model, it is a method in an idealized state where the rockfill body is equal to the spring body, but in fact the internal structure of the rockfill body is mechanically filled and rolled. Complex and diverse, it is difficult to obtain satisfactory results by simply using an idealized mathematical model to measure the quality of rockfill bodies. At the same time, the process of mathematical modeling and data processing is complicated, and it is difficult for ordinary engineers and technicians to understand and apply
[0005] Therefore, the above-mentioned method and device for measuring the rolling density of rockfill bodies are not ideal.
Method used
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[0023] The present invention will be further described in detail below with reference to the drawings and embodiments.
[0024] Look figure 1 In the figure, an additional aluminum-steel reflector 4 is pre-installed on the bottom surface of the rolling layer of the rockfill body 5. There are radar antenna 2 and radar antenna 2 on the rockfill 5 rolling layer directly above the additional aluminum-steel reflector 4 It is connected to the ground penetrating radar 1 through the cable 3, and the radar antenna 2 can move on the rolling layer of the rock pile to determine a suitable position.
[0025] During detection, the radar antenna 2 transmits radar wave signals to the additional aluminum steel reflector 4 on the bottom surface of the rolling layer of the rockfill body 5. The radar wave signals propagate downward and are reflected back to the ground by the additional aluminum steel reflector 4, and the radar antenna 2 receives After the radar wave signal reflected by the aluminum st...
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Abstract
The invention discloses a rockfill compaction density measurement method and device. The technical scheme is characterized in that a check point is arranged on the bottom surface of a rockfill compaction layer, an additional aluminum steel reflector is arranged to measure the coordinate elevation; after the spreading of the rockfill compaction layer is finished, a cross wide-angle radar test is performed right above the additional aluminum steel reflector; radar reflected waves are processed by a computer to obtain detection parameter values such as travel time, amplitude, compaction layer thickness and the like; and after the detection parameter values are subjected to comparative analysis, the density value of the rockfill compaction layer on the check point can be calculated. The method is convenient to use, high in accuracy and low in cost.
Description
Technical field [0001] The invention relates to a method and device for physical survey and detection of engineering buildings, in particular to a method and device for measuring the rolling density of rockfill bodies, and belongs to the technical field of engineering buildings. Background technique [0002] In water conservancy and hydropower dams, roadbeds and artificial site projects, roller compacted rockfills are used more and more widely as filling materials. Rockfill is a kind of friction aggregate with a certain gradation, non-aggregation and strong permeability. Only when the rockfill body reaches a high degree of compactness, can it achieve the expected strength and tensile strain capacity. The compactness has a significant impact on the performance of the rolled rockfill body and is one of the main control indicators of construction quality. At present, in the construction of roller compacted rockfill bodies at home and abroad, the measurement and control of the compa...
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IPC IPC(8): G01N9/00E02D1/08
Inventor 尹学林
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD