Faced rock-fill dam rolling density and humidity rapid detection method
A face rockfill dam, rolling density technology, applied in dams, barrages, measuring devices, etc., can solve problems such as inability to meet high-strength construction requirements
Inactive Publication Date: 2013-05-01
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to overcome the defect that the existing methods for detecting the rolling density of face rockfill dams by digging pits and injecting water cannot meet the high-strength construction requirements, and provide a rapid detection method for the rolling density and humidity of face rockfill dams
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] Prepared equipment: 1 nuclear density meter, 1 3kw generator, 1 2kw hand-held electric drill, several L1000mm, φ30mm drill pipes, transportation vehicle, 1 GPS receiver with accuracy within 1m, 1 set of radiation protective clothing, personal radioactivity measurement There are several tables, and the drilling templates are processed and made according to the actual situation.
[0013] Install and fix the generator in the appropriate position of the transportation vehicle (to ensure the ventilation of the generator when the vehicle is stationary), drive the transportation vehicle to the vicinity of the detection point during detection, select the precise detection point, and use GPS to measure and record the measurement position And number, place the detection hole drilling module at the detection point, start the generator, use a hand-held electric drill to drill the detection hole from the guide hole of the drilling template, drill to the detection depth requirement, a...
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Abstract
The invention discloses a faced rock-fill dam rolling density and humidity rapid detection method. According to the invention, a faced rock-fill dam detection point position is determined; detection point coordinate is recorded; a detection hole is drilled right at the detection point, until a detection layer depth is reached; and a nucleon density gauge probe is placed into the detection hole, such that rolling density and humidity are detected. According to the invention, from respects such as auxiliary tool design, field detection method, and detection processes, problems such as accurate drilling and detection depth are solved, such that a nucleon density / humidity detection method can be used in detection of faced rock-fill dam rolling density and humidity. A detection depth can reach 100cm. The method can also be used for detecting parameters such as dry density, compaction degree, and the like, such that high-intensity construction quality detection requirement of dam construction can be satisfied. According to the invention, an indirect geophysical detection technology is adopted. Only 1 or 2 small holes with depths reaching the rolling thickness are needed to be drilled on a detection surface, and density and humidity detections can be rapidly completed without digging. The method provided by the invention belongs to a non-destructive detection technology.
Description
technical field [0001] The invention relates to a detection method for the rolling density and humidity of a face rockfill dam, in particular to a rapid detection method for the rolling density and humidity of a face rockfill dam. Background technique [0002] Face rockfill dams generally adopt layered rockfill and layered rolling construction. Due to the deep thickness of each rolling, the large particle size of the rocks, and the fast construction speed, the materials used are rocks with uneven particle sizes and Therefore, the excavation and water injection test method is widely used in engineering to detect the rolling density of face rockfill dams. The detection speed is slow and the construction surface is occupied for a long time. As an important parameter of quality, the detection method of excavation and water injection cannot meet the requirements of high-intensity construction. Contents of the invention [0003] The technical problem to be solved by the present...
Claims
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Login to View More IPC IPC(8): G01N9/24G01N23/00E02B7/06
Inventor 王波杜松
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD