Comprehensive test equipment for observing permeation and settlement of accumulated gravel soil
A comprehensive test and gravel soil technology, applied in the direction of permeability/surface area analysis, measuring device, suspension and porous material analysis, etc., can solve the problems of significant size effect, high cost, small size and other problems, and achieve easy function expansion , weaken the size effect, the effect of large overall size
Inactive Publication Date: 2015-08-05
XIANGTAN UNIV
View PDF5 Cites 13 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Since the maximum particle size of accumulated gravel soil is generally 60mm-80mm, while the TST-70 permeameter water cylinder is only 100mm×400mm, its size is small, and the size effect is significant, which makes it impossible to objectively and accurately reflect the infiltration of debris flow soil and rock bodies coefficient
If a three-axis permeameter is used for measurement, it is not suitable for promotion due to its high cost, complicated operation, and high requirements for operators.
In addition, the above-mentioned measuring instruments are mainly metal cylinders with a single structure and function. They can only test the saturated permeability coefficient of the soil through the water supply of the Martens bottle, and cannot simulate artificial rainfall and observe the moisture content of unsaturated gravel soil under different rain intensities. Infiltration process, and it is impossible to measure the settlement and deformation of soil and rock during rainwater infiltration
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, a comprehensive test equipment for observing the seepage settlement of piled gravel soil includes a comprehensive observation system for seepage settlement and a constant pressure circulation water supply system. The comprehensive observation system for seepage settlement includes a support frame 14 on which There is a cylinder 10, and the cylinder 10 is made of a transparent material. A digital display vernier caliper 1 is installed on the upper cover of the cylinder 10, and a foggy precipitation nozzle 4 is installed on the inside of the upper cover of the cylinder 10. The upper end of the mobile porous permeable plate 9 is connected with the bottom end of the digital display vernier caliper 1 to measure the depth, and the lower end is vertically connected with the mobile porous permeable plate 9. A fixed porous permeable plate 11 is installed in the lower part of the cylinder 10. There is a leakage hole...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more PUM
| Property | Measurement | Unit |
|---|---|---|
| height | aaaaa | aaaaa |
| height | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Login to view more
Abstract
The invention discloses comprehensive test equipment for observing permeation and settlement of accumulated gravel soil. The test equipment comprises a permeation and settlement integrated generation observation system and a constant pressure circulating water supply system. The equipment disclosed by the invention has the following technical effects that 1, artificial rainfall is simulated, and the moisture infiltration condition of unsaturated gravel soil under different rainfall intensities is directly observed; 2, the settlement deformation of the soil body in a natural state and under the simulated rainfall condition can be measured; 3, because the equipment is large in overall size, the grading features of the natural soil can be remained to the greatest degree, and a size effect is weakened; and 4, the equipment is accurate in testing, easy to operate and economical in construction cost, the overall structure is subjected to modular combination, and function extension is conveniently realized.
Description
technical field [0001] The invention relates to a comprehensive test equipment for observing seepage settlement. Background technique [0002] At present, the instrument commonly used indoors to measure the permeability coefficient of soil and rock bodies in China is the TST-70 type permeameter. Geotechnical Test Regulations People's Republic of China Industry Standard Compilation Group. SL237-1999 Geotechnical Test Regulations [S]. Beijing: China Water Conservancy and Hydropower Press, 1999. It stipulates that in order to reduce the size effect, the inner diameter of the cylinder permeameter should be larger than the largest particle size of the sample. 10 times the diameter. Qiu Xiande et al. Qiu Xiande, Yan Zongling, Liu Li, et al. Effect of particle size characteristics of rockfill body on its permeability. [J]. Rock and Soil Mechanics, 2004, 25(6): 950-954. Requirements for simulated samples The diameter should not be less than 5 to 6 times the maximum diameter of the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more Application Information
Patent Timeline
Login to view more Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 董辉罗潇史超李智飞
Owner XIANGTAN UNIV
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap