Rock-fill object density measure system

A test system and rockfill body technology, applied in the field of rockfill dam density testing, can solve the problems of test result error, large cost, time-consuming, etc., and achieve the effect of high accuracy

Active Publication Date: 2015-02-11
HUBEI GEZHOUBA TESTING
View PDF2 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the pit measurement method is a traditional method for detecting the density of rockfill bodies. The result is accurate, but the detection efficiency is low, the representativeness is poor, time-consuming, laborious, expensive, and destructive. It is a point-to-surface method, which is difficult to be objective and comprehensive. reflect the overall quality of dam filling
Because the surface wave method has little influence on the dispersion curve due to density changes, and this method has a large detection erro

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rock-fill object density measure system
  • Rock-fill object density measure system
  • Rock-fill object density measure system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] Such as figure 1 Among them, a kind of rockfill body density test system, it comprises:

[0039] The bearing plate 4 placed on the surface of the rockfill body 7;

[0040] The counterweight 3 stacked on the pressure bearing plate 4;

[0041] An exciting hammer 2 for providing an exciting force located on one side of the pressure bearing plate 4;

[0042] The geophone 1 installed on the upper surface of the counterweight 3;

[0043] The wave detector 1 is electrically connected with the vibration frequency tester 5 .

[0044] Preferably, the pressure bearing plate 4 and the counterweight 3 are cylinders.

[0045] Preferably, the weight of the vibrating hammer 2 is 40-60 kg.

[0046] Preferably, the edge of the vibrating hammer 2 is 100-150 mm away from the edge of the pressure bearing plate 4 .

[0047] Preferably, the detector 1 is a velocity detector.

[0048] Preferably, 15-25mm of fine sand is provided between the bearing plate 4 and the rockfill body 7 .

[...

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

No PUM Login to view more

Abstract

A rock-fill object density measure system comprises a bearing plate placed on the surface of a rock-fill object, counterweight blocks stacked on the bearing plate, an excitation hammer disposed at one side of the bearing plate and used for providing excitation force, and a wave detector installed on the upper surface of the counterweight block and connected with a vibration frequency tester. The bearing plate and the counterweight blocks are cylinders. The weight of the excitation hammer is 40-60 Kg. By bonding the wave detector on the counterweight blocks, the vibration frequency f of a system composed of surface dam material, the bearing plate and the counterweight blocks can be tested through a vibration source, then the dry density of the rock-fill object is tested by performing a pit measure process, thus the relation curve between the system vibration frequency f and the rock-fill object dry density is established, and a linear analysis formula of the rock-fill object dry density is obtained. The provided rock-fill object density measure system has the advantages of time saving, labor saving, rapidness, no damage, high accuracy and the like.

Description

technical field [0001] The invention relates to the field of rockfill dam density testing in hydropower engineering construction, in particular to a rockfill body density testing system. Background technique [0002] The methods used to measure the density of rockfill bodies in rockfill dams in engineering mainly include test pit method, compaction settlement observation method, vibration roller installation accelerometer method, rolling parameter control method, surface wave method, nuclear density method and additional mass method Wait. Among them, the pit measurement method is a traditional method for detecting the density of rockfill bodies. The result is accurate, but the detection efficiency is low, the representativeness is poor, time-consuming, laborious, expensive, and destructive. It is a point-to-surface method, which is difficult to be objective and comprehensive. reflect the overall quality of dam filling. Because the surface wave method has little influence o...

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
no application Login to view more
IPC IPC(8): G01N9/24
Inventor 浮绍玮陈卫烈雷敬伟马双华
Owner HUBEI GEZHOUBA TESTING
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
PatSnap group products

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