Joint designing method of cushion course and transition layer of concrete faced rockfill dam

A technology of face rockfill dam and design method, which is applied in the direction of dam, barrage, barrage, etc., can solve the problems of design analysis index of transition layer and cushion layer, etc.

Inactive Publication Date: 2015-12-23
INST OF MECHANICS - CHINESE ACAD OF SCI +1
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when designing the cushion layer and the transition layer, the ratio of the permeability coefficient of the transition layer to the cushion layer has not been used as a design analysis index

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
  • Joint designing method of cushion course and transition layer of concrete faced rockfill dam
  • Joint designing method of cushion course and transition layer of concrete faced rockfill dam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Such as figure 2 As shown, the design method of cushion and transition layer of this face rockfill dam includes the following steps:

[0013] (1) The ratio of the permeability coefficient of the transition layer to the cushion layer is used as a parameter;

[0014] (2) Calculate the seepage slope and seepage velocity of the cushion and transition layer when the dam temporary flood relief cushion directly blocks water when the face plate is not constructed, and the seepage in the cushion layer and transition layer when the face plate or water stop is damaged during the operation period Slope and seepage velocity;

[0015] (3) According to the results of steps (1) and (2), the thickness of the soil layer of the dam body and the particle size distribution of the soil material are designed.

[0016] The invention takes the ratio of the permeability coefficient of the transition layer and the cushion layer as an important index of joint design, so that the design can achi...

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

The invention discloses a joint designing method of a cushion course and a transition layer of a concrete faced rockfill dam. The transition layer and the cushion course are jointly designed to realize the best using effect. The joint designing method of the cushion course and the transition layer of the concrete faced rockfill dam comprises the following steps: (1) adopting the osmotic coefficient ratio of the transition layer to the cushion course as a parameter; (2) before construction, calculating the seepage gradient and the seepage velocity of the cushion course and the transition layer when a dam temporary flood handling cushion course directly holds back water and calculating the seepage gradient and the seepage velocity of the cushion course and the transition layer when a servicing period concrete face or waterstop is damaged; (3) designing the soil thickness of the dam body and the grain size gradation of the soil material according to results of the steps (1) and (2).

Description

technical field [0001] The invention belongs to the technical field of face dam design in water conservancy and hydropower projects, and in particular relates to a design method for a cushion layer and a transition layer of a face rockfill dam, which is mainly used for structural design and earth material design of a face face rockfill dam. Background technique [0002] The face rockfill dam is a dam type with good technical and economical efficiency, and its design technology has been developed to the 250m level, and is developing to the 300m level. The failure of the face plate of high face rockfill dams and the destruction of water seals are high probability events. The second anti-seepage system formed by the cushion layer and the transition layer is the second line of defense to ensure the safety of the dam when the face plate and its water-stop system partially fail, and it is also used as a temporary flood relief when the face plate is not formed during the dam fillin...

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): E02B7/06
Inventor 吴梦喜杨家修湛正刚范福平姚元成蔡大咏
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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