Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Continuous beam pipeline force rib friction loss testing method based on karst cave underground river environment

A test method and cave technology, applied in force/torque/work measuring instruments, force sensors in the holes of stressed structures, tunnels, etc. Stability and reliability, the effect of improving backfill and stability and reliability

Inactive Publication Date: 2020-12-18
CHINA RAILWAY NO 5 ENG GRP +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the tunnel has to pass through the huge karst cave hall, and there is an underground river at the bottom, both the early construction and later operation bring high risks, such as the top of the karst cave falling off, and the bottom due to subsidence due to the underground river, etc.

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
  • Continuous beam pipeline force rib friction loss testing method based on karst cave underground river environment
  • Continuous beam pipeline force rib friction loss testing method based on karst cave underground river environment
  • Continuous beam pipeline force rib friction loss testing method based on karst cave underground river environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Such as Figure 1 to Figure 4 As shown, the present invention is based on a kind of embodiment of the method for testing the friction loss of continuous beam pipeline force tendons in the karst cave underground river environment. The environment includes a karst cave 1 and an underground river 2 at the bottom of the karst cave 1. The tunnel is section A of the tunnel, and the tunnel passing through the karst cave 1 is section B of the tunnel; the construction method includes the following steps:

[0034] S1: Excavate section A of the tunnel to penetrate the karst cave 1;

[0035] S2: Divert the underground river 2 so that the underground river 2 does not flow through the cave 1;

[0036] S3: backfill the karst cave 1 until it is backfilled to the foundation surface of the tunnel;

[0037] S4: Carry out protective treatment o...

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 continuous beam pipeline force rib friction loss testing method based on a karst cave and underground river environment. The method comprises the following steps that S1, a tunnel section A is excavated to penetrate through a karst cave; S2, an underground river is redirected; S3, the karst cave is backfilled to the tunnel foundation surface; S4, a cave wall is protected,and a plurality of anchor cables are constructed; S5, the karst cave is fully filled, and an anchor cable is connected with a backfill body; S6, the backfill body is excavated to form a tunnel section B; S7, piers and abutments are constructed on the tunnel section A; S8, a first section, a second section, a second section, a third section and a closure section are divided; S9, a supporting foundation of the tunnel section A is constructed; and S10, from the first section to the closure section, continuous beam construction is conducted according to the section sequence. The method has the advantages of being stable, reliable, high in safety and capable of preventing sedimentation.

Description

technical field [0001] The invention mainly relates to the tunnel construction technology in the karst cave underground river environment, in particular to a method for testing the friction loss of continuous beam pipeline force tendons based on the karst cave underground river environment. Background technique [0002] Yujingshan Tunnel is located in Weixin County, Yunnan Province, with a total length of 6306m and a double-track tunnel. On July 23, 2016, the karst cave was detected by advanced drilling at the face of the small mileage end of the Hengdong work area, and a giant karst cave hall and underground river were discovered after the reveal. The karst cave is about 230m long and 93m wide in a roughly rectangular shape. The top of the karst cave is in the shape of a dome. Underground river, the width of the river is 5-15m. The tunnel passes through the giant karst cave hall, the two sides of the giant karst cave hall are the tunnel A section, and the tunnel passing t...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E01D18/00E01D21/00E21D9/00E21D11/00G01L5/00E01D101/28
CPCE01D18/00E01D21/00E01D2101/28E21D9/00E21D11/003G01L5/0004G01L5/0028
Inventor 周浩陈彬黄光傅强黄泽
Owner CHINA RAILWAY NO 5 ENG GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com