Check patentability & draft patents in minutes with Patsnap Eureka AI!

A support structure and construction method for the bottom of a soft rock roadway

A support structure and roadway technology, which is applied in tunnels, earthwork drilling, tunnel lining, etc., can solve the problems of increasing the supportable area of ​​the combined structure and being unable to support large-section roadways, so as to control the bottom of the roadway and increase the The effect of large supportable area and good tunnel bottom

Active Publication Date: 2020-04-28
SHANGHAI INST OF TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a support structure and construction method for the bottom of soft rock roadway, which increases the supportable area of ​​the combined structure and solves the problem that the traditional steel arch structure cannot support large-section roadways

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
  • A support structure and construction method for the bottom of a soft rock roadway
  • A support structure and construction method for the bottom of a soft rock roadway
  • A support structure and construction method for the bottom of a soft rock roadway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] see figure 1 , figure 2 , Figure 8 and Figure 10 , a support structure for the bottom of a soft rock roadway, comprising: a frame part and a plurality of anchor rods 6 . The frame part includes: a first channel steel 1 , a second channel steel 2 , a first pressure relief piece 3 , a second pressure relief piece, several central connecting pieces 4 , and a third channel steel 5 . The first channel steel 1 and the second channel steel 2 are arranged in parallel. The central connecting piece 4 is arranged between the first channel steel 1 and the second channel steel 2 , and the central connecting piece 4 is located below the horizontal plane where the first channel steel 1 and the second channel steel 2 are located. A third channel steel 5 is connected between adjacent central connecting pieces 4 . The first pressure relief piece 3 includes a first horizontal section of channel steel 302, a first inclined channel steel 306, and a second inclined channel steel 307;...

Embodiment 2

[0065] This embodiment is further limited on the basis of Embodiment 1, and other parts are the same as or similar to Embodiment 1, and will not be repeated here.

[0066] see Image 6 and Figure 7 , the central connector 4 can also adopt the design as shown in the figure.

[0067] Further, see Figure 9 and Figure 10 A fourth channel steel 7 may also be provided between the first oblique channel steels 306 and inside the second oblique channel steels 307 . The opening direction of the fourth channel steel 7 is the same as the vertical direction of the tangent line of the connection point. After the two ends of the fourth channel steel 7 are respectively welded with closed cover plates, they are connected with the first inclined channel steel 306 and the second inclined channel steel 307. Connected by bolts. Through the arrangement of the fourth channel steel 7, the strength of the first pressure relief piece is further enhanced. A fourth channel steel 7 may also be ar...

Embodiment 3

[0069] This embodiment is further limited on the basis of Embodiment 1 and Embodiment 2, and the remaining parts are the same as or similar to Embodiment 1 and Embodiment 2, and will not be repeated here.

[0070] see Figure 11 , a construction method of a supporting structure of a soft rock roadway bottom, the method comprises the following steps:

[0071] S1: Clear and excavate the floor on the floor of the roadway and along the length direction of the roadway to make the floor curved, lay a layer of concrete on the excavated bottom arch, and pre-lay a layer of anchor mesh on the bottom along the length direction;

[0072] S2: laying the frame part;

[0073] S3: setting the anchor rod 6 at the bottom of the frame part;

[0074] S4: The support structure is filled with concrete so that the upper and lower surfaces of the channel steel form a circular arc-shaped anti-bottom arch along the length of the roadway, and finally a layer of anchor net is laid on the upper part, an...

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 supporting structure and construction method for floor heave of a soft rock roadway. The supporting structure for the floor heave of the soft rock roadway comprises a framework part and a plurality of anchor rods. The framework part comprises a first channel steel, a second channel steel, a first yielding piece, a second yielding piece, a plurality of center connecting pieces and a third channel steel. The first channel steel and the second channel steel are arranged in parallel. The center connecting pieces are arranged between the first channel steel and the secondchannel steel, and the center connecting pieces are located below the horizontal plane where the first channel steel and the second channel steel are located. The third channel steel is connected between the adjacent center connecting pieces. The first yielding piece comprises a first horizontal section channel steel, a first oblique channel steel and a second oblique channel steel; and the secondyielding piece comprises a second horizontal section channel steel, a third oblique channel steel and a fourth oblique channel steel. The anchor rods are arranged on the bottom side of the frameworkpart. By adopting center connecting plates, the first yielding piece and the second yielding piece in the supporting structure, a supportable area of a combined structure is increased, and the situation that the traditional steel arch structure cannot support the large-section roadway can be changed.

Description

technical field [0001] The invention belongs to the technical field of roadway support, and in particular relates to a support structure and a construction method for the bottom of a soft rock roadway. Background technique [0002] With the advancement of coal mining technology, the depth of coal mines in my country is gradually increasing. However, the geological conditions in deep coal mines are very complicated, which brings high risks to the normal mining of coal mines. The roadway is under the action of high ground stress. It is often very serious, which virtually increases the difficulty of roadway support. Even after the support is completed, the probability of later maintenance is also very high, which greatly increases the cost of coal mining. Expansive soft rock is one of them, and the deformation of expansive soft rock roadway is more obvious than that of other types of soft rock roadway because the base is larger. Therefore, the undercut phenomenon of expansive s...

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 Patents(China)
IPC IPC(8): E21D11/10E21D21/00
CPCE21D11/107E21D21/00
Inventor 马家昕仇圣华李相如张帅
Owner SHANGHAI INST OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com