CN101975071A - Retractable guniting wall protector and construction method thereof - Google Patents
Retractable guniting wall protector and construction method thereof Download PDFInfo
- Publication number
- CN101975071A CN101975071A CN 201010515674 CN201010515674A CN101975071A CN 101975071 A CN101975071 A CN 101975071A CN 201010515674 CN201010515674 CN 201010515674 CN 201010515674 A CN201010515674 A CN 201010515674A CN 101975071 A CN101975071 A CN 101975071A
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- Prior art keywords
- fan
- shaped frame
- guniting
- whitewashing
- retractable
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- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a retractable guniting wall protector and a construction method thereof. The retractable guniting wall protector is composed of a retractable device and a connecting device, wherein the retractable device is composed of an elastic tubular fan-shaped frame and an elastic annular tube; the fan-shaped frame is composed of a cambered baffle as the top surface and planar baffles as the rest of three surfaces; the height of the fan-shaped frame is suitable for the thickness of the guniting wall; the annular tube is welded in the fan-shaped frame; and in the connecting device, one end of a connecting rod is provided with a lantern ring, and the other end of the connecting rod is connected to the bottom frame opening of the fan-shaped frame. The construction method comprises the following steps: before guniting, installing the retractable guniting wall protector in the position which easily cracks, fixing with an anchor rod through the lantern ring, and guniting to embed the retractable device in the concrete. The retractable guniting wall protector has certain continuous bearing strength and strong deformability, and can sufficiently release tunnel wall deformation, thereby preventing the tunnel wall from rupture due to failure of deformation.
Description
Technical field
The present invention relates to the suspension device of mine working, traffic tunnel, water conservancy culvert.
Background technology
In recent years, underground passage is used gunite more, and the wall of gunite is owing to be subjected to heavily stressed or mining influence often ftractures, cracking appears and after, the crack is progressively expanded, and causes diseases such as tunnel roof fall, supporting and protection structure destruction.Also there be not good methods aspect the control and prevention tunnel whitewashing wall cracking both at home and abroad at present.
Summary of the invention
The invention provides a kind of contractibility whitewashing breast wall apparatus, solve tunnel whitewashing wall cracking problem.
The structure of contractibility whitewashing breast wall apparatus of the present invention is: but form by compression apparatus and linkage two parts; Wherein:
But described compression apparatus is made of a fan-shaped frame of flexible tubulose and a flexible annulus pipe fitting; Fan-shaped frame is made up of the circular-arc baffle plate of end face and the plane baffle plate of its excess-three face; The height of fan-shaped frame (i.e. the height of two side shields) is suitable mutually with the thickness of whitewashing wall; The annulus pipe fitting is welded in the fan-shaped frame;
Described linkage is that the end at connecting rod is provided with the collar, and the effect of the collar is to connect fastening devices such as anchor pole, and the other end of connecting rod is connected fan-shaped frame underframe mouth.
In order to guarantee the elasticity of fan-shaped frame and annulus pipe fitting, four frames of fan-shaped frame are by good toughness, and the steel plate that deformability is strong processes; The annulus pipe fitting is the good steel annulus pipe fitting of deformability.
The job practices of contractibility whitewashing breast wall apparatus of the present invention is: before the whitewashing, it is installed in position easy to crack, and fixes with anchor pole by the collar, carry out spray operation again, but the compression apparatus spray is embedded in the concrete.
Operating principle of the present invention is: novel contractibility whitewashing breast wall apparatus is based on the thinking of carrying excessive " allow distortion ", elasticity by utilizing this annulus pipe fitting in being provided with and fan-shaped frame and large deformation obtain can the amount of contracting, make the concrete of whitewashing wall that certain stress release space be arranged, the wall of avoiding whitewashing does not have deformation space and causes cracking even fracture because of pressure is excessive.When work, two side shields are subjected to concrete extruding back and to internal strain, the annulus of two side shields extruding simultaneously pipe fitting makes it slowly discharge surrouding rock stress in the process of flattening, finally reach the stresses re-distribution of tunnel whitewashing wall, thereby guarantee the intact of tunnel whitewashing wall.
The advantage of contractibility whitewashing breast wall apparatus of the present invention is: this device has certain lasting bearing strength; Have stronger deformability, can fully discharge the wall distortion, avoid wall because of not being out of shape jackknifing; Device processing technology thereof of the present invention is simple and reliable, and physical and mechanical property is stable.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Marginal data: the fan-shaped frame of 1-elastic tubular, 2-elastic circular ring pipe fitting, 3-connecting rod, the 4-collar.
The specific embodiment
As shown in Figure 1, breast wall apparatus is made up of compression apparatus and linkage two parts but contractibility of the present invention is whitewashed, wherein:
But described compression apparatus is made of fan-shaped frame 1 of elastic tubular and elastic circular ring pipe fitting 2; Fan-shaped frame 1 is made up of the circular-arc baffle plate of end face and the plane baffle plate of its excess-three face; The height of fan-shaped frame 1 is suitable mutually with the thickness of whitewashing wall; Annulus pipe fitting 2 is welded in the fan-shaped frame 1.
Described linkage is that the end at connecting rod 3 is provided with the collar 4, and the other end of connecting rod 3 is connected fan-shaped frame 1 underframe mouth.
Four of fan-shaped frame frames are processed by good toughness, low-alloy high-strength Q 345 B steel plate that deformability is strong in the foregoing description; Above-mentioned annulus pipe fitting is the good low-alloy high-strength Q 345 B steel annulus pipe fitting of deformability.
Claims (3)
1. contractibility whitewashing breast wall apparatus is characterized in that, but it form by compression apparatus and linkage two parts, wherein:
But described compression apparatus is made of a fan-shaped frame of flexible tubulose and a flexible annulus pipe fitting; Fan-shaped frame is made up of the circular-arc baffle plate of end face and the plane baffle plate of its excess-three face; The height of fan-shaped frame is suitable mutually with the thickness of whitewashing wall; The annulus pipe fitting is welded in the fan-shaped frame;
Described linkage is that the end at connecting rod is provided with the collar, and the other end of connecting rod is connected fan-shaped frame underframe mouth.
2. contractibility as claimed in claim 1 whitewashing breast wall apparatus is characterized in that, four frames of fan-shaped frame are processed by good toughness, low-alloy high-strength Q 345 B steel plate that deformability is strong; Above-mentioned annulus pipe fitting is the good low-alloy high-strength Q 345 B steel annulus pipe fitting of deformability.
3. the job practices of a contractibility as claimed in claim 1 or 2 whitewashing breast wall apparatus, it is characterized in that, before the whitewashing, described contractibility whitewashing breast wall apparatus is installed in position easy to crack, and fix with anchor pole by the collar, carry out spray operation again, whitewash breast wall apparatus spray of contractibility is embedded in the concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105156747A CN101975071B (en) | 2010-10-16 | 2010-10-16 | Retractable guniting wall protector and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105156747A CN101975071B (en) | 2010-10-16 | 2010-10-16 | Retractable guniting wall protector and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101975071A true CN101975071A (en) | 2011-02-16 |
| CN101975071B CN101975071B (en) | 2012-07-18 |
Family
ID=43574977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105156747A Expired - Fee Related CN101975071B (en) | 2010-10-16 | 2010-10-16 | Retractable guniting wall protector and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101975071B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3127453A1 (en) * | 1981-07-11 | 1983-02-03 | Bauunternehmung E. Heitkamp Gmbh, 4690 Herne | Method of producing a roadway support in mining and tunnelling |
| JP2006225906A (en) * | 2005-02-16 | 2006-08-31 | Public Works Research Institute | Method for reinforcing tunnel lining concrete |
| CN101644160A (en) * | 2009-06-05 | 2010-02-10 | 中国科学院武汉岩土力学研究所 | High ground stress soft rock stress-relief construction method |
| CN101852083A (en) * | 2010-04-16 | 2010-10-06 | 中国科学院武汉岩土力学研究所 | Quick supporting method for large-deformation roadway easy to fall, break and loosen and apparatus thereof |
| CN201826856U (en) * | 2010-10-16 | 2011-05-11 | 山东科技大学 | Retractable gunite protecting wall device |
-
2010
- 2010-10-16 CN CN2010105156747A patent/CN101975071B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3127453A1 (en) * | 1981-07-11 | 1983-02-03 | Bauunternehmung E. Heitkamp Gmbh, 4690 Herne | Method of producing a roadway support in mining and tunnelling |
| JP2006225906A (en) * | 2005-02-16 | 2006-08-31 | Public Works Research Institute | Method for reinforcing tunnel lining concrete |
| CN101644160A (en) * | 2009-06-05 | 2010-02-10 | 中国科学院武汉岩土力学研究所 | High ground stress soft rock stress-relief construction method |
| CN101852083A (en) * | 2010-04-16 | 2010-10-06 | 中国科学院武汉岩土力学研究所 | Quick supporting method for large-deformation roadway easy to fall, break and loosen and apparatus thereof |
| CN201826856U (en) * | 2010-10-16 | 2011-05-11 | 山东科技大学 | Retractable gunite protecting wall device |
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| Publication number | Publication date |
|---|---|
| CN101975071B (en) | 2012-07-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120718 Termination date: 20171016 |