CN205477671U - Double -deck U shaped steel yieldable support - Google Patents
Double -deck U shaped steel yieldable support Download PDFInfo
- Publication number
- CN205477671U CN205477671U CN201620229214.0U CN201620229214U CN205477671U CN 205477671 U CN205477671 U CN 205477671U CN 201620229214 U CN201620229214 U CN 201620229214U CN 205477671 U CN205477671 U CN 205477671U
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- shaped steel
- cushion block
- double
- elastic cushion
- shaped
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Abstract
The utility model relates to a double -deck U shaped steel yieldable support, include: two U shaped steel supports and seven U type elastic cushion block, wherein, two U shaped steel supports pass through the welding of U type elastic cushion block together. When pressure on the country rock acts on the support was greater than an outer U shaped steel support bearing capacity, an outer U shaped steel support took place to be out of shape, and pressure of surrounding rock has been released in the deformation of country rock, and through U type elastic cushion block's deformation shrinkage, the effect is at the pressure greatly reduced of the 2nd U shaped steel support of inlayer to maintain the stability of country rock, guarantee the normal use in tunnel. This double -deck U shaped steel yieldable support has the good mobility that contracts, and simple structure can obtain the ideal effect of strutting, and the project benefit is showing.
Description
Technical field
This utility model relates to a kind of double-deck U-shaped steel collapsible timbering, and this support can be widely used in the supporting of underground engineering, is particularly suited for the supporting of mine working and pit shaft.
Background technology
The great advantage of U-shaped steel collapsible timbering is when shoulder bed effects pressure on support reaches certain value, support produces contracting dynamic deformation, the dynamic result of contracting makes shoulder bed effects pressure on support decline, it is to avoid owing to the pressure of country rock causes the destruction of support more than rack bearing power.On the other hand, support yieldable the most also needs to keep certain bearing capacity, to maintain the stability of country rock having, it is ensured that the normal use in tunnel.But when back pressure is bigger, the moment of flexure over-limit condition that arched girder intermediate cross-section is born, common collapsible timbering is difficult to bear pressure from surrounding rock, always causes support to destroy.Therefore a kind of U-shaped steel collapsible timbering is designed most important.
Summary of the invention
The problem existed for above-mentioned technology, the purpose of this utility model is to provide a kind of collapsible timbering that can give full play to support self bearing capacity, improves supporting quality.
Double-deck U-shaped steel collapsible timbering, it is by the first U-shaped steel, U-shaped elastic cushion block, card cable and the second U-shaped steel composition, it is characterized in that two U-shaped steel brackets are welded together by U-shaped elastic cushion block, when shoulder bed effects pressure on support is more than outer layer first U-shaped steel bracket bearing capacity, the U-shaped steel bracket of outer layer first deforms, the deformation of country rock releases pressure from surrounding rock, deformation retract by U-shaped elastic cushion block, the pressure acting on the U-shaped steel bracket of internal layer second is substantially reduced, thus maintains the stability of country rock, it is ensured that the normal use in tunnel.
As improvement, the first U-shaped steel uses 29U shaped steel.
As improvement, the second U-shaped steel uses 36U shaped steel.
As improvement, U-shaped elastic cushion block uses maximum gauge 100mm in the middle of Q215 carbon structural steels, cushion block.
The beneficial effects of the utility model are: double-deck U-shaped steel collapsible timbering has two-layer support system, two U-shaped steel brackets are welded together by U-shaped elastic cushion block, when the first U-shaped steel cannot meet supporting intensity generation destruction, first U-shaped steel bracket deforms, the deformation of country rock releases pressure from surrounding rock, and by the deformation retract of U-shaped elastic cushion block, the pressure acting on the U-shaped steel bracket of internal layer second is substantially reduced, thus maintain the stability of country rock, it is ensured that the normal use in tunnel.This utility model has the good contracting property moved, simple in construction, can obtain preferable supporting effect, therefore can be widely used in the supporting of underground engineering, is particularly suited for great burying and the supporting of heavily stressed coal mine roadway, and project benefit is notable.
Accompanying drawing explanation
Fig. 1 is double-deck U-shaped steel collapsible timbering structural representation.
Fig. 2 is the A-A cross section view of Fig. 1.
Reference: (1) first U-shaped steel；(2) U-shaped elastic cushion block；(3) card cable；(4) second U-shaped steel.
Detailed description of the invention
See Fig. 1, Fig. 2, be described as follows: double-deck U-shaped steel collapsible timbering is identical with the construction technology of common u-shaped steel bracket, the first U-shaped steel bracket is first installed, places U-shaped elastic cushion block, the second U-shaped steel bracket is installed, finally completes the welding of U-shaped elastic cushion block.
As shown in Figure 1, double-deck U-shaped steel collapsible timbering is by the first U-shaped steel (1), U-shaped elastic cushion block (2), card cable (3) and the second U-shaped steel (4) composition, it is characterized in that: two U-shaped steel brackets are welded together by U-shaped elastic cushion block, when shoulder bed effects pressure on support is more than outer layer first U-shaped steel bracket bearing capacity, the U-shaped steel bracket of outer layer first deforms, the deformation of country rock releases pressure from surrounding rock, deformation retract by U-shaped elastic cushion block, the pressure acting on the U-shaped steel bracket of internal layer second is substantially reduced, thus maintain the stability of country rock, ensure the normal use in tunnel.
As shown in Figure 2, U-shaped elastic cushion block uses maximum gauge 100mm in the middle of Q215 carbon structural steels, cushion block.
As improvement, the first U-shaped steel uses 29U shaped steel.
As improvement, the second U-shaped steel uses 36U shaped steel.
As improvement, U-shaped elastic cushion block uses maximum gauge 100mm in the middle of Q215 carbon structural steels, cushion block.
In order to ensure the stability of support, the upper surface of U-shaped elastic cushion block to coincide with the first U-shaped steel lower surface, and the lower surface of U-shaped elastic cushion block to coincide with the upper surface of the second U-shaped steel.And guarantee U-shaped elastic cushion block and the weld strength of U-shaped steel bracket, it is ensured that the supporting intensity of support.
Claims (4)
- The most double-deck U-shaped steel collapsible timbering, it is by the first U-shaped steel (1), U-shaped elastic cushion block (2), card cable (3) and the second U-shaped steel (4) composition, it is characterized in that: two U-shaped steel brackets are welded together by U-shaped elastic cushion block, when shoulder bed effects pressure on support is more than outer layer first U-shaped steel bracket bearing capacity, the U-shaped steel bracket of outer layer first deforms, the deformation of country rock releases pressure from surrounding rock, deformation retract by U-shaped elastic cushion block, the pressure acting on the U-shaped steel bracket of internal layer second is substantially reduced, thus maintain the stability of country rock, ensure the normal use in tunnel.
- 2. according to U-shaped steel collapsible timbering double-deck described in claim 1, it is characterized in that: the first U-shaped steel (1) uses 29U shaped steel.
- 3. according to U-shaped steel collapsible timbering double-deck described in claim 1, it is characterized in that: the second U-shaped steel (4) uses 36U shaped steel.
- 4. according to U-shaped steel collapsible timbering double-deck described in claim 1, it is characterized in that: U-shaped elastic cushion block (2) uses maximum gauge 100mm in the middle of Q215 carbon structural steels, cushion block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620229214.0U CN205477671U (en) | 2016-03-23 | 2016-03-23 | Double -deck U shaped steel yieldable support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620229214.0U CN205477671U (en) | 2016-03-23 | 2016-03-23 | Double -deck U shaped steel yieldable support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205477671U true CN205477671U (en) | 2016-08-17 |
Family
ID=56652462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620229214.0U Expired - Fee Related CN205477671U (en) | 2016-03-23 | 2016-03-23 | Double -deck U shaped steel yieldable support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205477671U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060806A (en) * | 2017-03-29 | 2017-08-18 | 安徽理工大学 | It is a kind of can active firm wall U-shaped steel bracket |
-
2016
- 2016-03-23 CN CN201620229214.0U patent/CN205477671U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060806A (en) * | 2017-03-29 | 2017-08-18 | 安徽理工大学 | It is a kind of can active firm wall U-shaped steel bracket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160817 Termination date: 20170323 |