CN202900293U - L-shaped steel strip for treating rectangular roadway shoulder corner damage - Google Patents
L-shaped steel strip for treating rectangular roadway shoulder corner damage Download PDFInfo
- Publication number
- CN202900293U CN202900293U CN 201220518108 CN201220518108U CN202900293U CN 202900293 U CN202900293 U CN 202900293U CN 201220518108 CN201220518108 CN 201220518108 CN 201220518108 U CN201220518108 U CN 201220518108U CN 202900293 U CN202900293 U CN 202900293U
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- China
- Prior art keywords
- steel strip
- steel band
- roadway
- strip body
- shoulder corner
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model relates to an L-shaped steel strip for treating rectangular roadway shoulder corner damage. The L-shaped steel strip for treating rectangular the roadway shoulder corner damage comprises a steel strip body and anchor rod holes and is provided with the L-shaped steel strip body with a internally reverse circular corner. The steel strip is wide in the middle portion and narrow at two ends. An included angle of 110 degrees is formed in inner side faces. Corresponding positions at two ends of the steel strip body are respectively provided with one anchor rod hole. The steel strip body is made of common steel with Q235A material quality and anti-pulling intensity over 380 MPa in a rolling mode or a casting mode. According to specific surrounding rock structure and stress level, the thickness of the steel strip body is 10mm to 30mm and the width of the steel strip body is 300 mm to 600 mm. In the process of use, the steel strip body is tightly adhered to a rock face of a rectangular roadway shoulder corner, connected with an existing steel strip in an overlapped mode and fixed through anchor rods in an anchoring mode. The L-shaped steel strip for treating rectangular the roadway shoulder corner damage can prevent the rectangular roadway shoulder corner from being damaged and is high in intensity, large in rigidity and capable of enabling three-direction stress of rock on the shoulder corner to be recovered from two-direction stress, improving anti-shearing intensity, reducing stress concentration degree, being connected with other support of a roadway to form a whole and maintaining long-time stability of the roadway.
Description
Technical field
The utility model relates to a kind of tunnel fillet support apparatus, especially is applicable to a kind of L-type steel band of administering rectangular shaped roadways fillet destruction of mining shaft and drift supporting.
Background technology
Continuous increase along with the coal mining degree of depth, the supporting difficulty of deep-well dynamic pressure soft-rock tunnel significantly increases, and fillet is the most important thing of this type of roadway support, because fillet place stress is concentrated, tunnel more than 80% always takes the lead at the fillet place destroying, cause the roadway support global failure, often occur that top board is cut off at the fillet place and wholely sink or the accident such as inbreak.Fillet place, tunnel does not have special support apparatus at present, and existing bolt support is because constructional difficulties generally can be vacated at tunnel fillet place the zone more than the 200mm, and this zone is without any reinforcement measure; Even the top board steel band is extended to herein, not whole because top board steel band and two is helped steel band, can not play good constraint to surrouding rock deformation herein; Existing steel band strength and stiffness are less, are not suitable with the distortion of fillet place country rock, the phenomenon that the common steel band of on-the-spot often generation is torn at the fillet place.
The utility model content
The problem that does not have support apparatus in order to solve fillet place, present tunnel, the utility model provides a kind of L-type steel band that the rectangular shaped roadways fillet destroys of administering, prevent that the rectangular shaped roadways fillet is destroyed, intensity is high, and rigidity is large, can make fillet place rock recover three-dimensional stress state by two dimensional stress state, improve its shear strength, slow down stress concentration degree, be linked to be integral body with other supportings of tunnel, safeguard the long-term stability in tunnel.
The technical scheme that its technical problem that solves the utility model adopts is: the L-type steel band that this improvement rectangular shaped roadways fillet destroys comprises steel band body and anchor pole eyelet; The L-type steel band that this improvement rectangular shaped roadways fillet destroys is provided with the L shaped steel band body of inboard rounding, wide two ends are narrow in the middle of the steel band body, medial surface forms 110 ° of angles, steel band body two ends correspondence position runs through and is provided with the anchor pole eyelet, the steel band body by Q235A material, the tensile strength common iron more than 380MPa rolling or the casting form, its thickness and width are looked concrete surrounding rock structure and stress level, and thickness is 10mm～30mm, and width is 300mm～600mm.During use the steel band body is adjacent to rectangular shaped roadways fillet place scar, and original steel band overlap joint, just can with anchor rod anchored.
The beneficial effects of the utility model are: prevent that the rectangular shaped roadways fillet is destroyed, intensity is high, rigidity is large, can make fillet place rock recover three-dimensional stress state by two dimensional stress state, improve its shear strength, slow down stress concentration degree, be linked to be integral body with other supportings of tunnel, safeguard the long-term stability in tunnel.Calculate and field practice through theoretical, this L-type steel band and existing steel band are arranged at fillet place overlap joint, can be solved preferably the problem that fillet destroys.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is construction and installation schematic diagram of the present utility model.
1. steel band bodies among the figure, 2. anchor pole eyelet, 3. anchor pole, 4. sandstone, 5. rectangular shaped roadways.
The specific embodiment
In the drawings, the L-type steel band of this improvement rectangular shaped roadways fillet destruction comprises steel band body 1 and anchor pole eyelet 2; The L-type steel band that this improvement rectangular shaped roadways fillet destroys is provided with the L shaped steel band body 1 of inboard rounding, wide two ends are narrow in the middle of the steel band body 1, medial surface forms 110 ° of angles, steel band body 1 two ends correspondence position runs through and is provided with anchor pole eyelet 2, steel band body 1 by Q235A material, the tensile strength common iron more than 380MPa rolling or the casting form, its thickness and width are looked concrete surrounding rock structure and stress level, and thickness is at 10mm～30mm, and width is at 300mm～600mm.During use steel band body 1 is adjacent to rectangular shaped roadways 5 fillet place scars, and original steel band overlap joint, just can with anchor pole 3 anchorings.
Claims (3)
1. administer the L-type steel band that the rectangular shaped roadways fillet destroys for one kind, comprise steel band body (1) and anchor pole eyelet (2); It is characterized in that: the L-type steel band that this improvement rectangular shaped roadways fillet destroys is provided with the L shaped steel band body (1) of inboard rounding, wide two ends are narrow in the middle of the steel band body (1), medial surface forms 110 ° of angles, and steel band body (1) two ends correspondence position runs through and is provided with anchor pole eyelet (2).
2. a kind of L-type steel band that the rectangular shaped roadways fillet destroys of administering according to claim 1 is characterized in that: steel band body (1) is that the rolling or casting of common iron more than the 380MPa forms by Q235A material, tensile strength.
3. a kind of L-type steel band that the rectangular shaped roadways fillet destroys of administering according to claim 1, it is characterized in that: steel band body (1) thickness and width are looked concrete surrounding rock structure and stress level, and thickness is 10mm～30mm, and width is 300mm～600mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220518108 CN202900293U (en) | 2012-09-24 | 2012-09-24 | L-shaped steel strip for treating rectangular roadway shoulder corner damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220518108 CN202900293U (en) | 2012-09-24 | 2012-09-24 | L-shaped steel strip for treating rectangular roadway shoulder corner damage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900293U true CN202900293U (en) | 2013-04-24 |
Family
ID=48120976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220518108 Expired - Fee Related CN202900293U (en) | 2012-09-24 | 2012-09-24 | L-shaped steel strip for treating rectangular roadway shoulder corner damage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900293U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527232A (en) * | 2013-10-24 | 2014-01-22 | 中国矿业大学 | Overall support device for large dip angle coal roadway and usage method of overall support device for large dip angle coal roadway |
| CN107939426A (en) * | 2018-01-15 | 2018-04-20 | 河南理工大学 | A kind of three hole fillet pallets and application method for the anchoring of trapezoidal roadway bolt |
-
2012
- 2012-09-24 CN CN 201220518108 patent/CN202900293U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527232A (en) * | 2013-10-24 | 2014-01-22 | 中国矿业大学 | Overall support device for large dip angle coal roadway and usage method of overall support device for large dip angle coal roadway |
| CN103527232B (en) * | 2013-10-24 | 2016-01-27 | 中国矿业大学 | A kind of high inclination-angle coal road integer support device and using method thereof |
| CN107939426A (en) * | 2018-01-15 | 2018-04-20 | 河南理工大学 | A kind of three hole fillet pallets and application method for the anchoring of trapezoidal roadway bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20130924 |