CN2908784Y - Automatic unloading support device for expansion soft rock tunnel - Google Patents
Automatic unloading support device for expansion soft rock tunnel Download PDFInfo
- Publication number
- CN2908784Y CN2908784Y CN 200620020474 CN200620020474U CN2908784Y CN 2908784 Y CN2908784 Y CN 2908784Y CN 200620020474 CN200620020474 CN 200620020474 CN 200620020474 U CN200620020474 U CN 200620020474U CN 2908784 Y CN2908784 Y CN 2908784Y
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- support
- overall structure
- rock
- angle steel
- parts
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- Expired - Fee Related
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Abstract
The utility model relates to an expandable soft rock laneway self-unloading support and section of the support is an overall structure consisting of mine-used joist steel and angle steel by welding. The overall structure consists of four parts. A top camber of the overall structure is a support top beam with support legs on both sides of the overall structure, and a set sill at bottom of the overall structure. All of these parts are fixed and connected into one block through abutting plates welded on the section with bolts to form a ring-shaped closed support. In order to adapt to characteristics of expandable soft rock laneways, such as loose and broken wall rock, liability to demorphism, water softening, high expandability and large amount of deformation and so on, a ring-shaped closed metal support formed by combining a mine-used joist steel and angle steel is introduced; tip of the angle steel of the assembled support touches wall rock of laneway, under action of mine pressure, the low angle steel plays a role in cutting rock and unloading to prevent the support from going to rack and ruin.
Description
Affiliated field: the utility model relates to a kind of dilatancy soft-rock tunnel and unloads suspension device automatically.
Background technology: at present, mainly adopting bolt-spary supports, shed shoring both at home and abroad in the mine timbering field is main support technology.This support technology is bad to the supporting effect of dilatancy soft-rock tunnel, the problem of main cause and existence is: after 1, digging the tunnel in dilatancy soft rock rock stratum, the rapid weathering of roadway surrounding rock, softening, loose crushing, deflection are big, the large deformation of adopt that the conventional anchor rod anchored difficulty of bolt-spary supports technology, laneway molding are bad, whitewashing resilience height, prop can not suitable for surrounding rock.2, the dilatancy soft rock has strong dilatancy, various rigidity props are difficult to adapt to the huge stress that this strong expansion produced, must come out this huge stress release by the mode of unloading, what do not put again simultaneously is excessive, otherwise big distortion will appear in rock mass.
Summary of the invention: the purpose of this utility model provides a kind of simple, economic, practical property has the dilatancy soft-rock tunnel of good supporting effect to unload suspension device automatically to the dilatancy soft-rock tunnel by force.The purpose of this utility model realizes by following structure: the utility model is that a kind of dilatancy soft-rock tunnel unloads suspension device automatically, its cross section is the overall structure of mining i beam and angle steel welding, overall structure is made of four parts, the top arc is a set cap, both sides are the stent strut leg, the bottom is a foot-piece, and it is as a whole to adopt bolt to connect by the buttcover plate that welds on the section between each parts, forms a ring seal support.At dilatancy country rock of soft rock roadway loose crushing, easy-weathering, chance water softening, characteristic such as dilatancy is strong, deflection is big, be made into the metallic support of ring seal after adopting a kind of mining i beam and angle steel to make up, the country rock of tip in the tunnel that support sets up the back angle steel contacts, angle steel plays the effect of the broken rock unloading of cutting under the effect of mine pressure, guarantees that support is not destroyed.The inclined-plane of angle steel produces a supporting reaction to the country rock in tunnel simultaneously, produces the intensity that country rock has been reinforced in a support " arch " after adjacent two supporting reaction interacts in country rock, has improved the stress of support.Mining i beam and angle steel make up latter made metallic support and compare its enabling capabilities with traditional mining i beam metallic support and be significantly improved.The utility model does not need to use special support apparatus and material, and construction cost is low, effective, technology is simple.
Description of drawings:
Fig. 1 is the utility model overall structure figure
Fig. 2 is the butt joint sectional view
The specific embodiment:
The utility model as shown in Figure 1 is that a kind of dilatancy soft-rock tunnel unloads suspension device automatically, its cross section is the overall structure of mining i beam 1 and angle steel 2 welding, overall structure is made of four parts, the top arc is a set cap 3, both sides are stent strut leg 4, the bottom is a foot-piece 5, adopts bolt 7 fixedly connected as a whole by the buttcover plate 6 that welds on the section between each parts, forms a ring seal support.Between each support along the tunnel move towards with the round steel pull bar each support is coupled together.The effect of automatic cutting, broken rock, unloading is played to roadway surrounding rock in the tip of the angle steel 2 that mining i beam 1 welds together to country rock road, lane under action of underground, avoid support destroyed under action of underground.The pressure that the inclined-plane of the angle steel 2 that welds together with mining i beam 1 produces under action of underground roadway surrounding rock will form the reaction force on vertical and an inclined-plane.The reaction force of adjacent two supports interacts the back to a roadway surrounding rock generation stress " arch ", and this " arch " plays the reinforcing country rock and must act on.Latter made ring seal support is made up in the welding of mining i beam 1 and angle steel 2, and the intensity of support is compared its intensity with traditional mining i beam support raising, has realized the purpose of soft-rock tunnel simultaneous drifting.
Claims (2)
1, a kind of dilatancy soft-rock tunnel unloads suspension device automatically, it is characterized in that: its cross section is the overall structure of mining i beam (1) and angle steel (2) welding, overall structure is made of four parts, the top arc is set cap (3), both sides are stent strut leg (4), the bottom is foot-piece (5), adopts bolt (7) fixedly connected as a whole by the buttcover plate (6) that welds on the section between each parts, forms a ring seal support.
2, a kind of dilatancy soft-rock tunnel according to claim 1 unloads suspension device automatically, it is characterized in that: between each support along the tunnel move towards with the round steel pull bar each support is coupled together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620020474 CN2908784Y (en) | 2006-03-29 | 2006-03-29 | Automatic unloading support device for expansion soft rock tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620020474 CN2908784Y (en) | 2006-03-29 | 2006-03-29 | Automatic unloading support device for expansion soft rock tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2908784Y true CN2908784Y (en) | 2007-06-06 |
Family
ID=38127995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620020474 Expired - Fee Related CN2908784Y (en) | 2006-03-29 | 2006-03-29 | Automatic unloading support device for expansion soft rock tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2908784Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493011B (en) * | 2008-12-30 | 2011-12-07 | 中国科学院武汉岩土力学研究所 | Soft expansion type wall rock tunnel support method |
| CN102797486A (en) * | 2012-08-30 | 2012-11-28 | 中国矿业大学 | Fabricated grilling anti-invert method for treating pucking |
-
2006
- 2006-03-29 CN CN 200620020474 patent/CN2908784Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493011B (en) * | 2008-12-30 | 2011-12-07 | 中国科学院武汉岩土力学研究所 | Soft expansion type wall rock tunnel support method |
| CN102797486A (en) * | 2012-08-30 | 2012-11-28 | 中国矿业大学 | Fabricated grilling anti-invert method for treating pucking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |