CN201526327U - U-shaped full-face steel support - Google Patents
U-shaped full-face steel support Download PDFInfo
- Publication number
- CN201526327U CN201526327U CN2009202579812U CN200920257981U CN201526327U CN 201526327 U CN201526327 U CN 201526327U CN 2009202579812 U CN2009202579812 U CN 2009202579812U CN 200920257981 U CN200920257981 U CN 200920257981U CN 201526327 U CN201526327 U CN 201526327U
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- Prior art keywords
- arch
- roadway
- crown
- rack leg
- radius
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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 a U-shaped full-face steel support, which is formed by an arch (1) and an inverted arch (2) with three sections mutually overlapped. The U-shaped full-face steel support is characterized by adding roadway side support legs (3) between the arch (1) and the inverted arch (2), namely, two ends of the arch (1) are in overlapping joint with one end of each roadway side support leg (3), and two ends of the inverted arch (2) with three sections mutually overlapped are in overlapping joint with the middle portion of each roadway side support leg (3) via an overlap-joint component (4). The U-shaped full-face steel support has the advantage that in supporting a roadway and tunneling construction with uneven peripheral pressure, the first pressed arch partially transfers pressure onto the two roadway side support legs so as to share the pressure from the top portion of a roadway, thereby maintaining an original shape of the roadway, increasing construction quality, and prolonging roadway maintenance period.
Description
One, technical field
The new novel supporting frame that relates to coal road and soft rock tunnel engineering of this practicality.
Two, technical background
Along with the continuous extension of the pit mining degree of depth, mine pressure is increasing.In some tunnel or in the construction of tunnel, top group pressure is big, pucking is serious owing to exist, so that have influence on workmanship and construction speed, require us must take the rational and effective support apparatus that supporting is carried out in this class tunnel thus, slow down tunnel and tunnel because of compressive deformation destroys, drum is helped, the drum end, safeguard that the digging space guarantees workmanship.At present, the circular or oval full section steel bracket of multi-section type is often adopted in the supporting of colliery underworkings, and they can effectively carry out supporting to tunnel and tunnel bottom, limit preferably this class engineering the pucking amount, prolonged the maintenance cycle of this class engineering.But it only is suitable for by relatively more uniform roadway of pressurized around the support engineering and construction of tunnel.For around the roadway of pressurized inequality and construction of tunnel when carrying out supporting, because support apparatus is executed suffered rib to pressure around it together, thereby cause the support apparatus part to begin carrying, other parts then are in free state, support also is under the stressed irregular state, its internal stent stress distribution complexity, cause stress raisers, finally gently then support sharply be out of shape with the tunnel, heavy then artificial damage location in weak area stress raiser of support or support manufacture process occur fractureing destructions, distortion is reversed and has been lost support action.
Three, utility model technology contents
The utility model at around the roadway and the construction of tunnel of pressurized inequality, provide the shape of a hoof full section steel bracket.
In order to realize described purpose, at around after the stress and process analysis procedure analysis of the roadway of pressurized inequality and construction of tunnel, in conjunction with supporting theory, effect and the advantage of various support apparatus, by optimizing and combination.Design can to around the lithology of pressurized inequality be the roadway in soft rock or coal seam and the full section steel bracket of the shape of a hoof that construction of tunnel is carried out effective support.It is according to following technical scheme.The full section steel bracket of the shape of a hoof is made up of the end arch that crown and three joints overlap mutually, it is characterized in that between crown and end arch, increasing again lane group rack leg, the two ends that are crown help an end of rack leg to be connected with the lane, and the two ends of the ends arch of three joint overlap joints are connected by overlapping member and lane group support midleg.
Described lane group rack leg has a bit of circular arc being connected the end with crown.
The arch radius of curvature maximum in the middle of it is encircleed at the described end, and the radius of curvature of arch both sides, end arch is taken second place, and the circular arc radius of curvature of lane group rack leg end is taken second place crown radius of curvature minimum again.
Superiority of the present utility model be for around the roadway of pressurized inequality and construction of tunnel when carrying out supporting, at first the crown of pressurized is married again pressure portion on two lanes group rack leg, born jointly from the tunnel top pressure, safeguarded the tunnel original shape, improved workmanship, prolonged the roadway maintenance cycle.
Four, description of drawings
Accompanying drawing is a structural representation of the present utility model.
Five, the specific embodiment:
The structure of the full section steel bracket of the shape of a hoof sees also accompanying drawing.It is made up of the end arch 2 that crown 1 and three joints overlap mutually, it is characterized in that between crown 1 and end arch 2, having increased again lane group rack leg 3, be the two ends of crown 1 and the end overlap joint of lane group rack leg 3, the middle part overlap joint of rack leg 3 is helped at the two ends of the end arch 2 that three joints overlap mutually by overlap joint member 4 and lane.
Described lane helps rack leg 3 with crown 1 overlap joint end a bit of circular arc being arranged.
The radius of curvature maximum of described end arch 2 arch in the middle of it, the radius of curvature that 2 both sides arch are encircleed at the end is taken second place, and the radius of curvature of lane group rack leg 3 overlap joint end circular arcs is taken second place the radius of curvature minimum of crown 1 again.
Its design key position of the full section steel bracket of the shape of a hoof is crown 1 and end arch 2, the length of crown 1 and angle are by span length and height dimension decision, consider the following Zha Jiao and the lap position of rack leg 3 simultaneously, lap position should be considered in the position that is subjected to lateral pressure less than extruding force.End arch 2 is made up of three joint arch, and the angle of three joint arch and length should rationally be distributed by bottom, tunnel stressing conditions, totally be in the middle of long, the angle of arch and radius more greatly, both sides arch and rack leg 3 overlap effectively like this, angle is reasonable, radius is little.
The full section steel bracket of the shape of a hoof uses in the lane under my somewhere, ore deposit work plane, and this drift section top pressure is big, lateral pressure is unbalanced, base plate is easily heaved.Thus after, designed the full section steel bracket of the shape of a hoof with No. 36 U section steel manufactures specially for this tunnel to this tunnel each several part force analysis.Its support crown 1 radian is 2.024, and arc length is 5000.2mm, moves 500mm on crown 1 end as the lap position of rack leg 3 with crown 1.The straightway of rack leg 3 overlaps mutually with the straightway that 2 side arch are encircleed at the end, and with become 39.5 degree corner cut mutually at the bottom of the side between the arch 2.Arch 2 long (not containing the 500mm straightway of overlap joint mutually) 2235.53mm, radian are 1.378 at the bottom of the side; The long 4077mm of middle arch, radian are 1.186.When roadway construction, set up crown 1 and rack leg 3 earlier, in time supporting is carried out in the tunnel; Keep certain distance to act as a planted agent at driving face before just subsequently and install end arch 2, thereby the supporting of the full section steel bracket of the whole shape of a hoof has just been finished in the tunnel, all supports are connected by overlap joint member 4 and are integral body, have further strengthened the support capacity of support.
Claims (3)
1. the full section steel bracket of the shape of a hoof, form by the end arch (2) that crown (1) and three joints overlap mutually, it is characterized in that between crown (1) and end arch (2), increasing again lane group rack leg (3), be the two ends of crown (1) and the end overlap joint of lane group's rack leg (3), the middle part overlap joint of rack leg (3) is helped at the two ends of the end arch (2) that three joints overlap mutually by overlap joint member (4) and lane.
2. the full section steel bracket of the shape of a hoof as claimed in claim 1 is characterized in that lane group's rack leg (3) is having a bit of circular arc with crown (1) overlap joint end.
3. the full section steel bracket of the shape of a hoof as claimed in claim 1, the radius of curvature maximum that it is characterized in that its middle arch of described end arch (2), the radius of curvature of arch (2) both sides, end arch is taken second place, the radius of curvature of lane group's rack leg (3) overlap joint end circular arc is taken second place the radius of curvature minimum of crown (1) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202579812U CN201526327U (en) | 2009-11-10 | 2009-11-10 | U-shaped full-face steel support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202579812U CN201526327U (en) | 2009-11-10 | 2009-11-10 | U-shaped full-face steel support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201526327U true CN201526327U (en) | 2010-07-14 |
Family
ID=42517615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202579812U Expired - Fee Related CN201526327U (en) | 2009-11-10 | 2009-11-10 | U-shaped full-face steel support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201526327U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863611A (en) * | 2015-05-08 | 2015-08-26 | 黄河勘测规划设计有限公司 | Method for designing cross-section structure of open-channel flow water-conveyance tunnel |
| CN108087006A (en) * | 2017-11-21 | 2018-05-29 | 上海骐钛机械有限公司 | A kind of support of tunnel structure with locating alarming |
| CN113790070A (en) * | 2021-08-12 | 2021-12-14 | 新汶矿业集团有限责任公司 | Variable-rigidity yielding steel shed support for rock burst mine and implementation method |
| CN113818913A (en) * | 2021-08-12 | 2021-12-21 | 新汶矿业集团有限责任公司 | MU steel shed support and method for rock burst mine roadway support |
-
2009
- 2009-11-10 CN CN2009202579812U patent/CN201526327U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863611A (en) * | 2015-05-08 | 2015-08-26 | 黄河勘测规划设计有限公司 | Method for designing cross-section structure of open-channel flow water-conveyance tunnel |
| CN108087006A (en) * | 2017-11-21 | 2018-05-29 | 上海骐钛机械有限公司 | A kind of support of tunnel structure with locating alarming |
| CN113790070A (en) * | 2021-08-12 | 2021-12-14 | 新汶矿业集团有限责任公司 | Variable-rigidity yielding steel shed support for rock burst mine and implementation method |
| CN113818913A (en) * | 2021-08-12 | 2021-12-21 | 新汶矿业集团有限责任公司 | MU steel shed support and method for rock burst mine roadway support |
| CN113818913B (en) * | 2021-08-12 | 2023-09-19 | 新汶矿业集团有限责任公司 | MU steel shed support and method for rock burst mine roadway support |
| CN113790070B (en) * | 2021-08-12 | 2023-11-24 | 新汶矿业集团有限责任公司 | Variable-rigidity yielding steel shed support for rock burst mine and implementation method |
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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: 20100714 Termination date: 20101110 |