CN104265329B - For steel pipe truss grouting and reinforcing and the supporting and protection structure of heavily stressed weak broken wall rock - Google Patents
For steel pipe truss grouting and reinforcing and the supporting and protection structure of heavily stressed weak broken wall rock Download PDFInfo
- Publication number
- CN104265329B CN104265329B CN201410511469.1A CN201410511469A CN104265329B CN 104265329 B CN104265329 B CN 104265329B CN 201410511469 A CN201410511469 A CN 201410511469A CN 104265329 B CN104265329 B CN 104265329B
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- China
- Prior art keywords
- interface
- bar
- way joint
- supporting
- quadra
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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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- 239000011435 rock Substances 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 27
- 239000010959 steel Substances 0.000 title claims abstract description 27
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 17
- 108091028732 Concatemer Proteins 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a kind of steel pipe truss grouting and reinforcing for heavily stressed weak broken wall rock and supporting and protection structure, comprise five-way joint, push rod, side bar, shoulder bar and grouted anchor bar, described five-way joint comprises five interfaces interconnected, push rod, side bar, shoulder bar and grouted anchor bar are arranged on five interfaces and also jointly form a support centered by five-way joint, the quadra structure that to be joined together to form with four five-way joints by four above-mentioned supports be summit, each quadra is respectively equipped with a quadra identical with its structure along the axis direction both sides of five-way joint first interface, the concatemer structure based on single quadra is joined together to form by shoulder bar between two adjacent quadras.The present invention has that initial supporting is large, supporting intensity is high, good integrity, supporting control top area are large, protect the advantage that table ability is strong, easy construction is simple and safe and reliable, can increase substantially loose wall rock stability.
Description
Technical field
The present invention relates to underground mining field, particularly a kind of steel pipe truss grouting and reinforcing for heavily stressed weak broken wall rock and supporting and protection structure.
Background technology
It is more that underground mining exploits the goaf caused in earlier stage; and going deep into mining environment and also can become increasingly complex along with mine; usually incompact fractured surrounding rock body can be met in the tunnel dug; the overall performance of this loosening country rock body is poor; supporting capacity is limited; being subject to the effect of high-ground stress and Disturbance stress, just may causing with pick with emitting or large deformation phenomenon.
At present, when carrying out driving in the tunnel of loosening country rock body and safeguard, general employing stake wedge, the advanced anti-end, encircles fixing anchor bar and pipe canopy and pre-pouring grout and carries out advance support, these technology are at the driving of heavily stressed fragmented rock body, safeguard and ensure that the construction safety aspect of workman has played important function, but the complicated operation of these technology, the shortcomings such as the little and cost of the scope of application is larger, it is made to be difficult to apply in the zone of fracture of colliery widely, and can owing to making greatly and easily wall rock destabilization or roof fall by broken-rock pressure after driving with supporting, particularly in heavily stressed fragmented rock body, as arranged arch fixing anchor bar of the anti-end and cable bolting, because anchored end can not live rock mass stability by anchor, the as easy as rolling off a log generation causing a large amount of pucking.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides that a kind of supporting intensity is high, the steel pipe truss grouting and reinforcing for heavily stressed weak broken wall rock that good integrity, easy construction are simple and safe and reliable and supporting and protection structure.
The technical scheme that the present invention solves the problem is: a kind of steel pipe truss grouting and reinforcing for heavily stressed weak broken wall rock and supporting and protection structure, comprise five-way joint, push rod, side bar, shoulder bar and grouted anchor bar, described five-way joint comprises first interface, second interface, 3rd interface, 4th interface and the 5th interface and five interfaces interconnect each other, wherein first interface, second interface is positioned on same axis, 3rd interface, orthogonal and the 3rd interface of 4th interface, 4th interface place plane orthogonal is in the axis of first interface, described push rod is arranged on the 3rd interface of five-way joint, side bar is arranged on the 4th interface of five-way joint, the first interface of five-way joint, second interface is separately installed with a shoulder bar, one end of grouted anchor bar is arranged on the 5th interface of five-way joint, the other end is anchored in roadway surrounding rock, described push rod, grouted anchor bar, shoulder bar and side bar are hollow steel tube, described five-way joint and the side bar be arranged on five-way joint, push rod, shoulder bar, grouted anchor bar forms a support centered by five-way joint jointly, be square four above-mentioned supports arrangement by push rod and the side bar quadra structure that to be joined together to form with four five-way joints be summit, grouted anchor bar on four five-way joints is all towards the outside of quadra, each quadra is respectively equipped with a quadra identical with its structure along the axis direction both sides of five-way joint first interface, the concatemer structure based on single quadra is joined together to form by shoulder bar between two adjacent quadras.
In the above-mentioned steel pipe truss grouting and reinforcing for heavily stressed weak broken wall rock and supporting and protection structure, internal thread is provided with in five interfaces of described five-way joint, the two ends of described push rod, shoulder bar, side bar are equipped with the external screw thread mated with described internal thread, and one end of described grouted anchor bar is provided with the external screw thread mated with described internal thread.
In the above-mentioned steel pipe truss grouting and reinforcing for heavily stressed weak broken wall rock and supporting and protection structure, described grouted anchor bar is arranged with backing plate and nut, the external surface of described grouted anchor bar is provided with the external screw thread mated with the internal thread of described nut.
In the above-mentioned steel pipe truss grouting and reinforcing for heavily stressed weak broken wall rock and supporting and protection structure, described backing plate is inner concave shape backing plate.
In the above-mentioned steel pipe truss grouting and reinforcing for heavily stressed weak broken wall rock and supporting and protection structure, in described five-way joint, the 5th interface, the 3rd interface, the 4th interface are positioned at same plane and the angle of the 5th interface and the 3rd interface, the 4th interface is 135 °.
Compared with prior art, the present invention had both played the anchor note effect of hollow steel tube slip casting and bolt grouting, had played again the monolithic stability effect of hollow steel tube truss.Concrete manifestation is as follows:
The first, initially supporting power is large, effectively can improve the loose stability that there is country rock.The present invention adopts high strength drill steel pipe to form truss-like grouting and reinforcing and supporting and protection structure, when supporting, can form rapidly strong tower structure, can effectively stop country rock to loosen further; Anchor pole subsequently and grouting and reinforcing substantially increase the globality of fragmented rock body, improve the load-carrying properties of rock mass;
The second, integrality performance of the structure is good, and anti-pressure ability is strong.The present invention adopts the truss-like of frame construction, and its main component is hollow steel tube and grouted anchor bar that intensity is higher, after carrying out slip casting, its intensity also can improve further, the trussed construction not only good integrity that this high-intensity hollow steel pipe and grouted anchor bar are formed, and the ability of opposing pressure from surrounding rock is very strong;
Three, structure is simple, easy for installation.Main component of the present invention is hollow steel tube and grouted anchor bar, during assembling, just hollow steel tube and grouted anchor bar can be coupled together by means of only five-way joint, installs and is easier to grasp;
Four, adaptable.The shape of push rod of the present invention designs according to tunnel contours profiles, not only be adapted to rectangular shaped roadways, also circular tunnel of waiting other shape is adapted to, and each support all adopts hollow steel tube and grouted anchor bar to be that main body couples together, easy construction, is suitable for the location of various complex geologic conditions.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of five-way joint in Fig. 1.
Fig. 3 is the structural representation of grouted anchor bar in Fig. 1.
Fig. 4 is push rod and the structural representation helping bar in Fig. 1.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated.
The all components of the present invention are high strength, high rigidity steel material, and Components Shape, size all make according to tunnel contours profiles, only introduce with rectangular shaped roadways in this example:
As Fig. 1, shown in Fig. 2, the present invention includes five-way joint 1, push rod 2, side bar 3, shoulder bar 4 and grouted anchor bar 5, described five-way joint 1 comprises first interface 1-1, second interface 1-2, 3rd interface 1-3, 4th interface 1-4 and the 5th interface 1-5 and five interfaces interconnect each other, wherein first interface 1-1, second interface 1-2 is positioned on same axis, the 5th interface 1-5, 3rd interface 1-3, 4th interface 1-4 is positioned at same plane, the 3rd interface 1-3 in this plane, 4th interface 1-4 is orthogonal, the 5th interface 1-5 and the 3rd interface 1-3, the angle of the 4th interface 1-4 is 135 °, the 3rd interface 1-3, 4th interface 1-4, 5th interface 1-5 place plane orthogonal is in the axis of first interface 1-1, and described push rod 2 is arranged on the 3rd interface 1-3 of five-way joint 1, and side bar 3 is arranged on the 4th interface 1-4 of five-way joint 1, the first interface 1-1 of five-way joint 1, second interface 1-2 is separately installed with a shoulder bar 4, one end of grouted anchor bar 5 is arranged on the 5th interface 1-5 of five-way joint 1, and the other end is anchored in roadway surrounding rock, described push rod 2, grouted anchor bar 5, shoulder bar 4 and side bar 3 are hollow steel tube, described five-way joint 1 and the side bar 3 be arranged on five-way joint 1, push rod 2, shoulder bar 4, grouted anchor bar 5 is the support of composition one centered by five-way joint 1 jointly, be square four above-mentioned supports arrangement by push rod 2 and the side bar 3 quadra structure that to be joined together to form with four five-way joints 1 be summit, grouted anchor bar 5 on four five-way joints 1 is all towards the outside of quadra, each quadra is respectively equipped with a quadra identical with its structure along the axis direction both sides of five-way joint 1 first interface 1-1, be joined together to form the concatemer structure based on single quadra between two adjacent quadras by shoulder bar 4.
As shown in Figure 2, be provided with internal thread 6 in five interfaces of described five-way joint 1, the two ends of described push rod 2, shoulder bar 4, side bar 3 are equipped with the external screw thread mated with described internal thread 6, and one end of described grouted anchor bar 5 is provided with the external screw thread mated with described internal thread 6.
As shown in Figure 3, described grouted anchor bar 5 is arranged with inner concave shape backing plate 7 and nut 8, inner concave shape backing plate 7 has certain yielding property energy, and the external surface of described grouted anchor bar 5 is provided with the external screw thread mated with the internal thread of described nut 8.
Construction method: drilling and footing are tilted to lower 45 degree of drillings obliquely back shoulder nest position inclination 45 degree, cleaning boring, grouted anchor bar 5 and backing plate 7 are installed, fastening nut 10, exposed grouted anchor bar 5 end external screw thread, then grouted anchor bar 5 end is connected with the 5th interface 1-5 of five-way joint 1, to be connected stable after, correct five-way joint 1 position, by push rod 2, side bar 3, shoulder bar 4 is connected with five-way joint 1, five-way joint 1 and the side bar 3 be arranged on five-way joint 1, push rod 2, shoulder bar 4, grouted anchor bar 5 is the support of composition one centered by five-way joint 1 jointly, multiple support is joined together to form the concatemer structure based on single support quadra.
Claims (5)
1. the steel pipe truss grouting and reinforcing for heavily stressed weak broken wall rock and supporting and protection structure, it is characterized in that: comprise five-way joint, push rod, side bar, shoulder bar and grouted anchor bar, described five-way joint comprises first interface, second interface, 3rd interface, 4th interface and the 5th interface and five interfaces interconnect each other, wherein first interface, second interface is positioned on same axis, 3rd interface, orthogonal and the 3rd interface of 4th interface, 4th interface place plane orthogonal is in the axis of first interface, described push rod is arranged on the 3rd interface of five-way joint, side bar is arranged on the 4th interface of five-way joint, the first interface of five-way joint, second interface is separately installed with a shoulder bar, one end of grouted anchor bar is arranged on the 5th interface of five-way joint, the other end is anchored in roadway surrounding rock, described push rod, grouted anchor bar, shoulder bar and side bar are hollow steel tube, described five-way joint and the side bar be arranged on five-way joint, push rod, shoulder bar, grouted anchor bar forms a support centered by five-way joint jointly, be square four above-mentioned supports arrangement by push rod and the side bar quadra structure that to be joined together to form with four five-way joints be summit, grouted anchor bar on four five-way joints is all towards the outside of quadra, each quadra is respectively equipped with a quadra identical with its structure along the axis direction both sides of five-way joint first interface, the concatemer structure based on single quadra is joined together to form by shoulder bar between two adjacent quadras.
2. as claimed in claim 1 for steel pipe truss grouting and reinforcing and the supporting and protection structure of heavily stressed weak broken wall rock, it is characterized in that: in five interfaces of described five-way joint, be provided with internal thread, the two ends of described push rod, shoulder bar, side bar are equipped with the external screw thread mated with described internal thread, and one end of described grouted anchor bar is provided with the external screw thread mated with described internal thread.
3. as claimed in claim 2 for steel pipe truss grouting and reinforcing and the supporting and protection structure of heavily stressed weak broken wall rock, it is characterized in that: described grouted anchor bar is arranged with backing plate and nut, the external surface of described grouted anchor bar is provided with the external screw thread mated with the internal thread of described nut.
4., as claimed in claim 3 for steel pipe truss grouting and reinforcing and the supporting and protection structure of heavily stressed weak broken wall rock, it is characterized in that: described backing plate is inner concave shape backing plate.
5. as claimed in claim 1 for steel pipe truss grouting and reinforcing and the supporting and protection structure of heavily stressed weak broken wall rock, it is characterized in that: in described five-way joint, the 5th interface, the 3rd interface, the 4th interface are positioned at same plane and the angle of the 5th interface and the 3rd interface, the 4th interface is 135 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410511469.1A CN104265329B (en) | 2014-09-29 | 2014-09-29 | For steel pipe truss grouting and reinforcing and the supporting and protection structure of heavily stressed weak broken wall rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410511469.1A CN104265329B (en) | 2014-09-29 | 2014-09-29 | For steel pipe truss grouting and reinforcing and the supporting and protection structure of heavily stressed weak broken wall rock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104265329A CN104265329A (en) | 2015-01-07 |
| CN104265329B true CN104265329B (en) | 2016-03-23 |
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ID=52156887
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410511469.1A Expired - Fee Related CN104265329B (en) | 2014-09-29 | 2014-09-29 | For steel pipe truss grouting and reinforcing and the supporting and protection structure of heavily stressed weak broken wall rock |
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| Country | Link |
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| CN (1) | CN104265329B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057831B (en) * | 2018-10-30 | 2023-05-12 | 湖南科技大学 | Partition type supporting device and supporting method for underground large-section roadway |
| CN112267905B (en) * | 2020-10-23 | 2021-09-03 | 中南大学 | Rock mass embedded truss support structure for roof surrounding rock reinforcement and mounting method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748048A (en) * | 2012-07-17 | 2012-10-24 | 安徽省煤炭科学研究院 | Hole wall grouting anchor cable |
| CN203374285U (en) * | 2013-06-24 | 2014-01-01 | 中国瑞林工程技术有限公司 | High-resistance-increasing type combined steel supporting frame |
| CN103573280B (en) * | 2013-11-21 | 2015-05-13 | 太原理工大学 | Method for supporting porous ooze invasion compound roof roadway |
| CN203742612U (en) * | 2014-03-12 | 2014-07-30 | 淮南矿业(集团)有限责任公司 | Rapid construction supporting system for deep coal mine roadway with weak and broken surrounding rock |
| CN203835420U (en) * | 2014-03-19 | 2014-09-17 | 山东科技大学 | Grouting anchor cable carrying out grouting on one side and fastening on two sides |
| CN204060727U (en) * | 2014-09-29 | 2014-12-31 | 湖南科技大学 | For steel pipe truss grouting and reinforcing and the supporting and protection structure of heavily stressed weak broken wall rock |
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- 2014-09-29 CN CN201410511469.1A patent/CN104265329B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN104265329A (en) | 2015-01-07 |
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Granted publication date: 20160323 Termination date: 20210929 |
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| CF01 | Termination of patent right due to non-payment of annual fee |