CN203412589U - Supporting structure of extremely fractured soft rock roadway passing through geological anomaly zone - Google Patents
Supporting structure of extremely fractured soft rock roadway passing through geological anomaly zone Download PDFInfo
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- CN203412589U CN203412589U CN201320549596.1U CN201320549596U CN203412589U CN 203412589 U CN203412589 U CN 203412589U CN 201320549596 U CN201320549596 U CN 201320549596U CN 203412589 U CN203412589 U CN 203412589U
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Abstract
The utility model discloses a supporting structure of an extremely fractured soft rock roadway passing through a geological anomaly zone and a construction method of the supporting structure. The supporting structure comprises a steel plate high-strength concrete layer which is arranged along the circumferential direction of the inner wall of the roadway and is formed by connecting a plurality of cambered unit members in sequence; the cambered unit members comprise member tubes which are made of a steel plate; high-strength micro-expansion concrete is filled in the internal cavity of each member tube. The supporting structure has high applicability; an entire circle of bracket can be assembled underground by an adjustable number of prefabricated cambered unit members according to the size of a circular roadway section; the supporting structure has reliable quality, is convenient to manufacture and has the advantages of high strength and large supporting resistance.
Description
Technical field
The utility model relates to mine timbering field, is specifically related to a kind of supporting and protection structure of crossing geologic anomaly band soft-rock tunnel smashed to pieces.
Background technology
When the abnormal geological bands such as tomography are crossed in coal mine deep well tunnel, due to architectonic effect, in abnormal belt, rock mass is extremely broken, loose, moisture, during driving, roadway deformation amount is too large, also have " like mud-rock flow " phenomenon, caused great difficulty and had great potential safety hazard to construction and support work.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of supporting and protection structure of crossing geologic anomaly band soft-rock tunnel smashed to pieces of avoiding the abnormal geological band section tunnel to occur unfavorable situations such as repeatedly destroying and reprocess is provided.
A kind of supporting and protection structure of crossing geologic anomaly band soft-rock tunnel smashed to pieces, comprise the steel plate high-strength concrete layer arranging along tunnel inwall circumferencial direction, described steel plate high-strength concrete layer is connected to form successively by several arc monomer members, described arc monomer members comprises the member body of being made by steel plate, is filled with high-strength slightly expanded concrete in the internal cavity of described member body.
Preferably,
Described arc monomer members quantity is 6～8.
Preferably,
Described high-strength slightly expanded concrete is the high-strength slightly expanded concrete of C80.
Preferably,
Described arc monomer members joint is provided with compressible backing plate.
Preferably,
The intrados of described arc monomer members and joint face place are equipped with to the holdfast of member tube intracoelomic cavity direction.
Preferably,
Uniformly on the circumferencial direction of described arc monomer members offer two injected hole/holes for hoist.
Preferably,
The end face of described arc monomer members is welded with connecting angle in the radial direction, is processed with bolt hole on connecting angle.
Preferably,
The fly-ash mortar filling bed being also provided with successively between described steel plate high-strength concrete layer and tunnel inwall and U36 type support.
Structural advantage of the present utility model is: 1, applicability is strong, and whole coil support can, according to the size of circular tunnel section, adopt the adjustable prefabricated arc monomer members of quantity to be assembled in down-hole.2, monomer members can adopt batch production to produce on ground, and reliable in quality is easily manufactured.3, concrete strength high (can reach C80～100), rack bearing is large, and supporting drag is large, and after the compressible backing plate by joint and wall, fly-ash mortar filling bed is realized contracting and allowed pressures, increases that to hinder characteristic good, after setting up, can carry immediately.
Accompanying drawing explanation
Fig. 1 is mounting structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of arc monomer members in the utility model.
The specific embodiment
Below in conjunction with specific embodiment, the utility model is described further.Should be understood that following examples are only for the utility model is described but not for limiting scope of the present utility model.
Referring to Fig. 1, a kind of supporting and protection structure of crossing geologic anomaly band soft-rock tunnel smashed to pieces that the utility model provides, comprise the sheath 1 arranging along tunnel inwall circumferencial direction, in the prior art, the set-up mode that props up sheath 1 adopts the mode of bolt-spary supports and metallic support supporting conventionally, can contracting quantitative limitation but be subject to surrouding rock deformation degree and self, not can solve the technical problem described in background technology.
In order to solve the problem existing at the described current known technology of this manual background technology part and to overcome its defect, the technical scheme that the utility model is taked is: as shown in Figure 1, described sheath 1 is the steel plate high-strength concrete layer being connected to form successively by 6～8 arc monomer members 2, (certainly, arc monomer members quantity also can be according to actual circular tunnel section size, carry out correspondence adjustment, 6～8 arc monomer members are optimal design.) referring to Fig. 2, described arc monomer members 2 comprises the member body 2a being made by the thick steel plate of 20mm, is filled with the high-strength slightly expanded concrete 2b of C80 in the internal cavity of described member body 2a, forms steel plate high-strength concrete arc monomer members.Monomer members adopts batch production to produce on ground, reliable in quality, and concrete strength high (can reach C80～100), has rack bearing large, the advantage that supporting drag is large.
The utility model is in order further to improve its structure, and structure of the present utility model in the specific implementation, can also, on above-described technical scheme basis, adopt the following examples:
Referring to Fig. 1, the cross section of described arc monomer members 2 is rectangular, and joint is provided with the compressible backing plate 3 that 20mm is thick, and realization can be contracted and be allowed pressure.
The intrados of described arc monomer members 2 and joint face place are equipped with to the holdfast 2c (length 100mm) of cavity direction in member body 2a, strengthen with concrete bonding.
Uniformly on the circumferencial direction of described arc monomer members 2 offer two injected hole/lifting hole(eyelet)s 4, facilitated underground construction lifting and grouting behind shaft or drift lining filling.
The end face of described arc monomer members 2 is welded with connecting angle in the radial direction, is processed with bolt hole above it.Reliable connection while guaranteeing down-hole assembling.
Between described steel plate high-strength concrete layer 3 and tunnel inwall, be also provided with successively fly-ash mortar filling bed 5 and the U36 type support 6 of 200mm.Can effectively improve bearing strength of the present utility model and reliability.
Claims (8)
1. a supporting and protection structure of crossing geologic anomaly band soft-rock tunnel smashed to pieces, it is characterized in that: comprise the steel plate high-strength concrete layer arranging along tunnel inwall circumferencial direction, described steel plate high-strength concrete layer is connected to form successively by several arc monomer members, described arc monomer members comprises the member body of being made by steel plate, is filled with high-strength slightly expanded concrete in the internal cavity of described member body.
2. the supporting and protection structure of crossing geologic anomaly band soft-rock tunnel smashed to pieces according to claim 1, is characterized in that: described arc monomer members quantity is 6～8.
3. the supporting and protection structure of crossing geologic anomaly band soft-rock tunnel smashed to pieces according to claim 1, is characterized in that: described high-strength slightly expanded concrete is the high-strength slightly expanded concrete of C80.
4. the supporting and protection structure of crossing geologic anomaly band soft-rock tunnel smashed to pieces according to claim 1, is characterized in that: described arc monomer members joint is provided with compressible backing plate.
5. according to the supporting and protection structure of crossing geologic anomaly band soft-rock tunnel smashed to pieces described in claim 1,2,3 or 4, it is characterized in that: the intrados of described arc monomer members and joint face place are equipped with to the holdfast of member tube intracoelomic cavity direction.
6. according to the supporting and protection structure of crossing geologic anomaly band soft-rock tunnel smashed to pieces described in claim 1,2,3 or 4, it is characterized in that: uniformly on the circumferencial direction of described arc monomer members offer two injected hole/holes for hoist.
7. according to the supporting and protection structure of crossing geologic anomaly band soft-rock tunnel smashed to pieces described in claim 1,2,3 or 4, it is characterized in that: the end face of described arc monomer members is welded with connecting angle in the radial direction, on connecting angle, be processed with bolt hole.
8. according to the supporting and protection structure of crossing geologic anomaly band soft-rock tunnel smashed to pieces described in claim 1,2,3 or 4, it is characterized in that: the fly-ash mortar filling bed being also provided with successively between described steel plate high-strength concrete layer and tunnel inwall and U36 type support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549596.1U CN203412589U (en) | 2013-08-27 | 2013-08-27 | Supporting structure of extremely fractured soft rock roadway passing through geological anomaly zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549596.1U CN203412589U (en) | 2013-08-27 | 2013-08-27 | Supporting structure of extremely fractured soft rock roadway passing through geological anomaly zone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203412589U true CN203412589U (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320549596.1U Expired - Fee Related CN203412589U (en) | 2013-08-27 | 2013-08-27 | Supporting structure of extremely fractured soft rock roadway passing through geological anomaly zone |
Country Status (1)
| Country | Link |
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| CN (1) | CN203412589U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557007A (en) * | 2013-08-27 | 2014-02-05 | 安徽理工大学 | Support structure passing geological abnormal zone extreme crushing soft rock tunnel and construction method of support structure |
| CN108760370A (en) * | 2018-06-07 | 2018-11-06 | 山东科技大学 | Multi-angle oblique rock stratum roadway support analog simulation experimental rig and test method |
-
2013
- 2013-08-27 CN CN201320549596.1U patent/CN203412589U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557007A (en) * | 2013-08-27 | 2014-02-05 | 安徽理工大学 | Support structure passing geological abnormal zone extreme crushing soft rock tunnel and construction method of support structure |
| CN103557007B (en) * | 2013-08-27 | 2015-10-21 | 安徽理工大学 | Cross the construction method of geological anomaly zone soft-rock tunnel smashed to pieces |
| CN108760370A (en) * | 2018-06-07 | 2018-11-06 | 山东科技大学 | Multi-angle oblique rock stratum roadway support analog simulation experimental rig and test method |
| CN108760370B (en) * | 2018-06-07 | 2023-11-24 | 山东科技大学 | Multi-angle inclined rock stratum roadway support similarity simulation test device and test method |
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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 |
Granted publication date: 20140129 Termination date: 20150827 |
|
| EXPY | Termination of patent right or utility model |