CN102913256A - Pentagram-shaped support structure for granite residual soil tunnel and method therefor - Google Patents
Pentagram-shaped support structure for granite residual soil tunnel and method therefor Download PDFInfo
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- CN102913256A CN102913256A CN2012104664445A CN201210466444A CN102913256A CN 102913256 A CN102913256 A CN 102913256A CN 2012104664445 A CN2012104664445 A CN 2012104664445A CN 201210466444 A CN201210466444 A CN 201210466444A CN 102913256 A CN102913256 A CN 102913256A
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Abstract
The invention discloses a pentagram-shaped support structure for a granite residual soil tunnel and a method for the granite residual soil tunnel. The support structure comprises a center floral pipe, side floral pipes, positioning steel bars, a surface-layer reinforcing fabric and a sprayed concrete-reinforcing layer, wherein the center floral pipe is a large-diameter long floral pipe distributed at the center, the side floral pipes are four small-diameter short floral pipes distributed around the center floral pipe, the floral pipes are fixed by the eight positioning steel bars, the floral pipe bodies are evenly provided with holes, and the enough potassium silicate grouting body is injected into the holes. The invention adopts the grouting technology of the floral pipes and potassium silicate floral pipes with different pore diameters and different lengths, so that the reinforcing functions of the soil rib adding and pressure grouting can be jointly combined, the solidification effect of the residual soil can be effectively enhanced due to the potassium silicate grouting body, the rock-soil body can be jointly reinforced, and the problem that the conventional anchor rod is bad in support effect can be solved. Furthermore, the structure is simple, convenient to construct, and good in treatment effect.
Description
Technical field
The present invention relates to tunnel support structure, be specifically related to granite residual soil tunnel five-pointed star formula floral tube supporting and protection structure and method.
Background technology
At present, supporting and protecting system of tunnel generally is comprised of rock mass and supporting and protection structure.The effect that supporting and protection structure generally has load-bearing and goes along with sb. to guard him two aspects.Supporting and protection structure can be born pressure from surrounding rock, dead load and other loads, play operative constraint and deformation controlling for rock surrounding gateways, improve surrounding rock stability, prevent country rock weathering, avalanche and waterproof, guarantee construction safety, guarantee the effects such as stable, durable, overall appearance of the process of runing.
And traditional anchor pole on average uses supporting strength, and material consumption is huge, and its supporting, grouting and reinforcing are difficult for guaranteeing to granite residual soil tunnel support quality and effect.
Summary of the invention
For solving the problems of the technologies described above, the invention provides five-pointed star formula floral tube supporting and protection structure and the method in the effective granite residual soil tunnel of a kind of simple in structure, easy construction, surrounding rock consolidation.
The technical scheme that the present invention solves the problems of the technologies described above is: comprise the center floral tube, the ray flower pipe, spacer bars, top layer steel mesh reinforcement and concrete strengthening layer, described center floral tube is a long floral tube of major diameter that is arranged in central authorities, described ray flower Guan Weisi root is arranged in the short floral tube of minor diameter around the floral tube of center, described center floral tube and ray flower pipe are fixed with spacer bars between any two, center floral tube and ray flower pipe pipe shaft have been evenly arranged hole, the potassium silicate injecting cement paste injects the center floral tube, in the ray flower pipe, the center floral tube and above ray flower pipe top lay the top layer steel mesh reinforcement, spray a layer concrete on the steel mesh reinforcement of top layer.
Above-mentioned granite residual soil tunnel five-pointed star formula floral tube supporting and protection structure, described center floral tube is long 4-6m, caliber is Φ 89～Φ 108mm, the seamless floral tube of wall thickness 3 ~ 6mm.
Above-mentioned granite residual soil tunnel five-pointed star formula floral tube supporting and protection structure, described ray flower Guan Weichang 2-3 m, caliber is Φ 28～Φ 40mm, the seamless floral tube of wall thickness 2 ~ 5mm.
Above-mentioned granite residual soil tunnel five-pointed star formula floral tube supporting and protection structure, described each ray flower tube pitch is 1m.
Above-mentioned granite residual soil tunnel five-pointed star formula floral tube supporting and protection structure, the hole that described center floral tube and ray flower pipe pipe shaft are arranged is quincunx hole.
Above-mentioned granite residual soil tunnel five-pointed star formula floral tube supporting and protection structure, described spacer bars is Φ 8mm reinforcing bar.
Above-mentioned granite residual soil tunnel five-pointed star formula floral tube supporting and protection structure, the concentration of described potassium silicate injecting cement paste is 10%.
Above-mentioned granite residual soil tunnel five-pointed star formula floral tube supporting and protection structure, the concrete of described concrete strengthening layer is the C20 plain concrete.
The supporting method in a kind of granite residual soil tunnel may further comprise the steps:
1) measure unwrapping wire in the place, the position, hole of measuring center floral tube and four ray flower pipes, wherein the position, hole of four ray flower pipes is the square placement, and the distance between each ray flower pore position is 0.8-1.2m;
2) in four ray flower pipe patchhole positions of long 2-3 m, caliber Φ 28～Φ 40mm, wall thickness 2 ~ 5mm, long 4-6m, caliber is the centre that the center floral tube of Φ 89～Φ 108mm, wall thickness 3 ~ 6mm is inserted in described each ray flower pipe;
3) with 8 reinforcing bar center floral tube and ray flower pipe are welded the location in twos;
4) outfit concentration is 10% potassium silicate injecting cement paste, and after injecting cement paste stirred, again pumping pressure injection was in each floral tube;
5) treat that all injected holes all solidify 2 ~ 3 day time fully, on floral tube, lay the top layer steel mesh reinforcement;
6) spray a layer concrete at the top layer steel mesh reinforcement.
Beneficial effect of the present invention is: the present invention adopts floral tube and the potassium silicate floral tube slurry injection technique of different pore size different length, country rock is unstable during to the disturbance of granite residual soil tunnel excavation and immersion comparatively adapts to, the reinforcement effect of reinforcement in the soil (floral tube) and slip casing by pressure can be combined, and the potassium silicate injecting cement paste has strengthened the solidification effect of residual soil effectively, acting in conjunction is played in reinforcing to Rock And Soil, solved the not good problem of traditional Effects of Supporting, and simple in structure, easy construction, regulation effect is good.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is sectional view of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 1, 2, the present invention includes center floral tube 1, ray flower pipe 2, spacer bars 3, spacer bars 4, top layer steel mesh reinforcement 5, potassium silicate injecting cement paste 6, concrete strengthening layer 7, described center floral tube 1 is a long floral tube of major diameter that is arranged in central authorities, center floral tube 1 long 4-6m, caliber is Φ 89～Φ 108mm, the seamless floral tube of wall thickness 3 ~ 6mm, described ray flower pipe 2 is four and is arranged in the short floral tube of center floral tube 1 minor diameter all around, ray flower pipe 2 long 2-3 m, caliber is Φ 28～Φ 40mm, the seamless floral tube of wall thickness 2 ~ 5mm.Described center floral tube 1, ray flower pipe 2 are fixed by 8 spacer barss 3, spacer bars 4, and center floral tube 1 and ray flower pipe 2 pipe shafts have been evenly arranged hole 8, inject potassium silicate injecting cement paste 6 in the hole 8 of center floral tube 1 and ray flower pipe 2.Lay top layer steel mesh reinforcement 5 on floral tube, the top layer steel mesh reinforcement adopts Φ 6@100mm to arrange.Sprayed mortar back-up coat 7 on the top layer steel mesh reinforcement 5.
The supporting method of a kind of granite residual soil tunnel five-pointed star formula floral tube may further comprise the steps:
1. measure unwrapping wire in the place, the position, hole of measuring floral tube, wherein the position, hole of four ray flower pipes is the square placement, and the distance between each ray flower pore position is 1m, and hole position error is not more than 2cm;
2. make and insert floral tube, long 2-3 m, caliber is Φ 28～Φ 40mm, four ray flower pipes of wall thickness 2 ~ 5mm insert surveys measured Kong Weizhong, long 4-6m, caliber is Φ 89～Φ 108mm, and the center floral tube of wall thickness 3 ~ 6mm is inserted in the centre of described each ray flower pipe;
3. with the reinforcing bar of 8 Φ 8mm each floral tube welding is located;
4. be equipped with concentration and be 10% potassium silicate injecting cement paste, after injecting cement paste stirred, again pumping pressure injection was in the hole of each floral tube;
5. treat that all injected holes all solidify 2 ~ 3 day time fully, lay the top layer steel mesh reinforcement, the top layer steel mesh reinforcement adopts Φ 6@100mm to arrange;
6. spray certain thickness C20 plain concrete at the top layer steel mesh reinforcement.
Claims (9)
1. granite residual soil tunnel five-pointed star formula floral tube supporting and protection structure, it is characterized in that: comprise the center floral tube, the ray flower pipe, spacer bars, top layer steel mesh reinforcement and concrete strengthening layer, described center floral tube is a long floral tube of major diameter that is arranged in central authorities, described ray flower Guan Weisi root is arranged in the short floral tube of minor diameter around the floral tube of center, described center floral tube and ray flower pipe are fixed with spacer bars between any two, center floral tube and ray flower pipe pipe shaft have been evenly arranged hole, the potassium silicate injecting cement paste injects the center floral tube, in the ray flower pipe, the center floral tube and above ray flower pipe top lay the top layer steel mesh reinforcement, spray a layer concrete on the steel mesh reinforcement of top layer.
2. granite residual soil according to claim 1 tunnel five-pointed star formula floral tube supporting and protection structure, it is characterized in that: described center floral tube is long 4-6m, caliber is Φ 89～Φ 108mm, the seamless floral tube of wall thickness 3 ~ 6mm.
3. granite residual soil according to claim 1 tunnel five-pointed star formula floral tube supporting and protection structure, it is characterized in that: described ray flower Guan Weichang 2-3 m, caliber is Φ 28～Φ 40mm, the seamless floral tube of wall thickness 2 ~ 5mm.
4. granite residual soil according to claim 1 tunnel five-pointed star formula floral tube supporting and protection structure, it is characterized in that: described each ray flower tube pitch is 1m.
5. granite residual soil according to claim 1 tunnel five-pointed star formula floral tube supporting and protection structure, it is characterized in that: the hole that described center floral tube and ray flower pipe pipe shaft are arranged is quincunx hole.
6. according to claim 2 or 3 described granite residual soil tunnel five-pointed star formula floral tube supporting and protection structure, it is characterized in that: described spacer bars is Φ 8mm reinforcing bar.
7. according to claim 2 or 3 described granite residual soil tunnel five-pointed star formula floral tube supporting and protection structure, it is characterized in that: the concentration of described potassium silicate injecting cement paste is 10%.
8. according to claim 2 or 3 described granite residual soil tunnel five-pointed star formula floral tube supporting and protection structure, it is characterized in that: the concrete of described sprayed mortar back-up coat is the C20 plain concrete.
9. the supporting method in a granite residual soil tunnel may further comprise the steps:
1) measure unwrapping wire in the place, the position, hole of measuring center floral tube and four ray flower pipes, wherein the position, hole of four ray flower pipes is the square placement, and the distance between each ray flower pore position is 0.8-1.2m;
2) in four ray flower pipe patchhole positions of long 2-3 m, caliber Φ 28～Φ 40mm, wall thickness 2 ~ 5mm, long 4-6m, caliber is the centre that the center floral tube of Φ 89～Φ 108mm, wall thickness 3 ~ 6mm is inserted in described each ray flower pipe;
3) with 8 reinforcing bar center floral tube and ray flower pipe are welded the location in twos;
4) outfit concentration is 10% potassium silicate injecting cement paste, and after injecting cement paste stirred, again pumping pressure injection was in each floral tube;
5) treat that all injected holes all solidify 2 ~ 3 day time fully, on floral tube, lay the top layer steel mesh reinforcement;
6) spray a layer concrete at the top layer steel mesh reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210466444.5A CN102913256B (en) | 2012-11-19 | 2012-11-19 | Pentagram-shaped support structure for granite residual soil tunnel and method therefor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210466444.5A CN102913256B (en) | 2012-11-19 | 2012-11-19 | Pentagram-shaped support structure for granite residual soil tunnel and method therefor |
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| Publication Number | Publication Date |
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| CN102913256A true CN102913256A (en) | 2013-02-06 |
| CN102913256B CN102913256B (en) | 2015-02-25 |
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| CN201210466444.5A Expired - Fee Related CN102913256B (en) | 2012-11-19 | 2012-11-19 | Pentagram-shaped support structure for granite residual soil tunnel and method therefor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364475A (en) * | 2020-03-23 | 2020-07-03 | 中国一冶集团有限公司 | Construction method of grouting floral tube anchor rod in soft soil slope support |
| CN116044416A (en) * | 2023-02-22 | 2023-05-02 | 广州大学 | Tunnel grouting reinforcement mechanism for water-rich granite residual soil stratum mine |
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| CN1693588A (en) * | 2005-06-23 | 2005-11-09 | 李最雄 | Solidifying agent and solidifying technology for earth ruins |
| CN1840856A (en) * | 2005-03-30 | 2006-10-04 | 中国矿业大学 | Bottom plate concealed type reverse-arc grouting construction method |
| CN101864960A (en) * | 2010-05-17 | 2010-10-20 | 中铁二十局集团有限公司 | Carst region double-arch road tunnel construction method |
| CN102230382A (en) * | 2011-05-20 | 2011-11-02 | 中国矿业大学 | Progressive shielding booster-type grouting and reinforcing technology for baseboard |
| CN102383806A (en) * | 2011-07-18 | 2012-03-21 | 广东华盟路桥工程有限公司 | Construction technology for allowing tunnel to pass through ultra-large karst cave |
| CN203114296U (en) * | 2012-11-19 | 2013-08-07 | 湖南科技大学 | Five-pointed star type floral tube retaining and protecting structure of granite residual soil tunnel |
-
2012
- 2012-11-19 CN CN201210466444.5A patent/CN102913256B/en not_active Expired - Fee Related
Patent Citations (6)
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| CN1840856A (en) * | 2005-03-30 | 2006-10-04 | 中国矿业大学 | Bottom plate concealed type reverse-arc grouting construction method |
| CN1693588A (en) * | 2005-06-23 | 2005-11-09 | 李最雄 | Solidifying agent and solidifying technology for earth ruins |
| CN101864960A (en) * | 2010-05-17 | 2010-10-20 | 中铁二十局集团有限公司 | Carst region double-arch road tunnel construction method |
| CN102230382A (en) * | 2011-05-20 | 2011-11-02 | 中国矿业大学 | Progressive shielding booster-type grouting and reinforcing technology for baseboard |
| CN102383806A (en) * | 2011-07-18 | 2012-03-21 | 广东华盟路桥工程有限公司 | Construction technology for allowing tunnel to pass through ultra-large karst cave |
| CN203114296U (en) * | 2012-11-19 | 2013-08-07 | 湖南科技大学 | Five-pointed star type floral tube retaining and protecting structure of granite residual soil tunnel |
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| 张玉坡等: "花管复合土钉墙支护在基坑中的应用", 《中国煤炭地质》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364475A (en) * | 2020-03-23 | 2020-07-03 | 中国一冶集团有限公司 | Construction method of grouting floral tube anchor rod in soft soil slope support |
| CN111364475B (en) * | 2020-03-23 | 2021-11-26 | 中国一冶集团有限公司 | Construction method of grouting floral tube anchor rod in soft soil slope support |
| CN116044416A (en) * | 2023-02-22 | 2023-05-02 | 广州大学 | Tunnel grouting reinforcement mechanism for water-rich granite residual soil stratum mine |
| CN116044416B (en) * | 2023-02-22 | 2023-11-07 | 广州大学 | Tunnel grouting reinforcement mechanism for water-rich granite residual soil stratum mine |
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| CN102913256B (en) | 2015-02-25 |
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