CN102979535B - Draining type section of jurisdiction is used in a kind of tunnel lining - Google Patents
Draining type section of jurisdiction is used in a kind of tunnel lining Download PDFInfo
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- CN102979535B CN102979535B CN201210577096.9A CN201210577096A CN102979535B CN 102979535 B CN102979535 B CN 102979535B CN 201210577096 A CN201210577096 A CN 201210577096A CN 102979535 B CN102979535 B CN 102979535B
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Abstract
The invention discloses a kind of tunnel lining draining type section of jurisdiction, comprise the section of jurisdiction (1) of steel concrete, the injected hole in section of jurisdiction (1) or hole for hoist (1a), steel bar stress (1b), outer field concrete cover (1c); And the concrete cover (1c) that one or two injected hole (1a) of described section of jurisdiction (1) is just right is pre-buried can the sealing blob of viscose (2) of water-swellable; Self-advancing type hollow bolt (3) inserts from the injected hole described in section of jurisdiction (1) or hole for hoist (1a); through sealing blob of viscose (2); get out concrete cover (1c), and on the bar wall of self-advancing type hollow bolt (3) outer end, have in drain hole (3a), its inner chamber the Filter column (4) be plugged with for filter sand.The lining cutting that this section of jurisdiction is built has the function that sluices reliably, reduces the water pressure of structural perimeter preferably, ensures the safety in tunnel; And its easy construction, little to pipe-plate lining structural damage, the construction cost of pipe-plate lining is low.
Description
Technical field
The present invention relates to a kind of tunnel lining section of jurisdiction.
Background technology
To Deep-buried Railway Tunnel, when adopting closed tunnel machine (TBM) to construct, (lining cutting is assembled by the many endless tubes sheet along tunnel longitudinal direction for assembling pipe-plate lining corresponding with it, every endless tube sheet again by quantity not wait prefabricated reinforced concrete section of jurisdiction be formed by connecting by hoop bolt) be all closed lining cutting, can not draining to reduce the water pressure of structural perimeter.
Along with the development of China railways and highway tunnel, a large amount of scale long (length is greater than 10km) will be there is, the Deep-buried Railway Tunnel of buried depth large (200-500m).Because it is buried greatly, ground water pressure is high, existing closed pipe-plate lining structure will bear external water pressure higher in country rock, increases the construction cost of pipe-plate lining.Meanwhile, ground water pressure, by the impact of the uncontrollable factors such as weather, causes pipe-plate lining to there is serious potential safety hazard.
Summary of the invention
The object of the invention is to propose a kind of tunnel lining draining type section of jurisdiction, there is the function that sluices reliably with the lining cutting that this kind of draining type section of jurisdiction is built, the water pressure of structural perimeter can be reduced preferably, ensure the safety in tunnel; And its easy construction, little to pipe-plate lining structural damage, the construction cost of pipe-plate lining is low.
The technical solution adopted for the present invention to solve the technical problems is: a kind of tunnel lining draining type section of jurisdiction, comprises the section of jurisdiction of steel concrete, the injected hole in section of jurisdiction or hole for hoist, steel bar stress, outer field concrete cover; And the concrete cover that one or two injected hole of described section of jurisdiction is just right is pre-buried can the sealing blob of viscose of water-swellable; Self-advancing type hollow bolt inserts from the injected hole described in section of jurisdiction or hole for hoist, through sealing blob of viscose, gets out concrete cover, and on the bar wall of self-advancing type hollow bolt outer end, has in drain hole, its inner chamber the Filter column be plugged with for filter sand.
Using method of the present invention and principle are:
After section of jurisdiction installs, Filter column is taken out, supporting inner metal sleeve is filled in self-advancing type hollow bolt inner chamber, self-advancing type hollow bolt is made outwards to pierce country rock (inner metal sleeve can avoid chip in the process to enter anchor pole inner chamber by drain hole) again, then take out inner metal sleeve, fill in Filter column; Be connected with the draining blind pipe of hoop the inner of self-advancing type hollow bolt, the outfall of draining blind pipe is positioned at the top of the centre drain in tunnel again.
After pipe-plate lining is built up, the gap between the hollow bolt body of rod and section of jurisdiction can be filled up by the sealing blob of viscose of water-swellable, can effectively prevent underground water from infiltrating tunnel inner wall by body of rod outer wall.Like this, the high pressure crevice water in country rock also can only enter anchor pole inner chamber from the drain hole of self-advancing type hollow bolt bar wall, and flows to the inner of anchor pole by Filter column.By circle draining blind pipe collecting ring to hollow bolt on each piece of section of jurisdiction lead into underground water and the centre drain of confluxing to tunnel bottom is discharged.
Compared with prior art, the invention has the beneficial effects as follows:
1. through the hollow bolt of section of jurisdiction the high pressure crevice water in country rock introduced draining blind pipe and conflux to centre drain and discharge; Form the hollow bolt on multiple sections of jurisdiction of section of jurisdiction ring, be distributed in hoop some positions of a week, the effect of tunneling boring sluicing step-down can be produced.And the longitudinally determining deviation setting along tunnel of tapping pipe loop, form three-dimensional drainage system, therefore, discharging capacity is strong, well can reduce the water pressure of structural perimeter, ensures the safety in tunnel; And the intensity of section of jurisdiction need not be strengthened, reduce the construction cost of lining cutting.
2. crevice water in country rock is introduced draining blind pipe by the hollow bolt through section of jurisdiction, than the direct mode sluiced in section of jurisdiction perforate, the invention solves the plug-hole difficult problem in TBM work progress after simultaneous grouting slurry solidification, promotion and implementation are easy.
3. change the Filter column in hollow bolt by timing, effectively can avoid fine grained plug-hole and blocked shot phenomenon, ensure that chronicity and the validity of pipe-plate lining sluicing function.
4. water-swellable sealing blob of viscose can effectively prevent underground water from infiltrating tunnel inner wall by body of rod outer wall, protects tunnel outward appearance, avoids the impact of infiltration on the various equipment such as electric.Meanwhile, the sealing blob of viscose of water-swellable is embedded in concrete cover, does not also affect the mechanical property of steel bar stress and whole section of jurisdiction.
5. hollow bolt directly utilizes injected hole unnecessary on section of jurisdiction or hole for hoist, and non-individual redrilling, very little on the impact of whole section of jurisdiction mechanical property; Also make it easy to process, execute-in-place is easy.
The length that above-mentioned self-advancing type hollow bolt 3 stretches out concrete cover 1c is 2-3m; The thickness of blob of viscose 2 is 2-3cm.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the section of jurisdiction of the embodiment of the present invention.
Fig. 2 is the structural representation after hollow bolt is removed in the section of jurisdiction of the embodiment of the present invention.
Fig. 3 is that the section of the pipe-plate lining become with the pipe sheet assembling of the embodiment of the present invention reduces schematic diagram.
Detailed description of the invention
Embodiment
Fig. 1-3 illustrates, the specific embodiment of the present invention is a kind of tunnel lining draining type section of jurisdiction, comprises the section of jurisdiction 1 of steel concrete, the injected hole in section of jurisdiction 1 or hole for hoist 1a, steel bar stress 1b, outer field concrete cover 1c.The concrete cover 1c that one or two injected hole 1a of described section of jurisdiction 1 is just right is pre-buried can the sealing blob of viscose 2 of water-swellable; Self-advancing type hollow bolt 3 inserts from the injected hole described in section of jurisdiction 1 or hole for hoist 1a, through sealing blob of viscose 2, gets out concrete cover 1c, and on the bar wall of self-advancing type hollow bolt 3 outer end, have in drain hole 3a, its inner chamber the Filter column 4 be plugged with for filter sand.
The length that the self-advancing type hollow bolt 3 of this example stretches out concrete cover 1c is 2-3m; The thickness of blob of viscose 2 is 2-3cm.
Fig. 3 illustrates, using method and the sluicing process of this example are as follows:
After section of jurisdiction 1 installs, Filter column 4 is taken out, supporting inner metal sleeve is filled in self-advancing type hollow bolt 3 inner chamber, self-advancing type hollow bolt 3 is made outwards to pierce country rock (inner metal sleeve can avoid chip in the process to enter anchor pole inner chamber by drain hole) again, then take out inner metal sleeve, again fill in Filter column 4; Be connected with circle draining blind pipe 5 the inner of self-advancing type hollow bolt 3, the outfall of circle draining blind pipe 5 is positioned at the top of the centre drain 6 in tunnel again.
After pipe-plate lining is built up, the gap between the body of rod of hollow bolt 3 and section of jurisdiction 1 can be filled up by the sealing blob of viscose 2 of water-swellable, can effectively prevent underground water from infiltrating tunnel inner wall by body of rod outer wall.Like this, the high pressure crevice water energy in country rock, also can only enter anchor pole inner chamber from the drain hole 3a of self-advancing type hollow bolt 3 bar wall, and flow to the inner of anchor pole 3 by Filter column 4.By circle draining blind pipe 5 collecting ring to the hollow bolt 3 on each piece of section of jurisdiction 1 lead into underground water, and the centre drain 6 of confluxing to tunnel bottom to be discharged.
Claims (2)
1. draining type section of jurisdiction is used in a tunnel lining, comprise the section of jurisdiction (1) of steel concrete, hole for hoist in section of jurisdiction (1) or injected hole (1a), steel bar stress (1b), outer field concrete cover (1c), is characterized in that: the concrete cover (1c) that one or two injected hole (1a) of described section of jurisdiction (1) is just right is pre-buried can the sealing blob of viscose (2) of water-swellable; Self-advancing type hollow bolt (3) inserts from the hole for hoist described in section of jurisdiction (1) or injected hole (1a); through sealing blob of viscose (2); get out concrete cover (1c), and on the bar wall of self-advancing type hollow bolt (3) outer end, have in drain hole (3a), its inner chamber the Filter column (4) be plugged with for filter sand.
2. a kind of tunnel lining draining type section of jurisdiction according to claim 1, is characterized in that: the length that described self-advancing type hollow bolt (3) stretches out concrete cover (1c) is 2-3m; The thickness of blob of viscose (2) is 2-3cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577096.9A CN102979535B (en) | 2012-12-27 | 2012-12-27 | Draining type section of jurisdiction is used in a kind of tunnel lining |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210577096.9A CN102979535B (en) | 2012-12-27 | 2012-12-27 | Draining type section of jurisdiction is used in a kind of tunnel lining |
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| CN102979535A CN102979535A (en) | 2013-03-20 |
| CN102979535B true CN102979535B (en) | 2015-12-02 |
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| CN201210577096.9A Active CN102979535B (en) | 2012-12-27 | 2012-12-27 | Draining type section of jurisdiction is used in a kind of tunnel lining |
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| CN103422868B (en) * | 2013-08-06 | 2015-10-21 | 同济大学 | The structure of a kind of Super-void Water Pressure that dissipates, reinforcing shield tunnel soil body and method |
| CN103953367B (en) * | 2014-04-18 | 2016-05-04 | 中国水电顾问集团华东勘测设计研究院有限公司 | In hole, eliminate the method for shield tunnel Stratigraphic liquidation |
| CN104453959A (en) * | 2014-12-07 | 2015-03-25 | 金川集团股份有限公司 | Shot-anchoring net supporting method for surrounding rock of roadway |
| CN104533468B (en) * | 2014-12-19 | 2018-07-10 | 上海地铁维护保障有限公司工务分公司 | A kind of subway tunnel the wall of a borehole post-grouting method |
| CN105756685B (en) * | 2016-05-03 | 2018-05-04 | 西南交通大学 | A kind of reinforced combined retaining structure of pipe-plate lining |
| CN109520839B (en) * | 2018-12-25 | 2023-12-15 | 西南交通大学 | Multifunctional test method for tensile property of shield tunnel bolt joint |
| CN109520838B (en) * | 2018-12-25 | 2023-12-15 | 西南交通大学 | Tensile property test device for shield tunnel bolt joint |
| CN109915179B (en) * | 2019-03-29 | 2020-05-19 | 中国水利水电第三工程局有限公司 | Water plugging method for open TBM supporting shoe auxiliary jacking flow-reducing tunnel |
| CN110700853A (en) * | 2019-10-31 | 2020-01-17 | 中铁十八局集团第三工程有限公司 | Shallow soil covering shield tunnel reinforcing method based on weak stratum |
| CN111188648A (en) * | 2020-03-24 | 2020-05-22 | 西安建筑科技大学 | Tunnel water-proof and drainage system and construction method thereof |
| CN114151111B (en) * | 2021-11-29 | 2023-08-22 | 上海建工四建集团有限公司 | Water stopping method for long-distance curve jacking pipe |
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