CN1166852C - Construction mode with full cross-section tunneller - Google Patents
Construction mode with full cross-section tunneller Download PDFInfo
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- CN1166852C CN1166852C CNB021099405A CN02109940A CN1166852C CN 1166852 C CN1166852 C CN 1166852C CN B021099405 A CNB021099405 A CN B021099405A CN 02109940 A CN02109940 A CN 02109940A CN 1166852 C CN1166852 C CN 1166852C
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- backfill
- rubber hose
- pipe sheets
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Abstract
The present invention relates to a construction method with a full cross-section tunneler. The present invention mainly solves the technical problems that the installing accuracy of rubber water-stop strips of pipe sheets is high; water-stop effects are poor, and the back filling of pea gravels is uncompacted and leaky. In order to solve the technical problems, the present invention adopts the technical scheme that the construction method comprises the processes: rock cutting, lining pipe sheets, water stop of the pipe sheets, the back filling of pea gravels, the perfusion of cement pulp, etc., wherein the water-stop process of pipe sheets is composed of the following steps: the butt joint of the pipe sheets; the filling strips are arranged on a butt-joint gap at the bottom of the filling groove; plastic water-stop materials are embedded into the filling groove; iron wedges are wedged from the top of the filling groove, and the butt-joint gap on the surface of the pipe sheets is backfilled by high-strength cement mortar. The processes of the backfilling of pea gravels and the perfusion of cement pulp are composed of the following steps: the peripheral segmentation of the pipe sheets, a rubber hose is arranged in the peripheral circular direction of the pipe sheets; the rubber hose is inflate, and then, the periphery of the pipe sheets is backfilled with the pea gravels; the cement pulp is perfused, and finally, the rubber hose is deflated and is perfused with the cement pulp.
Description
Technical field
The present invention relates to a kind of job practices of full face tunnel boring machine, it belongs to a kind of plastic material that adopts and embeds preventing that segment joint from leaking and preventing the job practices of backfill beans gravel leakiness and spillage with rubber hose of filling slot.
Background technology
In highway, railway, mining and water conservancy project constructing tunnel, extensively adopt full face tunnel boring machine to construct at present, characteristics such as driving speed is fast, safe and reliable though it has, mechanization and automaticity height, work situation are good, but want while digging lining segment, backfill beans gravel and grout injection during owing to the full face tunnel boring machine construction, thereby easily form a large amount of seams during lining segment in the junction of section of jurisdiction, these joint treatment are bad, the capital forms leak paths, so how to handle the sealing of seam well, just become key issue.Water-stopping method commonly used now is: the circle rubber sealing rod that bonds around in prefabricated section of jurisdiction, when install the section of jurisdiction, form butt joint, and the rubber sealing rod between the compression seam is to reach the sealing purpose.The problem that this method exists is: 1, the installation accuracy of the watertight rubber bar between the section of jurisdiction requires height, and general requirements reaches several millimeters, and this is difficult to accomplish in the seam of several myriametres even tens myriametres; 2, cost height, the present rubber sealing rod that uses, every linear meter(lin.m.) price units up to a hundred, have in addition up to 122.1 yuan; 3, difficult reparation is difficult, in case defective takes place, rubber sealing rod originally can't take out, and influences pouring into of cement paste; 4, the rubber sealing rod is installed near beans gravel one side, has blocked the passage that cement paste enters segment joint.The backfill beans gravel now commonly used and the method for grout injection are: directly backfill beans gravel and grout injection between good periphery, section of jurisdiction of lining cutting and country rock.Though this method can solve caving in of country rock, but it still exists a defective promptly because section of jurisdiction not segmentation of periphery, make the beans gravel of backfill form free face towards the one side of tunneling direction, cause the backfill of beans gravel not fill up, do not have the effect of transmitting pressure from surrounding rock, can not boost when pouring into cement paste, produce and scurry the slurry phenomenon.Its harm is: 1) beans gravel backfill leakiness, and slip casting is inhomogeneous, has reduced supporting capacity; 2) cement paste is wasted cement paste serious and the inflow work plane also influences working environment; 3) the grouting pressure liter is not high, does not reach the effect in concretion marginsing rock and filling slit, section of jurisdiction, has weakened the power transmission and the globality of section of jurisdiction.
3, summary of the invention
The objective of the invention is to solve rubber sealing rod installation accuracy height, cost height, difficult repair difficult, the technical barrier of stagnant water effect difference and backfill beans gravel leakiness and spillage; And provide a kind of easy installation, low, the easy repair process of cost and backfill beans gravel is closely knit and water-tight mud and the job practices of easy-operating full face tunnel boring machine.
For solving above-mentioned technical barrier, the technical solution used in the present invention is: the job practices of this full face tunnel boring machine, and it comprises rock cutting and lining segment technology, wherein: it also comprises section of jurisdiction sealing technology and backfill beans gravel and cement injection sizing process; Described section of jurisdiction sealing technology is made up of the following step: 1), by designing requirement will be prefabricated reinforced concrete segment dock; 2), packing is placed on the butt joint of the filling slot bottom that forms between the section of jurisdiction; 3), plastic sealing material is embedded in the filling slot, till filling up; 4), with of the top wedging of iron wedge, to compress plastic sealing material from filling slot; 5), with the slit of surface, high-strength cement mortar backfill section of jurisdiction butt joint, and dispose several galvanized wires; 6), between country rock and section of jurisdiction when backfill beans gravel and grout injection, wherein a part of cement paste injects in the butt joint between two sections of jurisdiction; 1), peripherally in mounted section of jurisdiction press the segmentation of 12-20 rice described backfill beans gravel and cement injection sizing process are made up of the following step:, and peripherally in the section of jurisdiction of segmentation locate to be arranged circumferentially rubber hose; 2), to give the rubber hose charged pressure be the gas of 0.2MPa, rubber hose is expanded is pressed on crag and the section of jurisdiction; 3), give the section of jurisdiction peripheral backfill beans gravel of segmentation again; 4), grout injection; 5), treat that cement paste solidifies after, to rubber hose venting and grout injection.
The material of described packing is a kind of in oil immersion mineral wool, rubberized fabric or the polyester non-woven fabric.
Described plastic sealing material is a kind of in unvulcanised butyl rubber, modified bitumen or the elastic polyurethane.
Because the present invention has adopted above-mentioned filleting sealing and has utilized the technical scheme of rubber hose segmentation backfill beans gravel and grouting, therefore compares with background technology, has the following advantages:
1), the section of jurisdiction installs and not limited by sealing: as long as the filling slot position between two sections of jurisdiction is in the scope of construction allowable error, even can slightly exceed tolerance band;
2), cost is low: 18 yuan of the every linear meter(lin.m.)s of unvulcanised butyl rubber plastic sealing material, can save the sealing material investment more than 80%;
3), improved grouting effect: during grouting, slurries can pour into simultaneously that " sealing " improved force structure with the butt joint place of rear between two sections of jurisdiction;
4), easily fill: owing to be filleting, with external force plastic sealing material hit and be pressed in the filling slot, and can repeatedly fill, till filling up.Be not subjected to the restriction of sealing material during installation, the influence that not changed by outside air temperature;
5), easily repair: when the shutoff high-strength cement mortar, defectives such as the faulting of slab ends that can form the section of jurisdiction, arrisdefect are handled together, and when defective occurring, can repair at any time;
6), easy and simple to handle: the rubber hose of two shutoff is easy to install, fix, and filling is convenient;
7), the rubber hose after the inflation can adapt to different gap, forms different shape, be pressed on scar and the prefabricated pipe section;
8), backfill beans gravel is closely knit: because after the rubber hose segmentation, the beans gravel of backfill does not have free face, so the beans gravel of backfill is closely knit;
9), water-tight mud: because rubber hose is pressed on scar and the prefabricated pipe section, cement paste can spillage and grouting pressure is raise during slip casting, has reached the effect of concretion marginsing rock and blind;
10), improved speed of application: because the rubber hose grout stop belt has been arranged, the beans gravel can improve speed of application along with driving backfill and grouting in advance, has reduced cost.
Description of drawings
Fig. 1 is the schematic diagram of water-stopping structure of the present invention;
Fig. 2 is the structural representation of backfill beans gravel of the present invention and grout injection.
The specific embodiment
Embodiment 1:
As shown in Figure 1 and Figure 2, the job practices of the full face tunnel boring machine in the present embodiment, it comprises technologies such as rock cutting and lining segment, wherein: it also comprises section of jurisdiction sealing technology and backfill beans gravel and cement injection sizing process; Section of jurisdiction sealing technology is made up of the following step:
1), prefabricated reinforced concrete segment 8 is docked by designing requirement;
2), oil immersion mineral wool 3 is placed on the butt joint 2 of filling slot 9 bottoms that form between the section of jurisdiction 8, to stop up the butt joint 2 between two sections of jurisdiction 8;
3), the plastic sealing material of unvulcanised butyl rubber (GB) 4 is embedded in the filling slot 9, till filling up;
4), iron wedge 5 is wedged the plastic sealing material of unvulcanised butyl rubber 4, to compress plastic sealing material from the napex of filling slot 9;
5), with the slits of high-strength cement mortar 6 backfill sections of jurisdiction 8 surface butt joint, and dispose 5 galvanized wires 7;
6), between country rock and section of jurisdiction 8 when backfill beans gravel 1 and grout injection, wherein a part of cement paste injects in the butt joint 2 between two sections of jurisdiction 8.
Backfill beans gravel and cement injection sizing process are made up of the following step:
1), 8 peripheral in mounted section of jurisdiction by 12 meters segmentations, and be arranged circumferentially rubber hose 10 at the 8 peripheral places, section of jurisdiction of segmentation;
2), to give rubber hose 10 charged pressures be the gas of 0.2MPa, rubber hose 10 is expanded be pressed on crag to place outward with section of jurisdiction 8;
3), give the section of jurisdiction 8 peripheral backfill beans gravels 1 of segmentation again;
4), grout injection;
5), treat that cement paste solidifies after, give rubber hose 10 venting and grout injections.
Embodiment 2:
The job practices of the full face tunnel boring machine in the present embodiment, it comprises technologies such as rock cutting and lining segment, wherein: it also comprises section of jurisdiction sealing technology and backfill beans gravel and cement injection sizing process; Section of jurisdiction sealing technology is made up of the following step:
1), prefabricated reinforced concrete segment is docked by designing requirement;
2), rubberized fabric is placed on the butt joint of the filling slot bottom that forms between the section of jurisdiction, to stop up the butt joint between two sections of jurisdiction;
3), the plastic sealing material of modified bitumen is embedded in the filling slot, till filling up;
4), the iron wedge is wedged the modified bitumen plastic sealing material, to compress plastic sealing material from the top of filling slot;
5), with the slit of surface, high-strength cement mortar backfill section of jurisdiction butt joint, and dispose 4 galvanized wires;
6), between country rock and section of jurisdiction when backfill beans gravel and grout injection, wherein a part of cement paste injects in the butt joint between two sections of jurisdiction.
Backfill beans gravel and cement injection sizing process are made up of the following step:
1), peripheral in mounted section of jurisdiction by 20 meters segmentations, and be arranged circumferentially rubber hose at peripheral place, the section of jurisdiction of segmentation;
2), to give the rubber hose charged pressure be the gas of 0.2MPa, make rubber hose expand to be pressed on outside crag and the section of jurisdiction and place;
3), give the section of jurisdiction peripheral backfill beans gravel of segmentation again;
4), grout injection;
5), treat that cement paste solidifies after, to rubber hose venting and grout injection.
Embodiment 3:
The job practices of the full face tunnel boring machine in the present embodiment, it comprises technologies such as rock cutting and lining segment, wherein: it also comprises section of jurisdiction sealing technology and backfill beans gravel and cement injection sizing process; Section of jurisdiction sealing technology is made up of the following step:
1), prefabricated reinforced concrete segment is docked by designing requirement;
2), polyester non-woven fabric is placed on the butt joint of the filling slot bottom that forms between the section of jurisdiction, to stop up the butt joint between two sections of jurisdiction;
3), the plastic sealing material of elastic polyurethane is embedded in the filling slot, till filling up;
4), the iron wedge is wedged the plastic material of elastic polyurethane, to compress plastic sealing material from the top of filling slot;
5), with the slit of surface, high-strength cement mortar backfill section of jurisdiction butt joint, and dispose 6 galvanized wires;
6), between country rock and section of jurisdiction when backfill beans gravel and grout injection, wherein a part of cement paste injects in the butt joint between two sections of jurisdiction.
Backfill beans gravel and cement injection sizing process are made up of the following step:
1), peripheral in mounted section of jurisdiction by 16 meters segmentations, and be arranged circumferentially rubber hose at peripheral place, the section of jurisdiction of segmentation;
2), to give the rubber hose charged pressure be the gas of 0.2MPa, make rubber hose expand to be pressed on outside crag and the section of jurisdiction and place;
3), give the section of jurisdiction peripheral backfill beans gravel of segmentation again;
4), grout injection;
5), treat that cement paste solidifies after, to rubber hose venting and grout injection.
The peripheral segmentation in section of jurisdiction can also be selected between 12-20 rice in addition.
Claims (3)
1, a kind of job practices of full face tunnel boring machine, it comprises rock cutting and lining segment technology, it is characterized in that: further comprising section of jurisdiction sealing technology and backfill beans gravel and cement injection sizing process; Described section of jurisdiction sealing technology is made up of the following step:
1), prefabricated reinforced concrete segment is docked by designing requirement;
2), packing is placed on the butt joint of the filling slot bottom that forms between the section of jurisdiction;
3), plastic sealing material is embedded in the filling slot, till filling up;
4), with of the top wedging of iron wedge, to compress plastic sealing material from filling slot;
5), with the slit of surface, high-strength cement mortar backfill section of jurisdiction butt joint, and dispose several galvanized wires;
6), between country rock and section of jurisdiction when backfill beans gravel and grout injection, wherein a part of cement paste injects in the butt joint between two sections of jurisdiction;
Described backfill beans gravel and cement injection sizing process are made up of the following step:
1), peripherally in mounted section of jurisdiction press the segmentation of 12-20 rice, and peripherally in the section of jurisdiction of segmentation locate to be arranged circumferentially rubber hose;
2), to give the rubber hose charged pressure be the gas of 0.2MPa, rubber hose is expanded is pressed on crag and the section of jurisdiction;
3), give the section of jurisdiction peripheral backfill beans gravel of segmentation again;
4), grout injection;
5), treat that cement paste solidifies after, to rubber hose venting and grout injection.
2, the job practices of a kind of full face tunnel boring machine according to claim 1 is characterized in that: the material of described packing is a kind of in oil immersion mineral wool, rubberized fabric or the polyester non-woven fabric.
3, the job practices of a kind of full face tunnel boring machine according to claim 1 is characterized in that: described plastic sealing material is a kind of in unvulcanised butyl rubber, modified bitumen or the elastic polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021099405A CN1166852C (en) | 2002-01-26 | 2002-01-26 | Construction mode with full cross-section tunneller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021099405A CN1166852C (en) | 2002-01-26 | 2002-01-26 | Construction mode with full cross-section tunneller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1362573A CN1362573A (en) | 2002-08-07 |
| CN1166852C true CN1166852C (en) | 2004-09-15 |
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ID=4740862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021099405A Expired - Fee Related CN1166852C (en) | 2002-01-26 | 2002-01-26 | Construction mode with full cross-section tunneller |
Country Status (1)
| Country | Link |
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| CN (1) | CN1166852C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100510314C (en) * | 2005-10-17 | 2009-07-08 | 中国石油集团川庆钻探工程有限公司 | Crack leakage gravel filling and plugging process |
| CN101614124B (en) * | 2008-06-27 | 2011-12-07 | 中铁隧道集团有限公司 | Method for synchronic construction of tunnelling of open-type hard rock tunnel boring machine and secondary lining |
| CN101705829B (en) * | 2009-10-21 | 2012-10-03 | 上海隧道工程股份有限公司 | Method for controlling quality of tunnel pipe sheet built by using shield method and pipe sheet structure |
| CN103510964B (en) * | 2013-07-31 | 2016-08-24 | 中铁隧道集团有限公司 | A kind of method when using shield formula TBM to construct to beans gravel rockfill grouting |
| CN106089245B (en) * | 2016-06-25 | 2018-02-23 | 中交一公局第三工程有限公司 | One kind postpones grouting method after being used for single shield TBM walls |
| CN107218060B (en) * | 2017-07-21 | 2023-05-16 | 苏交科集团股份有限公司 | Prefabricated lining joint of tunnel and construction method thereof |
| CN109736830A (en) * | 2019-01-10 | 2019-05-10 | 中铁建南方建设投资有限公司 | The implementation method of lateral sealing in a kind of TBM tunnel construction |
| CN110410113A (en) * | 2019-09-08 | 2019-11-05 | 天津大学前沿技术研究院有限公司 | A kind of concrete pipe sheet filleting plugging device and method for blocking |
| CN113202505B (en) * | 2021-05-29 | 2024-04-05 | 浙江神州科技化工有限公司 | Subway segment gap sealing construction process |
-
2002
- 2002-01-26 CN CNB021099405A patent/CN1166852C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1362573A (en) | 2002-08-07 |
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