CN102108873A - High-polymer grouting method for rapidly disposing percolating water in tunnel - Google Patents
High-polymer grouting method for rapidly disposing percolating water in tunnel Download PDFInfo
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- CN102108873A CN102108873A CN 200910227697 CN200910227697A CN102108873A CN 102108873 A CN102108873 A CN 102108873A CN 200910227697 CN200910227697 CN 200910227697 CN 200910227697 A CN200910227697 A CN 200910227697A CN 102108873 A CN102108873 A CN 102108873A
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Abstract
The invention discloses a high-polymer grouting method for rapidly disposing percolating water in a tunnel. Aiming at the problem of the percolating water in the tunnel, the high-polymer grouting method comprises the following steps: high-polymer materials are injected to water percolating positions, rapidly swell in size after reaction and are solidified to rapidly fill and plug gaps of the water percolating positions, thus achieving the purpose of rapidly disposing the defect of the percolating water in the tunnel. Compared with the traditional tunnel defect disposing method, the high-polymer grouting technology developed in the invention for rapidly disposing the defect of the percolating water in a tunnel has the advantages of good disposal effect, quickness in construction, no requirement of maintenance, strong pertinence, good controllability and the like. The high-polymer grouting method is obviously creative in the aspects of technological principle and construction method, provides a novel approach to rapid, durable, economic and practical tunnel maintenance, is successfully applied to the defect disposal of the percolating water in the tunnel, shows great economic and social benefits and has broad development and application prospects.
Description
Technical field
The invention belongs to the tunnel maintenance maintenance technique, relate in particular to the tunnel percolating water high polymer grouting technology of punishment fast.
Background technology
At present in part highway and railway tunnel that China has built or built, owing to reasons such as design and constructions, in various degree exist various diseases, comparatively commonly leak, tunnel lining is come to nothing behind etc.When the tunnel passes or close water bearing ground, constantly be subjected to phreatic osmosis, as the waterproof and the drainage imperfection of lining cutting, underground water will be invaded the tunnel, and tunnel percolating water disease takes place.Tunnel percolating water is stable to the tunnel, facility, traffic safety, surface structures and tunnel ambient water environment produce many harmful effects even threat in the hole, influence internal construction and ancillary facility, reduce application life, will jeopardize the operation security of tunnel and underground construction when serious.The origin cause of formation of therefore correct these diseases of understanding is also utilized mature technology and new material, and efficient, convenient, good all kinds of diseases of regulation are safely guaranteed the durable, unimpeded of operation tunnel, seem particularly important.
Construction of tunnel percolating water form mainly shows as three kinds of forms, and the seepage of seepage promptly, the seepage of seam and face can be divided into slowly again according to the seepage speed and to ooze, ooze soon, to leak and water burst.Therefore, the principle that will specifically treat as the case may be of the percolating water disease in tunnel is handled.For tunnel infiltration several improvement technology commonly used ways such as surperficial shutoff, shallow bore hole slip casting, chemical grouting and pipe laying ejectment are arranged in the engineering at present, other engineering solution is all extended from this several method basically.The subject matter that exists is as follows:
(1) when the processing infiltration is not too serious, no matter take which kind of method, all be to paste, to block up, such processing mode has just solved seepage problem in appearance from the tunnel, the crack of lining cutting and lining cutting back may exist in the problem of coming to nothing and not be resolved, after a period of time, the seepage problem in tunnel can reappear again.
(2) though and traditional grouting method can play the effect that shutoff crack and filling are come to nothing to a certain extent, but be limited by the performance of material, after slip casting a period of time, material meeting solidification shrinkage, the tunnel comes to nothing and can reappear, and this hides some dangers for for later seepage problem recurrence.
(3) improvement method construction technology is complicated, and the implementation of each scheme all needed than the long engineering time, and this can comparatively seriously influence the construction or the normal operation generation in tunnel, and can't carry out shutoff fully for more serious big issue.
(4) because water response class high polymer material after meeting water chemical reaction could take place, under the bigger or big water burst situation of hydraulic pressure, be difficult to prove effective
Therefore, press for a kind of fast waterproof blocking method of exploitation and come the treating tunnel water leakage disease.
Non-aqueous reaction class high polymer grouting technology is the foundation rapid reinforcement technology that new development is in recent years got up.This technology is by injection many component high polymers material in ground, utilizes the characteristic that volume expands and solidifies rapidly behind the high polymer material generation chemical reaction, reaches consolidated subsoil, fills the purpose of coming to nothing or promoting the floor.At present, non-aqueous reaction class high polymer grouting technology is mainly used in the ground stabilization and the road maintenance of industry and civilian construction.At present domestic exploitation about tunnel percolating water disease punishment high polymer technology still is in the starting developing stage, and existing research is confined to water response class high polymer material mostly.Dispose non-aqueous reaction class high polymer grouting technology about the tunnel seepage and do not see relevant report.
Summary of the invention
The object of the invention is the punishment problem at tunnel percolating water disease, develops a kind of new non-aqueous reaction class high polymer grouting method, for percolating water disease punishment in tunnel provides advanced, efficient, economic, practical technical measures.
The present invention is achieved by the following technical solutions:
A kind of tunnel percolating water is punished the high polymer grouting method fast, leakage problem at the tunnel, to percolating water position injection high polymer material, the rapid expansion curing of volume after material reacts, shutoff is filled in space, percolating water position, tunnel rapidly, thereby reach the purpose of quick treating tunnel water leakage disease.
Basic construction technology is:
(1) bore injected hole at a certain distance in the percolating water position, hole depth is determined according to tunnel surrounding and liner structure situation;
(2) Grouting Pipe under in injected hole for big water burst mouth, is set up geotechnological cloth bag;
(3) inject high polymer material by Grouting Pipe to the percolating water position, high polymer material reacts rapidly, and volume expansion is solidified, and fills the space, the shutoff infiltration.
When partial points or slit infiltration, concrete implementation step is:
(1) bores injected hole.At percolating water position, tunnel, at the infiltration point, or bore injected hole with a determining deviation along the infiltration slit, hole depth is according to the structures shape of lining cutting or country rock, and boring is wanted and can be connected with penetrating passage;
(2) Grouting Pipe under.Grouting Pipe under in injected hole, Grouting Pipe can be PPR pipe or metal tube;
(3) carry out high polymer grouting.Inject high polymer material by Grouting Pipe to lining cutting or country rock seepage part, high polymer material generation chemical reaction, expansion curing is filled percolating water space and cavity rapidly, thus quick blocking percolating water.
When sweat, concrete implementation step is:
(1) bores injected hole.On infiltration face, bore injected hole according to vertical and horizontal with a determining deviation, hole depth is according to the structures shape of lining cutting or country rock;
(2) Grouting Pipe under.Grouting Pipe under in injected hole, Grouting Pipe are PPR pipe or metal tube;
(3) carry out high polymer grouting.Inject high polymer material by Grouting Pipe to the percolating water position, high polymer material generation chemical reaction, expansion curing is filled percolating water space and cavity rapidly, thus quick blocking percolating water.
When big water burst, concrete implementation step is:
(1) with hoop geotechnological cloth bag openend is fixed on hollow steel pipe one end;
(2) with adhesive tape or cord geotechnological cloth bag is bundled into strip;
(3) hold the hollow steel pipe other end, the geotechnological cloth bag of tying up put into the water burst mouth, put into again simultaneously one not with the Grouting Pipe of geotechnological cloth bag at the water burst mouth, Grouting Pipe is put into the water burst mouth degree of depth will exceed geotechnological cloth bag;
(4) inject the multicomponent high polymer material by hollow steel pipe in geotechnological cloth bag, high polymer material expands rapidly in geotechnological cloth bag and solidifies, thus quick blocking water burst mouth;
(5) again by not with the Grouting Pipe of geotechnological cloth bag, inject the multicomponent high polymer material in the water burst passage, high polymer material expands rapidly in the water burst passage and solidifies, thus quick blocking water burst passage.
The diameter of described geotechnological cloth bag and length can produce plurality of specifications according to the design of issue concrete condition; The hollow metal tube diameter is generally 1.6cm, can be fixed according to requirement of engineering, and length is fixed according to requirement of engineering; According to the diameter of steel pipe and geotechnological cloth bag, can select the hoop of different size for use.
Compare with traditional tunnel defect punishment technology, the tunnel percolating water disease punishment high polymer grouting technology of the present invention's exploitation has following advantage:
(1) punishment is effective.The high polymer material reaction of injection is fast, good endurance, and water resistance is good, and has elasticity preferably;
(2) quick construction does not need health.Material is injected the intensity that can form in back 15 minutes more than 90%, the traffic of can letting pass.Compare with traditional tunnel defect punishment method, the high polymer grouting technology of the present invention's exploitation can be saved the duration more than 70%;
(3) with strong points, controllability is good.The characteristic that volume expands voluntarily behind the patent utilization high polymer material generation chemical reaction of the present invention, reach fill come to nothing, purpose such as shutoff infiltration, and its density and intensity can be regulated and control according to requirement of engineering after the material cured.Therefore, compare with traditional mud jacking method, the high polymer grouting technology of the present invention's exploitation has better targeted and controllability.
In sum, the tunnel percolating water disease high polymer grouting technology of punishing fast of the present invention's exploitation is compared with traditional tunnel defect punishment method, all has obvious innovation aspect know-why and the job practices, started quick, durable, economic, practical tunnel maintenance new way, and be successfully applied to the percolating water disease punishment in tunnel, demonstrate huge economic and social benefits and wide development and application prospect.
Description of drawings
Fig. 1 geotechnique cloth bag is fixed in hollow steel pipe one end schematic diagram;
Fig. 2 geotechnique cloth bag is bundled into the strip schematic diagram;
Geotechnological cloth bag that Fig. 3 will tie up and Grouting Pipe are put into water burst mouth schematic diagram;
Fig. 4 high polymer sealing slip casting shutoff water burst mouth construction schematic diagram;
Water burst passage construction schematic diagram is filled in Fig. 5 high polymer sealing slip casting.
The specific embodiment
Embodiment: the tunnel percolating water of the present invention's exploitation is punished the high polymer grouting method fast, leakage problem at the tunnel, to percolating water position injection high polymer material, the rapid expansion curing of volume after material reacts, shutoff is filled in space, percolating water position, tunnel rapidly, thereby reach the purpose of quick treating tunnel water leakage disease;
Basic construction technology is:
(1) bore injected hole at a certain distance in the percolating water position, hole depth is determined according to tunnel surrounding and liner structure situation;
(2) Grouting Pipe under in injected hole for big water burst mouth, is set up geotechnological cloth bag;
(3) inject high polymer material by Grouting Pipe to the percolating water position, high polymer material reacts rapidly, and volume expansion is solidified, and fills the space, the shutoff infiltration.
Concrete constructure scheme has following several:
(1) when partial points or slit infiltration, concrete implementation step is:
(1) bores injected hole; At percolating water position, tunnel, at the infiltration point, or bore injected hole with a determining deviation along the infiltration slit, hole depth is according to the structures shape of lining cutting or country rock, and boring is wanted and can be connected with penetrating passage;
(2) Grouting Pipe under; Grouting Pipe under in injected hole, Grouting Pipe can be PPR pipe or metal tube;
(3) carry out high polymer grouting; Inject high polymer material by Grouting Pipe to lining cutting or country rock seepage part, high polymer material generation chemical reaction, expansion curing is filled percolating water space and cavity rapidly, thus quick blocking percolating water.
(2) when sweat, concrete implementation step is:
(1) bores injected hole; On infiltration face, bore injected hole according to vertical and horizontal with a determining deviation, hole depth is according to the structures shape of lining cutting or country rock;
(2) Grouting Pipe under; Grouting Pipe under in injected hole, Grouting Pipe are PPR pipe or metal tube;
(3) carry out high polymer grouting; Inject high polymer material by Grouting Pipe to the percolating water position, high polymer material generation chemical reaction, expansion curing is filled percolating water space and cavity rapidly, thus quick blocking percolating water.
(3) when big water burst, concrete implementation step is:
(1) with hoop 2 geotechnological cloth bag 3 openends is fixed on hollow steel pipe 1 one ends, as shown in Figure 1;
(2) with adhesive tape or cord 4 geotechnological cloth bag 3 is bundled into strip, as shown in Figure 2;
(3) hold hollow steel pipe 1 other end, the geotechnological cloth bag of tying up 3 put into water burst mouth 7, put into again simultaneously one not with the Grouting Pipe 5 of geotechnological cloth bag at water burst mouth 7, Grouting Pipe 5 is put into water burst mouth 7 degree of depth will exceed geotechnological cloth bag 3, as shown in Figure 3;
(4) in geotechnological cloth bag 3, inject multicomponent high polymer material 9 by hollow steel pipe 1, high polymer material 9 expands rapidly in geotechnological cloth bag 3 and solidifies, and water burst 6 is along with the expansion of high polymer material 9 in the geotechnological cloth bag 3, and flow is decreased to gradually and stops, thereby quick blocking water burst mouth 7, as shown in Figure 4;
(5) again by not with the Grouting Pipe 5 of geotechnological cloth bag, inject multicomponent high polymer material 9 in the water burst passage, high polymer material 9 expands rapidly in the water burst passage and solidifies, thus quick blocking water burst passage, and reinforce the country rock 8 that seeps water, as shown in Figure 5.
The diameter of above-mentioned geotechnological cloth bag 3 and length can produce plurality of specifications according to the design of issue concrete condition; Hollow steel pipe 1 diameter and length are decided according to requirement of engineering; According to the diameter of hollow steel pipe 1 and geotechnological cloth bag 3, can select the hoop 2 of different size for use.
Claims (4)
1. a tunnel percolating water is punished the high polymer grouting method fast, it is characterized in that: at the leakage problem in tunnel, to percolating water position injection high polymer material, the rapid expansion curing of volume after material reacts, shutoff is filled in space, percolating water position, tunnel rapidly, thereby reach the purpose of quick treating tunnel water leakage disease;
Basic construction technology is:
(1) bore injected hole at a certain distance in the percolating water position, hole depth is determined according to tunnel surrounding and liner structure situation;
(2) Grouting Pipe under in injected hole for big water burst mouth, is set up geotechnological cloth bag;
(3) inject high polymer material by Grouting Pipe to the percolating water position, high polymer material reacts rapidly, and volume expansion is solidified, and fills the space, the shutoff infiltration.
2. tunnel according to claim 1 percolating water is punished the high polymer grouting method fast, it is characterized in that: when partial points or slit infiltration, concrete implementation step is:
(1) bore injected hole: at percolating water position, tunnel, at the infiltration point, or bore injected hole along the infiltration slit with a determining deviation, hole depth is according to the structures shape of lining cutting or country rock, and boring is wanted and can be connected with penetrating passage;
(2) Grouting Pipe under: Grouting Pipe under in injected hole, Grouting Pipe can be PPR pipe or metal tube;
(3) carry out high polymer grouting: inject high polymer material by Grouting Pipe to lining cutting or country rock seepage part, high polymer material generation chemical reaction, expansion curing is filled percolating water space and cavity rapidly, thus quick blocking percolating water.
3. tunnel according to claim 1 percolating water is punished the high polymer grouting method fast, it is characterized in that: when sweat, concrete implementation step is:
(1) bore injected hole: on infiltration face, bore injected hole according to vertical and horizontal with a determining deviation, hole depth is according to the structures shape of lining cutting or country rock;
(2) Grouting Pipe under: Grouting Pipe under in injected hole, Grouting Pipe are PPR pipe or metal tube;
(3) carry out high polymer grouting: inject high polymer material by Grouting Pipe to the percolating water position, high polymer material generation chemical reaction, expansion curing is filled percolating water space and cavity rapidly, thus quick blocking percolating water.
4. tunnel according to claim 1 percolating water is punished the high polymer grouting method fast, it is characterized in that: when big water burst, concrete implementation step is:
(1) with hoop geotechnological cloth bag openend is fixed on hollow steel pipe one end;
(2) with adhesive tape or cord geotechnological cloth bag is bundled into strip;
(3) hold the hollow steel pipe other end, the geotechnological cloth bag of tying up put into the water burst mouth, put into again simultaneously one not with the Grouting Pipe of geotechnological cloth bag at the water burst mouth, Grouting Pipe is put into the water burst mouth degree of depth will exceed geotechnological cloth bag;
(4) inject the multicomponent high polymer material by hollow steel pipe in geotechnological cloth bag, high polymer material expands rapidly in geotechnological cloth bag and solidifies, thus quick blocking water burst passway;
(5) again by not with the Grouting Pipe of geotechnological cloth bag, inject the multicomponent high polymer material in the water burst passage, high polymer material expands rapidly in the water burst passage and solidifies, thus quick blocking water burst passage.
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