CN102095643B - Method for testing leak stopping of tunnel joint - Google Patents
Method for testing leak stopping of tunnel joint Download PDFInfo
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- CN102095643B CN102095643B CN 201010617011 CN201010617011A CN102095643B CN 102095643 B CN102095643 B CN 102095643B CN 201010617011 CN201010617011 CN 201010617011 CN 201010617011 A CN201010617011 A CN 201010617011A CN 102095643 B CN102095643 B CN 102095643B
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Abstract
The invention relates to the field of tunnels, and in particular relates to a method for testing the leak stopping of a tunnel joint. The method comprises the following steps: respectively casting a concrete upper mould trial and a concrete lower mould trial on an upper support and a lower support, and placing an inner steel ring and an outer steel ring between the upper mould trial and the lower mould trial, wherein the side wall of the outer steel ring is provided with a grout injecting pipe, the upper mould trial is reserved with an exhaust pipe, a water inlet pipe and a grout outlet pipe; measuring the width of the joint between the upper mould trail and the lower mould trail; injecting prepared grout into the region between the inner and outer steel rings by virtue of the grout injecting pipe until the grout overflows from the grout outlet hole; and when the property of the injected grout is stable, observing whether a hydraulic pressure is maintained to be stable in a preset time by applying the hydraulic pressure to a certain value through the water inlet pipe to obtain a preliminary result of water pressure resistance of a grout injecting material. The invention has the advantages that: by applying the test device provided by the invention, the leak stopping effect of a leak stopping material can be visually judged, and the quantitative index value of deformation resistance of the leak stopping material with certain anti-deformation capability can be definitely obtained by a test by virtue of the test device.
Description
Technical field
The present invention relates to tunnel-like, be specifically related to a kind of tunnel seam plugging test method, this method can detect the validity of the lost circulation material that is used for the tunnel seam.
Background technology
The situation that the tunnel seam produces seepage is inevitable, and whether the leak stopping new material and the new technology that adopt can produce a desired effect, and need pass through verification experimental verification.
Summary of the invention
The objective of the invention is weak point according to above-mentioned prior art; The test method of a kind of tunnel seam lost circulation material is provided; This method is through the force-bearing situation of simulation tunnel seam seepage; Thereby adopt corresponding lost circulation material, can judge the actual effect of leak stopping, the platform of a test is provided for tunnel seam leak stopping from now on to the various lost circulation material straightway testings of tunnel seam seepage.
The object of the invention realizes being accomplished by following technical scheme:
A kind of tunnel seam plugging test method is characterized in that said method adopts following steps: adopt two block concrete die trials, promptly upper and lower die trial; Upper and lower die trial is built respectively on upper bracket and undersetting; It is fixing to connect supporting through four screw rods between the upper and lower bearing, between upper and lower die trial, places inside and outside steel ring, is placed with Grouting Pipe on the sidewall of outer rim; In upper testing mould, reserve three pipelines; Be gas outlet, water inlet pipe and grout outlet, steel ring encircled the interior zone that encloses in wherein gas outlet and water inlet pipe passed to, and said grout outlet passes to the zone between the inside and outside steel ring; Measure the joint gap between the upper and lower die trial; The slurries that configure are injected in the zone between the inside and outside steel ring through said Grouting Pipe, have slurries to overflow, stop slip casting until slurry outlet; After treating institute's injection slurry stable in properties, apply water pressure to a certain size, observe water pressure and can keep stable at the appointed time, thereby the hydraulic pressure resistance performance of injecting paste material is made preliminary conclusion through water inlet pipe.
Preset certain thickness annular rubber ring between inside and outside steel ring and upper testing mould is in order to reduce the concentration of local stress between steel ring and the upper testing mould.
Before the slip casting, with the interim shutoff seam of the quick hardening cement outside.
Advantage of the present invention is; Through above-mentioned test unit, can make judgement to the leak stopping effect of lost circulation material intuitively, simultaneously for the lost circulation material that possesses certain non-deformability; Can pass through above-mentioned test unit, clearly draw the quantization index value of its resistance to deformation through test.
Description of drawings
Fig. 1 is a perspective view of the present invention;
Fig. 2 overlooks relative position relation structural representation page or leaf for the inside and outside steel ring of the present invention;
Fig. 3 is a Facad structure synoptic diagram of the present invention.
Embodiment
Through embodiment characteristic of the present invention and other correlated characteristic are done further explain below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
Shown in Fig. 1-3, label 1-13 representes respectively: Grouting Pipe 1, upper bracket 2, gas outlet 3, water inlet pipe 4, grout outlet 5, upper testing mould 6, screw rod 7, lower testing mould 8, undersetting 9, outer rim 10, interior steel ring 11, screw rod 12, nut 13.
The tunnel seam plugging test method that present embodiment relates to adopts following steps:
Adopt two block concrete die trials; Be upper testing mould 6, lower testing mould 8, what upper bracket 2 and undersetting 9 all adopted is iron plate, and upper testing mould 6 is built on the bottom surface of upper bracket 2; Lower testing mould 8 is built on the end face of undersetting 9; Upper and lower bearing 2, between 9 through four screw rods 12, that nut 13 connects supporting is fixing, steel ring 11, outer rim 10 are placed with Grouting Pipe 1 between upper testing mould 6, lower testing mould 8, placing on the sidewall of outer rim 10; In upper testing mould 1, reserve three pipelines; Be gas outlet 3, water inlet pipe 4 and grout outlet 5, the interior zone that 11 rings of steel ring enclosed in wherein gas outlet 3 passed to water inlet pipe 4 is in the zone in grout outlet 5 passes between steel ring 11 and the outer rim 10.
Preset certain thickness annular rubber ring between interior steel ring 10, outer rim 11 and upper testing mould 6 is in order to reduce the concentration of local stress between steel ring and the upper testing mould.
Turn nut and be fixed upper and lower die trial temporarily, and, record 3 values at least along circumference with the joint gap between the upper and lower die trial of vernier caliper measurement;
Prepare the elastic epoxy slurries to scale, pour in the grouting pump then.Smear a little quick hardening cement on interior steel ring 10 surfaces, flow into the pore that interior steel ring is blocked water inlet pipe 4, gas outlet 3 in order to prevent water sample elastic epoxy slurries.Place upper and lower die trial, need note avoiding the pore of Grouting Pipe 1 this moment with the interim shutoff seam of the quick hardening cement outside.
Connect Grouting Pipe 1, then Grouting Pipe 1 is linked to each other with grouting equipment, beginning slip casting is injected into the slurries that configure in the zone between the inside and outside steel ring through said Grouting Pipe, has slurries to overflow until slurry outlet.The slip casting flexible pipe is bent upwards and uses the iron wire colligation, in case slurries ooze out from grouting hole;
After treating that the elastic epoxy slurries solidify basically, remove the quick hardening cement of outer rim 10 seam crossings, wait for about 14 days of elastic epoxy slurry material stable in properties.
Carry out the pressurization of device again, promptly apply water pressure to 0.3MPa, observe water pressure and in 2 hours, can keep stable through water inlet pipe 4;
Pressurize after 2 hours, the record experimental phenomena is made preliminary conclusion to the hydraulic pressure resistance performance of the injecting paste material of elastic epoxy slurries.
Whether turn the nut at four screw rod tops in turn, make upper testing mould 6 slow rising 0.5mm, use the vernier caliper measurement joint gap, guarantee that new joint gap reaches the requirement of new operating mode, observing has percolating water phenomenon again.
Claims (3)
1. a tunnel seam plugging test method is characterized in that said method adopts following steps: adopt two block concrete die trials, promptly upper and lower die trial; Upper and lower die trial is built respectively on upper bracket and undersetting; It is fixing to connect supporting through four screw rods between the upper and lower bearing, between upper and lower die trial, places inside and outside steel ring, is placed with Grouting Pipe on the sidewall of outer rim; In upper testing mould, reserve three pipelines; Be gas outlet, water inlet pipe and grout outlet, steel ring encircled the interior zone that encloses in wherein gas outlet and water inlet pipe passed to, and said grout outlet passes to the zone between the inside and outside steel ring; Measure the joint gap between the upper and lower die trial; The slurries that configure are injected in the zone between the inside and outside steel ring through said Grouting Pipe, have slurries to overflow, stop slip casting until the pore of said grout outlet; After treating institute's injection slurry stable in properties, apply water pressure to a certain size, observe water pressure and can keep stable at the appointed time, thereby the hydraulic pressure resistance performance of injecting paste material is made preliminary conclusion through water inlet pipe.
2. a kind of tunnel according to claim 1 seam plugging test method is characterized in that preset certain thickness annular rubber ring between said inside and outside steel ring and upper testing mould, in order to reduce the concentration of local stress between said inside and outside steel ring and the upper testing mould.
3. a kind of tunnel according to claim 1 seam plugging test method is characterized in that before the slip casting, with the interim shutoff seam of the quick hardening cement outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010617011 CN102095643B (en) | 2010-12-31 | 2010-12-31 | Method for testing leak stopping of tunnel joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010617011 CN102095643B (en) | 2010-12-31 | 2010-12-31 | Method for testing leak stopping of tunnel joint |
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| Publication Number | Publication Date |
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| CN102095643A CN102095643A (en) | 2011-06-15 |
| CN102095643B true CN102095643B (en) | 2012-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010617011 Active CN102095643B (en) | 2010-12-31 | 2010-12-31 | Method for testing leak stopping of tunnel joint |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374645B (en) * | 2014-11-25 | 2017-09-15 | 河海大学 | A kind of flexible barrier body seam construction mechanical dynamic test instrument and test method |
| CN104865012A (en) * | 2015-05-08 | 2015-08-26 | 同济大学 | Tunnel joint waterproof performances test apparatus and test method |
| CN104949809B (en) * | 2015-06-01 | 2017-12-19 | 北京市水利规划设计研究院 | For the device for the sealing for detecting tunnel expansion joint |
| CN105910763A (en) * | 2016-05-31 | 2016-08-31 | 上海市隧道工程轨道交通设计研究院 | Device for testing water tightness of flexible waterproof layer at deformation joint |
| CN106706436A (en) * | 2016-12-21 | 2017-05-24 | 北京交通大学 | Device for detecting water pressure resistance of rubber waterstop |
| CN111504796B (en) * | 2020-04-29 | 2023-03-17 | 李俊 | Local compressive property detection device for pressure vessel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2441137Y (en) * | 2000-09-14 | 2001-08-01 | 西南石油学院 | Blockage testing device |
| CN101832140A (en) * | 2010-04-20 | 2010-09-15 | 北京交通大学 | Testing method of water pressure distribution law of subsea tunnel lining |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6370712A (en) * | 1986-09-12 | 1988-03-30 | Tokyo Electric Power Co Inc:The | Tester for consolidation and water permeation |
| JPH05296898A (en) * | 1992-04-24 | 1993-11-12 | Sekisui Chem Co Ltd | Method and apparatus for testing water pressure resistance of tube body |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2441137Y (en) * | 2000-09-14 | 2001-08-01 | 西南石油学院 | Blockage testing device |
| CN101832140A (en) * | 2010-04-20 | 2010-09-15 | 北京交通大学 | Testing method of water pressure distribution law of subsea tunnel lining |
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| CN102095643A (en) | 2011-06-15 |
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Application publication date: 20110615 Assignee: Shanghai same Municipal Engineering Construction Co., Ltd. Assignor: Shanghai Tunnel Engineering Railway Transportation Design Institute Contract record no.: 2016310000040 Denomination of invention: Method for testing leak stopping of tunnel joint Granted publication date: 20120829 License type: Exclusive License Record date: 20160902 |
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