CN204551551U - A kind of ground-connecting-wall seam leak detection and grouting for water plugging device - Google Patents
A kind of ground-connecting-wall seam leak detection and grouting for water plugging device Download PDFInfo
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- CN204551551U CN204551551U CN201420829695.XU CN201420829695U CN204551551U CN 204551551 U CN204551551 U CN 204551551U CN 201420829695 U CN201420829695 U CN 201420829695U CN 204551551 U CN204551551 U CN 204551551U
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Abstract
The utility model discloses the device of the leak detection of a kind of ground-connecting-wall seam and grouting for water plugging, comprise and be embedded in vertical detector tube in ground-connecting-wall seam and core pipe, the bottom of described vertical detector tube is provided with end socket, the sidewall of described vertical detector tube is provided with uniform many groups open-work, described vertical detector tube is set with and open-work group rubber sleeve one to one, described rubber sleeve is pressed in described open-work group; Described core pipe is placed down in described vertical detector tube, in the lower end of described core pipe, non retern valve is installed, be set with expansion rubber case in the bottom of described core pipe, the two ends up and down of described expansion rubber case are respectively fixed on described vertical detector tube by a location steel loop sealing.The utility model not only can accurately locate breakthrough position, carries out leak stopping targetedly, and cost is low, short construction period.
Description
Technical field
The utility model relates to a kind of leak detection and device for plugging, particularly the leak detection of a kind of ground-connecting-wall seam and grouting for water plugging device.
Background technology
Ground-connecting-wall has been applied to the space enclosing structure of underground construction more and more at large, especially under complex geological condition or ultra-deep, super foundation.And the partition sealing effect of ground-connecting-wall has very large impact to subsequent construction, the leak detection of ground-connecting-wall becomes an important content of engineering construction thus.Space enclosing structure water proof sealing effect is detected one of the items for acceptance as excavation of foundation pit in many cities.Detection method main at present mainly contains the inside and outside landing attempt water in hole and observes head method, electroosmotic drainage etc., and they have respective pluses and minuses.
Landing attempt water before running as precipitation, one of means that can detect as Leakage of Foundation Pit.Cleaning Principle is the hydraulic connection inside and outside foundation ditch, if space enclosing structure water proof is respond well, then the water level that hole outward appearance is logged well falls water mitigation in not cheated, and can draw the reliable conclusion of space enclosing structure water proof sealing effect thus.Otherwise, just illustrate to be related in water route.But this method cannot complete the detection of single seam, can only section be divided, and the information such as absolute altitude, quantity of leak source cannot be confirmed, next step plugging operation can not be instructed.Electroosmotic drainage (ECR) is a current new technology actively promoted, but due to the price of its costliness, existing market lukewarm response.
Even if detection before excavation of foundation pit prove foundation ditch inside and outside waterpower without contact, but can not ensure seepage not to occur in digging process, reason be weak seam inside and outside foundation ditch without head difference or gap little, can maintain the statusquo.And once there is seepage, the measure generally can taked comprise smear that water does not leak, welding steel, the measure such as cofferdam and drainage, the method for slip casting need be adopted to more serious situation.But no matter be vertical slip casting or horizontal grouting, the time of drawing occupied by hole is all very very long, even there will be cannot pore-forming and can not be close to the problem of leak source, can not leak stopping accurately and rapidly.
Therefore, exactly leak detection is carried out to space enclosing structure, can leak stopping quickly and accurately when Leakage of Foundation Pit, be the important measures ensureing excavation of foundation pit safety and quality.
Utility model content
The utility model provides the leak detection of a kind of ground-connecting-wall seam and grouting for water plugging device for solving in known technology the technical problem that exists, this device not only accurately can locate the position of breakthrough, and leak stopping can be carried out targetedly, also have that cost is low, the feature of short construction period simultaneously.
The technical scheme that the utility model is taked for the technical problem existed in solution known technology is: the device of the leak detection of a kind of ground-connecting-wall seam and grouting for water plugging, comprise and be embedded in vertical detector tube in ground-connecting-wall seam and core pipe, the bottom of described vertical detector tube is provided with end socket, the sidewall of described vertical detector tube is provided with uniform many groups open-work, described vertical detector tube is set with and open-work group rubber sleeve one to one, described rubber sleeve is pressed in described open-work group; Described core pipe is placed down in described vertical detector tube, in the lower end of described core pipe, non retern valve is installed, be set with expansion rubber case in the bottom of described core pipe, the two ends up and down of described expansion rubber case are respectively fixed on described vertical detector tube by a location steel loop sealing.
Described open-work is buckled with drawing pin, and described drawing pin adopts adhesive plaster to be wound around and is sealed on described vertical detector tube, and described rubber sleeve is enclosed within the outside of described adhesive plaster.
Each described open-work group comprises 4 pairs of open-works facing each other, the central axis of 2 pairs of neighbouring open-works.
Described end socket is back taper.
The spacing of adjacent two described open-work groups is 2000mm.
Described vertical detector tube is formed by many fastener for connection, and adjacent two described steel pipes are connected by pipe collar.
The advantage that the utility model has and good effect are:
1) remarkable in economical benefits
Detection method in the market has landing attempt water law, electroosmotic drainage and specific chemical detection method, relative low price be examination precipitation scheme, and drop into regard to observation well, personnel and machinery, an engineering drops into also wants more than 200,000, when Leakage of Foundation Pit, need vertical or horizontal drilling, expense is 2000 yuan/time; And input of the present utility model mainly vertical detector tube, low price, easy construction.When Leakage of Foundation Pit, the utility model can directly under enter core pipe and carry out slip casting, and core pipe can reuse, can cost saving.
2) duration can be saved
Adopt examination precipitation scheme, the cycle that foundation ditch water proof sealing effect detects is at least 20 days, and the utility model and reinforcing cage are transferred and synchronously carried out, additionally do not take the duration, and sense cycle is very short, each seam needs at most 30 minutes, and whole seam just can complete in several days.
In sum, the utility model can detect the quality of ground-connecting-wall seam by hydraulic pressure, can vertical slip casting be carried out when there being risk of leakage, simultaneously the utility model economical rationality, advanced technology, can arrange when meeting workmanship and requiring.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that vertical detector tube of the present utility model is with the plan view put under reinforcing cage after construction groove.
In figure: 1, vertical detector tube; 2, core pipe; 3, pipe collar; 4, open-work; 5, rubber sleeve; 6, expansion rubber case; 7, non retern valve; 8, end socket; 9, steel loop is located; 10, reinforcing cage; 11, ground-connecting-wall joint.
Detailed description of the invention
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 ~ Fig. 2, the device of the leak detection of a kind of ground-connecting-wall seam and grouting for water plugging, comprise and be embedded in vertical detector tube 1 in ground-connecting-wall seam and core pipe 2, the bottom of described vertical detector tube 1 is provided with end socket 8, the sidewall of described vertical detector tube 1 is provided with uniform many groups open-work 4, described vertical detector tube 1 is set with and open-work group rubber sleeve 5 one to one, described rubber sleeve 5 is pressed in described open-work group; Described core pipe 2 is placed down in described vertical detector tube 1, in the lower end of described core pipe 2, non retern valve 7 is installed, be set with expansion rubber case 6 in the bottom of described core pipe 2, the two ends up and down of described expansion rubber case 6 are respectively fixed on described vertical detector tube 1 by location steel loop 9 sealing.
In the present embodiment, described open-work 4 is buckled with drawing pin, described drawing pin adopts adhesive plaster to be wound around and is sealed on described vertical detector tube 1, and described rubber sleeve 5 is enclosed within the outside of described adhesive plaster.Each described open-work group comprises 4 pairs of open-works 4 facing each other, the central axis of 2 neighbouring open-works 4.Described end socket 8 is back taper.The spacing of adjacent two described open-work groups is 2000mm.Described vertical detector tube 1 comprises many steel pipes, and adjacent two described steel pipes are connected by pipe collar 3.
The principle that the utility model detects according to Leakage of Foundation Pit, is first lowered into vertical detector tube in the seam of ground-connecting-wall.Reach after design strength until concrete, water filling in vertical detector tube is suppressed, detect the anti-pressure ability of seam.The controlling value of hydraulic pressure calculates according to exploration report.If hydraulic pressure rising is also uniform and stable after reaching peak value, without the phenomenon diminished suddenly, static observation can be judged to be after 3 hours that seam is intact.In digging process, if there is seepage, can carry out slip casting by following core pipe, vertical detector tube, just in seam, can be looked for rapidly water route, carry out shutoff.
Rubber sleeve " can rush " and open confined pressure after pressure reaches certain value, outside water filling (slurry), and after stopping water filling (slurry), rubber sleeve sets back, and prevents plug-hole.Water or slurries can be stabilized in the region of setting by end socket.Expansion rubber case can cut off its upper and lower annular space after the pressurizing, avoids injection liquid upwards to alter.Expansion rubber case is respectively provided with a location steel loop at upper and lower two ends, when can prevent from transferring or playing depoling pipe, and expansion rubber case shift position.The non retern valve of core pipe lower end, water or slurries can only be injected laterally, and the liquid in vertical detector tube can not enter core pipe.
In the present embodiment, the built-in process of vertical detector tube can adopt following two kinds:
The first: vertical detector tube 1, two vertical detector tubes 1 of locating two layouts elongated with it in the side that ground-connecting-wall reinforcing cage 10 is adjacent with ground-connecting-wall joint 11 split at the two ends of reinforcing cage 10 width; Along with the connection of transferring disconnection reinforcing cage 10 and vertical detector tube 1 gradually of reinforcing cage 10, build along with concrete, vertical detector tube 1 is " pushed " in the seam of ground-connecting-wall automatically, is embedded in ground-connecting-wall seam.
The second: under closed width reinforcing cage after groove, in each ground-connecting-wall seam, the artificial pipe collar that adopts connects the detection pipeline section inserted in seam piecemeal, forms the vertical detector tube along the elongated setting of ground-connecting-wall seam, build along with concrete, vertical detector tube is embedded in ground-connecting-wall seam.
In the present embodiment, vertical detector tube adopts anti-extrusion, bending resistance and has the vertical welded seam steel pipe of better rigidity, to ensure to resist the impact force of watering concrete in groove.Vertical detector tube diameter should meet the maximum concrete protection thickness of reinforcing bar and hydraulic pressure testing requirement, and in the present embodiment, the diameter of vertical detector tube is 1.5 cun, and wall thickness is 3.2mm.
Open-work group line space design on vertical detector tube: with width of wall body and cement grout penetration radius for foundation, simultaneously according to the excavation of foundation pit degree of depth, wall External building thing safe class, antiseep requires and the factor such as buried depth, position, thickness, head pressure in the outer aquifer of wall considers.The position of flaw may be caused to adopt 1 meter to encrypt spacing to position, aquifer and construction, suitably can reduce open-work group spacing to below excavation of foundation pit face and non-pervious layer position.
Although be described preferred embodiment of the present utility model by reference to the accompanying drawings above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, can also make a lot of form, these all belong within protection domain of the present utility model.
Claims (6)
1. the device of ground-connecting-wall seam leak detection and grouting for water plugging, it is characterized in that, comprise and be embedded in vertical detector tube in ground-connecting-wall seam and core pipe, the bottom of described vertical detector tube is provided with end socket, the sidewall of described vertical detector tube is provided with uniform many groups open-work, described vertical detector tube is set with and open-work group rubber sleeve one to one, described rubber sleeve is pressed in described open-work group; Described core pipe is placed down in described vertical detector tube, in the lower end of described core pipe, non retern valve is installed, be set with expansion rubber case in the bottom of described core pipe, the two ends up and down of described expansion rubber case are respectively fixed on described vertical detector tube by a location steel loop sealing.
2. the device of ground-connecting-wall seam according to claim 1 leak detection and grouting for water plugging, it is characterized in that, described open-work is buckled with drawing pin, and described drawing pin adopts adhesive plaster to be wound around and is sealed on described vertical detector tube, and described rubber sleeve is enclosed within the outside of described adhesive plaster.
3. the device of ground-connecting-wall seam according to claim 1 leak detection and grouting for water plugging, is characterized in that, each described open-work group comprises 4 pairs of open-works facing each other, the central axis of 2 pairs of neighbouring open-works.
4. the device of ground-connecting-wall seam according to claim 1 leak detection and grouting for water plugging, is characterized in that, described end socket is back taper.
5. the device of ground-connecting-wall seam according to claim 1 leak detection and grouting for water plugging, is characterized in that, the spacing of adjacent two described open-work groups is 2000mm.
6. the device of ground-connecting-wall seam according to claim 1 leak detection and grouting for water plugging, is characterized in that, described vertical detector tube is formed by many fastener for connection, and adjacent two described steel pipes are connected by pipe collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420829695.XU CN204551551U (en) | 2014-12-23 | 2014-12-23 | A kind of ground-connecting-wall seam leak detection and grouting for water plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420829695.XU CN204551551U (en) | 2014-12-23 | 2014-12-23 | A kind of ground-connecting-wall seam leak detection and grouting for water plugging device |
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| CN204551551U true CN204551551U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420829695.XU Expired - Fee Related CN204551551U (en) | 2014-12-23 | 2014-12-23 | A kind of ground-connecting-wall seam leak detection and grouting for water plugging device |
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| CN (1) | CN204551551U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106088174A (en) * | 2016-08-21 | 2016-11-09 | 浙江科技学院 | A kind of soft clay area diaphram wall seepage detection system |
| CN109750795A (en) * | 2019-01-18 | 2019-05-14 | 浙江大学 | A kind of grout sleeve with detection pipe and its be in the milk plumpness detection and benefit paste-making method |
-
2014
- 2014-12-23 CN CN201420829695.XU patent/CN204551551U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106088174A (en) * | 2016-08-21 | 2016-11-09 | 浙江科技学院 | A kind of soft clay area diaphram wall seepage detection system |
| CN109750795A (en) * | 2019-01-18 | 2019-05-14 | 浙江大学 | A kind of grout sleeve with detection pipe and its be in the milk plumpness detection and benefit paste-making method |
| CN109750795B (en) * | 2019-01-18 | 2024-04-19 | 浙江大学 | Grouting sleeve with detection pipe and grouting fullness detection and slurry supplementing method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20191223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |