CN110715776A - Building enclosure leakage pre-detection device and pre-detection method thereof - Google Patents
Building enclosure leakage pre-detection device and pre-detection method thereof Download PDFInfo
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- CN110715776A CN110715776A CN201911004582.XA CN201911004582A CN110715776A CN 110715776 A CN110715776 A CN 110715776A CN 201911004582 A CN201911004582 A CN 201911004582A CN 110715776 A CN110715776 A CN 110715776A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
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Abstract
The invention provides a pre-detection device and a pre-detection method for leakage of an enclosure structure, which comprises a simulation box, wherein a first porous glass plate, a second porous glass plate and a spliced aluminum plate are sequentially arranged in the simulation box at intervals, the second porous glass plate is pasted with a reverse filtration membrane, the first porous glass plate, the second porous glass plate and the spliced aluminum plate divide the simulation tank into a water return tank, a water supply tank, an outside pit soil tank and an inside pit soil tank, grooves are arranged on two sides of the soil box outside the pit, the grooves are provided with aluminum plates capable of sliding up and down, the bottom of the water return box is provided with a plurality of water discharge holes, a plurality of salinity conductivity sensors are arranged in the soil box in the pit and connected with a data acquisition analyzer, the invention provides an envelope leakage pre-detection device capable of pre-detecting in multiple working conditions and a pre-detection method thereof.
Description
Technical Field
The invention relates to the technical field of rock and soil, in particular to a pre-detection device and a pre-detection method for leakage of an enclosure structure.
Background
The construction of soft soil areas, including underground space development and utilization, river-crossing tunnels, urban railway track traffic and other heavy projects, often involves tunnel traffic and deep foundation pit projects, however, the damages of foundation soil layers, micro confined aquifers and confined aquifers of the soft soil areas to the tunnel and the deep foundation pit projects are very common and obvious, different regions have different seepage environments, the complicated seepage environments are very likely to cause project accidents such as building envelope damage, piping, instability and the like, and groundwater seepage can cause the change of water-soil pressure at two sides of a foundation pit retaining wall and the change of a seepage field.
In conclusion, a set of containment leakage pre-inspection complete technology which is convenient to operate, economical, practical, environment-friendly and clear in theory needs to be researched, but the technology is limited to the current technical conditions, and a unified and mature technical standard does not exist for a while.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an enclosure leakage pre-detection device capable of pre-detecting in multiple working conditions and a pre-detection method thereof, and solves the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an envelope seepage preliminary examination device, includes the simulation case, the interval is equipped with first porous glass board, second porous glass board and concatenation aluminium system board in proper order in the simulation case, the last anti-filtration membrane that posts of second porous glass board, first porous glass board, second porous glass board and concatenation aluminium system board divide into return water tank, feed tank, the outer soil box in hole and the soil box in hole with the simulation case, the outer soil box both sides in hole are equipped with the recess, the recess is equipped with gliding aluminium system board from top to bottom, a plurality of wash ports have been seted up to return water tank bottom, be equipped with a plurality of salinity conductivity sensor in the soil box in the hole, salinity conductivity sensor is connected with data acquisition analyzer, salinity conductivity sensor overcoat is equipped with pvc pipe.
Preferably, the simulation box is built by organic glass and aluminum frame.
Preferably, the drainage hole is adhered with a reverse filtration membrane.
Preferably, the porous aluminum plate is detachably connected with the simulation box.
Preferably, a soil discharging opening is formed in one side of the inner soil box, and a detachable soil side plate outside the pit is arranged at the soil discharging opening.
Preferably, the drain hole is connected with a drain pipe for recovering water
Preferably, the bottom of the simulation box is provided with universal wheels.
A method for pre-detecting leakage of an enclosure structure comprises the following steps,
(1) adjusting the blockage condition of the first porous glass plate according to the actual underground water level;
(2) embedding a PVC pipe in the soil box in the pit;
(3) filling clay into the model box, and simultaneously synchronously filling water into the water supply box to ensure the saturation of the soil layer;
(4) selecting an installation mode of the enclosure structure according to working conditions, adding a sealing silica gel strip at the lap joint of the spliced aluminum plates, and changing the hole blocking condition of the spliced aluminum plates, or removing the sealing silica gel strip at the lap joint of the spliced aluminum plates and blocking the holes of the spliced aluminum plates;
(5) sliding the aluminum plate up and down or adjusting the depth of the aluminum plate inserted into the soil layer;
(6) continuously filling a soil layer, keeping the water level of the water supply tank constant, putting a tracer solution with a certain concentration into the water tank after the water drain holes are gathered to the drain pipe and the drained water is constant;
(7) simultaneously, timing measurement is synchronously carried out, a salinity conductivity sensor is inserted into a specified position in the pvc pipe, and the numerical value change of the concentration is recorded;
(8) determining concentration values of at least two points at the same depth, and deducing a leakage area of the enclosure structure according to time and concentration variation;
(9) after each test is finished, the liquid and the solid are poured out, and then the steps are repeated to carry out the test of the next working condition.
(III) advantageous effects
The invention provides a pre-detection device and a pre-detection method for leakage of an enclosure structure. The method has the following beneficial effects:
1. the device can realize that the same device detects envelope seepage state under the multiple operating mode through changing the state of concatenation aluminium system board and aluminium system board.
2. The whole device can be disassembled, and is simple to maintain, repeatable and practical.
Drawings
FIG. 1 is a perspective view of a seepage pre-inspection device for an enclosure according to the present invention;
FIG. 2 is a front view of a pre-detection device for leakage of an enclosure according to the present invention;
FIG. 3 is a top view of a pre-inspection apparatus for leakage of an enclosure according to the present invention;
FIG. 4 is a structural view of a first porous glass plate;
FIG. 5 is a structural view of a spliced aluminum panel;
FIG. 6 is a block diagram of a salinity conductivity sensor.
Description of the labeling: 1-organic glass, 2-aluminum frame, 3-water return tank, 4-water supply tank, 5-first porous glass plate, 6-second porous glass plate, 7-groove, 8-spliced aluminum plate, 9-pit outer soil box, 10-aluminum plate, 11-pit inner soil box, 12-pit outer soil side plate, 13-universal wheel, 14-water drain hole, 15-pvc pipe, 16-salt conductivity sensor, 17-data acquisition analyzer and 18-water drain pipe.
Detailed Description
An embodiment of a leakage pre-inspection device and a pre-inspection method for an enclosure structure according to the present invention will be further described with reference to fig. 1 to 6.
A building envelope seepage pre-detection device comprises a simulation box, wherein a first porous glass plate 5, a second porous glass plate 6 and a splicing aluminum plate 8 are sequentially arranged in the simulation box at intervals, a reverse filter membrane is pasted on the second porous glass plate 6, the simulation box is divided into a water return box 3, a water supply box 4, an out-pit soil box 9 and an in-pit soil box 11 by the first porous glass plate 5, the second porous glass plate 6 and the splicing aluminum plate 8, grooves 7 are arranged on two sides of the out-pit soil box 9, aluminum plates 10 capable of sliding up and down are arranged on the grooves 7, a plurality of drain holes 14 are formed in the bottom of the water return box 3, a plurality of salinity conductivity sensors 16 are arranged in the in-pit soil box 11, the salinity conductivity sensors 16 are connected with a data acquisition analyzer 17, a pvc pipe 15 is sleeved outside the salinity conductivity sensors 16, the simulation box is constructed by an organic glass aluminum material 1 and an organic glass frame 2, the anti-filtration membrane is attached to the drain hole 14, the porous aluminum plate 10 is detachably connected with the simulation box, a soil discharging port is formed in one side of the inner soil box, a detachable soil side plate 12 outside the pit is arranged at the soil discharging port, the drain hole 14 is connected with a drain pipe 18 for recovering water, and a universal wheel 13 is arranged at the bottom of the simulation box.
When the leakage of the enclosure structure is pre-detected, the blockage condition of the first porous glass plate 5 is adjusted according to the actual underground water level, a pvc pipe 15 is pre-embedded in an in-pit soil box 11, so that a salt conductivity sensor 16 can be conveniently observed, if the concentration value of the sensor changes, a leakage area appears near a specified opening position, clay is filled in a model box, meanwhile, water is synchronously injected into a water supply box 4, and the saturation degree of a soil layer is ensured, in the embodiment, the spliced aluminum plate 8 is used for simulating the working conditions of the enclosure structure with known and unknown leakage points, and can be used for researching the seepage condition of groundwater under the lapping working condition of the enclosure structure, the installation mode of the enclosure structure is selected according to the working conditions, at the moment, three working condition researches can be carried out, wherein the first working condition research is that a sealing silica gel strip is added at the lapping position of the spliced aluminum plate 8, and the hole blockage condition of the spliced aluminum plate 8 is changed, the research on two working conditions of known defect points and defect-free points can be realized; the second working condition study is that a sealing silica gel strip is removed at the lap joint of the spliced aluminum plate 8, and a hole of the spliced aluminum plate 8 is blocked; the research of the working condition of the building envelope overlap joint can be realized, the third middle working condition research is to dismantle and splice the aluminium plate 8, and the working condition of the occluded row pile is simulated by cement manufacturing to test.
Then inserting the aluminum plate 10 into the groove 7, and sliding the aluminum plate 10 up and down to a certain distance away from the bottom of the simulation box, so that the working condition that the seepage-proofing wall and the enclosure structure seep into the soil layer at different distances can be realized; or the depth of the aluminum plate 10 inserted into the soil layer is adjusted, and the influence of the impervious walls with different depths on the test result can be researched; or the aluminum plate 10 is disassembled, the test without the working condition of the impervious wall can be carried out, the test can be carried out from multiple aspects by adjusting the state of the aluminum plate 10 simulating the impervious wall up and down, the soil layer is continuously filled, the water level of the water supply tank 4 is kept constant, after the water discharge hole 14 is gathered to the water discharge pipe 18, and after the water discharge is constant, tracer solution with certain concentration is put into the water tank; the drain hole 14 can filter and recycle water through a reverse filter membrane for reuse, the reverse filter membrane is arranged on the second porous glass plate 6 to ensure that water can smoothly flow into the soil tank 9 outside the pit from the water supply tank 4, meanwhile, soil in the soil tank 9 outside the pit can not enter the water supply tank 4, timing measurement is synchronously performed, the salinity conductivity sensor 16 is inserted into a specified position in the pvc pipe 15, and the numerical change of concentration is recorded; determining concentration values of at least two points at the same depth, and deducing a leakage area of the enclosure structure according to time and concentration variation; liquid and solid are poured out after each test is completed, the soil side plate 12 outside the pit, which is detached in the embodiment, facilitates the loading, unloading and cleaning of soil layer materials, the steps are repeated to carry out the test of the next working condition, the test data can be transmitted to a computer for calculation analysis and data recording through the connection data acquisition analyzer 17, the later-stage arrangement analysis is facilitated, the pre-detection of various working conditions can be realized by the same enclosing structure leakage pre-detection device, and the whole structure is simple and easy to operate.
It should be noted that the model of the salt conductivity sensor 16 in this embodiment is NH51YF, and the salt conductivity sensor 16 has two options of a large range and a small range, wherein the large range measures seawater and the range is 0-60mg/L, and the small range measures fresh water and the range is 0-20 mg/L.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a building envelope seepage preliminary examination device, includes analog box, its characterized in that: the utility model discloses a soil box, including simulation incasement, first porous glass board, second porous glass board and concatenation aluminium system board, the simulation incasement is equipped with first porous glass board, second porous glass board and concatenation aluminium system board in proper order at the interval, the anti-filtration membrane has been posted on the second porous glass board, first porous glass board, second porous glass board and concatenation aluminium system board divide into return water tank, feed water tank, the outer soil box in hole and the hole soil box with the simulation case, the outer soil box both sides in hole are equipped with the recess, the recess is equipped with gliding aluminium system board from top to bottom, a plurality of wash ports have been seted up to return water bottom of the case portion, be equipped with a plurality of salinity conductivity sensor in the soil box in the hole, salinity conductivity sensor is connected with the data acquisition analysis appearance, salinity.
2. A containment structure leakage pre-inspection apparatus as claimed in claim 1, wherein: the simulation box is built by organic glass and aluminum frame.
3. A containment structure leakage pre-inspection apparatus as claimed in claim 1, wherein: the drain hole is adhered with a reverse filtration membrane.
4. A containment structure leakage pre-inspection apparatus as claimed in claim 1, wherein: the porous aluminum plate is detachably connected with the simulation box.
5. A containment structure leakage pre-inspection apparatus as claimed in claim 1, wherein: a soil discharge opening is formed in one side of the inner soil box, and a detachable soil side plate outside the pit is arranged at the soil discharge opening.
6. A containment structure leakage pre-inspection apparatus as claimed in claim 1, wherein: the bottom of the simulation box is provided with universal wheels.
7. A containment structure leakage pre-inspection apparatus as claimed in claim 1, wherein: the drain hole is connected with a drain pipe for recovering water.
8. A method for pre-detecting leakage of an enclosure structure is characterized by comprising the following steps: comprises the following steps of,
(1) adjusting the blockage condition of the first porous glass plate according to the actual underground water level;
(2) embedding a PVC pipe in the soil box in the pit;
(3) filling clay into the model box, and simultaneously synchronously filling water into the water supply box to ensure the saturation of the soil layer;
(4) selecting an installation mode of the enclosure structure according to working conditions, adding a sealing silica gel strip at the lap joint of the spliced aluminum plates, and changing the hole blocking condition of the spliced aluminum plates, or removing the sealing silica gel strip at the lap joint of the spliced aluminum plates and blocking the holes of the spliced aluminum plates;
(5) sliding the aluminum plate up and down or adjusting the depth of the aluminum plate inserted into the soil layer;
(6) continuously filling a soil layer, keeping the water level of the water supply tank constant, putting a tracer solution with a certain concentration into the water tank after the water drain holes are gathered to the drain pipe and the drained water is constant;
(7) simultaneously, timing measurement is synchronously carried out, a salinity conductivity sensor is inserted into a specified position in the pvc pipe, and the numerical value change of the concentration is recorded;
(8) determining concentration values of at least two points at the same depth, and deducing a leakage area of the enclosure structure according to time and concentration variation;
(9) after each test is finished, the liquid and the solid are poured out, and then the steps are repeated to carry out the test of the next working condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911004582.XA CN110715776B (en) | 2019-10-22 | 2019-10-22 | Building enclosure leakage pre-detection device and pre-detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911004582.XA CN110715776B (en) | 2019-10-22 | 2019-10-22 | Building enclosure leakage pre-detection device and pre-detection method thereof |
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| Publication Number | Publication Date |
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| CN110715776A true CN110715776A (en) | 2020-01-21 |
| CN110715776B CN110715776B (en) | 2021-03-16 |
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| CN201911004582.XA Expired - Fee Related CN110715776B (en) | 2019-10-22 | 2019-10-22 | Building enclosure leakage pre-detection device and pre-detection method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155379A (en) * | 2021-04-12 | 2021-07-23 | 同济大学 | Foundation pit support structure electric leakage detection simulation test device and test method thereof |
| CN117405306A (en) * | 2023-12-12 | 2024-01-16 | 华东交通大学 | Leakage detection device of underground structure |
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|---|---|---|---|---|
| KR20130041465A (en) * | 2011-10-17 | 2013-04-25 | 방극재 | Sealing tester of packed envelope |
| CN207408055U (en) * | 2017-11-02 | 2018-05-25 | 杭州市城市建设基础工程有限公司 | A kind of foundation pit system underground water seepage detection system |
| CN109024706A (en) * | 2018-10-26 | 2018-12-18 | 上海宝冶集团南京建筑有限公司 | A kind of foundation pit waterproof curtain breakthrough inside method for blocking |
-
2019
- 2019-10-22 CN CN201911004582.XA patent/CN110715776B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130041465A (en) * | 2011-10-17 | 2013-04-25 | 방극재 | Sealing tester of packed envelope |
| CN207408055U (en) * | 2017-11-02 | 2018-05-25 | 杭州市城市建设基础工程有限公司 | A kind of foundation pit system underground water seepage detection system |
| CN109024706A (en) * | 2018-10-26 | 2018-12-18 | 上海宝冶集团南京建筑有限公司 | A kind of foundation pit waterproof curtain breakthrough inside method for blocking |
Non-Patent Citations (1)
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| 黄国华: "水闸启闭机房渗漏原因分析与处理", 《治淮》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155379A (en) * | 2021-04-12 | 2021-07-23 | 同济大学 | Foundation pit support structure electric leakage detection simulation test device and test method thereof |
| CN117405306A (en) * | 2023-12-12 | 2024-01-16 | 华东交通大学 | Leakage detection device of underground structure |
| CN117405306B (en) * | 2023-12-12 | 2024-03-12 | 华东交通大学 | Leakage detection device of underground structure |
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| CN110715776B (en) | 2021-03-16 |
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