CN107780405A - The quick method for searching and repairing diaphragm seal gas leakage in vacuum precompressed soft foundation processing - Google Patents
The quick method for searching and repairing diaphragm seal gas leakage in vacuum precompressed soft foundation processing Download PDFInfo
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- CN107780405A CN107780405A CN201610726370.2A CN201610726370A CN107780405A CN 107780405 A CN107780405 A CN 107780405A CN 201610726370 A CN201610726370 A CN 201610726370A CN 107780405 A CN107780405 A CN 107780405A
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- diaphragm seal
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention is specifically a kind of quick method for searching and repairing diaphragm seal gas leakage in vacuum precompressed soft foundation processing；It is characterized in that：It is included in the region division suspicion area that diaphragm seal gas leakage occurs, by medium coarse sand cushion thickness on the film in suspicion area clearly to a small foundation ditch is formed, the medium coarse sand cleared out, naturally into dam, is placed mark post in centre position, poured water into foundation ditch in suspicion area surrounding；After water surface calmness, observed, if finding, the water surface has bubble emersion or forms small whirlpool, and water level decreasing in the unit interval, then can determine that there is diaphragm seal breaking point in the suspicion area, damage location is bubble emersion or the position for forming small whirlpool；Leak source repairs damaged part after finding.The present invention utilizes the principle vacuumized, by observation, can quickly and accurately search diaphragm seal leak source position, meanwhile, diaphragm seal breakage hole can effectively, be thoroughly repaired after damaged part is found, it is ensured that vacuumize the construction quality in region.
Description
Technical field
The present invention relates to building foundation engineering construction field, is specifically at a kind of quick lookup and reparation vacuum precompressed soft foundation
The method of diaphragm seal gas leakage in reason.
Background technology
In Pearl River Delta area, the original geology and geomorphology situation of construction project is poor, mostly sea-land interbedding facies alluvial plain, fish pond
Gathered with apron beach, predominantly the strand such as mud, cohesive soil and sandy soils type soft soil foundation, its water content is big, compressibility
High, low bearing capacity, so usually carrying out basement process using vacuum preloading construction technique makes soil body compression and intensity enhancing, with full
Sufficient design requirement.
Emphasis in the whether fine or not always vacuum preloading construction technique of vacuumizing effect, and after gas leakage occurs for diaphragm seal
Lookup for leak source is difficult point therein again.Due to the particularity of vacuum preloading technique, in sand laying construction on carrying out film,
The walking back and forth of machinery, manually carried out between leveling operation, diaphragm seal and geotextiles using spade or diaphragm seal and diaphragm seal it
Between be mingled with stone, may all damage diaphragm seal causes vacuum system to fail.When searching leak source, due to vacuumizing construction area pole
Extensively, it and can not be searched using plant equipment, dig investigation so need to additionally put into a large amount of manpowers and carry out blanket type, expend big
After the amount time finds out leak source, but it is not thorough due to repairing so that and damaged area is chronically at film and pushes hypodynamic state, no
But the construction effect of vacuum preloading technique is greatly reduced, and constrains the duration, and substantially increases construction cost.
The content of the invention
It is simple and convenient to operate, time-saving and efficiency, can efficiently and quickly locates it is an object of the present invention to provide a kind of technique
Manage the operational method of diaphragm seal gas leakage.
In order to achieve the above object, the present invention is realized in：
A kind of quick method for searching and repairing diaphragm seal gas leakage in vacuum precompressed soft foundation processing, including
Step 1, the region of diaphragm seal gas leakage is occurring, finding pressure gauge under the film of pressure index decline, its monitoring range is being drawn
It is divided into several suspicion areas, each suspicion area length of side is no more than 20m；
Step 2, the method using manual cleaning, by medium coarse sand cushion thickness on the film in suspicion area clearly to 10~20cm of residue, shape
Into a small foundation ditch, to ensure the accuracy of measurement, the substrate after cleaning should be as far as possible smooth, the gradient is avoided the occurrence of, in clearing out
Coarse sand, naturally into dam, height of dam about 50cm, to strengthen its impermeability, can optionally mix appropriate mud in suspicion area surrounding；
Step 3, small foundation ditch centre position place a mark post with a scale, it is then past for reading the data of water level decreasing
Poured water in small foundation ditch；
Step 4, after the water surface calms down, proceed by observation, the water surface has bubble emersion or forms small whirlpool if finding, and single
Water level decreasing in the time of position, then it can determine that there is diaphragm seal breaking point in the suspicion area, damage location is bubble emersion or forms small whirlpool
The position in whirlpool；
When step 5, leak source repair damaged part after finding, handled in two kinds of situation,
Step 5.1, when damaged dimension of opening is less than 10mm × 10mm, sizing is made with the two-sided foam tapes of EVA and geotextiles
Repairing patch, after finding out damaged hole, directly against it is upper sizing repairing paste and compressed；
Step 5.2, when damaged dimension of opening is more than 10mm × 10mm, be cut out the diaphragm seal more bigger than dimension of opening and geotechnique
Cloth, diaphragm seal repair sheets are recycled to be bonded for the diaphragm seal of repairing, geotextiles and damaged diaphragm seal.
The present invention is using the principle vacuumized, if suspicion area has leak source, the water level in the range of it can decline, and leak source
Position has bubble or small-sized whirlpool produces, and by observation, can quickly and accurately search diaphragm seal leak source position, meanwhile, looking into
Diaphragm seal breakage hole can effectively, be thoroughly repaired after going out damaged part, it is ensured that vacuumize the construction quality in region.
Brief description of the drawings
Fig. 1 is present invention construction schematic diagram one.
Fig. 2 is present invention construction sectional drawing one.
Fig. 3 is single suspect region partial enlarged drawing.
Embodiment
The present invention is further illustrated below by way of specific embodiment.
As shown in Figure 1, Figure 2 and Figure 3, a kind of quick side for searching and repairing diaphragm seal gas leakage in vacuum precompressed soft foundation processing
Method, including
Step 1, the region of diaphragm seal gas leakage is occurring, finding pressure gauge 1 under the film of pressure index decline, its monitoring range is being drawn
It is divided into several suspicion areas, each suspicion area length of side is no more than 20m；
Step 2, the method using manual cleaning, by the thickness of medium coarse sand bed course 4 on the film in suspicion area clearly to 10~20cm of residue,
A small foundation ditch is formed, to ensure the accuracy of measurement, the substrate after cleaning should be as far as possible smooth, avoids the occurrence of the gradient, clears out
Medium coarse sand, naturally into dam 2, the high about 50cm in dam 2, to strengthen its impermeability, can optionally mix appropriate silt in suspicion area surrounding
Mud；
Step 3, small foundation ditch centre position place a mark post 3 with a scale, it is then past for reading the data of water level decreasing
Poured water in small foundation ditch；
Step 4, after the water surface calms down, proceed by observation, the water surface has bubble emersion or forms small whirlpool if finding, and single
Water level decreasing in the time of position, then it can determine that there is diaphragm seal breaking point in the suspicion area, damage location is bubble emersion or forms small whirlpool
The position in whirlpool；
When step 5, leak source repair damaged part after finding, handled in two kinds of situation,
Step 5.1, when damaged dimension of opening is less than 10mm × 10mm, sizing is made with the two-sided foam tapes of EVA and geotextiles
Repairing patch, after finding out damaged hole, directly against it is upper sizing repairing paste and compressed；
Step 5.2, when damaged dimension of opening is more than 10mm × 10mm, be cut out the diaphragm seal more bigger than dimension of opening and geotechnique
Cloth, diaphragm seal repair sheets are recycled to be bonded for the diaphragm seal of repairing, geotextiles and damaged diaphragm seal.
The present invention is using the principle vacuumized, if suspicion area has leak source, the water level in the range of it can decline, and leak source
Position has bubble or small-sized whirlpool produces, and by observation, can quickly and accurately search diaphragm seal leak source position, meanwhile, looking into
Diaphragm seal breakage hole can effectively, be thoroughly repaired after going out damaged part, it is ensured that vacuumize the construction quality in region.
Claims (1)
1. a kind of quick method for searching and repairing diaphragm seal gas leakage in vacuum precompressed soft foundation processing, it is characterized in that：Including
Step 1, the region of diaphragm seal gas leakage is occurring, finding pressure gauge under the film of pressure index decline, its monitoring range is being drawn
It is divided into several suspicion areas, each suspicion area length of side is no more than 20m；
Step 2, the method using manual cleaning, by medium coarse sand cushion thickness on the film in suspicion area clearly to 10~20cm of residue, shape
Into a small foundation ditch, to ensure the accuracy of measurement, the substrate after cleaning should be as far as possible smooth, the gradient is avoided the occurrence of, in clearing out
Coarse sand, naturally into dam, 30 ~ 50cm of height of dam, to strengthen the impermeability of dam body, mud is mixed into medium coarse sand in suspicion area surrounding；
Step 3, small foundation ditch centre position place a mark post with a scale, it is then past for reading the data of water level decreasing
Poured water in small foundation ditch；
Step 4, after the water surface calms down, proceed by observation, the water surface has bubble emersion or forms small whirlpool if finding, and single
Water level decreasing in the time of position, then it can determine that there is diaphragm seal breaking point in the suspicion area, damage location is bubble emersion or forms small whirlpool
The position in whirlpool；
When step 5, leak source repair damaged part after finding, handled in two kinds of situation,
Step 5.1, when damaged dimension of opening is less than 10mm × 10mm, sizing is made with the two-sided foam tapes of EVA and geotextiles
Repairing patch, after finding out damaged hole, directly against it is upper sizing repairing paste and compressed；
Step 5.2, when damaged dimension of opening is more than 10mm × 10mm, be cut out the diaphragm seal more bigger than dimension of opening and geotechnique
Cloth, diaphragm seal repair sheets are recycled to be bonded for the diaphragm seal of repairing, geotextiles and damaged diaphragm seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610726370.2A CN107780405B (en) | 2016-08-26 | 2016-08-26 | Quickly search and repair the method that film air leakage point is sealed in vacuum precompressed soft foundation processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610726370.2A CN107780405B (en) | 2016-08-26 | 2016-08-26 | Quickly search and repair the method that film air leakage point is sealed in vacuum precompressed soft foundation processing |
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| Publication Number | Publication Date |
|---|---|
| CN107780405A true CN107780405A (en) | 2018-03-09 |
| CN107780405B CN107780405B (en) | 2019-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610726370.2A Active CN107780405B (en) | 2016-08-26 | 2016-08-26 | Quickly search and repair the method that film air leakage point is sealed in vacuum precompressed soft foundation processing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109706913A (en) * | 2019-01-18 | 2019-05-03 | 广东交通职业技术学院 | Method for processing foundation based on vacuum and Surcharge Preloading Method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000144706A (en) * | 1998-11-06 | 2000-05-26 | Maruyama Kogyo Kk | Soft ground stabilization |
| CN102323002A (en) * | 2011-08-12 | 2012-01-18 | 天津二十冶建设有限公司 | Combined vacuum and surcharge preloading diaphragm seal internal pressure automatic alarm system |
| CN105002937A (en) * | 2015-06-30 | 2015-10-28 | 中国二十冶集团有限公司 | Damage finding device for vacuum-surcharge preloading sealing membrane |
-
2016
- 2016-08-26 CN CN201610726370.2A patent/CN107780405B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000144706A (en) * | 1998-11-06 | 2000-05-26 | Maruyama Kogyo Kk | Soft ground stabilization |
| CN102323002A (en) * | 2011-08-12 | 2012-01-18 | 天津二十冶建设有限公司 | Combined vacuum and surcharge preloading diaphragm seal internal pressure automatic alarm system |
| CN105002937A (en) * | 2015-06-30 | 2015-10-28 | 中国二十冶集团有限公司 | Damage finding device for vacuum-surcharge preloading sealing membrane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109706913A (en) * | 2019-01-18 | 2019-05-03 | 广东交通职业技术学院 | Method for processing foundation based on vacuum and Surcharge Preloading Method |
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| Publication number | Publication date |
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| CN107780405B (en) | 2019-09-13 |
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