CN104878772A - Treating method for foundation slab leakage of deep foundation pit - Google Patents
Treating method for foundation slab leakage of deep foundation pit Download PDFInfo
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- CN104878772A CN104878772A CN201510273292.0A CN201510273292A CN104878772A CN 104878772 A CN104878772 A CN 104878772A CN 201510273292 A CN201510273292 A CN 201510273292A CN 104878772 A CN104878772 A CN 104878772A
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- french drain
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- backfill
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- grouting
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Abstract
The invention relates to a treating method for a foundation slab leakage of a deep foundation pit. The method comprises the following steps that a water leakage point is confirmed, a leaking foundation face is cleared, hole drilling is carried out, cleaning is carried out, a grouting connecting opening is installed, a grouting water stopping agent is poured in a high pressure mode, draining is carried out by a blind drain, a grouting nipple is removed, and recovery is carried out on the surface. On the perspectives of blocking and preventing, preventing and treating are carried out on the foundation slab leakage of the deep foundation pit by adopting the two major measures, namely the leaking blocking by grouting and draining by the blind drain, water stopping can be achieved by carrying out the grouting to block the water leakage point, and the condition of backfill moisture due to the fact that following working condition changing is prevented at the same time. The top face of a foundation slab is provided with the blind drain below the 37-lime earth. The treating and the preventing are carried out by adopting the mode that water seepage is lead to a plash and is discharged in an organized mode, the two schemes of the blocking and the draining are combined, the treating and the preventing are combined, and the using function of a building is guaranteed.
Description
Technical field
The present invention relates to a kind of deep foundation ditch sole plate seepage treatment method, belong to building lot and Foundation Design technical field technical field.
Background technology
The most basic effect of base pit engineering opens wide excavation to underground construction to create conditions.Foundation ditch is exist as underground engineering construction measure in early days always, as to water smash that steel concrete builds must shuttering.But along with the excavation of foundation ditch is more and more darker; area is increasing; design and the construction of foundation pit enclosure structure become increasingly complex; required theory and technology is more and more higher; surmount the category as construction ancillary method far away; the foundation ditch that unit in charge of construction does not have enough technical forces to solve complexity is stablized, is out of shape and environmental protection problem, and the intervention of research and designing unit solves theory calculate and the design problem of base pit engineering.
In deep-foundation pit engineering, sole plate is as the important component part of deep-foundation pit engineering, serious impact and govern the workmanship of deep-foundation pit engineering, in existing practice of construction, after sole plate post-poured strip shutoff, local, sole plate surface there will be irregular breakthrough, seepage place is both sides, ater-casting and other position base plate, form is irregular for being mainly, discontinuous wire, main manifestations is wet stain, substantially occur that leakage is less without open fire, there is breakthrough in base plate local, gene basis, need to take effective measures breakthrough to carry out leak stopping, but in existing solution, good measure does not solve this problem.
Summary of the invention
The object of the invention is to: for the defect of prior art, propose a kind of deep foundation ditch sole plate seepage treatment method, from " blocking up " and " preventing " two angles, slip casting plugging leaks and blind drainage two major measure are taked to carry out the process of deep foundation ditch sole plate seepage prevention and treatment, sealing is carried out with slip casting shutoff breakthrough, simultaneously for preventing the later stage from occurring that backfill is moist because operating mode changes, below sole plate end face 37 lime earth, french drain is set, the mode that the infiltration that in an organized way may occur guides water to arrange to plash outward again carries out curing and prevention, guarantee to build using function.
The technical solution adopted in the present invention is: a kind of deep foundation ditch sole plate seepage treatment method, comprises the steps:
(1), leakage point is determined: spread dry cement determination breakthrough according to wet mark;
(2), cleaning seepage basal plane: the basal plane clear water of seepage is rinsed well, keeps basal plane non sludge impurity;
(3), boring: injected hole adopts junction of the edges of two sheets of paper formula, and directly boring adopts machine drilling on the crack occurring infiltration, and drilling depth is the 1/3-1/2 of structure base slab, and the degree of depth is not less than 200mm, and the spacing of wells is 150mm ~ 200mm;
(4), cleaning: the hole after boring is cleaned, ensures in hole without impurity during boring;
(5), grouting being installed and connecing mouth: connecing mouth by installing grouting in the hole after cleaning;
(6), high pressure pouring ejection for water plugging agent: adopt polyurethane-type grout material, select to contain grand board SL-668 hydrophobicity monotype PU foaming water-stop, the polyurethane that SL-668 is is base material with hydrophobicity MDI, without water imbibition, do not shrink, form impermeability after reacting with water and urinate gastral cavity, burn into can not be formed to concrete structure and reinforcing bar and destroy;
(7), blind drainage: arrange rubble french drain on sole plate face, below backfill, outer row after the water that may ooze out drains into basement plash by french drain is organized, ensures the using function of building;
(8), grout nipple is removed: the grout nipple that early stage is arranged is carried out dismounting and takes away;
(9), surface recovery.
In the present invention: in the blind drainage in described step (7), the way of french drain is as follows:
(1), french drain material: french drain material adopts 30 ~ 50 rubbles, and french drain and dirt contact site arrange layer of non-woven fabric on french drain top, prevent backfill from entering french drain rubble gap and blocking french drain;
(2), french drain size: french drain cross section is 500x300mm, and width is mini-excavator bucket width;
(3) position that french drain is arranged, is determined: french drain is vertically arranged on below more than sole plate end face, backfill dirt, plane is not more than 50m by spacing and connects plash and arranges the main french drain in direction in length and breadth, when local directly can not connect plash, arrange short french drain to be connected with main french drain, french drain is arranged between sole plate cushion cap;
(4), plash surrounding layout french drain: plash surrounding arranges french drain continuously, and in plash wall base top absolute altitude intersection, by spacing 1m along plash surrounding drill diameter Ф 100 hole;
(5), plate top drainage layer: because current basement has completed subregion backfill construction, to non-backfill part, one deck 100mm drainage layer was increased before backfill, the thick drainage layer of 100mm arranged between plate top backfill dirt connects in length and breadth to french drain, may seep water between french drain is caused that french drain causes plash through french drain again, ponding layer adopts 30 ~ 50mm rubble, and drainage layer is applicable to not backfill dirt position.
After adopting technique scheme, beneficial effect of the present invention is: the present invention is from " blocking up " and " preventing " two angles, slip casting plugging leaks and blind drainage two major measure are taked to carry out the process of deep foundation ditch sole plate seepage prevention and treatment, sealing is carried out with slip casting shutoff breakthrough, simultaneously for preventing the later stage from occurring that backfill is moist because operating mode changes, below sole plate end face 37 lime earth, french drain is set, the mode that the infiltration that in an organized way may occur guides water to arrange to plash outward again carries out curing and prevention, two schemes are blocked up, row combines, curing and prevention is also used, guarantee the using function built.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1
A kind of deep foundation ditch sole plate seepage treatment method, comprises the steps:
(1), leakage point is determined: spread dry cement determination breakthrough according to wet mark;
(2), cleaning seepage basal plane: the basal plane clear water of seepage is rinsed well, keeps basal plane non sludge impurity;
(3), boring: injected hole adopts junction of the edges of two sheets of paper formula, and directly boring adopts machine drilling on the crack occurring infiltration, and drilling depth is the 1/3-1/2 of structure base slab, and the degree of depth is not less than 200mm, and the spacing of wells is 150mm ~ 200mm;
(4), cleaning: the hole after boring is cleaned, ensures in hole without impurity during boring;
(5), grouting being installed and connecing mouth: connecing mouth by installing grouting in the hole after cleaning;
(6), high pressure pouring ejection for water plugging agent: adopt polyurethane-type grout material, select to contain grand board SL-668 hydrophobicity monotype PU foaming water-stop, the polyurethane that SL-668 is is base material with hydrophobicity MDI, without water imbibition, do not shrink, form impermeability after reacting with water and urinate gastral cavity, burn into can not be formed to concrete structure and reinforcing bar and destroy;
(7), blind drainage: arrange rubble french drain on sole plate face, below backfill, outer row after the water that may ooze out drains into basement plash by french drain is organized, ensures the using function of building;
(8), grout nipple is removed: the grout nipple that early stage is arranged is carried out dismounting and takes away;
(9), surface recovery.
Wherein, in the blind drainage in described step (7), the way of french drain is as follows:
(1), french drain material: french drain material adopts 30 ~ 50 rubbles, and french drain and dirt contact site arrange layer of non-woven fabric on french drain top, prevent backfill from entering french drain rubble gap and blocking french drain;
(2), french drain size: french drain cross section is 500x300mm, and width is mini-excavator bucket width;
(3) position that french drain is arranged, is determined: french drain is vertically arranged on below more than sole plate end face, backfill dirt, plane is not more than 50m by spacing and connects plash and arranges the main french drain in direction in length and breadth, when local directly can not connect plash, arrange short french drain to be connected with main french drain, french drain is arranged between sole plate cushion cap;
(4), plash surrounding layout french drain: plash surrounding arranges french drain continuously, and in plash wall base top absolute altitude intersection, by spacing 1m along plash surrounding drill diameter Ф 100 hole;
(5), plate top drainage layer: because current basement has completed subregion backfill construction, to non-backfill part, one deck 100mm drainage layer was increased before backfill, the thick drainage layer of 100mm arranged between plate top backfill dirt connects in length and breadth to french drain, may seep water between french drain is caused that french drain causes plash through french drain again, ponding layer adopts 30 ~ 50mm rubble, and drainage layer is applicable to not backfill dirt position.
Above the specific embodiment of the present invention is described, but the present invention is not limited to above description.For a person skilled in the art, any equal amendment to the technical program and substitute be all within the scope of the invention.Therefore, equalization conversion done without departing from the spirit and scope of the invention and amendment, all should be encompassed in scope of the present invention.
Claims (2)
1. a deep foundation ditch sole plate seepage treatment method, is characterized in that: comprise the steps:
(1), leakage point is determined: spread dry cement determination breakthrough according to wet mark;
(2), cleaning seepage basal plane: the basal plane clear water of seepage is rinsed well, keeps basal plane non sludge impurity;
(3), boring: injected hole adopts junction of the edges of two sheets of paper formula, and directly boring adopts machine drilling on the crack occurring infiltration, and drilling depth is the 1/3-1/2 of structure base slab, and the degree of depth is not less than 200mm, and the spacing of wells is 150mm ~ 200mm;
(4), cleaning: the hole after boring is cleaned, ensures in hole without impurity during boring;
(5), grouting being installed and connecing mouth: connecing mouth by installing grouting in the hole after cleaning;
(6), high pressure pouring ejection for water plugging agent: adopt polyurethane-type grout material, select to contain grand board SL-668 hydrophobicity monotype PU foaming water-stop, the polyurethane that SL-668 is is base material with hydrophobicity MDI, without water imbibition, do not shrink, form impermeability after reacting with water and urinate gastral cavity, burn into can not be formed to concrete structure and reinforcing bar and destroy;
(7), blind drainage: arrange rubble french drain on sole plate face, below backfill, outer row after the water that may ooze out drains into basement plash by french drain is organized, ensures the using function of building;
(8), grout nipple is removed: the grout nipple that early stage is arranged is carried out dismounting and takes away;
(9), surface recovery.
2. a kind of deep foundation ditch sole plate seepage treatment method according to claim 1, is characterized in that: in the blind drainage in described step (7), the way of french drain is as follows:
(1), french drain material: french drain material adopts 30 ~ 50 rubbles, and french drain and dirt contact site arrange layer of non-woven fabric on french drain top, prevent backfill from entering french drain rubble gap and blocking french drain;
(2), french drain size: french drain cross section is 500x300mm, and width is mini-excavator bucket width;
(3) position that french drain is arranged, is determined: french drain is vertically arranged on below more than sole plate end face, backfill dirt, plane is not more than 50m by spacing and connects plash and arranges the main french drain in direction in length and breadth, when local directly can not connect plash, arrange short french drain to be connected with main french drain, french drain is arranged between sole plate cushion cap;
(4), plash surrounding layout french drain: plash surrounding arranges french drain continuously, and in plash wall base top absolute altitude intersection, by spacing 1m along plash surrounding drill diameter Ф 100 hole;
(5), plate top drainage layer: because current basement has completed subregion backfill construction, to non-backfill part, one deck 100mm drainage layer was increased before backfill, the thick drainage layer of 100mm arranged between plate top backfill dirt connects in length and breadth to french drain, may seep water between french drain is caused that french drain causes plash through french drain again, ponding layer adopts 30 ~ 50mm rubble, and drainage layer is applicable to not backfill dirt position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510273292.0A CN104878772A (en) | 2015-05-26 | 2015-05-26 | Treating method for foundation slab leakage of deep foundation pit |
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| CN201510273292.0A CN104878772A (en) | 2015-05-26 | 2015-05-26 | Treating method for foundation slab leakage of deep foundation pit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369833A (en) * | 2015-10-15 | 2016-03-02 | 昆明风行防水材料有限公司 | Grouting maintenance construction method for basement roof leakage |
| CN109457736A (en) * | 2018-11-16 | 2019-03-12 | 中铁二十三局集团有限公司 | One kind being used for underground engineering side wall and bottom plate water seepage treatment method |
| CN110344448A (en) * | 2019-07-14 | 2019-10-18 | 广东庆余堂建筑科技有限公司 | A kind of blocking method of the deep hole perfusion grouting material of basement bottom board large-scale water leakage |
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| DE3539193A1 (en) * | 1985-02-19 | 1987-06-04 | Bilfinger Berger Bau | Sealing cover for landfill sites |
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| CN203684179U (en) * | 2014-01-10 | 2014-07-02 | 中国水电顾问集团昆明勘测设计研究院有限公司 | Hidden drainage system in pipe network of power station stilling pool |
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2015
- 2015-05-26 CN CN201510273292.0A patent/CN104878772A/en active Pending
Patent Citations (6)
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| DE3539193A1 (en) * | 1985-02-19 | 1987-06-04 | Bilfinger Berger Bau | Sealing cover for landfill sites |
| CN101250879A (en) * | 2008-04-01 | 2008-08-27 | 中国第一冶金建设有限责任公司 | Method for processing bottom solum trickleing water of deep building pit |
| CN101298782A (en) * | 2008-06-13 | 2008-11-05 | 朱邃科 | Method and system for basement engineering water proof and water drain |
| CN101418569A (en) * | 2008-11-19 | 2009-04-29 | 兰州南特数码科技股份有限公司 | Optimization complex arch wall combining prefabricated arch leaf, support and major structure |
| CN101914925A (en) * | 2008-11-19 | 2010-12-15 | 兰州南特数码科技股份有限公司 | Basement by using optimized composite prefabricated arch wall as external wall |
| CN203684179U (en) * | 2014-01-10 | 2014-07-02 | 中国水电顾问集团昆明勘测设计研究院有限公司 | Hidden drainage system in pipe network of power station stilling pool |
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| 姚荣明: ""浅析工程基础底板渗漏处理及防治措施"", 《城市建设理论研究（电子版）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369833A (en) * | 2015-10-15 | 2016-03-02 | 昆明风行防水材料有限公司 | Grouting maintenance construction method for basement roof leakage |
| CN109457736A (en) * | 2018-11-16 | 2019-03-12 | 中铁二十三局集团有限公司 | One kind being used for underground engineering side wall and bottom plate water seepage treatment method |
| CN110344448A (en) * | 2019-07-14 | 2019-10-18 | 广东庆余堂建筑科技有限公司 | A kind of blocking method of the deep hole perfusion grouting material of basement bottom board large-scale water leakage |
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Application publication date: 20150902 |
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