CN102031788B - Deep well precipitation waterproof construction method of waterproof design-free basement - Google Patents
Deep well precipitation waterproof construction method of waterproof design-free basement Download PDFInfo
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- CN102031788B CN102031788B CN2010105782948A CN201010578294A CN102031788B CN 102031788 B CN102031788 B CN 102031788B CN 2010105782948 A CN2010105782948 A CN 2010105782948A CN 201010578294 A CN201010578294 A CN 201010578294A CN 102031788 B CN102031788 B CN 102031788B
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Abstract
The invention discloses a deep well precipitation waterproof construction method of a waterproof design-free basement, comprising the following steps of: excavating a plurality of deep wells with the depth reaching a bed rock strongly-weathered layer on the periphery of the basement as channels for releasing the pressure of underground water; reducing the pressure of the underground water on a base plate of the basement by utilizing the water-repellent performance of clay; drilling an observation hole at the free point of the base plate of the traditional basement; deciding to directly construct the waterproof layer or infuse cement slurry on a crushed gravel course in a low-pressure slow injecting mode according to the condition that whether the water-repellent performances of various layers of clay on the base plate of the traditional basement sufficiently exert actions or not; further reducing the pressure of the underground water and simultaneously increasing the weight of the base plate of the basement so as to improve the structural strength of the base plate of the traditional basement to resist the water pressure; and after the upper surface of the base plate of the basement is dried, constructing on the waterproof layer and a protection layer according to the conventional method. The method is suitable for the precipitation waterproof construction of the basement with favorable water permeability in the bed rock strongly-weathered layer or a pebbly sand layer in the geologic report, has no damages to the traditional structure and meets the requirements of building energy saving, economy and practicability.
Description
Technical field
The present invention relates to a kind of built construction thing basis and transform reinforcing technique, particularly a kind of basement precipitation water-proof construction method.
Background technology
Because the deficiency of geological mapping report limitation and Construction unit's fund input, many building basements do not carry out the basement structure design by waterproof requirement; Cause underground soil at the middle and upper levels backwater pour in basement, basement can't normally use; The conventional treatment of prior art is to entrust designing institute to design adjustment again, increases steel concrete waterproof beam slab, need abolish the part original structure; Bigger to the overall structure security implication; And to reduce the basement space height, and it is bigger to inject capital into, and the activity duration is longer.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists; A kind of no waterproofing design basement deep-well precipitation water-proof construction method is provided; This method is applicable to has the argillic horizon that blocks water, the severely-weathered layer of basement rock or the sand pebble layer water permeability precipitation waterproof construction of basement preferably on the severely-weathered layer of basement rock in the geologic report; Original structure is not destroyed at all, meet building energy conservation and economic and practical requirement.
The technical scheme that solves the problems of the technologies described above is: a kind of no waterproofing design basement deep-well precipitation water-proof construction method; Being applicable in the geologic report has the argillic horizon that blocks water, the severely-weathered layer of basement rock or the sand pebble layer water permeability precipitation waterproof construction of basement preferably on the severely-weathered layer of basement rock, this method is that the deep-well through reaching severely-weathered layer of basement rock or sand pebble layer in many mouthfuls of degree of depth of basement periphery excavation is that the precipitation well is as discharging the groundwater pressure passage; Utilize the groundwater pressure of the block-water performance reduction basement bottom board of clay; 1～3 peep hole is bored in random reconnaissance on existing basement bottom board then; Whether the block-water performance according to each layer clay under the existing basement bottom board plays one's part to the full to determine it is directly to carry out construction of waterproof layer again; Still adopt low pressure to annotate mode slowly and between hardcore bed and basement bottom board, pour into cement paste; Further reduce groundwater pressure; Strengthen the basement bottom board ballast simultaneously; To improve the structural strength of existing basement bottom board opposing water pressure, treat basement bottom board upper surface drying after, carry out waterproofing course and topping construction by routine again.
Its further technical scheme is: this job practices comprises following construction sequence:
A, discharge ground water pressure: leave by every interval 10-15 rice at the basement periphery that to dig the deep-well that the many mouthfuls of degree of depth reach the severely-weathered layer of basement rock be that the precipitation well is as discharging the water pressure passage;
Whether B, inspection ground have ponding, if ponding is arranged, then get into the C1 step, if no ponding then gets into the C2 step;
C1, bore 1～3 peep hole in the random reconnaissance of basement bottom board, inspection pours in phreatic head height, when head height is in 1 meter scope, then gets into the D1 step, when head height more than 1 meter the time, then get into the D2 step;
C2, bore 1～3 peep hole, go into, then directly get into step e,, then get into the C1 step again if there is swelling to go into like swelling under the insight not in the random reconnaissance of basement bottom board;
D1, grouting: on the argillic horizon that blocks water, pour into cement paste between hardcore bed and the basement bottom board, the groundwater table of basement is reduced to back entering E step under the base plate;
D2, show that this basement can not carry out the precipitation waterproof construction with this method, can only rely on the basement bottom board structurally waterproof; Must carry out structural strengthening and repairing to former basement again;
E, treat basement bottom board upper surface drying after, carry out the construction of waterproofing course and topping by routine.
In said D1, the grouting step; The grouting degree of depth is in 1.5 meters scopes at the bottom of the plate; Adopt low pressure to annotate mode slowly, will grout in argillic horizon and the macadam and make it to combine together, with the block water compactness of argillic horizon and macadam of raising with clay and rubble as cementitious material; The grout hole spacing is between 3 meters * 3 meters～5 meters * 5 meters, and grouting highly is 100 meters and reduces to 0.4 meter gradually, successively decreases with the grouting degree of depth; Emit slurry to stop until adjacent grout hole; Adopt the mode of drawing water to reduce the groundwater level height to basement bottom board before the grouting.
In said A, the release ground water pressure step: the precipitation well that reaches the severely-weathered layer of basement rock in many mouthfuls of degree of depth of basement periphery excavation is the pore-forming mode that adopts machinery or hand excavation's pore-forming, and the diameter of precipitation well, size or shape are any; But backfill filtering material or pipe laying in the hole.
It is few that the present invention does not have the infusion of financial resources of waterproofing design basement deep-well precipitation water-proof construction method, and the time weak point does not destroy original structure at all, meets building energy conservation and economic and practical requirement; For handling similar engineering a kind of novel treatment measures are provided; The problems referred to above that existing prior art exists have been solved preferably.
Below, in conjunction with accompanying drawing and embodiment the technical characterictic of the present invention's no waterproofing design basement deep-well precipitation water-proof construction method is further described.
Description of drawings
Fig. 1: no waterproofing design basement deep-well precipitation water-proof construction method sketch map.
Among the figure:
1-basis lithosphere, the severely-weathered layer of 2-basement rock, the 3-argillic horizon that blocks water, 4-hardcore bed, 5-C10 plain concrete cushion layer, the former steel bar concrete deck of 6-, 7-precipitation well, 8-diversion gutter.
The specific embodiment
A kind of no waterproofing design basement deep-well precipitation water-proof construction method; Being applicable in the geologic report has the argillic horizon that blocks water, the severely-weathered layer of basement rock or the sand pebble layer water permeability precipitation waterproof construction of basement preferably on the severely-weathered layer of basement rock, its method is: the precipitation well through reaching the severely-weathered layer of basement rock in many mouthfuls of degree of depth of basement periphery excavation is as discharging the groundwater pressure passage; Utilize the water pressure of the block-water performance reduction basement bottom board of clay; Peep hole is bored in random reconnaissance on existing basement bottom board then; According to the decision that whether plays one's part to the full of the block-water performance of each layer clay under the existing basement bottom board, determine it is directly to carry out construction of waterproof layer again; Still adopt low pressure to annotate mode slowly and between hardcore bed and basement bottom board, pour into cement paste; Further reduce water pressure; Strengthen the basement bottom board ballast simultaneously; Improved the structural strength of existing basement bottom board opposing water pressure, treat basement bottom board upper surface drying after, carry out waterproofing course and topping construction by routine again; This method specific embodiment has following two kinds.
Embodiment one:
A kind of no waterproofing design basement deep-well precipitation water-proof construction method, being applicable to has the argillic horizon that blocks water, the severely-weathered layer of basement rock or the sand pebble layer water permeability precipitation waterproof construction of basement preferably on the severely-weathered layer of basement rock in the geologic report, and it comprises following construction sequence:
A, discharge ground water pressure: dig precipitation well that many mouthfuls of degree of depth of spacing distance excavation of a bite well reach the severely-weathered layer of basement rock as discharging the groundwater pressure passage by every interval 10-15 rice distance at the basement periphery;
Whether B, inspection basement ground have ponding; If ponding is arranged, brought into play certain function though show the block-water performance of each layer clay under the basement bottom board, because of groundwater table higher; Pressure the distribution situation big or argillic horizon that blocks water is undesirable; Only the block-water performance with natural clay is not enough to the groundwater table highland is reduced under the basement bottom board, at this moment, then gets into the C1 step;
C1, bore 1～3 peep hole in the random reconnaissance of basement bottom board, inspection pours in phreatic head height, when head height is in 1 meter scope, then gets into the D1 step;
D1, grouting: on the argillic horizon that blocks water, pour into cement mortar between hardcore bed and the basement bottom board, the groundwater table of basement is reduced to back entering E step under the base plate;
E: after treating basement bottom board upper surface drying, carry out the construction of watertight composition and protective layer routinely.
In said D1, the grouting step; Described cement paste is to adopt cement to join the cement paste that suitable quantity of water is processed; The grouting degree of depth is in 1.5 meters scopes at the bottom of the plate; Adopt low pressure to annotate mode slowly, will grout in block water argillic horizon and the macadam and make it to combine together, with the block water compactness of argillic horizon and macadam of raising with clay and rubble as cementitious material; The grout hole spacing is between 3 meters * 3 meters～5 meters * 5 meters, and grouting highly is 1 meter and reduces to 0.4 meter gradually, successively decreases with the grouting degree of depth; Emit slurry to stop until adjacent grout hole; Adopt the mode of drawing water to reduce the groundwater level height to basement bottom board before the grouting.
At present embodiment step C1, at 1～3 peep hole of the random reconnaissance brill of basement bottom board; Inspection pours in the phreatic head height process; When head height more than 1 meter the time; Then get into the D2 step: show that this basement can not carry out the precipitation waterproof construction with this method, can only rely on the basement bottom board structurally waterproof; Must carry out structural strengthening and repairing to former basement again.
Embodiment two:
A kind of no waterproofing design basement deep-well precipitation water-proof construction method; Being applicable to has severely-weathered layer of the thicker argillic horizon that blocks water, basement rock or the sand pebble layer water permeability precipitation waterproof construction of basement preferably on the severely-weathered layer of basement rock in the geologic report, it comprises following construction sequence:
A, release ground water pressure: is that precipitation well as discharge water pressure passage by every interval 10-15 apart from the deep-well that many mouthfuls of degree of depth of excavation reach the severely-weathered layer of basement rock at the basement periphery;
Whether B, inspection ground have ponding, if no ponding shows that the block-water performance of each layer clay under the basement bottom board plays one's part to the full, then get into the C2 step;
C2, bore 1～3 peep hole, go into, then need not be in the milk, directly get into the E step like swelling under the insight not in the random reconnaissance of existing basement bottom board;
E: after treating basement bottom board upper surface drying, carry out the construction of watertight composition and protective layer routinely.
The present invention does not have waterproofing design basement deep-well precipitation water-proof construction method and is preferably in and carries out season wet season.
The steps A of construction method of the present invention, discharge ground water pressure: the precipitation well that reaches the severely-weathered layer of basement rock in many mouthfuls of degree of depth of basement periphery excavation can adopt the pore-forming mode of machinery or hand excavation's pore-forming, and the diameter of precipitation well, size or shape can be any; But backfill filtering material or pipe laying in the hole;
Grouting among the embodiment of the invention step D1 can be adopted chemistry pressurization grouting, to improve the impervious ability of the soil body.
Gutter in the accompanying drawing can be a various pipes, and like pvc pipe, cast iron pipe etc. also can adopt concrete or masonry gutter etc.
Claims (4)
1. no waterproofing design basement deep-well precipitation water-proof construction method; Being applicable in the geologic report has the argillic horizon that blocks water, the severely-weathered layer of basement rock or the sand pebble layer water permeability precipitation waterproof construction of basement preferably on the severely-weathered layer of basement rock, it is characterized in that: this method is that the deep-well through reaching the severely-weathered layer of basement rock in many mouthfuls of degree of depth of basement periphery excavation is that the precipitation well is as discharging the groundwater pressure passage; Utilize the groundwater pressure of the block-water performance reduction basement bottom board of clay; 1～3 peep hole is bored in random reconnaissance on existing basement bottom board then; Whether the block-water performance according to each layer clay under the existing basement bottom board plays one's part to the full to determine it is directly to carry out construction of waterproof layer again; Still adopt low pressure to annotate mode slowly and between hardcore bed and basement bottom board, pour into cement paste; Further reduce groundwater pressure; Strengthen the basement bottom board ballast simultaneously; To improve the structural strength of existing basement bottom board opposing water pressure, treat basement bottom board upper surface drying after, carry out waterproofing course and topping construction by routine again.
2. according to right 1 described no waterproofing design basement deep-well precipitation water-proof construction method, it is characterized in that: this job practices comprises following construction sequence:
A, release ground water pressure: is that precipitation well as discharge water pressure passage by every interval 10-15 rice apart from the deep-well that many mouthfuls of degree of depth of excavation reach the severely-weathered layer of basement rock at the basement periphery;
Whether B, inspection ground have ponding, if ponding is arranged, then get into the C1 step, if no ponding then gets into the C2 step;
C1, bore 1～3 peep hole in the random reconnaissance of basement bottom board, inspection pours in phreatic head height, when head height is in 1 meter scope, then gets into the D1 step, when head height more than 1 meter the time, then get into the D2 step;
C2, bore 1～3 peep hole, go into, then directly get into step e,, then get into the C1 step again if there is swelling to go into like swelling under the insight not in the random reconnaissance of basement bottom board;
D1, grouting: on the argillic horizon that blocks water, pour into cement paste between hardcore bed and the basement bottom board, the groundwater table of basement is reduced to back entering E step under the base plate;
D2, show that this basement can not carry out the precipitation waterproof construction with this method, can only rely on the basement bottom board structurally waterproof; Must carry out structural strengthening and repairing to former basement again;
E, treat basement bottom board upper surface drying after, carry out the construction of waterproofing course and topping by routine.
3. no waterproofing design basement deep-well precipitation water-proof construction method according to claim 2; It is characterized in that: in said D1, the grouting step; The grouting degree of depth is in 1.5 meters scopes at the bottom of the plate; Employing low pressure is annotated mode slowly, will grout in block water argillic horizon and the macadam to make it to combine together with clay and rubble as cementitious material, to improve the compactness of argillic horizon and macadam; The grout hole spacing is between 3 meters * 3 meters～5 meters * 5 meters, and grouting highly is 100 meters and reduces to 0.4 meter gradually, successively decreases with the grouting degree of depth; Emit slurry to stop until adjacent grout hole; Adopt the mode of drawing water to reduce the groundwater level height to basement bottom board before the grouting.
4. no waterproofing design basement deep-well precipitation water-proof construction method according to claim 2; It is characterized in that: in said A, the release ground water pressure step: the precipitation well that reaches the severely-weathered layer of basement rock in many mouthfuls of degree of depth of basement periphery excavation is the pore-forming mode that adopts machinery or hand excavation's pore-forming, and the diameter of precipitation well, size or shape are any; Backfill filtering material or pipe laying in the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105782948A CN102031788B (en) | 2010-12-08 | 2010-12-08 | Deep well precipitation waterproof construction method of waterproof design-free basement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105782948A CN102031788B (en) | 2010-12-08 | 2010-12-08 | Deep well precipitation waterproof construction method of waterproof design-free basement |
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| CN102031788A CN102031788A (en) | 2011-04-27 |
| CN102031788B true CN102031788B (en) | 2012-08-08 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103696432A (en) * | 2013-12-31 | 2014-04-02 | 青建集团股份公司 | Dewatering blind ditch on outer side of external wall of basement |
| CN109594590A (en) * | 2018-12-29 | 2019-04-09 | 江西省城建建设集团有限公司 | Building basement waterproof treatment structure and its construction method under the conditions of a kind of rock-mass |
| CN112593612B (en) * | 2020-11-19 | 2022-04-12 | 浙江二十冶建设有限公司 | Existing building peripheral precipitation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3501128A1 (en) * | 1985-01-15 | 1986-07-17 | Gkn Keller Gmbh, 6050 Offenbach | SEALING AND THEIR MANUFACTURING METHOD FOR THE CREATION OF STRENGTHABLE, DEGRADABLE GROUND DIMENSIONS FOR THE EXECUTION OF UNDERGROUND CONSTRUCTIONS, LIKE CAVITY BUILDINGS OR THE LIKE. |
| CN101148884A (en) * | 2007-10-30 | 2008-03-26 | 山东天齐置业集团股份有限公司 | Waterproof and plugging construction method for precipitation well in foundation pit |
| CN201103127Y (en) * | 2007-08-24 | 2008-08-20 | 上海外高桥地质工程有限公司 | Water stop locking notch tube of underground continuous wall |
| CN101550701A (en) * | 2009-04-30 | 2009-10-07 | 中冶实久建设有限公司 | Method and device for treating partial water burst of foundation ditch |
| CN101586341A (en) * | 2009-06-16 | 2009-11-25 | 陆观宏 | Water sealing method for civil engineering groundwork |
| CN101694100A (en) * | 2009-06-17 | 2010-04-14 | 朱奎 | Waterproof construction of basement soleplate and construction method thereof |
-
2010
- 2010-12-08 CN CN2010105782948A patent/CN102031788B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3501128A1 (en) * | 1985-01-15 | 1986-07-17 | Gkn Keller Gmbh, 6050 Offenbach | SEALING AND THEIR MANUFACTURING METHOD FOR THE CREATION OF STRENGTHABLE, DEGRADABLE GROUND DIMENSIONS FOR THE EXECUTION OF UNDERGROUND CONSTRUCTIONS, LIKE CAVITY BUILDINGS OR THE LIKE. |
| CN201103127Y (en) * | 2007-08-24 | 2008-08-20 | 上海外高桥地质工程有限公司 | Water stop locking notch tube of underground continuous wall |
| CN101148884A (en) * | 2007-10-30 | 2008-03-26 | 山东天齐置业集团股份有限公司 | Waterproof and plugging construction method for precipitation well in foundation pit |
| CN101550701A (en) * | 2009-04-30 | 2009-10-07 | 中冶实久建设有限公司 | Method and device for treating partial water burst of foundation ditch |
| CN101586341A (en) * | 2009-06-16 | 2009-11-25 | 陆观宏 | Water sealing method for civil engineering groundwork |
| CN101694100A (en) * | 2009-06-17 | 2010-04-14 | 朱奎 | Waterproof construction of basement soleplate and construction method thereof |
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