CN106894431A - Hypogee hole body waterproof construction precipitation processing method under a kind of water resource enriched environment - Google Patents
Hypogee hole body waterproof construction precipitation processing method under a kind of water resource enriched environment Download PDFInfo
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- CN106894431A CN106894431A CN201710093450.3A CN201710093450A CN106894431A CN 106894431 A CN106894431 A CN 106894431A CN 201710093450 A CN201710093450 A CN 201710093450A CN 106894431 A CN106894431 A CN 106894431A
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- hole
- precipitation
- hypogee
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/20—Restraining of underground water by damming or interrupting the passage of underground water by displacing the water, e.g. by compressed air
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses hypogee hole body waterproof construction precipitation processing method under a kind of water resource enriched environment, the process such as graded sand and stone and concrete is filled out including setting precipitation hole, suction pump, cover plate, filling, efficiently solve under underground space foundation bottom shallow-layer water source enriched environment, the inner product Water Spreading at the positions such as sump, elevator, cushion cap foundation well below bedding plane located underground is enlivened, on the one hand, the operation in the environment of Wu Mingshui of job site waterproof layer cannot be ensured, cause waterproof layer to be constructed in shaft bottom basal plane；On the other hand; ponding makes that sump, elevator, cushion cap foundation well occur isolation when pouring in the structural concrete of base plate, packing is poor, thickness of protection tier does not reach design requirement etc.; so as to cause steel bar corrosion, concrete carbonization etc. to threaten the problem of structure safety; it is that the anhydrous operating condition of favourable basic unit has been striven in waterproof layer laying and concreting, the construction quality of waterproof layer and concrete structure has been effectively ensured.
Description
Technical field
Prevent the present invention relates to hypogee hole body under hypogee waterproof technique, more particularly to a kind of water resource enriched environment
Water Dewatering processing method.
Background technology
Base pit dewatering, is always the emphasis of building underground engineering construction, and Method on Dewatering of Foundation Pit is more, including bright ditch adds and catchments
Well precipitation, Application of light well point precipitation etc., but above dewatering mode, are not enough to exclude sump, elevator, cushion cap foundation well completely
Deng the inside ponding constructed below bed course absolute altitude, and due to the uncontrollability of field condition, substrate surface water is easily in lower accumulation.
When substrate shallow-layer abundant water, before waterproof layer laying, temporary drainage is carried out to sump, elevator, cushion cap foundation well etc.
Lay waterproof layer immediately afterwards, its technology room is every service speed still not as good as substrate shallow seated groundwater to sump, elevator, cushion cap foundation well
Deng recharge speed.Case above, it is possible to create tripartite's face rings：
First, influenceed by ponding, waterproof construction basic unit condition cannot meet ensure construction of waterproof layer quality without bright water base
Layer require, may (or even bright water) excessive because of substrate humidity cause waterproof coating layer cannot film forming, waterproof roll overlap joint it is not firm
Deng；
Secondly as the influence of ground water pressure, even if waterproof layer can hand over circle closed, waterproof layer holds in the case of unshielded
Easily destroyed by ground water pressure.
Again, ponding make sump, elevator, cushion cap foundation well the structural concrete of base plate occur when pouring from
Analyse, packing is poor, thickness of protection tier does not reach design requirement etc., so as to cause steel bar corrosion, concrete carbonization etc. to threaten
Structure safety.
The content of the invention
The technical problem to be solved in the present invention is hypogee sump, elevator under a kind of water resource enriched environment of invention
Well, cushion cap foundation well etc. cheat body waterproof construction dewatering measure tectonic sieving and construction treating methods, can effectively overcome current foundation ditch
Defect in precipitation technology, it is ensured that the requirement without bright water of construction of waterproof layer quality.
To achieve these goals, the present invention is adopted the following technical scheme that：
Hypogee hole body waterproof construction precipitation processing method, comprises the following steps under a kind of water resource enriched environment：
Step a. sets precipitation hole in hole body bottom, and precipitation sets suction pump in hole；
Step b. precipitation hole top sets cover plate, the prefabricated sleeve pipe of cover plate central or reserving hole, suction pump cable and drainpipe
Passed from sleeve pipe or hole；Hole body bottom waterproof layer is laid to sleeve pipe or hole periphery and is closed up；
Before step c. pours hypogee hole body, the drainpipe and cable of suction pump are cut off；
Step d. fills out graded sand and stone from cover plate central sleeve pipe or hole to filling in precipitation hole；
Step e. cheated from cover plate central sleeve pipe or hole to precipitation in casting concrete to hole body base plane, then with speed
Solidifying cement seal cover plate central sleeve pipe or hole, maintain an equal level with cover plate upper surface
Step f. lays the waterproof layer of cover plate central sleeve pipe or hole position and is overlapped with hole body bottom waterproof layer；
Step g. pours hole body structural concrete.
Preferably, described protective layer uses pea gravel concreten or cement mortar.
Further, when using pea gravel concreten, its thickness is not less than 50mm to described protective layer；When using cement bonded sand
During slurry, its thickness is not less than 20mm.
Preferably, in described step a after precipitation is cheated to be set, hole foot mat is spread in precipitation hole immediately and earth-retaining is built
Wall, and smear earth-retaining mortar or concrete.
Preferably, described precipitation hole depth is not less than described suction pump height+100mm.
Preferably, 20% of the cumulative volume of described graded sand and stone not less than the total measurement (volume) in described precipitation hole.
Preferably, before described step f also includes overlap joint, place is cleared up and is dried to hole body bottom waterproof layer overlap
The step of reason.
Preferably, described hole body is one kind in sump, elevator, cushion cap foundation well.
Precipitation hole is set in the bottom at the positions such as building sump, elevator, cushion cap foundation well, is placed in precipitation hole and drawn water
Pump, for extracting well internal surface layer construction ponding and the abundant underground water of substrate shallow-layer.Precipitation hole top sets cover plate, and cover plate central is prefabricated
Sleeve pipe or reserving hole, suction pump cable and drainpipe are passed from sleeve pipe.The waterproofs such as sump, elevator, cushion cap foundation well
Laid to periphery of spigot during layer construction and closed up, lay the separation layer and protective layer of waterproof layer.Before structural concrete is poured, cut-out row
Water pump cable and pipeline, are filled in hole from sleeve pipe to precipitation fill out graded sand and stone immediately, and Reperfu- sion concrete, finally sealed sleeve pipe is poured
Build sump structural concrete.
The present invention is efficiently solved under underground space foundation bottom shallow-layer water source enriched environment, bedding plane located underground with
Under the inner product Water Spreading at the position such as sump, elevator, cushion cap foundation well enliven, on the one hand, job site cannot be ensured
Waterproof layer operation in the environment of Wu Mingshui, causes waterproof layer to be constructed in shaft bottom basal plane；On the other hand, ponding makes to catchment
There is isolation when pouring in the structural concrete of base plate in well, elevator, cushion cap foundation well, packing is poor, cover to reinforcement is thick
Degree does not reach design requirement etc., is waterproof layer paving so as to cause steel bar corrosion, concrete carbonization etc. to threaten the problem of structure safety
If having striven for the anhydrous operating condition of favourable basic unit with concreting, the construction of waterproof layer and concrete structure is effectively ensured
Quality.
Brief description of the drawings
Fig. 1 is that hypogee hole body pours pre-structure schematic diagram；
Fig. 2 is that hypogee hole body pours rear structural representation；
Wherein, 1- precipitation hole；11- precipitation cheats crater wall；12- precipitation hole hole bottom；13- graded sand and stones；14- cheats inner concrete；
2- suction pumps；21- cables and drainpipe；3- cover plates；31- sleeve pipes；32- accelerated cements；4- waterproof layers；5- protective layers；6- precipitation
Hole top waterproof layer；7- cheats body structural concrete.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
As shown in figure 1, setting precipitation hole 1 in hypogee Keng Ti bottoms, suction pump 2 is placed in precipitation hole 1, for extracting
Well endosexine construction ponding and hole bottom phreatic water.The top of precipitation hole 1 sets cover plate 3, the prefabricated sleeve pipe 31 in the center of cover plate 3 or reserved
Hole, suction pump cable and drainpipe 21 are passed from sleeve pipe 31 or hole.Hole body bottom waterproof layer 4 is laid to sleeve pipe 31 or hole
Hole periphery is closed up, and laying protective layer 5 makees insulation blocking to waterproof layer.Precipitation cheats 1 depth not less than suction pump height+100mm；Drop
Puddle build can be cuboid-type, or cylinder.Precipitation hole hole bottom 12 can use cement mortar bedding cushion, pea gravel concreten pad
Layer.When using cement mortar bedding cushion, thickness is not less than 20mm；When using pea gravel concreten bed course, thickness is not less than 40mm；
Precipitation hole crater wall 11 can use stretcher brick wall retaining wall wide, pea gravel concreten retaining wall, cement mortar retaining wall or not process
It is specific selected regarding soil property situation etc. mode.Periphery 50mm is pushed up beyond precipitation hole 1 in the periphery of cover plate 3；Cover plate material can use steel plate
(thickness is 3~8mm), precast concrete cover (thickness is 15~60mm) or template (including plank sheathing, glued board etc.)；Lid
Plate center sets sleeve pipe or hole, and sleeve pipe caliber or hole internal diameter are not less than 48mm；It is the gold of 10~100mm that sleeve pipe can use length
Category pipe (such as shelf pipe), pvc pipe or other materials pipeline；Sleeve pipe can not stretch out lid surface；When using steel deck-plate, by metal
Sleeve pipe is welded on steel plate center；When using precast concrete cover, by the sleeve pipe pre-embedding heart in a mold, form whole with cover plate
Body, or remove sleeve into hole；When using template, cut or cut template center and form hole.Cover plate upper surface preferably with
The basic unit of waterproof layer 4 (bed course or screed-coat) surface maintains an equal level, to ensure that waterproof layer 4 is smooth in hole body bottom base paving.Suction pump 2
Sewage pump, clarified water pump, immersible pump, booster pump etc. are can select, selects the suction pump of which kind of type, power to regard water, sediment charge
Depending on；Cable and drainpipe are passed from sleeve pipe.Protective layer 5 can use pea gravel concreten or cement mortar.Mixed when using microlith
During solidifying soil, its thickness is not less than 50mm；When using cement mortar, its thickness is not less than 20mm.
Before pouring hypogee hole body, draining pump cable and pipeline 21 are cut off, filled from sleeve pipe 31 or hole fill out level immediately
With sandstone 13, Reperfu- sion hole inner concrete 14, finally sealed sleeve pipe 31 or hole, as shown in Fig. 2 suction pump 2 is cut off draining
Discarded after pump cable and pipeline 21 in precipitation hole 1, fill out certain thickness graded sand and stone 13 to paving in precipitation hole 1 immediately, then pour
Concrete to precipitation hole hole top is built, and uses the sealing sleeve pipe 31 of accelerated cement 32 or hole, accelerated cement 32 preferably to use rapid hardening rapidly
Type or retardation setting type waterproofing and leakage-stopping are precious.May be not yet pre-hardening because cheating inner concrete in sealing sleeve pipe, therefore, it is close using accelerated cement
Feng Shi, its viscosity, group's size should determine according to field condition；Meanwhile, its upper surface should maintain an equal level with cover plate, be beneficial to waterproof layer
Lay and the covering precipitation of waterproof layer 6 hole at the top of one precipitation hole of precipitation hole hole top laying, taken with surrounding hole body bottom waterproof layer 4
Connect, constitute closure waterproof layer.Paving fills out graded sand and stone in precipitation hole, then pours hole inner concrete, graded sand and stone consumption totality
20% of product not less than precipitation hole total measurement (volume)；The meaning of graded sand and stone is：As a kind of retaining level, residual product in accumulation hole
Water leaking-in before water and concreting, to ensure that ponding and water leaking-in do not influence the pouring quality of concrete.In precipitation hole
Casting concrete is overlapped to hole body shaft bottom plane, laying precipitation hole top waterproof layer and with hole body bottom waterproof layer, pours hole body
Structural concrete 7.Hole body structural concrete 7 is identical with the concrete material poured in dewatering well.Such as waterproof layer overlap
It is contaminated, before precipitation hole hole top waterproof layer with hole bottom waterproof layer overlap joint, preferably hole body bottom waterproof layer overlap is carried out clearly
Reason and dried process, the method for dried process is including with sponge sucks in water, blowtorch or spray gun baking, heat gun heating and dehumidification etc. are arranged
Apply.Laying protective layer is supplemented after waterproof layer overlap joint, protective layer can use pea gravel concreten or cement mortar.When using microlith coagulation
When native, its thickness is not less than 50mm；When using cement mortar, its thickness is not less than 20mm.
Although above-mentioned be described to specific embodiment of the invention, not to the limit of the scope of the present invention
System, for some technology contents well known to those of ordinary skill in the art, here is omitted, and one of ordinary skill in the art should
This understands that on the basis of technical scheme, those skilled in the art make by need not paying creative work
Various modifications or deformation still within protection scope of the present invention.
Claims (8)
1. under a kind of water resource enriched environment hypogee hole body waterproof construction precipitation processing method, it is characterised in that including with
Lower step：
Step a. sets precipitation hole in hole body bottom, and precipitation sets suction pump in hole；
Step b. precipitation hole top sets cover plate, the prefabricated sleeve pipe of cover plate central or reserving hole, and suction pump cable and drainpipe are from set
Passed in pipe or hole；Hole body bottom waterproof layer is laid to sleeve pipe or hole periphery and is closed up；
Before step c. pours hypogee hole body, the drainpipe and cable of suction pump are cut off；
Step d. fills out graded sand and stone from cover plate central sleeve pipe or hole to filling in precipitation hole；
Then step e. uses rapid hardening water from cover plate central sleeve pipe or hole to casting concrete in precipitation hole to hole body base plane
Mud seal cover board center sleeve or hole, maintain an equal level with cover plate upper surface
Step f. lays the waterproof layer of cover plate central sleeve pipe or hole position and is overlapped with hole body bottom waterproof layer；
Step g. pours hole body structural concrete.
2. body waterproof construction precipitation processing method is cheated in hypogee under water resource enriched environment according to claim 1, its
It is characterised by, described protective layer uses pea gravel concreten or cement mortar.
3. body waterproof construction precipitation processing method is cheated in hypogee under water resource enriched environment according to claim 2, its
It is characterised by, when using pea gravel concreten, its thickness is not less than 50mm to described protective layer；When using cement mortar, its
Thickness is not less than 20mm.
4. body waterproof construction precipitation processing method is cheated in hypogee under water resource enriched environment according to claim 1, its
It is characterised by, in described step a after precipitation is cheated to be set, spreads hole foot mat in precipitation hole immediately and build retaining wall, and smear
Earth-retaining mortar or concrete.
5. body waterproof construction precipitation processing method is cheated in hypogee under water resource enriched environment according to claim 1, its
It is characterised by, described precipitation hole depth is not less than described suction pump height+100mm.
6. body waterproof construction precipitation processing method is cheated in hypogee under water resource enriched environment according to claim 1, its
It is characterised by, the cumulative volume of described graded sand and stone is not less than the 20% of the total measurement (volume) in described precipitation hole.
7. body waterproof construction precipitation processing method is cheated in hypogee under water resource enriched environment according to claim 1, its
Be characterised by, before described step f also includes overlap joint, hole body bottom waterproof layer overlap is cleared up and dried process step
Suddenly.
8. body waterproof construction precipitation processing method is cheated in hypogee under water resource enriched environment according to claim 1, its
It is characterised by, described hole body is a kind of in sump, elevator, cushion cap foundation well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710093450.3A CN106894431B (en) | 2017-02-21 | 2017-02-21 | Hypogee pit body waterproof construction precipitation processing method under a kind of water resource enriched environment |
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| CN201710093450.3A CN106894431B (en) | 2017-02-21 | 2017-02-21 | Hypogee pit body waterproof construction precipitation processing method under a kind of water resource enriched environment |
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| CN106894431B CN106894431B (en) | 2019-08-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288208A (en) * | 2017-08-09 | 2017-10-24 | 中国大唐集团科技工程有限公司 | A kind of efficient absorption tower drain pump erecting device and installation method |
| CN110670613A (en) * | 2019-08-22 | 2020-01-10 | 北京东地岩土工程有限公司 | Anti-seepage structure of foundation pit elevator shaft and construction method thereof |
| CN110925018A (en) * | 2019-12-02 | 2020-03-27 | 河南科技大学 | Pump room construction method and pump room construction dewatering system in tunnel connection channel |
| CN111764396A (en) * | 2020-07-07 | 2020-10-13 | 中建一局集团建设发展有限公司 | Construction method for water-rich stratum pit-in-pit |
| CN113832952A (en) * | 2021-09-25 | 2021-12-24 | 浙江省浙南综合工程勘察测绘院有限公司 | Soft soil foundation reinforcing method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110925018A (en) * | 2019-12-02 | 2020-03-27 | 河南科技大学 | Pump room construction method and pump room construction dewatering system in tunnel connection channel |
| CN111764396A (en) * | 2020-07-07 | 2020-10-13 | 中建一局集团建设发展有限公司 | Construction method for water-rich stratum pit-in-pit |
| CN113832952A (en) * | 2021-09-25 | 2021-12-24 | 浙江省浙南综合工程勘察测绘院有限公司 | Soft soil foundation reinforcing method |
| CN113832952B (en) * | 2021-09-25 | 2022-09-30 | 浙江省浙南综合工程勘察测绘院有限公司 | Soft soil foundation reinforcing method |
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Address after: 262700 Shandong city in Weifang Province, Shouguang City, Taiwan town government West 2000 meters Applicant after: Hongyuan Waterproof Technology Group Co., Ltd. Applicant after: Weifang Hongyuan Waterproof Engineering Co., Ltd. Address before: 262700 Shandong city in Weifang Province, Shouguang City, Taiwan town government West 2000 meters Applicant before: Weifang Hongyuan Waterproof Material Co., Ltd. Applicant before: Weifang Hongyuan Waterproof Engineering Co., Ltd. |
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