CN104060620A - Karst fissure water control method for deep foundation pit - Google Patents
Karst fissure water control method for deep foundation pit Download PDFInfo
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- CN104060620A CN104060620A CN201310089926.8A CN201310089926A CN104060620A CN 104060620 A CN104060620 A CN 104060620A CN 201310089926 A CN201310089926 A CN 201310089926A CN 104060620 A CN104060620 A CN 104060620A
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- collecting well
- foundation ditch
- foundation pit
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Abstract
The invention relates to a drainage method for a deep foundation pit, particularly to a karst fissure water control method for the deep foundation pit. The control method comprises the steps as follows: the foundation pit is excavated, and meanwhile, a water-collecting well is arranged at the bottom of the foundation pit; water guide grooves communicated transversely and longitudinally are formed in rock stratum slopes of the foundation pit; reinforcing steel bars are bound, concrete pouring is performed, and meanwhile, grouting pipes are arranged at the bottom of the foundation pit; water is drained by a water pump, the well is sealed, after a concrete structure is sealed, the water pump in the water-collecting well is taken out, and underwater concrete is poured after the underground water level in the water-collecting well rises to the balance height; grouting is performed at the bottom of the foundation pit, cement slurry is injected from the grouting pipes arranged at the bottom of the foundation pit, valves of grouting drain pipes located at top ends of waterproof-membrane-covered positions are open to drain accumulated water during grouting, and the grouting pipes and the valves of the drain pipes are closed after the foundation pit is full of the cement slurry; cleaning is performed, after the cement slurry is solidified and reaches the strength, the water-collecting well, the grouting pipes and the grouting drain pipes are cut and leveled along the concrete structure. According to the control method, the control effect on underground water is good, and the normal proceeding of the foundation pit structure construction can be guaranteed.
Description
Technical field
The present invention designs deep foundation ditch, relates in particular to the water discharge method that falls of deep foundation ditch.
Background technology
There are many ground alternating layers and full lithostratigraphy in south China area, that under this geological conditions, carries out that first underground deep foundation pit construction consider is excavation of foundation pit, goes along with sb. to guard him and groundwater control problem, and often there is a large amount of Karst Fissures water because of the crack in rock stratum or karst hole in this geological conditions, crevice water is because of the perforation of Karst Fissures transverse and longitudinal, most supply sources abundant with water resource communicate, during excavation of foundation pit, can pour in a large amount of Karst Fissures water, bring very big difficulty to excavation of foundation pit and structure construction.
Summary of the invention
The present invention is intended to overcome the defect of prior art, and a kind of deep foundation ditch Karst Fissures water controling method is provided.Groundwater control of the present invention is effective, can ensure normally carrying out of foundation pit structure construction.
In order to solve the problems of the technologies described above, a kind of deep foundation ditch Karst Fissures of the present invention water controling method, it comprises:
Excavation of foundation pit step, arranges collecting well at foundation ditch lower curtate simultaneously,
The guiding gutter step that transverse and longitudinal connects is set in the side slope of foundation ditch rock stratum, and guiding gutter is semicircle shape and is buckled in the side slope of foundation ditch rock stratum, is drilled with water guide filter opening on guiding gutter, and plane and collecting well that guiding gutter and guiding gutter cover connect, and guiding gutter top covers waterproof film;
Assembling reinforcement is also carried out concrete and is built step, in foundation ditch bottom, Grouting Pipe is set simultaneously;
Water pump draining with take out the step of shunting in a well after collecting well, the Karst Fissures water of waterproof film bottom is flowed in collecting well and is discharged by guiding gutter, after the sealing of concrete structure by collecting well in water pump take out, the interior groundwater table of collecting well rises to balance height after-pouring Underwater Concrete;
Foundation ditch bottom slip casting step, Underwater Concrete reaches after intensity, from being arranged on the Grouting Pipe injected water mud of foundation ditch bottom, opens and be positioned at waterproof film covering place top slip casting gutter valve and drain the water away when slip casting, after filling, cement paste closes the valve of Grouting Pipe, gutter, Grouting Pipe;
Cleanup step, cement paste solidifies and intensity reach after by collecting well, Grouting Pipe, slip casting gutter along the levelling of concrete structure cuts.
Described deep foundation ditch Karst Fissures water controling method, the inside and outside seal ring that is all welded with of described collecting well.
Described deep foundation ditch Karst Fissures water controling method, described collecting well height is higher than foundation ditch bottom level.
Described deep foundation ditch Karst Fissures water controling method, described collecting well height and foundation ditch bottom level maintain an equal level, shut-in well is to be positioned at collecting well bottom fillter section position welding steel and flange, itself and permeable place, shaft bottom are separated, after structure sealing, take out water pump, mounting flange blind plate, then directly builds concrete.。
Described deep foundation ditch Karst Fissures water controling method, described Grouting Pipe, slip casting gutter are welded with seal ring.
Groundwater control of the present invention is effective, can ensure normally carrying out of foundation pit structure construction.Can be used for the similar base pit engineering that underground water is larger.Principle is simple, easy operating.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is first embodiment schematic diagram of the present invention;
Fig. 2 is second embodiment schematic diagram of the present invention;
Fig. 3 is A portion enlarged drawing in the middle of Fig. 1 or Fig. 2.。
Detailed description of the invention
The first embodiment:
Refer to Fig. 1 and in conjunction with Fig. 3, in digging process, in foundation ditch 6 bottoms, a collecting well 1 is set, in the foundation ditch rock stratum side slope of infiltrating at a large amount of Karst Fissures water, the guiding gutter 2 that transverse and longitudinal connects is set, guiding gutter is semicircle shape and is buckled in the side slope of rock stratum, on guiding gutter, be drilled with water guide filter opening, plane and collecting well that guiding gutter and guiding gutter cover connect, guiding gutter top covers waterproof film 3, carrying out like this reinforcing bar binding and concrete builds overall process and can carry out on the waterproof film top through water proof processing, construction period, concrete structure normally carried out, the Karst Fissures water of waterproof film bottom is flowed in collecting well and is discharged by guiding gutter, after concrete structure sealing by collecting well in water pump take out, in collecting well, groundwater table rises to balance height after-pouring Underwater Concrete, inside and outside collecting well, be welded with seal ring and can play waterproof action, Underwater Concrete reaches after intensity, from being arranged on the Grouting Pipe 4 injected water mud of foundation ditch bottom, when slip casting, open and be positioned at waterproof film covering place top slip casting gutter 5 valves and drain the water away, after filling, cement paste closes the valve of Grouting Pipe, gutter, Grouting Pipe, gutter are welded with seal ring 7 also can play waterproof action, and cement paste solidifies and intensity is prolonged the levelling of concrete structure cuts by collecting well, Grouting Pipe, slip casting gutter after reaching.
The second embodiment
Referring to Fig. 2, the present embodiment is the situation general or less for Karst Fissures water, be to catchment highly identical with well concrete structural base with the first embodiment difference, shut-in well is to be positioned at collecting well bottom fillter section position welding steel and blank flange 8, itself and permeable place, shaft bottom are separated, after structure sealing, take out water pump, mounting flange blind plate 8, then directly builds concrete.
Claims (5)
1. a deep foundation ditch Karst Fissures water controling method, is characterized in that, it comprises:
Excavation of foundation pit step, arranges collecting well at foundation ditch lower curtate simultaneously,
The guiding gutter step that transverse and longitudinal connects is set in the side slope of foundation ditch rock stratum, and guiding gutter is semicircle shape and is buckled in the side slope of foundation ditch rock stratum, is drilled with water guide filter opening on guiding gutter, and plane and collecting well that guiding gutter and guiding gutter cover connect, and guiding gutter top covers waterproof film;
Assembling reinforcement is also carried out concrete and is built step, in foundation ditch bottom, Grouting Pipe is set simultaneously;
Pump drainage with take out the step of shunting in a well after collecting well, the Karst Fissures water of waterproof film bottom is flowed in collecting well and is discharged by guiding gutter, after the sealing of concrete structure by collecting well in water pump take out, the interior groundwater table of collecting well rises to balance height after-pouring Underwater Concrete;
Foundation ditch bottom slip casting step, Underwater Concrete reaches after intensity, from being arranged on the Grouting Pipe injected water mud of foundation ditch bottom, when slip casting, open and be positioned at waterproof film covering place top slip casting gutter valve and drain the water away, after filling, cement paste closes the valve of Grouting Pipe, gutter;
Cleanup step, cement paste solidifies and intensity reach after by collecting well, Grouting Pipe, slip casting gutter along the levelling of concrete structure cuts.
2. deep foundation ditch Karst Fissures water controling method according to claim 1, is characterized in that the inside and outside seal ring that is all welded with of described collecting well.
3. deep foundation ditch Karst Fissures water controling method according to claim 1 and 2, is characterized in that, described collecting well height is higher than foundation ditch bottom level.
4. deep foundation ditch Karst Fissures water controling method according to claim 1 and 2, it is characterized in that, described collecting well height and foundation ditch bottom level maintain an equal level, shut-in well is to be positioned at collecting well bottom fillter section position welding steel and flange, itself and permeable place, shaft bottom are separated, after structure sealing, take out water pump, mounting flange blind plate, then directly builds concrete.
5. deep foundation ditch Karst Fissures water controling method according to claim 1, is characterized in that, described Grouting Pipe, slip casting gutter are welded with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310089926.8A CN104060620B (en) | 2013-03-20 | 2013-03-20 | Deep basal pit Karst Fissures water controling method |
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| CN201310089926.8A CN104060620B (en) | 2013-03-20 | 2013-03-20 | Deep basal pit Karst Fissures water controling method |
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| CN104060620A true CN104060620A (en) | 2014-09-24 |
| CN104060620B CN104060620B (en) | 2016-08-10 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294836A (en) * | 2014-10-30 | 2015-01-21 | 中冶建工集团有限公司 | Water table lowering method applied to situation that aquiclude of foundation pit is cracked |
| CN104846836A (en) * | 2015-05-21 | 2015-08-19 | 中铁四局集团有限公司 | Water supply and drainage device for deep foundation pit and construction method based on water supply and drainage device |
| CN105201002A (en) * | 2015-10-23 | 2015-12-30 | 金磐集团有限公司 | Underground structure seepage drainage system and construction method thereof |
| CN105625448A (en) * | 2014-10-31 | 2016-06-01 | 龚展宇 | Underground water drainage method and device for underground building |
| CN106012951A (en) * | 2016-06-27 | 2016-10-12 | 李德群 | Method for constructing reservoir away from karst caves in limestone areas and constructed reservoir structure |
| CN107217674A (en) * | 2017-05-10 | 2017-09-29 | 山西四建集团有限公司 | Cubic meter of stone foundation ditch enters rock non-explosive excavation construction method |
| CN111472347A (en) * | 2020-04-17 | 2020-07-31 | 中铁六局集团有限公司 | Leaking stoppage device for underground continuous wall water leakage position |
| CN111501767A (en) * | 2020-03-24 | 2020-08-07 | 中铁隧道局集团建设有限公司 | Foundation pit base surface hydration-free construction structure under sandy cobble and mudstone geological conditions |
| CN112281858A (en) * | 2020-10-20 | 2021-01-29 | 中建八局发展建设有限公司 | Mud rock natural foundation fissure water drainage construction method |
| CN113250219A (en) * | 2021-05-18 | 2021-08-13 | 深圳市大升高科技工程有限公司 | Foundation pit karst effluent treatment plant |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836232B (en) * | 2017-03-30 | 2019-01-29 | 中国华西企业股份有限公司 | Deep basal pit pressure-bearing water seal drainage construction technique |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294836A (en) * | 2014-10-30 | 2015-01-21 | 中冶建工集团有限公司 | Water table lowering method applied to situation that aquiclude of foundation pit is cracked |
| CN104294836B (en) * | 2014-10-30 | 2016-06-22 | 中冶建工集团有限公司 | There is the precipitation processing method in crack in foundation ditch water barrier |
| CN105625448A (en) * | 2014-10-31 | 2016-06-01 | 龚展宇 | Underground water drainage method and device for underground building |
| CN104846836A (en) * | 2015-05-21 | 2015-08-19 | 中铁四局集团有限公司 | Water supply and drainage device for deep foundation pit and construction method based on water supply and drainage device |
| CN105201002A (en) * | 2015-10-23 | 2015-12-30 | 金磐集团有限公司 | Underground structure seepage drainage system and construction method thereof |
| CN106012951A (en) * | 2016-06-27 | 2016-10-12 | 李德群 | Method for constructing reservoir away from karst caves in limestone areas and constructed reservoir structure |
| CN107217674A (en) * | 2017-05-10 | 2017-09-29 | 山西四建集团有限公司 | Cubic meter of stone foundation ditch enters rock non-explosive excavation construction method |
| CN111501767A (en) * | 2020-03-24 | 2020-08-07 | 中铁隧道局集团建设有限公司 | Foundation pit base surface hydration-free construction structure under sandy cobble and mudstone geological conditions |
| CN111501767B (en) * | 2020-03-24 | 2021-10-26 | 中铁隧道局集团建设有限公司 | Foundation pit base surface hydration-free construction structure under sandy cobble and mudstone geological conditions |
| CN111472347A (en) * | 2020-04-17 | 2020-07-31 | 中铁六局集团有限公司 | Leaking stoppage device for underground continuous wall water leakage position |
| CN112281858A (en) * | 2020-10-20 | 2021-01-29 | 中建八局发展建设有限公司 | Mud rock natural foundation fissure water drainage construction method |
| CN113250219A (en) * | 2021-05-18 | 2021-08-13 | 深圳市大升高科技工程有限公司 | Foundation pit karst effluent treatment plant |
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| CN104060620B (en) | 2016-08-10 |
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