CN105155562A - Construction method for bottom sealing treatment of spring openings of deep foundation pit - Google Patents
Construction method for bottom sealing treatment of spring openings of deep foundation pit Download PDFInfo
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- CN105155562A CN105155562A CN201510476177.3A CN201510476177A CN105155562A CN 105155562 A CN105155562 A CN 105155562A CN 201510476177 A CN201510476177 A CN 201510476177A CN 105155562 A CN105155562 A CN 105155562A
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- spring
- deep foundation
- catchment covers
- foundation ditch
- sump
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Abstract
The invention provides a construction method for bottom sealing treatment of spring openings of a deep foundation pit. The construction method comprises the specific steps that a, the spring openings, needing to be blocked, in the deep foundation pit are located, and a diversion ditch is arranged between every peripheral spring opening and the center spring opening; b, a water collection pit is dug in the center spring opening; c, a water collection cover is manufactured, a flange is arranged at an opening of the water collection cover, the center spring opening is covered with the water collection cover, and a water pump is placed in the water collection cover; d, after the water collection cover is mounted, the water pump is started, and gushing water collected in the water collection cover is continuously drawn out of the water collection cover; and e, concrete pouring of the deep foundation pit and the water collection pit is finished in three steps, and the open end of the water collection cover is blocked before the third step of concrete pouring. The problem of gushing happening to the bottom of the deep foundation pit after the deep foundation pit of a coastal area or lake area is dug is solved well through collection, convergence, water drawing, blocking and the like. The construction method is easy to operate and high in construction efficiency, and can also be used for treatment of gushing problems of other areas.
Description
Technical field
The present invention relates to the method for a kind of foundation ditch partial water burst process, specifically a kind of construction method for deep foundation ditch spring sealing.
Background technology
Along with the development of urban underground space, the deep foundation facilities such as the pump house in the industrial infrastructure such as metallurgy, the electric power process of construction in area coastal and along the lake, pond and open caisson are more and more, and the degree of depth of China's deep foundation ditch is also deepened thereupon.When substrate is excessively dark below horizontal plane, when area of base is larger, precipitation facility then can be subject to certain restrictions, affecting dewatering effect, may there is multiple springs water burst in now substrate, affects the basic back cover construction of deep foundation ditch, not only schedule delays, also can cause great economic loss.
The patent No. is that the patent of 200920080532.5 is for this situation, provide a kind of polywater cover that can work the effect of damming to the partial water burst of foundation ditch, limit the flow direction that intercepts water, facilitate follow-up diversion and drainage works, this polywater cover comprises that the whole body is closed, the cover body of bottom opening, cover body is provided with outlet pipe, during use, cover body is fastened the water burst position on foundation ditch, and base soil certain depth will be inserted bottom cover body, now water burst is assembled at mask body intracavity gradually, the air in cover body and be gathered in intercepting water in cover body and enter diversion and dewatering installation by outlet pipe.This method structure is simple, can well solve the partial water burst problem of foundation ditch, but the air in cover body and intercept water and can not discharge outside cover body completely, and can not shutoff thoroughly be carried out to water burst place.
Summary of the invention
Object of the present invention is just to provide a kind of construction method for deep foundation ditch spring sealing, to solve the not obvious and halfway problem of back cover of construction effect that prior art exists in the process at deep foundation ditch spring place.
The present invention is achieved in that
For a construction method for deep foundation ditch spring sealing, comprise the following steps:
A, at the bottom of deep foundation ditch, need the spring of carrying out shutoff to position according to site operation situation, mark the position at spring, center and surrounding spring, around each, between spring and spring, center, all lead is set, lead rubble is filled into french drain;
B, spring, center place at the bottom of deep foundation ditch dig sump, and the size of sump determines according to the distribution at spring at the bottom of deep foundation ditch;
C, make catchment covers with steel plate, the opening part on catchment covers top is provided with flange, is fastened at the spring, center in sump with catchment covers, water pump is put into catchment covers inner and install from the opening part on catchment covers top;
After d, catchment covers install, open water pump, continue to be extracted into outside catchment covers from the water burst that around spring and spring, center are collected by catchment covers;
E, concreting is carried out and shutoff spring to deep foundation ditch and sump: the concrete first step is carried out to other spaces in the deep foundation ditch beyond sump in deep foundation ditch and sump superjacent air space and builds; Build by carrying out concrete second step to the medium position of catchment covers at the bottom of the hole of sump, anti-sealing is gushed out outside catchment covers; After pumping for water pump in catchment covers completes, water pump is taken out, under the cooperation of the flange at catchment covers top end opening place, shutoff is carried out to the top end opening of catchment covers with blank flange, build more than the middle part of catchment covers in sump carrying out concrete 3rd step to the space of the basic upper surface of deep foundation ditch after shutoff completes.
Be 6cm ~ 10cm for making the thickness range of the steel plate of described catchment covers.
Submersible pump elected as by the described water pump be arranged in described catchment covers.
Be 20mm ~ 40mm for lead being filled into the particle size range of the rubble of french drain.
The present invention by arranging lead between spring and spring, center around each, spring, center place at the bottom of deep foundation ditch digs sump, the water burst at spring, center and surrounding spring is pooled in the catchment covers of special facture, the water burst at spring can be carried out centralized Control thus, the concreting of large area sole plate can be carried out in central drainage process.After pumping for water pump in catchment covers completes, closed by blank flange, can carry out the construction of final stage concrete floor, and need not strengthen the expense of well-points dewatering again, operation is simple, effective.Lead rubble is filled into french drain, and the water around in spring is flowed into by gutter in the process of sump can not affect concrete above it building, and the concreting of deep foundation ditch and the draining at spring is carried out simultaneously, shortens the construction period.
The present invention by afflux, conflux, draw water, the process such as shutoff preferably resolves the gush problem occurred at the bottom of the deep foundation ditch faced after the deep pit digging in area coastal or along the lake completes.This construction method is easy to operation, efficiency of construction is higher, and its used tool makes to get up comparatively simply, also can be used for the process of the spring problem of other regional soil layer.
Accompanying drawing explanation
Fig. 1 be deep foundation ditch spring of the present invention sealing structural representation.
Fig. 2 be deep foundation ditch spring back cover A-A to sectional drawing.
In figure: 1, deep foundation ditch, 2, at the bottom of deep foundation ditch, 3, lead, 4, sump, 5, catchment covers, 6, flange, 7, water pump, 8, blank flange, 9-1, the first concreting, 9-2, the second concreting, 9-3, the 3rd concreting, 10, basic upper surface.
Detailed description of the invention
As depicted in figs. 1 and 2, the present invention for the concrete steps of the construction method of deep foundation ditch spring sealing is:
(1) spring of carrying out shutoff is needed to position at the bottom of deep foundation ditch in 2 according to site operation situation, mark the position at spring, center and surrounding spring, spring, center is all springs needing to be in shutoff spring center, and around spring is the spring needing shutoff except spring, center.Around each, between spring and spring, center, lead 3 is all set, the distribution of whole lead 3 is center radiation shape, lead 3 is filled into french drain with rubble, french drain can make the water in around spring be flowed in the process of sump 4 by gutter can not affect concrete above it building, the concreting of deep foundation ditch and the draining at spring are carried out simultaneously, improve efficiency of construction, shorten the construction period simultaneously.The cross section of the lead 3 in the present embodiment is square-section, and its width is 500 millimeters, and the degree of depth is 500 millimeters; It is 20 millimeters ~ 40 millimeters for lead 3 being filled into the particle size range of the rubble of french drain.
(2) at the bottom of deep foundation ditch, spring, the center place of 2 digs sump 4, the size of sump 4 according at the bottom of deep foundation ditch in 2 spring distribution and determine.In the present embodiment, the length of sump 4 is 2 meters, and width is 2 meters, is highly 2 meters.
(3) make catchment covers 5 with steel plate, the opening part on catchment covers 5 top is provided with flange 6, is fastened at the spring, center in sump 4 with catchment covers 5, water pump 7 is put into catchment covers 5 inner and install from the opening part on catchment covers 5 top.It is 6 centimetres ~ 10 centimetres for making the thickness range of the steel plate of described catchment covers 5.In the present embodiment, the lower shape of catchment covers 5 is cube, and its shaped upper part is tetrapyamid shape, and the diameter of catchment covers 5 top end opening place flange 6 is 300 millimeters, and what the steel plate thickness making catchment covers 5 was adopted is 8 centimetres.
(4) after catchment covers 5 installs, open water pump 7, continue to be extracted into outside catchment covers 5 from the water burst that around spring and spring, center are collected by catchment covers 5.The submersible pump 7 suitable for lift that water pump 7 in the present embodiment adopts.The water burst at spring, center and surrounding spring is pooled in catchment covers 5 by catchment covers 5, the water burst at spring, center and surrounding spring can be carried out centralized Control, can carry out the concreting of large area sole plate in central drainage process.
(5) concreting is carried out and shutoff spring to deep foundation ditch 1 and sump 4, its process point position three step: carry out the concrete first step to other spaces in the deep foundation ditch 1 beyond sump 4 in deep foundation ditch 1 and sump 4 superjacent air space and build, its concrete is called the first concreting 9-1; Carry out concrete second step by the medium position to catchment covers 5 at the bottom of the hole of sump 4 to build, anti-sealing is gushed out outside catchment covers 5, and its concreting becomes the second concreting 9-2; After water pump 7 in catchment covers 5 has drawn water, water pump 7 is taken out, under the cooperation of the flange 6 at catchment covers 5 top end opening place, shutoff is carried out to the top end opening of catchment covers 5 with blank flange 8, build more than the middle part of catchment covers 5 in sump 4 carrying out concrete 3rd step to the space of the basic upper surface 10 of deep foundation ditch 1 after shutoff completes, its concrete of building is called the 3rd concreting 9-3.3rd step concrete is built and is middlely first carried out the airtight measure of shutoff with blank flange 8 pairs of catchment covers 5, then builds, and need not increase the precipitation well point of other form in its casting process again, decrease the input cost for well-points dewatering, operation is simple, effective.
The present invention solves gush problem well after the deep pit digging in area coastal or along the lake completes, and this construction method is easy to operation, also can be used for the process of spring problem in other regional soil layer.
Claims (4)
1. for a construction method for deep foundation ditch spring sealing, it is characterized in that, comprise the following steps:
A, at the bottom of deep foundation ditch, need the spring of carrying out shutoff to position according to site operation situation, mark the position at spring, center and surrounding spring, around each, between spring and spring, center, all lead is set, lead rubble is filled into french drain;
B, spring, center place at the bottom of deep foundation ditch dig sump, and the size of sump determines according to the distribution at spring at the bottom of deep foundation ditch;
C, make catchment covers with steel plate, the opening part on catchment covers top is provided with flange, is fastened at the spring, center in sump with catchment covers, water pump is put into catchment covers inner and install from the opening part on catchment covers top;
After d, catchment covers install, open water pump, continue to be extracted into outside catchment covers from the water burst that around spring and spring, center are collected by catchment covers;
E, concreting is carried out and shutoff spring to deep foundation ditch and sump: the concrete first step is carried out to other spaces in the deep foundation ditch beyond sump in deep foundation ditch and sump superjacent air space and builds; Build by carrying out concrete second step to the medium position of catchment covers at the bottom of the hole of sump, anti-sealing is gushed out outside catchment covers; After pumping for water pump in catchment covers completes, water pump is taken out, under the cooperation of the flange at catchment covers top end opening place, shutoff is carried out to the top end opening of catchment covers with blank flange, build more than the middle part of catchment covers in sump carrying out concrete 3rd step to the space of the basic upper surface of deep foundation ditch after shutoff completes.
2. the construction method for deep foundation ditch spring sealing according to claim 1, is characterized in that, is 6cm ~ 10cm for making the thickness range of the steel plate of described catchment covers.
3. the construction method for deep foundation ditch spring sealing according to claim 1, is characterized in that, submersible pump elected as by the described water pump be arranged in described catchment covers.
4. the construction method for deep foundation ditch spring sealing according to claim 1, is characterized in that, is 20mm ~ 40mm for lead being filled into the particle size range of the rubble of french drain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510476177.3A CN105155562B (en) | 2015-08-06 | 2015-08-06 | For the construction method of deep basal pit spring sealing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510476177.3A CN105155562B (en) | 2015-08-06 | 2015-08-06 | For the construction method of deep basal pit spring sealing |
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| CN105155562A true CN105155562A (en) | 2015-12-16 |
| CN105155562B CN105155562B (en) | 2017-05-31 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604954A (en) * | 2017-09-29 | 2018-01-19 | 上海宝冶集团有限公司 | Ttom of pipe plugging construction method after deep basal pit push pipe |
| CN108677982A (en) * | 2018-05-24 | 2018-10-19 | 中铁隧道局集团有限公司 | Complex geological condition foundation pit substrate excavates Tunnel gushing treatment method |
| CN108824464A (en) * | 2018-07-24 | 2018-11-16 | 北京首钢建设集团有限公司 | A kind of whirling well deep building pit piping bottom sealing method |
| CN110847199A (en) * | 2019-11-12 | 2020-02-28 | 中国二十冶集团有限公司 | Construction method for drainage of underground water of deep foundation pit |
| CN114045848A (en) * | 2021-11-17 | 2022-02-15 | 中建八局第四建设有限公司 | Construction method for pit foundation in water inrush pit |
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| RU2147645C1 (en) * | 1998-05-15 | 2000-04-20 | Закрытое акционерное общество Промышленно-строительная фирма "Содружество" | Method and device for lowering of ground water level in construction and operation of underground structures |
| 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 |
| CN202610819U (en) * | 2012-05-11 | 2012-12-19 | 天津二十冶建设有限公司 | Foundation pit drainage system |
| CN203475467U (en) * | 2013-08-28 | 2014-03-12 | 中建七局第二建筑有限公司 | Base plate concrete bottom sealing structure |
| CN104060622A (en) * | 2014-07-14 | 2014-09-24 | 云南建工第四建设有限公司 | Method for discharging water in pint through steel bucket in pit |
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2015
- 2015-08-06 CN CN201510476177.3A patent/CN105155562B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2147645C1 (en) * | 1998-05-15 | 2000-04-20 | Закрытое акционерное общество Промышленно-строительная фирма "Содружество" | Method and device for lowering of ground water level in construction and operation of underground structures |
| 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 |
| CN202610819U (en) * | 2012-05-11 | 2012-12-19 | 天津二十冶建设有限公司 | Foundation pit drainage system |
| CN203475467U (en) * | 2013-08-28 | 2014-03-12 | 中建七局第二建筑有限公司 | Base plate concrete bottom sealing structure |
| CN104060622A (en) * | 2014-07-14 | 2014-09-24 | 云南建工第四建设有限公司 | Method for discharging water in pint through steel bucket in pit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604954A (en) * | 2017-09-29 | 2018-01-19 | 上海宝冶集团有限公司 | Ttom of pipe plugging construction method after deep basal pit push pipe |
| CN108677982A (en) * | 2018-05-24 | 2018-10-19 | 中铁隧道局集团有限公司 | Complex geological condition foundation pit substrate excavates Tunnel gushing treatment method |
| CN108824464A (en) * | 2018-07-24 | 2018-11-16 | 北京首钢建设集团有限公司 | A kind of whirling well deep building pit piping bottom sealing method |
| CN110847199A (en) * | 2019-11-12 | 2020-02-28 | 中国二十冶集团有限公司 | Construction method for drainage of underground water of deep foundation pit |
| CN114045848A (en) * | 2021-11-17 | 2022-02-15 | 中建八局第四建设有限公司 | Construction method for pit foundation in water inrush pit |
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| CN105155562B (en) | 2017-05-31 |
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