CN104452786A - Deep foundation pit elevator shaft sump dewatering construction method - Google Patents
Deep foundation pit elevator shaft sump dewatering construction method Download PDFInfo
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- CN104452786A CN104452786A CN201410646655.6A CN201410646655A CN104452786A CN 104452786 A CN104452786 A CN 104452786A CN 201410646655 A CN201410646655 A CN 201410646655A CN 104452786 A CN104452786 A CN 104452786A
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- sump
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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
- E02D19/10—Restraining of underground water by lowering level of ground water
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention relates to the field of deep foundation pit dewatering, in particular to a deep foundation pit elevator shaft sump dewatering construction method. The deep foundation pit elevator shaft sump dewatering construction method is characterized by comprising the following steps that S1, a pre-buried pipe is manufactured; S2, a round hole is dug in base course earthwork at the center position of a sump, the lower end of the pre-buried pipe is inserted into the round hole, and cobbles are stuffed in the whole space, on the periphery of the pre-buried pipe, of the round hole and tightly buried; S3, a submersible pump is placed in the pre-buried pipe; S4, before a cushion course is cast, a layer of plastic film is laid on the surface of the base course earthwork of the sump, and then casting of the cushion course, laying of a waterproof layer and a waterproof protection layer, binding of steel bars and formwork installation construction are conducted; S5, raft foundation concrete pouring is conducted. According to the deep foundation pit elevator shaft sump dewatering construction method, dewatering can be independently and effectively conducted on the sump when accumulated water in the sump cannot be treated because the height of the bottom of a dewatering well is larger than the depth of the sump of an elevator shaft.
Description
Technical field
The present invention relates to deep foundation pit precipitation field, be specifically related to a kind of deep foundation ditch elevator shaft sump dewatering construction method.
Background technology
Adopt during deep foundation pit precipitation and bore the construction method of dewatering well in foundation ditch surrounding, but trepan after dark 8 meters of brill, bottom dewatering well, enter rugged lithosphere cannot down deep drilling, now bottom depth is higher than the degree of depth of elevator shaft sump in deep foundation ditch.After the water in dewatering well is drained, underground water is not being had to gush out in dewatering well, now in foundation ditch, the water of the elevator shaft sump of minimum point is still poured in sump from sandy gravel stratum and lithosphere layered position, if extract the water of sump not in time, gush on the completely rear underground water of water starts, the mat surface of whole basement has open fire to occur.Even if waterproof roll adopts conversion materials adopt the way of wet trade to construct, but there is hydraulic pressure that whole coiled material layer will be made to float due to underground water, cannot ensure the quality of products.If directly put submersible pump at sump to draw water, affect waterproof construction and the construction of the mat foundation in later stage of sump.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of deep foundation ditch elevator shaft sump dewatering construction method, when the method can cannot process sump internal water accumulation in dewatering well shaft bottom higher than the elevator shaft sump degree of depth, independence is effective carries out precipitation to sump.
For achieving the above object, the technical solution used in the present invention is:
A kind of deep foundation ditch elevator shaft sump dewatering construction method, is characterized in that it comprises the following steps:
S1, make built-in pipe: get a length and the certain steel pipe of diameter, in the certain limit of steel pipe bottom, offer some inlet openings, and be wound around two-layer screen pack around inlet opening; Again and inside outside at steel pipe weld respectively twice outside seal ring with together with inner seal ring, and to be all positioned at above inlet opening;
S2, in basic unit's earthwork of sump center position, excavate a round hole, injected the lower end of built-in pipe in circle hole, all inlet openings of built-in pipe lower end are all positioned at round hole, then built-in pipe surrounding adopts cobble to fill up to bury reality in circle hole;
S3, in built-in pipe, put into submersible pump, submersible pump continuous firing;
S4, before bed course is built, first on sump basic unit earthwork face, lay layer of plastic film, wrap the built-in pipe of part at built-in pipe place plastic sheeting; Carry out that bed course is built again, the laying of waterproofing course and fish tail and waterproof layer, reinforcing bar binding, model sheetinstallat construction;
S5, raft foundation concreting: when raft foundation concreting is to sump position, the ponding in built-in pipe is drained, extracts submersible pump, and in built-in pipe fill concrete dead for built-in pipe shutoff; Finally complete that raft foundation is concrete builds, whole built-in pipe is all wrapped up and covers.
In described step S6, the concrete of filling in built-in pipe is the water-tight concrete of intensity higher than a raft foundation concrete grade.
In described step S3, in built-in pipe, put into two submersible pumps, a job, an emergency use.
The invention has the beneficial effects as follows: will to bury under built-in pipe and at surrounding guanovulite, can ensure underground water very unimpeded enter in built-in pipe through the gap between stone, the cobble simultaneously inserted can be filled into row to the seam of built-in pipe and fill.Bed course spreads layer of plastic film before building, and serve impermeable role, guarantee the drying property of bed course, underground water flows in built-in pipe under plastic sheeting, can ensure that SBS waterproof coiled material can smooth construction.Adopt built-in pipe can put into two submersible pumps, a job, an emergency use simultaneously, when avoiding operation submersible pump bad after can not change in time to cause on underground water and gush, cause bed course to float destruction waterproofing course.At the interior welds seal ring of built-in pipe, can ensure that the underground water in sleeve pipe can be good at sealing when adopting Concrete Filled to built-in pipe; The inside and outside welding seal ring of built-in pipe, all can prevent underground water from upwards permeating along built-in pipe.In sum, when the method can cannot process sump internal water accumulation in dewatering well shaft bottom higher than the elevator shaft sump degree of depth, independence is effective carries out precipitation to sump.
Accompanying drawing explanation
Fig. 1 is the construction schematic diagram of the inventive method.
Fig. 2 is built-in pipe schematic diagram in the present invention.
In figure: 1-built-in pipe, 2-inlet opening, 3-screen pack, the outside seal ring of 4-, the inner seal ring of 5-.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated (as shown in Figure 1, 2).
A kind of deep foundation ditch elevator shaft sump dewatering construction method, is characterized in that it comprises the following steps:
S1, make built-in pipe 1: get a length and the certain steel pipe of diameter (adopting DN50 wall thickness to be the steel pipe of the long 3000mm of 3mm), offer in the certain limit of steel pipe bottom some inlet opening 2(be about in the high scope of 600mm in steel pipe bottom offer the inlet opening that diameter is 10mm spacing 50mm), and be wound around two-layer screen pack 3 around inlet opening 2; Again and inside outside at steel pipe weld respectively twice outside seal ring 4 with together with inside and outside seal ring thickness described in inner seal ring 5(be 3mm, width is 50mm, and with steel pipe full weld), and be all positioned at (the outside seal ring 4 of twice lays respectively at middle and lower part and the top of steel pipe, and inner seal ring 5 is positioned at the middle part of steel pipe together) above inlet opening 2;
S2, excavate in basic unit's earthwork of sump center position a round hole (circle hole dia be about 800mm, dark in 600mm), the lower end of built-in pipe 1 is injected in circle hole, all inlet openings 2 of built-in pipe 1 lower end are all positioned at round hole, then built-in pipe 1 surrounding adopts cobble to fill up and bury reality in circle hole;
S3, in built-in pipe 1, put into submersible pump, submersible pump continuous firing;
S4, before bed course is built, on sump basic unit earthwork face, first lay layer of plastic film (end, hole and hole wall all lay plastic sheeting), wrap the built-in pipe 1 of part at built-in pipe 1 place plastic sheeting; Carry out that bed course is built again, the laying of waterproofing course and fish tail and waterproof layer, reinforcing bar binding, model sheetinstallat construction;
S5, raft foundation concrete (C30, P6) are built: when raft foundation concreting is to sump position, is drained by the ponding in built-in pipe 1, extract submersible pump, and in built-in pipe 1 fill concrete dead for built-in pipe 1 shutoff; Finally complete that raft foundation is concrete builds, by whole built-in pipe 1 all parcel cover (before raft foundation concreting, built-in pipe 1 part that 50mm place is above below raft foundation face being cut off).
In described step S6, the concrete of filling in built-in pipe 1 is the water-tight concrete (C35, P6) of intensity higher than a raft foundation concrete grade.
In described step S3, in built-in pipe 1, put into two submersible pumps, a job, an emergency use.
Data in the present embodiment all with design elevation at the bottom of engineering catchment pit foundation plinth for-9.800m, absolute altitude at the bottom of sump for-8.05m be example.
Above embodiment is only the preferred version of the present invention; but not limitation of the present invention; person skilled in the relevant technique; without departing from the spirit and scope of the present invention; various conversion or modification can also be made; therefore all equivalent technical schemes, all fall into protection scope of the present invention.
Claims (3)
1. a deep foundation ditch elevator shaft sump dewatering construction method, is characterized in that it comprises the following steps:
S1, make built-in pipe (1): get a length and the certain steel pipe of diameter, in the certain limit of steel pipe bottom, offer some inlet openings (2), and be wound around two-layer screen pack (3) around inlet opening (2); Again and inside outside at steel pipe weld respectively the outside seal ring (4) of twice and together with inner seal ring (5), and be all positioned at above inlet opening (2);
S2, in basic unit's earthwork of sump center position, excavate a round hole, the lower end of built-in pipe (1) is injected in circle hole, all inlet openings (2) of built-in pipe (1) lower end are all positioned at round hole, then built-in pipe (1) surrounding adopts cobble to fill up and bury reality in circle hole;
S3, in built-in pipe (1), put into submersible pump, submersible pump continuous firing;
S4, before bed course is built, first on sump basic unit earthwork face, lay layer of plastic film, wrap the built-in pipe (1) of part at built-in pipe (1) place plastic sheeting; Carry out that bed course is built again, the laying of waterproofing course and fish tail and waterproof layer, reinforcing bar binding, model sheetinstallat construction;
S5, raft foundation concreting: when raft foundation concreting is to sump position, the ponding in built-in pipe (1) is drained, extracts submersible pump, and in built-in pipe (1) fill concrete dead for built-in pipe (1) shutoff; Finally complete that raft foundation is concrete builds, by whole built-in pipe (1) all parcel cover.
2. deep foundation ditch elevator shaft sump dewatering construction method according to claim 1, is characterized in that: in described step S6, and the concrete of filling in built-in pipe (1) is the water-tight concrete of intensity higher than a raft foundation concrete grade.
3. deep foundation ditch elevator shaft sump dewatering construction method according to claim 1, is characterized in that: in described step S3, puts into two submersible pumps in built-in pipe (1), a job, an emergency use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410646655.6A CN104452786A (en) | 2014-11-14 | 2014-11-14 | Deep foundation pit elevator shaft sump dewatering construction method |
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| CN201410646655.6A CN104452786A (en) | 2014-11-14 | 2014-11-14 | Deep foundation pit elevator shaft sump dewatering construction method |
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| CN104452786A true CN104452786A (en) | 2015-03-25 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133619A (en) * | 2015-08-07 | 2015-12-09 | 中国一冶集团有限公司 | Construction method for deep foundation pit of elevator shaft |
| CN105155592A (en) * | 2015-10-14 | 2015-12-16 | 中建八局第三建设有限公司 | Base plate pressure reducing device |
| CN105350553A (en) * | 2015-09-25 | 2016-02-24 | 中国二十冶集团有限公司 | Dewatering tube well for foundation pit construction with cover-excavation method and foundation pit construction method |
| CN105350554A (en) * | 2015-11-24 | 2016-02-24 | 北京崇建工程有限公司 | High-water-level foundation pit dewatering construction method |
| CN105756341A (en) * | 2016-04-06 | 2016-07-13 | 中国十七冶集团有限公司 | Installation process of elevator shaft formwork |
| CN106223351A (en) * | 2016-07-26 | 2016-12-14 | 中国二十二冶集团有限公司 | Self priming pump reduces local groundwater level construction method |
| CN108149701A (en) * | 2018-01-27 | 2018-06-12 | 遵化市水务局 | It is a kind of for the shut-in well end pipe of plugging dewatering well and plugging dewatering well method |
| CN108978691A (en) * | 2018-08-17 | 2018-12-11 | 五冶集团上海有限公司 | Precipitation system in foundation pit |
| CN109083175A (en) * | 2018-08-23 | 2018-12-25 | 中国五冶集团有限公司 | The cushion cap foundation pit and its construction method for having continuous drainage function |
| CN110219313A (en) * | 2019-06-05 | 2019-09-10 | 中国五冶集团有限公司 | A kind of underground construction blind shaft drainage system and construction method |
| CN110939143A (en) * | 2019-11-29 | 2020-03-31 | 中国建筑第四工程局有限公司 | Simple and easy core section of thick bamboo stepping water conservancy diversion drainage structures |
| CN110984198A (en) * | 2019-12-13 | 2020-04-10 | 中国十九冶集团有限公司 | Construction method for overbreak of water collecting well |
| CN112593567A (en) * | 2020-11-26 | 2021-04-02 | 中核华辰工程管理有限公司 | Dewatering well structure and construction method |
| CN113236855A (en) * | 2021-04-20 | 2021-08-10 | 武汉一冶建筑安装工程有限责任公司 | Method for taking out pipe jacking machine head when jacking cannot be carried out |
| CN115094930A (en) * | 2022-07-19 | 2022-09-23 | 中铁十一局集团有限公司 | Auxiliary dewatering device and method for basement sump pit or elevator foundation pit |
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| CN203174616U (en) * | 2013-04-02 | 2013-09-04 | 中建城市建设发展有限公司 | Clay foundation rain falling and water saving system |
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| RU2382144C1 (en) * | 2008-05-19 | 2010-02-20 | Общество с ограниченной ответственностью Научно-технический и экспертный центр новых экотехнологий в гидрогеологии и гидротехнике "НОВОТЭК" | Method of draining of tubelike mineral deposit |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133619B (en) * | 2015-08-07 | 2017-07-21 | 中国一冶集团有限公司 | Elevator construction method of deep foundation ditch |
| CN105133619A (en) * | 2015-08-07 | 2015-12-09 | 中国一冶集团有限公司 | Construction method for deep foundation pit of elevator shaft |
| CN105350553A (en) * | 2015-09-25 | 2016-02-24 | 中国二十冶集团有限公司 | Dewatering tube well for foundation pit construction with cover-excavation method and foundation pit construction method |
| CN105155592A (en) * | 2015-10-14 | 2015-12-16 | 中建八局第三建设有限公司 | Base plate pressure reducing device |
| CN105350554A (en) * | 2015-11-24 | 2016-02-24 | 北京崇建工程有限公司 | High-water-level foundation pit dewatering construction method |
| CN105756341B (en) * | 2016-04-06 | 2018-10-26 | 中国十七冶集团有限公司 | A kind of installation steps of hoistway formwork |
| CN105756341A (en) * | 2016-04-06 | 2016-07-13 | 中国十七冶集团有限公司 | Installation process of elevator shaft formwork |
| CN106223351A (en) * | 2016-07-26 | 2016-12-14 | 中国二十二冶集团有限公司 | Self priming pump reduces local groundwater level construction method |
| CN106223351B (en) * | 2016-07-26 | 2019-03-19 | 中国二十二冶集团有限公司 | Self priming pump reduces local groundwater level construction method |
| CN108149701A (en) * | 2018-01-27 | 2018-06-12 | 遵化市水务局 | It is a kind of for the shut-in well end pipe of plugging dewatering well and plugging dewatering well method |
| CN108978691A (en) * | 2018-08-17 | 2018-12-11 | 五冶集团上海有限公司 | Precipitation system in foundation pit |
| CN109083175A (en) * | 2018-08-23 | 2018-12-25 | 中国五冶集团有限公司 | The cushion cap foundation pit and its construction method for having continuous drainage function |
| CN110219313A (en) * | 2019-06-05 | 2019-09-10 | 中国五冶集团有限公司 | A kind of underground construction blind shaft drainage system and construction method |
| CN110219313B (en) * | 2019-06-05 | 2024-01-30 | 中国五冶集团有限公司 | Drainage system and construction method for underground construction blind well |
| CN110939143A (en) * | 2019-11-29 | 2020-03-31 | 中国建筑第四工程局有限公司 | Simple and easy core section of thick bamboo stepping water conservancy diversion drainage structures |
| CN110984198A (en) * | 2019-12-13 | 2020-04-10 | 中国十九冶集团有限公司 | Construction method for overbreak of water collecting well |
| CN112593567A (en) * | 2020-11-26 | 2021-04-02 | 中核华辰工程管理有限公司 | Dewatering well structure and construction method |
| CN113236855A (en) * | 2021-04-20 | 2021-08-10 | 武汉一冶建筑安装工程有限责任公司 | Method for taking out pipe jacking machine head when jacking cannot be carried out |
| CN115094930A (en) * | 2022-07-19 | 2022-09-23 | 中铁十一局集团有限公司 | Auxiliary dewatering device and method for basement sump pit or elevator foundation pit |
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| C06 | Publication | ||
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Application publication date: 20150325 |