CN104314090A - Deep foundation pit bedrock drainage culvert and drainage system and drainage construction method thereof - Google Patents
Deep foundation pit bedrock drainage culvert and drainage system and drainage construction method thereof Download PDFInfo
- Publication number
- CN104314090A CN104314090A CN201410436998.XA CN201410436998A CN104314090A CN 104314090 A CN104314090 A CN 104314090A CN 201410436998 A CN201410436998 A CN 201410436998A CN 104314090 A CN104314090 A CN 104314090A
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- foundation ditch
- drainage
- covered conduit
- foundation pit
- deep foundation
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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
- E02D19/22—Lining sumps in trenches or other foundation pits
-
- 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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Sewage (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a deep foundation pit bedrock drainage culvert and a drainage system and drainage construction method thereof, belongs to the field of drainage construction in building deep foundation pit construction. The deep foundation pit bedrock drainage culvert comprises a U-shaped ditch dug in a foundation pit, a drain pipe arranged inside the ditch along the ditch, geotechnical cloth arranged along the ditch and used for closing a ditch port, and a concrete cushion used for covering the geotechnical cloth and laid on the surface of the foundation pit, wherein the part between the drain pipe and the geotechnical cloth is filled with gravels; a plurality of water-permeating holes are formed in the pipe wall of the drain pipe; the drain pipe is filled with gravels. The drainage system adopts the structure as follows: a plurality of communicated culverts are arranged in the foundation pit; a plurality of water-collecting pits, and a sand-settling tank communicated with the water-collecting pits through a pump and pipes are arranged at the bottom of the foundation pit. The deep foundation pit bedrock drainage culvert is high in construction speed, high in efficiency and reliable, and can effectively solve the problem of drainage of foundation pit bedrock fissure water.
Description
Technical field
The invention belongs to the drainage construction field in construction work deep foundation pit construction, particularly relate to deep foundation ditch Bedrock Crevice Water drainage construction.
Background technology
The common dewatering mode of excavation of foundation pit is for beat dewatering well in foundation ditch surrounding.But the general bearing stratum of deep foundation ditch is middle weathering shale layer (deep foundation ditch refers generally to the foundation ditch of more than degree of depth 20m), and surrounding dewatering well acts on not quite for the row that falls of Bedrock Crevice Water.Conventional method in foundation ditch, arranges bright gutter carry out draining, and then subregion construction cushion coat, waterproof, assembling reinforcement, last concentrating before concreting carry out Seal treatment (construction cushion coat, waterproof etc.) to bright gutter.The method is in work progress, due to subregion construction, and the separately successively construction of main body and waterproof, often easily affect construction speed and quality, and when in the end concentrating the operations such as the bed course in construction drainage ditch region and waterproof, because crevice water is still constantly oozing out, often not easily ensure bed course and waterproof construction quality, leave infiltration hidden danger.
Summary of the invention
The object of the invention is to: propose a kind of construction fast, efficient, reliable, effectively can solve the deep foundation ditch basement rock underground run off of deep foundation ditch Bedrock Crevice Water drainage problem and drainage system thereof and drainage and construction method.
The object of the invention is realized by following technical proposals:
A kind of deep foundation ditch basement rock underground run off, be included in the U-shaped groove that foundation ditch excavates, the gutter in groove is layed in along groove, along the geotextiles of the closed notch that groove is laid, and cover described geotextile laying in the concrete cushion on foundation ditch surface, between described gutter and geotextiles, rice stone is filled, and described gutter tube wall offers some permeable holes, and in pipe, rice stone is filled.
In such scheme, U-shaped groove can collect Bedrock Crevice Water, offer the gutter of permeable hole then in order to be drained by the crevice water collected, the inside and outside rice stone of filling of gutter then plays a role in filtering on the one hand, avoid fine deposit laying dust to deposit blocking drainage system, ensure that the long time stability that covered conduit runs, another side changes hollow-core construction into real cored structure, the ingenious structure stress problem solving covered conduit, kills two birds with one stone again; It is less that described meter Shi refers to particle diameter conventional in the realm of building construction, and shape is as the rubble of the grain of rice; Geotextiles, then in order to isolation top concrete construction, avoids fine deposit to block groove; Concrete cushion then last covering by whole covered conduit is hidden, and both ensure that subsequent construction did not impact covered conduit, and also ensure that covered conduit can not subsequent construction impact.
As selection, also comprise the gutter be communicated with between foundation ditch high-low bay covered conduit, and the alien invasion layer of foundation ditch high-low bay concrete cushion is connected along facade, described gutter tube wall offers some permeable holes, in pipe, rice stone is filled, the stone concrete layer of described alien invasion layer by bottom, the solid brick brick plies on top, and the waterproofing mortar floated coat of alien invasion is formed.
In such scheme, the gutter be communicated with between foundation ditch high-low bay covered conduit had both been communicated with the covered conduit between high-low bay, can guide draining again to the facade Bedrock Crevice Water between high-low bay simultaneously; Alien invasion layer then can the gutter of opposite be protected, and can play further waterproof action again simultaneously.
A kind of deep foundation ditch basement rock underdrainage system, comprise aforementioned covered conduit, some covered conduits be connected are arranged at foundation ditch, some sumps are arranged in foundation ditch substrate, and by sand trap that pump and pipeline are communicated with described sump, described covered conduit comprises the ring shape covered conduit arranged along foundation ditch substrate edge, at the spaced apart some vertical covered conduit be communicated with this annular covered conduit of foundation pit side-wall, at the described annular covered conduit of connection of foundation ditch substrate separation layout and some covered conduits of sump.
In such scheme, the annular covered conduit arranged by foundation ditch substrate edge collects the Bedrock Crevice Water of foundation pit side-wall, vertical covered conduit simultaneously on sidewall guides crevice water further to annular covered conduit, crevice water in annular covered conduit is pooled to sump through the covered conduit of substrate again, pump is to sand trap again, forms complete crevice water drainage system.
As selection, be also included in the low covered conduit across arranging along edge of described foundation ditch high-low bay, this covered conduit and foundation ditch low across covered conduit be communicated with.
In such scheme, collected the Bedrock Crevice Water of high-low bay facade by the low covered conduit across arranging along edge, and drained by the low covered conduit stepped up.
The drainage and construction method of aforementioned deep foundation ditch basement rock underdrainage system, comprises the following steps successively:
1) after excavation pit to large face absolute altitude, according to Water drainage system design excavation groove, sump and sand trap;
2) gutter of filling meter Shi is installed in groove;
3) groove fills up by meter Shi, upper berth geotextiles one deck;
4) build blinding concrete, construct top waterproof and other operations simultaneously;
5) Bedrock Crevice Water carries out flowing from the covered conduit below bed course and converges to sump, then by pump and tubing pump to sand trap.
In such scheme, by the mode of underdrainage system, avoid the construction of prior art subregion, and the problem that main body and waterproof are separately successively constructed, can after the complete underdrainage system of one-off construction, property construction cushion coat and waterproofing course again, the hidden danger avoiding the later stage to focus on bright gutter producing, substantially increases efficiency of construction simultaneously.
As selection, described sump and sand trap utilize existing structure or civil defence structure construction.
The main scheme of aforementioned the present invention and each further selection scheme thereof can independent assortment to form multiple scheme; be the present invention can adopt and claimed scheme: as the present invention; each selection can select any combination with other; those skilled in the art can understand there is multiple combination according to prior art and common practise after understanding the present invention program; be the claimed technical scheme of the present invention, do not do exhaustive at this.
Beneficial effect of the present invention: avoid the construction of prior art subregion, and the separately successively construction of main body and waterproof, the problem that the waterproof roll caused arch camber by underground crevice water effect, hollowing, top are worn, effectively guiding function is played to the crevice water of basement rock, ensure that the environment of whole construction period drying, do not affect carrying out of covered conduit top working procedure simultaneously, save duration total about more than 20 skies than conventional construction.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention covered conduit;
Fig. 2 is the structural representation of embodiment of the present invention gutter;
Fig. 3 is that the covered conduit of embodiment of the present invention foundation ditch high-low bay arranges schematic diagram;
Fig. 4 is the layout schematic diagram of embodiment of the present invention underdrainage system.
Detailed description of the invention
Following non-limiting examples is for illustration of the present invention.
Shown in 4, a kind of deep foundation ditch basement rock underdrainage system, as shown in Figure 4, be included in foundation ditch 1 and arrange some covered conduits 2 be connected, some sumps 3 are arranged in foundation ditch 1 substrate, and by sand trap 5 that pump and pipeline 4 are communicated with sump 3, covered conduit 2 comprises the ring shape covered conduit 21 arranged along foundation ditch 1 substrate edge, at the some vertical covered conduit be communicated with this annular covered conduit 21 that foundation ditch 1 sidewall spacers is arranged, at the connection annular covered conduit 21 of foundation ditch substrate separation layout and some covered conduits 22 of sump 3.
As shown in Figure 1, aforementioned covered conduit 2 is included in the U-shaped groove 6 that foundation ditch excavates, and is located at the gutter 7 in groove 6 along groove paving 6, along the geotextiles 8 of the closed notch that groove 6 is laid, and covers the concrete cushion 9 that geotextiles 8 is layed in foundation ditch surface; As shown in Figure 3, also comprise the gutter 7 be communicated with between foundation ditch high-low bay 11 covered conduit, and the alien invasion layer of foundation ditch high-low bay 11 concrete cushion 9 is connected along facade, between gutter 7 and geotextiles 8, rice stone 10 is filled, as shown in Figure 2, gutter 7 tube wall offers some permeable holes 71, and in pipe, rice stone 10 is filled, the stone concrete layer 12 of alien invasion layer by bottom, the solid brick brick plies 13 on top, and the waterproofing mortar floated coat 14 of alien invasion is formed.Gutter 7 can adopt various tubing, preferred pvc pipe.As shown in Figure 4, for the foundation ditch of high-low bay, underdrainage system is also included in the low covered conduit 23 across arranging along edge of foundation ditch high-low bay 11 further, this covered conduit 23 and foundation ditch low across covered conduit be communicated with.
The drainage and construction method of aforementioned deep foundation ditch basement rock underdrainage system, comprises the following steps successively:
1) after excavation pit to large face absolute altitude, according to Water drainage system design excavation groove, sump and sand trap; Sump and sand trap can utilize existing structure or civil defence structure construction.
2) gutter of filling meter Shi is installed in groove;
3) groove fills up by meter Shi, upper berth geotextiles one deck;
4) build blinding concrete, construct top waterproof and other operations simultaneously; These other operations and the subsequent handling of conventional drainage system after concrete cushion and waterproof construction.
5) Bedrock Crevice Water carries out flowing from the covered conduit below bed course and converges to sump, then by pump and tubing pump to sand trap.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a deep foundation ditch basement rock underground run off, it is characterized in that: be included in the U-shaped groove that foundation ditch excavates, the gutter in groove is layed in along groove, along the geotextiles of the closed notch that groove is laid, and cover described geotextile laying in the concrete cushion on foundation ditch surface, between described gutter and geotextiles, rice stone is filled, and described gutter tube wall offers some permeable holes, and in pipe, rice stone is filled.
2. deep foundation ditch basement rock underground run off as claimed in claim 1, it is characterized in that: also comprise the gutter be communicated with between foundation ditch high-low bay covered conduit, and the alien invasion layer of foundation ditch high-low bay concrete cushion is connected along facade, described gutter tube wall offers some permeable holes, in pipe, rice stone is filled, the stone concrete layer of described alien invasion layer by bottom, the solid brick brick plies on top, and the waterproofing mortar floated coat of alien invasion is formed.
3. a deep foundation ditch basement rock underdrainage system, comprise the covered conduit described in claim 1 or 2, it is characterized in that: arrange some described covered conduits be connected at foundation ditch, some sumps are arranged in foundation ditch substrate, and by sand trap that pump and pipeline are communicated with described sump, described covered conduit comprises the ring shape covered conduit arranged along foundation ditch substrate edge, at the spaced apart some vertical covered conduit be communicated with this annular covered conduit of foundation pit side-wall, at the described annular covered conduit of connection of foundation ditch substrate separation layout and some covered conduits of sump.
4. deep foundation ditch basement rock underdrainage system as claimed in claim 3, is characterized in that: the low covered conduit across arranging along edge being also included in described foundation ditch high-low bay, this covered conduit and foundation ditch low across covered conduit be communicated with.
5. the drainage and construction method of the deep foundation ditch basement rock underdrainage system described in claim 3 or 4, is characterized in that comprising the following steps successively:
1) after excavation pit to large face absolute altitude, according to Water drainage system design excavation groove, sump and sand trap;
2) gutter of filling meter Shi is installed in groove;
3) groove fills up by meter Shi, upper berth geotextiles one deck;
4) build blinding concrete, construct top waterproof and other operations simultaneously;
5) Bedrock Crevice Water carries out flowing from the covered conduit below bed course and converges to sump, then by pump and tubing pump to sand trap.
6. the drainage and construction method of deep foundation ditch basement rock underdrainage system as claimed in claim 5, is characterized in that: described sump and sand trap utilize existing structure or civil defence structure construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436998.XA CN104314090A (en) | 2014-08-29 | 2014-08-29 | Deep foundation pit bedrock drainage culvert and drainage system and drainage construction method thereof |
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| CN201410436998.XA CN104314090A (en) | 2014-08-29 | 2014-08-29 | Deep foundation pit bedrock drainage culvert and drainage system and drainage construction method thereof |
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| CN104314090A true CN104314090A (en) | 2015-01-28 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104947699A (en) * | 2015-05-27 | 2015-09-30 | 成都绿迪科技有限公司 | Deep foundation pit drainage structure |
| CN105340411A (en) * | 2015-12-07 | 2016-02-24 | 韩秋华 | Modern agricultural planting hidden layer filter and drainage and water and soil improving high-yield technology blind drain |
| CN106592756A (en) * | 2017-01-23 | 2017-04-26 | 中国建筑第四工程局有限公司 | Karst region step-type basement water drainage structure and construction method thereof |
| CN108343081A (en) * | 2017-01-22 | 2018-07-31 | 北京爱地地质勘察基础工程公司 | Foundation pit side-wall drainage arrangement and construction method |
| CN109736337A (en) * | 2019-02-22 | 2019-05-10 | 宁蔚蔚 | A kind of substrate elevator catch pit drift sand processing guarantees the dewatering device and method of bed course integrality |
| CN109853472A (en) * | 2019-04-04 | 2019-06-07 | 无锡卡麦尔工程科技有限公司 | A kind of river levee construction controlled permeability form lining |
| CN110424988A (en) * | 2019-08-16 | 2019-11-08 | 招商局重庆交通科研设计院有限公司 | Tunnel waterproofing construction and tunnel waterproofing method |
| CN110528545A (en) * | 2018-05-24 | 2019-12-03 | 中铁二院工程集团有限责任公司 | A kind of construction method of the buried draining the region between the heart and the diaphragm ditch of ground |
| CN112609720A (en) * | 2020-12-04 | 2021-04-06 | 中建五局土木工程有限公司 | Precipitation construction method suitable for deep foundation pit of high-pressure-bearing water-rich karst stratum |
| CN114737589A (en) * | 2022-05-30 | 2022-07-12 | 中国二十二冶集团有限公司 | Foundation pit shallow layer drainage method |
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| CN204023596U (en) * | 2014-08-29 | 2014-12-17 | 中铁八局集团建筑工程有限公司 | Deep foundation ditch basement rock underground run off and drainage system thereof |
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| JP4527158B2 (en) * | 2008-03-04 | 2010-08-18 | 大豊建設株式会社 | Leakage recovery device in submersible construction method |
| CN202247922U (en) * | 2011-01-07 | 2012-05-30 | 中国建筑第四工程局有限公司 | Water lowering and discharging device for water collecting well in blind ditch with deep base pit |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104947699A (en) * | 2015-05-27 | 2015-09-30 | 成都绿迪科技有限公司 | Deep foundation pit drainage structure |
| CN105340411A (en) * | 2015-12-07 | 2016-02-24 | 韩秋华 | Modern agricultural planting hidden layer filter and drainage and water and soil improving high-yield technology blind drain |
| CN108343081A (en) * | 2017-01-22 | 2018-07-31 | 北京爱地地质勘察基础工程公司 | Foundation pit side-wall drainage arrangement and construction method |
| CN106592756A (en) * | 2017-01-23 | 2017-04-26 | 中国建筑第四工程局有限公司 | Karst region step-type basement water drainage structure and construction method thereof |
| CN110528545A (en) * | 2018-05-24 | 2019-12-03 | 中铁二院工程集团有限责任公司 | A kind of construction method of the buried draining the region between the heart and the diaphragm ditch of ground |
| CN110528545B (en) * | 2018-05-24 | 2021-03-26 | 中铁二院工程集团有限责任公司 | Construction method of foundation deep-buried drainage blind ditch |
| CN109736337A (en) * | 2019-02-22 | 2019-05-10 | 宁蔚蔚 | A kind of substrate elevator catch pit drift sand processing guarantees the dewatering device and method of bed course integrality |
| CN109853472A (en) * | 2019-04-04 | 2019-06-07 | 无锡卡麦尔工程科技有限公司 | A kind of river levee construction controlled permeability form lining |
| CN110424988A (en) * | 2019-08-16 | 2019-11-08 | 招商局重庆交通科研设计院有限公司 | Tunnel waterproofing construction and tunnel waterproofing method |
| CN112609720A (en) * | 2020-12-04 | 2021-04-06 | 中建五局土木工程有限公司 | Precipitation construction method suitable for deep foundation pit of high-pressure-bearing water-rich karst stratum |
| CN114737589A (en) * | 2022-05-30 | 2022-07-12 | 中国二十二冶集团有限公司 | Foundation pit shallow layer drainage method |
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Application publication date: 20150128 |