CN103711115B - A kind of ground stabilization of overall transportation by driving formula water-fetching head and joint and construction method - Google Patents
A kind of ground stabilization of overall transportation by driving formula water-fetching head and joint and construction method Download PDFInfo
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- CN103711115B CN103711115B CN201310622646.9A CN201310622646A CN103711115B CN 103711115 B CN103711115 B CN 103711115B CN 201310622646 A CN201310622646 A CN 201310622646A CN 103711115 B CN103711115 B CN 103711115B
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Abstract
The ground stabilization of overall transportation by driving formula water-fetching head and joint and a construction method, described ground stabilization and joint, it comprises: one adopts piles set into rock to carry out the water-fetching head ground of consolidation process, described water-fetching head foundation dredging backfill has block stone; The bottom of described water-fetching head is provided with pile protection, and described water-fetching head also pours into by reserved grout pipe the space that water-fetching head to be nested with the pile protection of piles set into rock by underwater concrete and fills; Described construction method comprises: a: arrange rational piles set into rock according to water-fetching head actual conditions and result of calculation and carry out ground stabilization; B: the foundation region of water-fetching head carries out excavating and backfills block stone; C: the pile protection for being nested with piles set into rock is set bottom when water-fetching head makes; Grout pipe is reserved when water-fetching head makes; D: the reserved grout pipe of water-fetching head carries out temporary plugging; E: filled by reserved grout pipe to carry out from top the being in the milk space of encapsulation water-fetching head being nested with piles set into rock.
Description
Technical field
What the present invention relates to is a kind of ground stabilization at complex environment coastal power plant overall transportation by driving formula water-fetching head and joint and construction method, belongs to power generation plant technology field.
Background technology
Current Deposits in Eastern Coastal China economic development is rapid, and power demand is large, and in order to meet the requirement of this area economic development and the raising of people's living standard, country often need drop into huge fund every year for building large-size thermal power plant.Large-size thermal power plant addressing should take into full account convenience and the economy of Coal Transport, taking and discharging, also should consider the factor such as Economization on land and environmental protection simultaneously.Therefore numerous large-size thermal power plant is generally arranged in seashore.Seashore power plant generally adopts once-though cooling mode, fetches water from deep trouth by arranging the forms such as water-fetching head.As better in water-fetching head foundation condition, take the direct transportation by driving of overall transportation by driving formula water intake to put in place and sinking is a kind of mode conventional at present.If water-fetching head foundation condition is complicated, and subaqueous work bad environments, adopt steel drum cofferdam to construct routinely, but the method engineering quantity is large, long in time limit, and there is certain risk.
For certain power plant in Zhejiang water-fetching head, residing waters is marine outfall, Qiantang River briny environment, complex geologic conditions (the weak mud in top, rock stratum, the bottom end face gradient is precipitous), it is very large that construction is subject to Qiantang River tidal bore function influence, needs the factor of consideration very complicated.Design suitable intake strucure form and form of construction work, be no matter can meet that design water intaking requires to engineering, structure durability requirement and safety of structure requirement, or can construction be implemented smoothly, construction quality and can construction speed be guaranteed, can construction costs obtain controlling being all very important.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and provide a kind of safe and reliable, facilitate feasible, the installation of overall transportation by driving formula water intake can be completed, meet engineering safety and schedule requirement, reduce the ground stabilization of the coastal power plant overall transportation by driving formula water-fetching head of construction costs and joint and construction method.
The object of the invention is to have come by following technical solution: the ground stabilization of coastal power plant overall transportation by driving formula water-fetching head and joint, it comprises: one adopts piles set into rock to carry out the water-fetching head ground of consolidation process, described water-fetching head foundation dredging also backfill has block stone and flattens, and the piles set into rock that the ground of described water-fetching head is arranged, the suitable height of backfill block stone is risen out in its stake.
The bottom of described water-fetching head is provided with the pile protection for being nested with piles set into rock, and it is consistent that height and the described rock-socketed bored concrete pile of described pile protection rise out backfill block stone height; Described water-fetching head also to pour into by reserved grout pipe the space that water-fetching head to be nested with the pile protection of piles set into rock by underwater concrete and fills from top, thus water-fetching head and piles set into rock are consolidated.
The ground stabilization of coastal power plant described above overall transportation by driving formula water-fetching head and a construction method for joint, the method comprises the steps:
A: rational piles set into rock is set according to water-fetching head actual conditions and result of calculation and carries out ground stabilization;
B: the foundation region of water-fetching head carries out excavating and backfills block stone, the rock-socketed bored concrete pile on water-fetching head ground rises out the suitable height of backfill block stone;
C: pile protection for being nested with piles set into rock is set bottom when water-fetching head makes, it is consistent that height and the described rock-socketed bored concrete pile of its pile protection rise out backfill block stone height; Grout pipe is reserved when water-fetching head makes;
D: water-fetching head is reserved grout pipe and carried out temporary plugging, puts in place water-fetching head transportation by driving and after sinking, makes water-fetching head be enclosed within piles set into rock;
E: the reserved grout pipe arranged by water-fetching head carry out from top the being in the milk space of pile protection water-fetching head being nested with piles set into rock is filled, thus water-fetching head and piles set into rock are consolidated.
Compared with prior art, advantage of the present invention is: adopt overall transportation by driving formula water intake to reduce construction costs from overall plan, shorten the duration.Under overall transportation by driving formula water intake scheme, take the present invention, solve a difficult problem for the ground stabilization of complex environment water-fetching head and joint process.According to of the present invention, water-fetching head sinking does not need too high precision, reduces difficulty of construction, ensure that the sinking that can complete water-fetching head in the presence of a harsh environment smoothly.Underwater grouting both ensure that water-fetching head was connected with the reliable of stake, made again easy construction feasible.
Overall transportation by driving formula water-fetching head of the present invention has the features such as cost is low, the construction period is short, and risk is controlled.
Accompanying drawing explanation
Fig. 1 is structural plan of the present invention schematic diagram.
Fig. 2 is structural profile schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed introduction is done to the present invention: shown in composition graphs 1,2, the ground stabilization of coastal power plant of the present invention overall transportation by driving formula water-fetching head and joint, it comprises: one adopts piles set into rock to carry out the water-fetching head ground 1 of consolidation process, described water-fetching head ground 1 excavates and has backfilled block stone 2, and the piles set into rock 3 that the ground 1 of described water-fetching head is arranged.
Described water-fetching head 4 is provided with the pile protection 5 for being placed on piles set into rock 3, described water-fetching head 4 also pours into by reserved grout pipe 6 space that water-fetching head is nested with the pile protection 5 of piles set into rock by underwater concrete and fills, thus water-fetching head 4 and piles set into rock 3 are consolidated.
The ground stabilization of coastal power plant described above overall transportation by driving formula water-fetching head and a construction method for joint, the method comprises the steps:
A: rational piles set into rock is set according to water-fetching head actual conditions and result of calculation and carries out ground stabilization;
B: the foundation region of water-fetching head carries out excavating and backfills block stone, the rock-socketed bored concrete pile on water-fetching head ground rises out the suitable height of backfill block stone;
C: pile protection for being nested with piles set into rock is set bottom when water-fetching head makes, it is consistent that height and the described rock-socketed bored concrete pile of its pile protection rise out backfill block stone height; Grout pipe is reserved when water-fetching head makes;
D: water-fetching head is reserved grout pipe and carried out temporary plugging, puts in place water-fetching head transportation by driving and after sinking, makes water-fetching head be enclosed within piles set into rock;
E: the reserved grout pipe arranged by water-fetching head carry out from top the being in the milk space of hole water-fetching head being nested with piles set into rock is filled, thus water-fetching head and piles set into rock are consolidated.
Embodiment:
Certain power plant in Zhejiang engineering is using Seawater of Hangzhou Bay as circulating cooling water source.Hangzhou Wan is strong tidal sea gulf world-famous.At the incoming tide, tidal wave imports into from off-lying sea, has two bursts of trends to the east of the mouth of Kingsoft, namely the southeast rise and northeast rise, five dish to the north of cross, directly become along Hangzhou Wan north side Ganpu.During ebb tide, marine site, the Hangzhou Wan southeast first falls, and impels Hangzhou Wan fluctuation tide main shaft to be consistent.General flood strength is large, and half tide mean flow rate is 1.16m/s, and actual measurement Peak Flow Rate reaches 2.45m/s.The point bar in six li of gulfs has suitable, counterclockwise a backflow to occur in flood tide intermediary and later stages and ebb tide later stage respectively.Top, stratum, water-fetching head position is mud, and bottom is rock stratum, and face, the rock stratum gradient is precipitous, and the gradient is greater than 60 °.It is very large that water-fetching head construction is subject to Qiantang River tidal bore function influence, and foundation condition is complicated.Completing smoothly for ensureing that water-fetching head ground stabilization and joint process are constructed, taking detailed description of the invention as follows:
The first step: rational piles set into rock is set according to water-fetching head actual conditions and result of calculation and carries out ground stabilization;
Second step: water-fetching head foundation region carry out excavating and backfill block stone with solve wash away problem, water-fetching head rock-socketed bored concrete pile rises out the suitable height of backfill block stone;
3rd step: pile protection for being nested with piles set into rock is set bottom when water-fetching head makes, it is consistent that height and the described rock-socketed bored concrete pile of its pile protection rise out backfill block stone height; Grout pipe is reserved when water-fetching head makes;
4th step: water-fetching head is reserved grout pipe and carried out temporary plugging, puts in place water-fetching head transportation by driving and after sinking, makes water-fetching head be enclosed within piles set into rock;
5th step: the reserved grout pipe arranged by water-fetching head carry out from top the being in the milk space of pile protection water-fetching head being nested with piles set into rock is filled, thus water-fetching head and piles set into rock are consolidated.
According to this programme, sinking and the installation of water-fetching head can be completed in the presence of a harsh environment smoothly, meet engineering safety and schedule requirement, reduce construction costs.
Claims (1)
1. the overall ground stabilization of transportation by driving formula water-fetching head and the construction method of joint, the ground stabilization of described overall transportation by driving formula water-fetching head and joint, it comprises the water-fetching head ground that an employing piles set into rock carries out consolidation process, described water-fetching head foundation dredging also backfill has block stone, and the piles set into rock that the ground of described water-fetching head is arranged, the suitable height of backfill block stone is risen out in its stake;
The bottom of described water-fetching head is provided with the pile protection for being nested with piles set into rock, described water-fetching head also pours into by reserved grout pipe the space that water-fetching head to be nested with the pile protection of piles set into rock by underwater concrete and fills, thus water-fetching head and piles set into rock are consolidated;
It is characterized in that described construction method comprises the steps:
A: rational piles set into rock is set according to water-fetching head actual conditions and result of calculation and carries out ground stabilization;
B: the foundation region of water-fetching head carries out excavating and backfills block stone, the rock-socketed bored concrete pile on water-fetching head ground rises out the suitable height of backfill block stone;
C: pile protection for being nested with piles set into rock is set bottom when water-fetching head makes, it is consistent that height and the described rock-socketed bored concrete pile of its pile protection rise out backfill block stone height; Grout pipe is reserved when water-fetching head makes;
D: the reserved grout pipe of water-fetching head carries out temporary plugging, puts in place water-fetching head transportation by driving and after sinking, makes water-fetching head be enclosed within piles set into rock;
E: the reserved grout pipe arranged by water-fetching head carry out from top the being in the milk space of pile protection water-fetching head being nested with piles set into rock is filled, thus water-fetching head and piles set into rock are consolidated.
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| CN201310622646.9A CN103711115B (en) | 2013-11-30 | 2013-11-30 | A kind of ground stabilization of overall transportation by driving formula water-fetching head and joint and construction method |
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| CN201310622646.9A CN103711115B (en) | 2013-11-30 | 2013-11-30 | A kind of ground stabilization of overall transportation by driving formula water-fetching head and joint and construction method |
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| CN103711115A CN103711115A (en) | 2014-04-09 |
| CN103711115B true CN103711115B (en) | 2016-01-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104074234B (en) * | 2014-07-16 | 2016-02-03 | 中国能源建设集团广东省电力设计研究院有限公司 | The interior river intake structure of electric power plant circulating water system and construction method thereof |
| CN110258725A (en) * | 2019-05-13 | 2019-09-20 | 中国华冶科工集团有限公司 | Water works water tank fabrication and installation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086634A (en) * | 2011-01-07 | 2011-06-08 | 广东省电力设计研究院 | Marine underwater assembled water intake and construction method thereof |
| JP2011220108A (en) * | 2011-07-06 | 2011-11-04 | Railway Technical Research Institute | Embankment construction method on soft ground and embankment structure thereof |
| GB2497274A (en) * | 2011-11-24 | 2013-06-12 | Aspin Foundations Ltd | Vehicle station platform system |
| CN203213136U (en) * | 2013-01-24 | 2013-09-25 | 中交公路规划设计院有限公司 | Caisson and pile combined foundation of consolidated subsoil |
| CN203684205U (en) * | 2013-11-30 | 2014-07-02 | 浙江省电力设计院 | Foundation reinforcement and joint for integral floating intake head |
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- 2013-11-30 CN CN201310622646.9A patent/CN103711115B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086634A (en) * | 2011-01-07 | 2011-06-08 | 广东省电力设计研究院 | Marine underwater assembled water intake and construction method thereof |
| JP2011220108A (en) * | 2011-07-06 | 2011-11-04 | Railway Technical Research Institute | Embankment construction method on soft ground and embankment structure thereof |
| GB2497274A (en) * | 2011-11-24 | 2013-06-12 | Aspin Foundations Ltd | Vehicle station platform system |
| CN203213136U (en) * | 2013-01-24 | 2013-09-25 | 中交公路规划设计院有限公司 | Caisson and pile combined foundation of consolidated subsoil |
| CN203684205U (en) * | 2013-11-30 | 2014-07-02 | 浙江省电力设计院 | Foundation reinforcement and joint for integral floating intake head |
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Address after: No. 68 GUCUI Road, Hangzhou, Zhejiang Province Patentee after: Energy source in China construction group Zhejiang Province Power Design Institute Co., Ltd Address before: No. 68 GUCUI Road, Hangzhou, Zhejiang Province Patentee before: Zhejiang Electric Power Design Institute |
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