CN101624816A - Building method for inverted filter of inner side of artificial island riprap mole island wall - Google Patents
Building method for inverted filter of inner side of artificial island riprap mole island wall Download PDFInfo
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- CN101624816A CN101624816A CN200910033930A CN200910033930A CN101624816A CN 101624816 A CN101624816 A CN 101624816A CN 200910033930 A CN200910033930 A CN 200910033930A CN 200910033930 A CN200910033930 A CN 200910033930A CN 101624816 A CN101624816 A CN 101624816A
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Abstract
The invention discloses a building method for an inverted filter of an inner side of an artificial island riprap mole island wall, which comprises the following steps: (1) a layer of two-slab stone is paved on the inner side of the island wall of the artificial island to form a first slope inverted filter; a layer of gravel is paved outside the island wall to form a second slope inverted filter; and then needle-punched composite geotextile is paved; (2) a first layer of big filling bag is paved outside the needle-punched composite geotextile; after the first layer of big filling bag is filled with sand, the mouth of the bag is tightly tied; (3) a second layer of big filling bag is paved on the first layer of big filling bag, and then the process of the step 1 (2) is repeated, the steps are analogized in sequence till a multi-layer big filling bag piling and ramparting back pressure under a normal water line is finished; a multi-layer small filling bag is filed and ramparted above the normal water line till the elevation is 6.8 to 7.2 meters and develops along the length direction of the island wall of the artificial island to finish the whole pilling and ramparting process. The invention increases the building quality of the inverted filter and reduces the building cost.
Description
Technical field
The present invention relates to a kind of construction method of man-made island, relate in particular to the construction method of the inboard antiseep inverted filter of a kind of man-made island jackstone dike island wall, belong to the hydraulic engineering technical field.
Background technology
Existing man-made island generally be built in inshore or near have island to shelter neritic province domain, constitute by the island wall and the accumulation sand of hydraulic reclamation in the wall of island of the sealing that exceeds water surface number meter.Such man-made island can not be used to build deep water port owing to build neritic province domain in.Build deep water port in some coastal areas that lack the deep water water front, must rely on the off-lying sea man-made island just can build up in the deepwater regions that bank off sea is far away, tidal range is big, rising tide is anxious, and be connected with land by bridge, pipeline.The man-made island engineering is that the shallow sea water front is built the most important link of deep water port.The construction of man-made island is beaten steel sheet pile earlier from building the bottom in zone, island, lays soft raft then thereon.On the boundary line of man-made island build area, build man-made island island wall again with string bag ship multiple spot jackstone, stone begins to pile up until surfacing from water-bed mud face, uses to refute the tipping truck of getting stone from the side and climb up and build up man-made island island wall and progressively advance jackstone to connect point to form the semi-enclosed man-made island island wall that leaves outfall lineally again.The inboard inverted filter of laying antiseep of island wall, use the blast draining in semi-enclosed man-made island of blast ship then, seawater in the man-made island is constantly discharged from outfall, at last with outfall jackstone sealing, form by the sealing island wall and the accumulation sand of hydraulic reclamation in the wall of island that exceed water surface number meter and constituted man-made island.
Inverted filter is for one or more layers anti-leakage structure that prevents that hydraulic fill sand runs off and adopts in the island, between wall inboard, island and hydraulic fill sand.Existing inverted filter adopts the ballast material outside two bigger slabstones, less rubble, geotextiles and the geotextiles to form after the wall moulding of jackstone island.The ballast material often adopts the method for throwing back-up sand bag ballast or backfill sand/rubble ballast, throw back-up sand bag ballast and occur the space easily, be in loose condition (of surface) after backfill sand or the gravel backfill, do not close up in the building course as yet in the wall moulding of man-made island island, off-lying sea, because outside water surface elevation difference is very big in the wall of island in seawater fluctuation tide process, inverted filter has been produced very big osmotic pressure, current through crack of stone infiltration inverted filter are bigger at the incoming tide, the phenomenon that the inverted filter gradient changes has appearred, cause geotextiles often to be torn, even burst inverted filter and make it can't build moulding.
Summary of the invention
The purpose of this invention is to provide a kind of method simple, build the construction method of inverted filter easily, this method has overcome because the off-lying sea macrotidal range causes in the wall of man-made island island outside water surface elevation difference very big, inverted filter can't be built the difficulty of moulding.
The present invention is achieved by the following technical programs:
A kind of construction method of inverted filter of inner side of artificial island riprap mole island wall comprises following stage of construction:
(1) the inboard first slope inverted filter of laying 1: 1.25 gradient of one deck two slabstones formation of 1: 1 island wall of the man-made island after moulding; Then lay the second slope inverted filter that one deck rubble forms 1: 1.5, outside the second slope inverted filter, lay the acupuncture composite earthwork cloth again in its outside.
(2) lay the big filling bag of first floor earlier at acupuncture composite earthwork cloth and the inboard toe of man-made island island wall place, the blast pipe with the blast ship fills sand to the big filling bag of first floor then, tightens sack after the big filling bag of first floor is full of sand.
(3) on the big filling bag of the first floor that is full of sand, re-lay the big filling bag of the second layer, the process of repeating step 1 (2) then, and the like, build back-pressure until the Sha Hedui that fills that finishes the big filling bag of multilayer; When filling of building of heap after big filling bag behind the sand surpasses normal water line, change heap into and build multilayer and fill little filling bag behind the sand until 6.8～7.2 meters of absolute altitudes.
(4) after the process of completing steps 1 (1)～1 (3), length direction along man-made island island wall, front end in the big filling bag of first floor of tightening sack re-lays big filling bag, the process of repeating step 1 (1)～1 (3) then being filled sand and heap base back-pressure process layer by layer until finishing along the inboard whole fill bag of island wall.
Purpose of the present invention can also further realize by following technical measures.
The construction method of aforesaid inverted filter of inner side of artificial island riprap mole island wall, wherein said acupuncture composite earthwork cloth adopts 450g/m
2Nonwoven and 230g/m
2Woven cloth carries out the compound formation 680g/m of acupuncture
2Woven Compound Fabric, fabric width are 28～30 meters.
The construction method of aforesaid inverted filter of inner side of artificial island riprap mole island wall, the specification of wherein said big filling bag are 35 * 5 * 1 meter
3, the specification of little filling bag is 35 * 4 * 1 meter
3
The present invention adopts filling bag to fill the method that Sha Hedui builds the back-pressure geotextiles, it is big to have solved existing inverted filter geotextiles sand pocket ballast space, the sand or the rubble of backfill ballast geotextiles are in loose condition (of surface), the off-lying sea macrotidal range has produced very big osmotic pressure to inverted filter, cause geotextiles to be torn, inverted filter is burst the disadvantage that can't build moulding, improved the build guality of inverted filter, also shortened simultaneously construction duration, reduced construction cost, avoid the do over again generation of phenomenon of inverted filter, reduced the waste of material resources.The present invention adopts nonwoven and the compound geotextiles of woven cloth acupuncture, has improved the tensile strength and the bursting strength of geotextiles, guarantees the huge pulling force that geotextiles can be born in construction period; The scale geotextiles of 28～30 meters of fabric widths is adopted in the laying of geotextiles of the present invention, has improved efficiency of construction.
Advantage of the present invention and characteristics will illustrate by the non-limitative illustration of following preferred embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is the man-made island island wall sectional drawing that adopts the present invention to build.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figure 1, about 13 kilometers of the nearest land-based area coastline of the man-made island of present embodiment, 8.08 meters of tidal range up, Peak Flow Rate reaches 2 meter per seconds at the incoming tide, does not have shielding on every side, belongs to the off-lying sea isolated island, current, meteorology, the operating mode complexity such as washes away.
Stage of construction of the present invention is as follows:
(1) 1: 1 jackstone dike island wall of the man-made island after moulding, the 1 inboard first slope inverted filter 2 of laying 1: 1.25 gradient of one deck two slabstones formation; Then side place mat one deck rubble forms 1: 1.5 the second slope inverted filter 4 within it, lays acupuncture composite earthwork cloth 5 again outside the second slope inverted filter 4;
(2) lay the big filling bag 6 of first floor at acupuncture composite earthwork cloth inverted filter 5 earlier with the inboard toe of man-made island jackstone dike island wall place, the blast pipe with the blast ship fills sand to the big filling bag 6 of first floor then, tightens sack after the big filling bag 6 of first floor is full of sand.The specification of big filling bag 6 is 35 * 5 * 1 meter
3, fill the normal pressure that forms behind the sand the 3rd layer of acupuncture composite earthwork cloth 5.
(3) on the big filling bag 6 of the first floor that is full of sand, re-lay the big filling bag 6 of the second layer, the process of repeating step 1 (2) then, and the like, build back-pressure until the Sha Hedui that fills that finishes the big filling bag 6 of multilayer; When filling of building of heap after big filling bag 6 behind the sand arrives 5 meters normal water lines of present embodiments, change into heap build multilayer fill on normal water line A 6.8～7.2 meters of little filling bag 7 behind the sand apart from B, little filling bag 7 specifications are 35 * 4 * 1 meter
3
(4) after the process of completing steps 1 (1)～1 (3), length direction along man-made island jackstone dike island wall 1, front end in the big filling bag 6 of the first floor of tightening sack re-lays big filling bag 6, the process of repeating step 1 (1)～1 (3) then, until finish the whole fill bag fill sand and layer by layer heap build the back-pressure process.
The present invention adopt the mode that under normal water line, adopts the heap that adopts the little filling bag 7 of multilayer on the big filling bag 6 of multilayer, the normal water line to build the back-pressure inverted filter to be because: because the off-lying sea macrotidal range has produced very big osmotic pressure to inverted filter under the normal water line, need bigger counter-pressure to resist, therefore adopt heap to build the method for the big filling bag 6 of multilayer; And do not have water pressure on the normal water line, the therefore mode of the little filling bag 7 of employing heap base multilayer, and little filling bag 7 need not be piled and be built wall top, man-made island island, can save material, and shortens the construction period of inverted filter, reduces construction cost.
The acupuncture composite earthwork cloth 5 that the present invention lays adopts by 450g/m
2Nonwoven and 230g/m
2Woven cloth carries out the compound formation 680g/m of acupuncture
2Woven Compound Fabric, fabric width is 28～30 meters, adopts double-deck acupuncture composite earthwork cloth 5 can improve the tensile strength and the bursting strength of geotextiles, and is not fragile in the use; Present embodiment adopts the geotextile laying of 30 meters fabric widths, has shortened construction period, has improved operating efficiency.
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (3)
1. the construction method of an inverted filter of inner side of artificial island riprap mole island wall is characterized in that: comprise following stage of construction:
(1) the inboard first slope inverted filter of laying 1: 1.25 gradient of one deck two slabstones formation of 1: 1 jackstone dike island wall of the man-made island after moulding, then lay the second slope inverted filter that one deck rubble forms 1: 1.5, outside the second slope inverted filter, lay the acupuncture composite earthwork cloth again in its outside;
(2) lay the big filling bag of first floor earlier at composite earthwork cloth and the inboard toe of man-made island jackstone dike island wall place, the blast pipe with the blast ship fills sand to the big filling bag of first floor then, tightens sack after the big filling bag of first floor is full of sand.
(3) on the big filling bag of the first floor that is full of sand, re-lay the big filling bag of the second layer, the process of repeating step 1 (2) then, and the like, build back-pressure until the Sha Hedui that fills that finishes the big filling bag of multilayer, the specification of big filling bag is 35 * 5 * 1 meter
3When filling of building of heap after big filling bag behind the sand surpasses normal water line, change heap into and build multilayer and fill little filling bag behind the sand until 6.8～7.2 meters of absolute altitudes; The specification of little filling bag is 35 * 4 * 1 meter
3
(4) after the process of completing steps 1 (1)～1 (3), length direction along man-made island island wall, front end in the big filling bag of first floor of tightening sack re-lays big filling bag, the process of repeating step 1 (1)～1 (3) then being filled sand and heap base back-pressure process layer by layer until finishing along the inboard whole fill bag of jackstone dike island wall.
2. the construction method of inverted filter of inner side of artificial island riprap mole island wall according to claim 1 is characterized in that: described acupuncture composite earthwork cloth employing 450g/m
2Nonwoven and 230g/m
2Woven cloth carries out the compound formation 680g/m of acupuncture
2Woven Compound Fabric, fabric width are 28～30 meters.
3. the construction method of inverted filter of inner side of artificial island riprap mole island wall according to claim 1 and 2, it is characterized in that: the specification of described big filling bag is 35 * 5 * 1 meter
3, the specification of little filling bag is 35 * 4 * 1 meter
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100339306A CN101624816B (en) | 2009-06-12 | 2009-06-12 | Building method for inverted filter of inner side of artificial island riprap mole island wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100339306A CN101624816B (en) | 2009-06-12 | 2009-06-12 | Building method for inverted filter of inner side of artificial island riprap mole island wall |
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| CN101624816A true CN101624816A (en) | 2010-01-13 |
| CN101624816B CN101624816B (en) | 2011-05-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162227A (en) * | 2011-03-02 | 2011-08-24 | 安徽省水利水电勘测设计院 | Underwater slope backing method of bulky sand filled geotechnical pillow bags |
| CN105297674A (en) * | 2015-10-10 | 2016-02-03 | 国家海洋局第三海洋研究所 | Shingle beach section design method under conditions of strong coastal dynamic |
| CN109355990A (en) * | 2018-11-29 | 2019-02-19 | 中国电建集团成都勘测设计研究院有限公司 | Low-level bog area hydraulic reclamation ultra fine sand road structure |
| CN111335263A (en) * | 2020-03-12 | 2020-06-26 | 中交第三航务工程局有限公司 | Method for building artificial island |
-
2009
- 2009-06-12 CN CN2009100339306A patent/CN101624816B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162227A (en) * | 2011-03-02 | 2011-08-24 | 安徽省水利水电勘测设计院 | Underwater slope backing method of bulky sand filled geotechnical pillow bags |
| CN105297674A (en) * | 2015-10-10 | 2016-02-03 | 国家海洋局第三海洋研究所 | Shingle beach section design method under conditions of strong coastal dynamic |
| CN109355990A (en) * | 2018-11-29 | 2019-02-19 | 中国电建集团成都勘测设计研究院有限公司 | Low-level bog area hydraulic reclamation ultra fine sand road structure |
| CN109355990B (en) * | 2018-11-29 | 2023-09-19 | 中国电建集团成都勘测设计研究院有限公司 | Ultra-fine sand roadbed structure for hydraulic filling in low-lying marsh areas |
| CN111335263A (en) * | 2020-03-12 | 2020-06-26 | 中交第三航务工程局有限公司 | Method for building artificial island |
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| Publication number | Publication date |
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| CN101624816B (en) | 2011-05-11 |
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Granted publication date: 20110511 Termination date: 20130612 |