CN100582382C - Process for constructing quickly consolidated temperory horizontal platform by picking clay of lake bottom - Google Patents
Process for constructing quickly consolidated temperory horizontal platform by picking clay of lake bottom Download PDFInfo
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- CN100582382C CN100582382C CN200810195553A CN200810195553A CN100582382C CN 100582382 C CN100582382 C CN 100582382C CN 200810195553 A CN200810195553 A CN 200810195553A CN 200810195553 A CN200810195553 A CN 200810195553A CN 100582382 C CN100582382 C CN 100582382C
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Abstract
The invention relates to a process method for constructing a fast consolidated waterside platform by using clay from the bottom of a lake. The method does not use the conventional filling method for construction, but takes entire blocks of clay from the bottom of the lake and transports the clay to a lakeside for embanking, and comprises the following steps: channel excavation, breakwater construction, clay taking from the bottom of the lake, clay material transportation, clay unloading, clay pushing transportation and leveling, and ship channel backfilling. The waterside platform is a platform along the lake shoreline and can be designed into various shapes according to requirements, wherein the width is between 10 and 300 meters, the water depth at the waterside platform is between 1 and 3 meters, and the crest level of the platform is at least 0.5 meter higher than the normal water level. The method can use conventional barges of an internal lake to transport block stones to a filling surface through a ship channel directly, and adopt mechanical dumping to reduce labor intensity and shorten construction period; and the method can achieve the aim of constructing the waterside platform on the lake shoreline, which can consolidate fast and satisfy the requirements of lakeshore stability and bearing after the filling construction through taking the clay from the bottom of the lake. The method can reduce 30 to 50 percent of the investment compared with taking the clay from land to fill the platform, and can reduce two thirds to three fourths of the investment compared with sucking the clay from the bottom of the lake and then performing a secondary consolidation.
Description
Technical field
The invention belongs to improvement of the ecological environment and resist technology field, relate to civil engineering, be specifically related to a kind ofly get clay from lakebed and build the process that rapidly solidified platform near water carries out lake water front comprehensive improvement.
Background technology
Along with social development; reinforcement is particularly urgent to the requirement of water environment regulation; need in conjunction with flood control and view; water front regulation in lake often requires to fill bank pin platform, forest against wave wash platform and the view leisure platform etc. that satisfy the stable and load bearing requirements of loke shore at the lake offshore; but must not fetch earth from land according to the environmental protection relevant regulations and to fill out the lake, can only get lakebed soil in conjunction with the lake dredging and fill platform.
Small-sized lake or pool are generally drained lake (pool) water back machinery or manually get lakebed soil and fill.Lake, big-and-middle-sized river can not drain water, platform fills general employing towards filling out the method construction near water, adopt method formation cofferdam such as jackstone earlier in the platform leading edge, adopt the waterpower cutting soil in the lakebed borrow area, soil block is become small grogs, with water is carrier, with pipe method ped is delivered in the jackstone cofferdam to reach design altitude.It is bigger that sand is formed particle, is singlegrained structure under nature, can comparatively fast precipitate fixed in the stockyard.It is very little that clay is formed particle, is generally a plurality of particles and constitutes block structures, and the small grogs of clay can not condense the big power of the holding soil block of fixed formation for a long time under the saturated substantially state in stockyard.
The easy discharging consolidation of sand, but most of lakebed is a clay, conventional method are inhaled clay from lakebed and are dashed and fill out heap and build near water that there is following problem in platform:
(1) offshore place lake water is more shallow, the platform leading edge jackstone cofferdam difficulty of jettisoninging;
(2) towards filling out a large amount of seepages of clay, the serious backflow, lake water is caused pollution in wide area;
(3) consider the hydrophily requirement, the platform end face is only a little more than general lake stage near water, and all be submerged under water flood season in short-term, and drainage condition is poor, and the soil body for a long time can not be fixed, can not satisfy loke shore stability requirement and crowd's upper mounting plate leisure sightseeing load bearing requirements;
(4) it is very poor to dash the clay engineering property fill out from lakebed, and dashing needs to spend a large amount of funds after filling out and carry out consolidation process, lays layer of sand as the surface, plugs band drain and adds that preloading or vacuum drainage are fixed to wait measure, so, generally still need several years ability fixed.
Dash the method for filling out at routine and get the problem that clay is built platform existence near water, propose not destroy when fetching earth the existing framework of ball clay, transport the theory that earth material keeps the original soil block structure as far as possible, improves stockyard soil solidifying condition from lakebed.Under the prerequisite of findding out lakebed earth material performance, fetch earth, muck haulage, unload native peaceful perfect square formula by change, reduce as far as possible and destroy the grogs framework, arrange in conjunction with the muck haulage navigation channel, improve stockyard consolidation condition and safeguard procedures, choose reasonable technological parameter and various machinery coupling are on the basis of reasonable fabrication cost, getting from lakebed that clay fills can be rapidly solidified, satisfies the platform near water of the stable and view platform load-bearing requirement of loke shore.
Summary of the invention
To get clay from lakebed and fill rapidly solidified platform near water in order to solve, and satisfy the problem of the stable and view platform load-bearing requirement of loke shore, the invention provides a kind of clay under lake of getting and build the rapidly solidified method of platform technology near water.
The present invention gets clay under lake and builds the technological process of the rapidly solidified method of platform technology near water and be: the excavation navigation channel----lakebed fetches earth--earth material transportation----pushing smooth earth material--backfill navigation channel of unloading soil of building breakwater.
The concrete operations step is as follows:
(1) the default zone of filling
The platform near water of the default line that anchors alongside the shore along the lake fills the zone;
(2), excavation navigation channel
Side excavation navigation channel near water, zone is filled on edge platform near water, and described navigation channel one end stretches into the borrow area in the lake; Utilize the channel excavation earthwork in the navigation channel the inboard same period fill near water and separate the cofferdam in the platform;
(3) build breakwater
In the navigation channel outside, platform leading edge near water, fill block stone throwing is filled out breakwater;
(4) lakebed fetches earth
Be not less than from the lake water front outside 300 meters distances, becoming piece to take clay under lake by the permeable grid type hydraulic grab that is provided with aboard ship;
(5) earth material transportation
Clay under lake is transported near water through T shape navigation channel by the borrow area by hopper, and platform fills the zone;
(6) unload soil
Hydraulic backhoe near water platform separate on the cofferdam and to unload soil to platform near water nearby from muck haulage hopper in the navigation channel and fill the zone;
(7) push smooth earth material
Separate the cofferdam and platform is filled the zone be divided into zone more than two, drain and separate ponding in the scope of cofferdam, change under the condition of nonirrigated farmland by subaqueous construction and transport blading; Repeating step (3), (4), (5), (6) are finished the inboard platform in separation cofferdam and are filled;
(8) backfill navigation channel
Fill and lead up pre-heap clay under lake that lakebed is got on the platform in the inboard, navigation channel, formed the platform near water that requires shape with clay under lake backfill navigation channel again;
Platform is the platform of the line that anchors alongside the shore along the lake near water, and width is a 10-300 rice, and the platform place depth of water is 1-3 rice near water, and its crest level is higher than ordinary water level and is not less than 0.5 meter.
Described navigation channel is T shape navigation channel, and the zone is filled with platform near water in the horizontal navigation channel in T shape navigation channel, and side is parallel near water, and the borrow area that the lake is gone into is stretched in the opposite side navigation channel; Described navigation channel is suitable for reading to be not less than 2m apart from the levee toe distance, and the navigation channel bottom width is 8-12m, and wide 12-18m suitable for reading satisfies 1 barge discharging, another requirement of passing through, and fairway depth is not less than 2.5m.
Described berm width is greater than 40 meters, and the navigation channel is arranged in platform and fills in the zone; It is overseas to require height the navigation channel should be arranged in the platform reclamation district to berm width less than 40 meters or platform fill compaction degree, drains and separates ponding in the cofferdam, builds platform under the condition of nonirrigated farmland, removes separation backfilling of earthwork navigation channel, cofferdam at last.
The breakwater crest level is higher than ordinary water level 0.5m, top width 0.5-2m, and the outer gradient is 1: 1.5, the inner slope gradient is 1: 1.3-1.5, the inner slope side should add throws rubble and yellow ground 0.3-0.6m formation loaded filter.
The degree of depth that takes clay under lake is a 1-3 rice.
The interior separation of platform cofferdam crest level is higher than ordinary water level and is not less than 0.5m, and toe is the 1m that is not less than suitable for reading apart from the navigation channel, and side slope is the native gradient, the top width 6-10m of forming naturally in the water.
Useful technique effect of the present invention is embodied in following several aspect:
(1) offshore flat roof area lake water is more shallow, and routine needs secondary transhipment manual jettisoning to form towards embankment method jackstone breakwater.This method can adopt the conventional barge in inland lake directly to transport piece stone through the navigation channel to surface of filling, and machinery is jettisoninged, and has reduced labour intensity, has shortened the construction period;
(2) adopt the hydraulic grab or the hydraulic hoe of permeable grid type to fetch earth, grab the native process soil body extruding from lakebed and get rid of ponding in the scraper bowl automatically, grab bucket or the backhoe surperficial lake water of leaving the water is also got rid of automatically, soil body skim-coat is outer most of in grab bucket or the scraper bowl does not contact with lake water in the process of fetching earth, the lakebed soil body still keep the original soil block structure directly be discharged near hopper on; Promptly take out the earth material that keeps former soil structures from lakebed fast, thereby avoid producing a large amount of fine grogs, and produce pollution in wide area thus lake water towards filling out method construction waterpower cutting soil structure;
(3) utilize the channel excavation earthwork to form the cofferdam and platform is filled the zone be divided into zone more than two, drain ponding in the scope of cofferdam, change subaqueous construction into construction at dry land, can adopt general earth moving plant to push blading.Filling and leading up on the platform the pre-heap lakebed material that fetches earth, also form the platform that requires shape by general earth moving plant backfill navigation channel;
(4) adopt process method construction of the present invention, can realize getting from lakebed that clay forms at the lake water front can be rapidly solidified, fills the platform near water that can satisfy the stable and load bearing requirements of loke shore after the end.Newly filling and leading up platform does not need secondary to adopt fixed measures such as preloading or vacuum drainage, fill and lead up platform with fetching earth and compare and can reduce investment 30-50% from land, with inhale from lakebed mud again secondary consolidation compare, can reduce investment 200-300%.
Description of drawings
Fig. 1 is the present invention's layout schematic diagram of constructing;
Fig. 2 gets the clay process schematic representation for grid type hydraulic grab lakebed of the present invention;
Fig. 3 builds the breakwater process schematic representation for stone dumper of the present invention;
Fig. 4 builds the platform technology schematic diagram for backacter of the present invention unloads soil;
Fig. 5 is a bulldozer backfill of the present invention navigation channel process schematic representation.
Fig. 6 is example 2 construction layout schematic diagrames of the present invention.
Number in the figure is described as follows:
1 platform near water, 2 navigation channels, 3 borrow areas, 4 breakwater, 5 separate cofferdam, 6 permeable grid type hydraulic grabs, 7 hoppers, 8 stone dumpers, 9 stones are refuted, 10 hydraulic backhoes, 11 bulldozers, 12 pre-mound material.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is done to describe further by embodiment.
Embodiment 1:
Problems such as certain lake water front flood control standard along the lake deficiency in one of China five big fresh water lakes, loke shore avalanche are serious, soil erosion aggravation, the deterioration of the ecological environment along the lake are very outstanding, need badly to carry out water front along the lake and control flood and the restoration of the ecosystem engineering construction.In conjunction with urban flood defence of lake, shore and view requirement, need build forest against wave wash and view platform near water at water front along the lake.By the environmental protection pertinent regulations, can not fetch earth from land and fill in the lake platform near water, can only fetch earth from lakebed and fill.
Reconnoitre through large tracts of land geology, lakebed is a clay, there is not to find to be easy to fixed sand, adopt the conventional platform that mud is built of inhaling towards the embankment method from lakebed, for a long time can not be fixed, and consolidation techniques such as employing vacuum drainage shorten consolidation time, and cost is very expensive, still is difficult to satisfy flood control and the rapidly solidified requirement of view platform.Be difficult to fixed Analysis on Mechanism at routine towards filling out the method soil body, adopt the present invention to get the process that clay under lake fills the new platform near water that satisfies the stable and view platform load-bearing requirement of loke shore, in order to verify the reliability of process, choose the 963m water front as test section, carry out field trial research.Lake stage is generally 8.2-9.2m, 10 years one meet flood level is 11.6m, in conjunction with the hydrophilic and sloping stability requirement of loke shore, test section platform 1 leading edge crest level near water is 9.5m, loke shore pin place is 11.5m, reclamation district depth of water 1-2m, platform 1 width 70-100m (width is greater than 40 meters) fills earth volume 12.8 ten thousand m near water
3, see Fig. 1.
The excavation navigation channel
Fill side excavation navigation channel 2 near water, zone along platform 1 near water, navigation channel 2 be T shape navigation channel, and the zone is filled with platform 1 near water in the horizontal navigation channel in T shape navigation channel, and side is parallel near water, and the 3 connection formation circulation course lines, borrow area in the lake are stretched in the opposite side navigation channel; The navigation channel is suitable for reading to be not less than 2m apart from the levee toe distance, and the navigation channel bottom width is 8-12m, and wide 12-18m suitable for reading satisfies 1 barge discharging, another requirement of passing through, and fairway depth is not less than 2.5m; Utilize the channel excavation earthwork to fill near water the inboard same period and separate cofferdam 5 in the platform in the navigation channel;
Build breakwater
By 9 transportations of 250t barge, 8t lifting grab bucket is set on power ship 8, grasp building stones in the outside, navigation channel from barge 9, the platform leading edge is thrown to fill out and is formed breakwater 4 near water, breakwater 4 top width 1m (adjustable range is 0.5-2m), breakwater 4 crest levels are higher than ordinary water level 0.5m, and inside and outside side slope is 1: 1.5, and (inner slope gradient adjustable range is 1: 1.3-1.5), the inner slope side should add throws rubble and yellow ground 0.3-0.6m formation loaded filter, sees Fig. 3.
Lakebed fetches earth
Clay under lake 3 is got by being arranged on the 500t power ship permeable grid type hydraulic grab 6 from the borrow area by 800m place outside platform 1 leading edge near water, and grabbing bucket is 1.0m
3, the lakebed degree of depth that fetches earth is controlled at 1-3m, sees Fig. 2.
The earth material transportation
Clay under lake is transported near water through T shape navigation channel by the borrow area by hopper 7, and platform fills the zone;
Unload soil
Utilize the channel excavation earthwork to build to form and separate cofferdam 5, by 1m at the inboard heap
3Hydraulic backhoe 10 near water platform separate on the cofferdam 5 from the navigation channel in 2 muck haulage hoppers 7 and unload soil to platform near water nearby and fill the zone;
Push smooth earth material
The separation cofferdam is filled the zone with platform and is divided into the polylith zone, drains and separates ponding in the scope of cofferdam, is changed under the condition of nonirrigated farmland by subaqueous construction and transports blading; Bulldozer 11 pushes under the condition of nonirrigated farmland smoothly to be finished inboard platform and fills, and sees Fig. 4;
The backfill navigation channel
Pile in advance on the platform from clay under lake that lakebed is got 12 building, push the backfill platform by bulldozer 11 and fill the navigation channel 2 of transporting building stones and clay under lake in the zone, see Fig. 5, form the loke shore that meets design requirement forest against wave wash and platform near water near water.After platform filled and finishes near water, big machinery got final product walking freely, satisfied the stable load-bearing requirement that reaches the view platform of loke shore fully.
Embodiment 2:
Be arranged in embodiment 1 same lake water front and need build the souvenir square of crossing a river of stretching into the about 250m in lake, its basic platform 60,000 m
2, the amount of filling 400,000 m
3Also adopting this invented technology method to get clay under lake fills.It is very high that 1 pair of basic platform fills cubic metre of earth compaction requirement, separate cofferdam 5 utilize the channel excavation earthwork to fall nearby that soil fills in the water can't compaction in layers, separate cofferdam 5 and be arranged in platform with embodiment 1 and fill and be difficult to engineering demands in the zone.
Concrete construction layout plan is seen Fig. 6, excavation navigation channel 2, lakebed fetch earth, earth material transports, unload soil, push smooth earth material operation all with embodiment 1, to separate cofferdam 5, to be arranged in the platform reclamation district overseas, and separating cofferdam 5 side riprap protection near water, drain and separate ponding in the cofferdam 5, under the condition of nonirrigated farmland, the cool lakebed that shines fetches earth, platform 1 is filled in compaction in layers on request, side slope forms permanent protection, remove at last and separate 5 cubic metres of earth in cofferdam, and utilize the backfill platform to fill area peripheral edge navigation channel 2, finish and satisfy the platform near water of commemorating the square building requirements.
Claims (6)
1, get clay under lake and build the rapidly solidified method of platform technology near water, it is characterized in that comprising following operating procedure:
(1) the default zone of filling
The platform near water of the default line that anchors alongside the shore along the lake fills the zone;
(2), excavation navigation channel
Side excavation navigation channel near water, zone is filled on edge platform near water, and described navigation channel one end stretches into the borrow area in the lake; Utilize the channel excavation earthwork in the navigation channel the inboard same period fill near water and separate the cofferdam in the platform;
(3) build breakwater
In the navigation channel outside, platform leading edge near water, fill block stone throwing is filled out breakwater;
(4) lakebed fetches earth
Be not less than from the lake water front outside 300 meters distances, becoming piece to take clay under lake by the permeable grid type hydraulic grab that is provided with aboard ship;
(5) earth material transportation
Clay under lake is transported near water through T shape navigation channel by the borrow area by hopper, and platform fills the zone;
(6) unload soil
Hydraulic backhoe near water platform separate on the cofferdam and to unload soil to platform near water nearby from muck haulage hopper in the navigation channel and fill the zone;
(7) push smooth earth material
Separate the cofferdam and platform is filled the zone be divided into zone more than two, drain and separate ponding in the scope of cofferdam, change under the condition of nonirrigated farmland by subaqueous construction and transport blading; Repeating step (3), (4), (5), (6) are finished the inboard platform in separation cofferdam and are filled;
(8) backfill navigation channel
Fill and lead up pre-heap clay under lake that lakebed is got on the platform in the inboard, navigation channel, formed the platform near water that requires shape with clay under lake backfill navigation channel again;
Platform is the platform of the line that anchors alongside the shore along the lake near water, and width is a 10-300 rice, and the platform place depth of water is 1-3 rice near water, and its crest level is higher than ordinary water level and is not less than 0.5 meter.
2, the clay under lake of getting according to claim 1 is built the rapidly solidified method of platform technology near water, it is characterized in that: described navigation channel is T shape navigation channel, the zone is filled with platform near water in the horizontal navigation channel in T shape navigation channel, and side is parallel near water, and the borrow area that the lake is gone into is stretched in the opposite side navigation channel; Described navigation channel is suitable for reading to be not less than 2m apart from the levee toe distance, and the navigation channel bottom width is 8-12m, and wide 12-18m suitable for reading satisfies 1 barge discharging, another requirement of passing through, and fairway depth is not less than 2.5m.
3, the clay under lake of getting according to claim 1 and 2 is built the rapidly solidified method of platform technology near water, and it is characterized in that: described berm width is greater than 40 meters, and the navigation channel is arranged in platform and fills in the zone; Berm width required less than 40 meters or platform fill compaction degree high that the navigation channel is arranged in the platform reclamation district is overseas, drain and separate ponding in the cofferdam, build platform under the condition of nonirrigated farmland, remove separation backfilling of earthwork navigation channel, cofferdam at last.
4, the clay under lake of getting according to claim 1 is built the rapidly solidified method of platform technology near water, and it is characterized in that: described breakwater crest level is higher than ordinary water level 0.5m, top width 0.5-2m, and the outer gradient is 1: 1.5, the inner slope gradient is 1: 1.3-1.5.
5, the clay under lake of getting according to claim 1 is built the rapidly solidified method of platform technology near water, and it is characterized in that: the described degree of depth that takes clay under lake is a 1-3 rice.
6, the clay under lake of getting according to claim 1 is built the rapidly solidified method of platform technology near water, it is characterized in that: the interior separation of described platform cofferdam crest level is higher than ordinary water level and is not less than 0.5m, toe is the 1m that is not less than suitable for reading apart from the navigation channel, and side slope is the native gradient, the top width 6-10m of forming naturally in the water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810195553A CN100582382C (en) | 2008-10-17 | 2008-10-17 | Process for constructing quickly consolidated temperory horizontal platform by picking clay of lake bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810195553A CN100582382C (en) | 2008-10-17 | 2008-10-17 | Process for constructing quickly consolidated temperory horizontal platform by picking clay of lake bottom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101424082A CN101424082A (en) | 2009-05-06 |
| CN100582382C true CN100582382C (en) | 2010-01-20 |
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| CN200810195553A Expired - Fee Related CN100582382C (en) | 2008-10-17 | 2008-10-17 | Process for constructing quickly consolidated temperory horizontal platform by picking clay of lake bottom |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103397646B (en) * | 2013-08-19 | 2015-01-21 | 安徽省水利水电勘测设计院 | Technique for fast filling constructed wetland in shore area |
| CN113202157A (en) * | 2021-04-22 | 2021-08-03 | 陈伟 | Dredging head with separation function for hydraulic engineering and dredging method thereof |
| CN116739534A (en) * | 2023-08-14 | 2023-09-12 | 中交广州航道局有限公司 | Navigation channel construction management method and system based on BIM and Beidou high-precision positioning technology |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4266890A (en) * | 1978-12-04 | 1981-05-12 | The Reinforced Earth Company | Retaining wall and connector therefor |
-
2008
- 2008-10-17 CN CN200810195553A patent/CN100582382C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4266890A (en) * | 1978-12-04 | 1981-05-12 | The Reinforced Earth Company | Retaining wall and connector therefor |
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| CN101424082A (en) | 2009-05-06 |
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