CN106368238A - Honeycomb geocell earth retaining wall with ecological restoration function and construction method thereof - Google Patents
Honeycomb geocell earth retaining wall with ecological restoration function and construction method thereof Download PDFInfo
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- CN106368238A CN106368238A CN201610935810.5A CN201610935810A CN106368238A CN 106368238 A CN106368238 A CN 106368238A CN 201610935810 A CN201610935810 A CN 201610935810A CN 106368238 A CN106368238 A CN 106368238A
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- loess
- drain pipe
- polypropylene
- honeycomb
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0225—Retaining or protecting walls comprising retention means in the backfill
- E02D29/0241—Retaining or protecting walls comprising retention means in the backfill the retention means being reinforced earth elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Revetment (AREA)
Abstract
The invention provides a honeycomb geocell earth retaining wall with an ecological restoration function and a construction method thereof. The honeycomb geocell earth retaining wall comprises a foundation arranged on the ground and a wall body arranged on the foundation; the wall body comprises a reinforced bed course, a composite geo-membrane, reinforced polypropylene water storing and draining modules, a filament geotextile and honeycomb geocells, wherein the reinforced bed course, the composite geo-membrane, the reinforced polypropylene water storing and draining modules, the filament geotextile and the honeycomb geocells are sequentially arranged on the surface of a slope in a paving mode; the foundation and the reinforced bed course each comprise reinforced lime earth improving loess, polypropylene two-way geogrids and a drain pipe; the multiple polypropylene two-way geogrids are parallelly arranged in the reinforced lime earth improving loess; and the drain pipe in the reinforced bed course and the drain pipe in the foundation are connected with the reinforced polypropylene water storing and draining modules correspondingly. The provided honeycomb geocell earth retaining wall with the ecological restoration function is high in bearing capacity, dynamics performance, slide resistance and erosion resistance and can be filled with a gravel soil layer, grass is planted in the gravel soil layer, not only can water and soil erosion be effectively prevented, but also a greening function is achieved, and accordingly, effective combination of ecological restoration and engineering management is achieved; and the construction method is simple, construction is convenient, and the cost is low.
Description
Technical field
The invention belongs to Geological Engineering construction technique field, it is related to a kind of honeycomb geotechnical grid with ecological recovery function
Retaining wall, the invention still further relates to the construction method of this retaining wall.
Background technology
Retaining wall, as one of Treatment process in ground support engineering, is widely used in a gear such as side slope, embankment, dam
Engineering.Traditional retaining wall adopts mortar flag stone, concrete etc. mostly as the construction material of retaining wall, due to these material stiffnesses
Greatly, and tension, shearing strength and tensile atrain are relatively low, therefore, using often there is the damaged phenomenon of retaining wall after a period of time, and
Once there is breakage in retaining wall, because of its globality, compared with leading to by force, reparation difficulty is big, and rehabilitation cost is high, and later maintenance work is numerous
Trivial.Simultaneously as traditional retaining wall construction is complicated, required workmen is more, and freight is relatively high etc., and reason leads to
Its cost is high, therefore makes slope treatment work be difficult to extensively carry out.Furthermore, traditional retaining wall retaining structure, ignore life more
The environmental protection greening function that state is recovered, especially in the Northwest due to drought, rainwater is poor, and vegetation survival rate is relatively low to be led
Cause shortage of water resources, cause this area to be difficult to the greening vegetation of the retaining structures such as embankment, side slope is timed and regularly spray,
Thus the demand being difficult to environmental protection, beautifying the environment.For traditional retaining wall cracky, construction is complicated, relatively costly
Problem and the poor phenomenon of the Northwest's rainwater, how economical rationality meeting the construction of the retaining engineerings such as slope, embankment, dam
On the basis of, reach the demand of environmental protection, beautiful environment, become those skilled in the art's problem demanding prompt solution.Based on this,
The present invention is special to propose a kind of honeycomb geotechnical grid retaining wall with ecological recovery function.
In the present invention, the gradient refers to the ratio of domatic vertical height and domatic horizontal range.Ratio of slope refers to domatic vertical height
Degree and the ratio of domatic horizontal range.The compacting factor dry density through actually reaching for the base that shows the way obtains with by hit-solid experiment
The maximum dry density of sample ratio.The ratio of the dry density after compactness finger pressure reality and standard maximum dry density.
Content of the invention
It is an object of the invention to provide a kind of honeycomb geotechnical grid retaining wall with ecological recovery function, solve tradition
Complicated, the relatively costly problem of retaining wall cracky, construction.
Second object of the present invention is to provide the construction method of above-mentioned retaining wall.
The technical scheme is that a kind of honeycomb geotechnical grid retaining wall with ecological recovery function, including setting
Basis on the ground, and the body of wall on the basis of being arranged on, are separated by the first composite geo-membrane between basis and body of wall, wall
Reinforcement cushion that body includes being laid on domatic successively, the second composite geo-membrane, RPP drainage module, long filament geotechnique
Cloth and honeycomb geotechnical grid；Basis includes dirt and improves loess and the two-way soil of the first polypropylene being arranged in dirt improvement loess
Work grid, the first drain pipe, the first drain pipe is connected with RPP drainage module；Reinforcement cushion includes dirt improvement
Loess and be arranged on dirt improve loess in the second polypropylene direction earthwork grille, the second drain pipe, the second drain pipe also with
RPP drainage module is connected.
Preferably, the side-lower of above-mentioned body of wall is provided with gutter, and above-mentioned first drain pipe is built in basic internal upper part, and first
Drain pipe with the ratio of slope not less than 4 ‰ along downward-sloping away from domatic direction, the upper end of the first drain pipe and RPP
Drainage module connects, lower end and gutter are connected.
Preferably, above-mentioned honeycomb geotechnical grid is the three-dimensional netted compartment welded and formed by high-strength polyethylene material,
Gravelly soil is filled, gravelly soil is provided with by planting the vegetable layer that flowers and plants are formed in honeycomb geotechnical grid.
Preferably, above-mentioned long filament geotextiles are the three dimensional structures being become net and consolidated by PFY.
Preferably, above-mentioned RPP drainage module be by regenerated environment protecting high-strength polypropylene material make netted
Structure, bottom is three-dimensional composite drainage network；This RPP drainage module is multiple and is assembled into case to be layed in second multiple
Close on geotechnological lattice film.
Preferably, above-mentioned dirt improves the compacting factor of loess more than or equal to 0.95；The two-way soil of above-mentioned first polypropylene
Work grid and the second polypropylene direction earthwork grille are multiple and level and are layed in dirt improvement loess, and adjacent first gathers
The distance between propylene direction earthwork grille is 0.2m, and the distance between second adjacent polypropylene direction earthwork grille is also
0.2m
Preferably, above-mentioned second drain pipe is multiple and is dipped down away from domatic direction with the ratio of slope edge not less than 4 ‰
Tiltedly arrange, the distance between second adjacent drain pipe is 0.5m, one end of the second drain pipe and RPP drainage mould
Block connects, other end insertion is domatic interior.
Second technical scheme of the present invention be, the structure of the above-mentioned honeycomb geotechnical grid retaining wall with ecological recovery function
Building method, comprises the steps:
Prepare and slope leveling before step 1, construction；
Step 2, excavate domatic and foundation ditch, the domatic excavation gradient is less than or equal to 1:0.275, to domatic carrying out after excavating
Finishing, carries out leveling compacting to bottom of foundation ditch loess after excavation of foundation pit, compacting factor is more than or equal to 0.93；
Step 3, basic constructing:
1) loess and dirt are added water than through mixer according to the weight of 7:3 and carry out mix formation dirt improvement loess, make
The yellow soil's water content of dirt improvement, after this ground loess optimum moisture content, is transported at construction, carries out filling, compacting operation；Often
The dirt improvement loess filling out 20cm-25cm thickness is tamped to the compactness not less than 95%；Every 0.2 in dirt improvement loess
Rice laying the first polypropylene direction earthwork grille；Lay the first drain pipe, the first drain pipe upper end in dirt improvement loess top
By connecting with the RPP drainage module in body of wall, lower end will be connected with gutter, and the first drain pipe is with not less than 4 ‰
Ratio of slope along downward-sloping away from domatic direction；
2) from fabric width be more than 1m the first composite geo-membrane be laid in dirt improvement loess above, joint adopt gluing,
Flatten between first composite geo-membrane and between the first composite geo-membrane and base surface and be adjacent to, the first composite geo-membrane is tied with periphery
Expansion bolt and steel plate press strip anchor connection, connecting portion brushing emulsified asphalt bonding is adopted between structure thing；
Step 4, the constructing of body of wall:
1) the building by laying bricks or stones of reinforcement cushion: loess and dirt are added water than through mixer according to the weight of 7:3 to carry out mix and formed
Dirt improves loess, is transported at construction, according to slope masonry, compacting；Lay second poly- third every 0.2 meter in dirt improvement loess
Alkene direction earthwork grille；Build the gradient by laying bricks or stones and be not less than 1:0.275；Often fill out 10cm thickness to tamp to the compactness not less than 95%；Ash
Setting the second drain pipe is repaiied every 0.5m, the second drain pipe is with the ratio of slope not less than 4 along away from domatic in the good loess of land reform
Direction is downward-sloping；One end of second drain pipe is contacted with domatic, the other end by with body of wall in RPP drainage mould
Block connects；
2) laying of the second composite geo-membrane: the second composite geo-membrane is laid on reinforcement cushion, the second composite earthwork
Film web is wider than 1m, joint adopt gluing, the second composite earthwork is intermembranous and the second composite geo-membrane and reinforcement cushion between flatten
It is adjacent to, the second composite geo-membrane and peripheral structure thing adopt expansion bolt and steel plate press strip anchor connection, connecting portion brushing breast
Change Colophonium bonding；
3) polypropylene drainage module laying: polypropylene drainage module scene is spliced, is assembled into case, is layed in
On second combined earthwork partition film, and connect with the second drain pipe in the first drain pipe and reinforcement cushion in basis；
4) laying of long filament geotextiles: directly long filament geotextiles are laid in polypropylene by the way of artificial rolling paving and store row
In water module, cloth cover is smooth, and suitably leaves distortion allowance, welding, long filament geotextiles and peripheral structure between long filament geotextiles
Thing adopts expansion bolt and steel plate press strip anchor connection, connecting portion brushing emulsified asphalt bonding；
5) the building by laying bricks or stones of honeycomb geotechnical grid: honeycomb geotechnical grid is deployed in long filament geotextiles, stretches smooth-going, under being close to
Hold layer filament geotextiles to pave, and be directly fixed in reinforcement cushion with reinforcing bar nail is vertically domatic, honeycomb geotechnique Ge Nei fills broken
Stone soil, and tamp to the compactness not less than 95%, in gravelly soil, plantation flowers and plants form vegetable layer；
Step 5, the building by laying bricks or stones of gutter 9.
Preferably, above-mentioned first composite geo-membrane and the second composite geo-membrane are high-density polyethylene material, thickness
1.25mm.
Preferably, above-mentioned first polypropylene direction earthwork grille and the second polypropylene direction earthwork grille are all with high intensity
Reinforced earth is made, every linear meter(lin.m.) tensile yield power: longitudinal 45kn/m, horizontal 45kn/m；Every linear meter(lin.m.) yield elongation rate: longitudinally
16%, horizontal 13%.
The present invention has following beneficial aspects:
1st, the present invention provide the honeycomb geotechnical grid retaining wall with ecological recovery function, body of wall outside in successively by
Honeycomb geotechnical grid, long filament geotextiles, RPP drainage module, composite geo-membrane, reinforcement cushion build, and basis is for adding
Muscle dirt improves loess, and reinforcement material is polypropylene direction earthwork grille, and basic internal builds polypropylene drain pipe, on drain pipe
End connect with RPP drainage module, lower end is connected with the gutter being arranged at body of wall underfooting, basis and retaining wall it
Between be separated by with composite geo-membrane, can effectively prevent in upper wall body unnecessary rain infiltration to infrastructure.
2nd, the honeycomb geotechnical grid retaining wall with ecological recovery function that the present invention provides, with high-strength polyethylene material
, as retaining structure, bearing capacity and dynamic performance are higher for honeycomb geotechnical grid, and antiskid, erosion resistance are strong, and its honeycomb fashion
Construct and there is good drainage performance, fill in honeycomb geotechnical grid be suitable for improvement gravelly soil constitute have powerful lateral limitation and
The structure of big stiffness, and plant flowers and plants in gravelly soil, can not only prevent erosion, and there is the work beautified the environment
With.
3rd, the honeycomb geotechnical grid retaining wall with ecological recovery function that the present invention provides, basis is two-way using polypropylene
Fill Reinforced With Geogrids dirt improves loess formation, with long filament geotextiles as filter layer between basis and body of wall, has good water
Power condition and anti-filter condition, with the RPP drainage module collective effect in body of wall, effectively can play water storage function, have
Effect storage rainwater, provides for the plant on body of wall and irrigates resource, reach the comprehensive utilization of rainwater；When rainwater storage exceedes accumulation
When, RPP drainage module forms internal drainage channel with the composite geo-membrane with good barrier effect, by flat
Superfluous water rainwater is excluded by the mode of face draining, thus reaching the effect controlling rainwater yielding flow.
4th, the honeycomb geotechnical grid retaining wall with ecological recovery function that the present invention provides, reinforcement cushion adopts polypropylene
Direction earthwork grille, as reinforcement material, improves shearing resistance, the comprcssive strength of bed course.
5th, the honeycomb geotechnical grid retaining wall construction method with ecological recovery function that the present invention provides, convenient to carry out,
Speed of application is fast, and cost is relatively low, and cost-saved 50%, meanwhile, the plant on its body of wall and drainage module build tool jointly
There is the slope protection system of ecological functions it is achieved that the comprehensive utilization of rainwater, eliminating the impact to retaining wall for the precipitation, thus reaching life
State recovers the effective combination with engineering control.
Brief description
Fig. 1 is the honeycomb geotechnical grid retaining wall schematic diagram with ecological recovery function provided in an embodiment of the present invention.
In figure: 1. honeycomb geotechnical grid, 2. long filament geotextiles, 3. RPP drainage module, 4-1. first is combined
Geomembrane, 4-2. second composite geo-membrane, 5. reinforcement cushion, 6-1. the first polypropylene direction earthwork grille, 6-2. second poly- third
Alkene direction earthwork grille, 7-1. first drain pipe, 7-2. second drain pipe, 8. basis, 9. gutter.
Specific embodiment
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described in further detail.
Embodiment
A kind of honeycomb geotechnical grid retaining wall with ecological recovery function, referring to Fig. 1, including setting base on the ground
Plinth 8 and the body of wall being arranged on basis 8, are separated by the first composite geo-membrane 4-1 between basis 8 and body of wall, and body of wall includes adding
Muscle bed course 5, the second composite geo-membrane 4-2, RPP drainage module 3, long filament geotextiles 2 and honeycomb geotechnical grid 1 and
It is successively set on domatic；It is two-way with the first polypropylene being arranged in dirt improvement loess that basis 8 includes dirt improvement loess
GSZ 6, the first drain pipe 7-1, the first drain pipe 7-1 is connected with RPP drainage module 3；Reinforcement cushion 5
Improve loess and the second polypropylene direction earthwork grille 6-2 being arranged in dirt improvement loess and the second drain pipe including dirt
7-2, the second drain pipe 7-2 are also connected with RPP drainage module 3.
For the ease of draining, the side-lower of body of wall is provided with gutter 9, and the first drain pipe 7-1 in basis 8 builds in basis
8 tops, a diameter of 20cm of the first drain pipe 7-1, the upper end of the first drain pipe 7-1 connected with RPP drainage module 3,
Lower end is connected with gutter 9, and the first drain pipe 7-1 is downward-sloping away from domatic direction with the ratio of slope edge not less than 4 ‰.
In order to prevent erosion and beautify the environment, in above-mentioned body of wall, fill gravelly soil, on gravelly soil, plantation flowers and plants are formed
Vegetable layer.
In order to ensure the bearing capacity of retaining wall, improve antiskid, erosion resistance, the height of honeycomb geotechnical grid 1 is 20cm,
Honeycomb geotechnical grid 1 is the three-dimensional netted compartment being formed by the welding of hexagon high-strength polyethylene material, and its tensile strength is big
In or be equal to 150mpa.
Long filament geotextiles 2 are to become net the three dimensional structure consolidating by PFY, and this long filament geotextiles 2 has well
Hydraulics and anti-consider condition.
RPP drainage module 3 is the network structure being made up of 100% regenerated environment protecting high-strength polypropylene material,
It is highly 20cm, including three layers, bottom is three-dimensional composite drainage network.This RPP drainage module 3 is multiple, Duo Gezeng
Strong polypropylene drainage module 3 is assembled into case and is layed on the second combined earthwork partition film 4-2, is internally formed in body of wall and has well
Superfluous water rainwater is discharged by way of flat drainage by the drainage channel of antiseepage effect, thus reaching control rainwater total runoff
The effect of amount.
In order to improve shearing resistance, the comprcssive strength of bed course, the compacting factor of the good loess of the mellow lime land reform of reinforcement cushion 5 is more than or waits
In 0.95；Polypropylene direction earthwork grille 6 in reinforcement cushion 5 is multiple and level laying, adjacent polypropylene two-way geotechnique lattice
The distance between grid 6 are 0.2m.
In order to effectively prevent the rain infiltration on body of wall to base component, above-mentioned first composite geo-membrane 4-1 and second is multiple
Conjunction geomembrane 4-2 is high-density polyethylene material, thickness 1.25mm.
In order to improve drainage efficiency, the second drain pipe 7-2 in reinforcement cushion 5 is multiple and with the ratio of slope not less than 4 ‰
Along away from the domatic downward-sloping setting in direction, the distance between second adjacent drain pipe 7-2 is 0.5m, the second drain pipe 7-
2 one end is connected with RPP drainage module 3, other end insertion is domatic interior；The a diameter of 100mm of second drain pipe 7-2.
Dirt improvement loess includes dirt and loess, and the weight of dirt and loess ratio is for 3:7.Find through experiment, this ash
The water sensitivity of the good loess of land reform is very low, reduces by 60% than the water sensitivity of loess, simultaneously as dirt has certain water stability
And gel strength, therefore alleviate lateral deformation under sound load action for the reinforcement cushion, and it is simple to construct, cheap.
In order to improve shearing resistance, the comprcssive strength of retaining wall further, polypropylene direction earthwork grille 6 is to be former with polypropylene
The high intensity reinforced earth of material is made, every linear meter(lin.m.) tensile yield power: longitudinal 45kn/m, horizontal 45kn/m；Every linear meter(lin.m.) elongation at yield
Rate: longitudinal 16%, horizontal 13%.
The construction method of the above-mentioned honeycomb geotechnical grid retaining wall with ecological recovery function, comprises the steps:
Prepare and slope leveling before step 1, construction；
Step 2, excavate domatic and foundation ditch, the domatic excavation gradient is less than or equal to 1:0.275, to domatic carrying out after excavating
Finishing, carries out leveling compacting to bottom of foundation ditch loess after excavation of foundation pit, compacting factor is more than or equal to 0.93, after compacting finishes,
Carry out an acceptance inspection, non-compliant substrate is processed；
Step 3, basis 8 construct:
(1) loess and dirt are added water than through mixer according to the weight of 7:3 and carry out mix formation dirt improvement loess, make
Its moisture content, after this ground loess optimum moisture content, is transported at construction, carries out filling, compacting operation；Often fill out 20cm-25cm thick
Degree compacting is to the compactness not less than 95%；Every the two-way soil of one layer of first polypropylene of 0.2 meter of laying in dirt improvement loess
Work grid 6-1；Improve the first drain pipe 7-1 that polypropylene material is laid on loess top in dirt, the first drain pipe 7-1 upper end will
Connect with RPP drainage module 3, lower end will be connected with gutter 9, the first drain pipe 7-1 is with the slope not less than 4 ‰
Rate；After compacting finishes, carry out an acceptance inspection, non-compliant substrate is processed；
(2) the first composite geo-membrane 4-1 is directly laid in above dirt improvement loess, is more than the first of 1m from fabric width
Composite geo-membrane 4-1, to reduce joint materials.Joint adopts gluing, seam width 50mm.Between first composite geo-membrane 4-1 and
To flatten between first composite geo-membrane 4-1 and basic 8 faces and be adjacent to, but the first composite geo-membrane 4-1 should not be tightened too much, no
Bubble can be left at the first composite geo-membrane 4-1 bottom.Ensure that the first composite geo-membrane 4-1 can not be damaged.First composite earthwork
Film 4-1 adopts expansion bolt and steel plate press strip anchor connection with peripheral structure thing, and connecting portion will brush the emulsified asphalt of thick 2mm
, in case there is seepage at this in bonding；
Step 4, the constructing of body of wall:
(1) the building by laying bricks or stones of reinforcement cushion 5: loess and dirt are carried out mix shape according to the weight of 7:3 than adding water through mixer
Become dirt improvement loess, make the formation dirt after mix improve loess rate after this ground loess optimum moisture content, be transported to
At construction, according to slope masonry, compacting；Every one layer of second polypropylene of 0.2 meter of laying two-way geotechnique lattice in dirt improvement loess
Grid 6-2；Build the gradient by laying bricks or stones and be not less than 1:0.275；Often fill out 10cm thickness to tamp to the compactness not less than 95%；Dirt improves loess
Interior every 0.5m build polypropylene material the second drain pipe 7-2, and with body of wall in RPP drainage module 3 phase
Connect；The a diameter of 100mm of second drain pipe 7-2, the second drain pipe 7-2 with not less than 4 ‰ ratio of slope along away from domatic direction to
Lower inclination；After compacting finishes, carry out an acceptance inspection, non-compliant reinforcement cushion is processed；
The laying of (2) second composite geo-membrane 4-2: the second composite geo-membrane 4-2 is directly laid on reinforcement cushion 5,
Select fabric width to be more than 1m, to reduce joint materials as far as possible.Joint adopts gluing, seam width 50mm.Between the second composite geo-membrane 4-2
And second will flatten between composite geo-membrane 4-2 and reinforcement cushion 5 and be adjacent to, but reinforcement cushion 5 should not be tightened too much it is impossible to
Bubble is left at reinforcement cushion 5 bottom.Reinforcement cushion 5 to be ensured can not be damaged.Second composite geo-membrane 4-2 is adopted with peripheral structure thing
Expansion bolt and steel plate press strip anchor connection, connecting portion will brush the emulsified asphalt bonding of thick 2mm, in case oozing at this
Leakage；
(3) polypropylene drainage module 3 is laid: polypropylene drainage module 3 scene is carried out module splicing, is assembled into case
After be layed on the second combined earthwork partition film 4-2, and with basis 8 in the first drain pipe 7-1 and reinforcement cushion 5 in second row
Water pipe 7-2 connects；
(4) laying of long filament geotextiles 2: directly long filament geotextiles 2 are laid in polypropylene by the way of artificial rolling paving
In drainage module 3, cloth cover is smooth, and suitably leaves distortion allowance, the method installed using welding of long filament geotextiles 2.
The width of welding is generally more than 0.1m, and long filament geotextiles 2 and peripheral structure thing adopt expansion bolt and the anchoring of steel plate press strip even
Connect, connecting portion will brush the emulsified asphalt bonding of thick 2mm, in case there is seepage at this；
(5) the building by laying bricks or stones of honeycomb geotechnical grid 1: honeycomb geotechnical grid 1 is deployed in long filament geotextiles 2, stretches smooth-going, tightly
Patch sub-layer long filament geotextiles 2 are paved it is ensured that load is in good stress after applying；And followed closely with a diameter of φ 8u steel bar
Vertically domatic be directly fixed in reinforcement cushion 5, steel nail is 1m along domatic spacing and level interval.Inside honeycomb geotechnique's lattice 1
Placement in layers gravelly soil, and tamp to the compactness not less than 95%, and plantation flowers and plants form vegetable layer in gravelly soil；
Step 5, the building by laying bricks or stones of gutter 9: construct gutter below body of wall, gutter 9 section is rectangle it is adaptable to side
Intercept water in slope top, gutter 9 bottom initial depth is 50cm, wide 40cm, and current are pressed with the ratio of slope not less than 0.5% in gutter 9 bottom
Direction drawdown.For preventing from seeping water, lay the thick dirt improvement loess of 15cm as bed course at gutter 9 bottom, grouted using m10
Mu30 slabstone is built by laying bricks or stones, and formation coating is all smeared with m10 mortar in gutter 9 inner bottom surface and side, and coating layer thickness is 20mm, and should set
Put expansion joint.
The honeycomb geotechnical grid retaining wall with ecological recovery function that the present invention provides, successively by high-strength polyethylene material
Material honeycomb geotechnical grid, long filament geotextiles, RPP drainage module, composite geo-membrane, reinforcement cushion build, bottom base
Plinth for reinforcement dirt improve loess, reinforcement material be polypropylene direction earthwork grille, basis in build polypropylene drain pipe and on
End is connected with RPP drainage module, and lower end connects with the gutter in body of wall corner, with compound between basis and body of wall
Geomembrane is separated by, in case top rain infiltration is to infrastructure.The high-strength polyethylene material honeycomb geotechnical grid conduct on top
Retaining wall retaining structure, bearing capacity and dynamic performance are higher, and antiskid, erosion resistance are strong, can fill and be suitable for improvement inside it
Gravelly soil composition has powerful lateral limitation and the structure of big stiffness, and plantation vegetation prevents erosion simultaneously in gravelly soil
There is the effect of beautifying the environment, its honeycomb structure has good drainage performance；Long filament geotextiles have well as filter layer
Hydraulics and anti-filter condition, and RPP drainage module collective effect, play water storage function, effectively store rain
Water, provides for top vegetable layer and irrigates resource, reach the comprehensive utilization of rainwater；When rainwater storage exceedes accumulation, strengthen poly-
Propylene drainage module forms internal drainage channel with the composite geo-membrane with good barrier effect, by the side of flat drainage
Superfluous water rainwater is excluded by formula, thus reaching the effect controlling rainwater yielding flow；Reinforcement cushion adopts the two-way geotechnique of polypropylene
Grid, as reinforcement material, improves back shearing resistance, the comprcssive strength of bed course.This honeycomb geotechnical grid retaining wall with inside fill broken
Stone soil composition has powerful lateral limitation and the structure of big stiffness, compares traditional mortar flag stone retaining wall, retaining wall of the present invention
Easy to connect, speed of application is fast, and cost is relatively low, and cost-saved 50%, meanwhile, vegetable layer and bottom drainage module inside it
Common structure has the slope protection system of ecological functions, has the effect beautified the environment, and achieves the effect of the comprehensive utilization of rainwater
Really, eliminate the impact to retaining wall for the precipitation, thus reaching effective combination of ecological recovery and engineering control.
Claims (10)
1. a kind of honeycomb geotechnical grid retaining wall with ecological recovery function it is characterised in that: include setting on the ground
Basic (8), and it is arranged on the body of wall on basic (8), described basis (8) passes through the first composite geo-membrane (4- and body of wall between
1) separate, reinforcement cushion (5) that described body of wall includes being laid on domatic successively, the second composite geo-membrane (4-2), strengthen poly- third
Alkene drainage module (3), long filament geotextiles (2) and honeycomb geotechnical grid (1)；Described basis (8) include dirt improvement loess and
It is arranged on the first polypropylene direction earthwork grille (6-1), the first drain pipe (7-1) that described dirt is improved in loess, described the
One drain pipe (7-1) is connected with RPP drainage module (3)；Described reinforcement cushion (5) includes dirt improvement loess
Improve the second polypropylene direction earthwork grille (6-2) in loess, the second drain pipe (7-2) with being arranged on described dirt, described
Second drain pipe (7-2) is also connected with RPP drainage module (3).
2. there is the honeycomb geotechnical grid retaining wall of ecological recovery function as claimed in claim 1 it is characterised in that: described wall
The side-lower of body is provided with gutter (9), and described first drain pipe (7-1) is built in basic (8) internal upper part, described first drain pipe
(7-1) downward-sloping away from domatic direction with the ratio of slope edge not less than 4 ‰, the upper end of the first drain pipe (7-1) is gathered with strengthening
Propylene drainage module (3) connects, lower end and gutter (9) are connected.
3. there is the honeycomb geotechnical grid retaining wall of ecological recovery function as claimed in claim 1 it is characterised in that: described honeybee
Nest geotechnical grid (1) is the three-dimensional netted compartment welded and formed by high-strength polyethylene material, described honeycomb geotechnical grid (1)
The interior gravelly soil for filling, described gravelly soil is provided with by planting the vegetable layer that flowers and plants are formed.
4. there is the honeycomb geotechnical grid retaining wall of ecological recovery function as claimed in claim 1 it is characterised in that: described length
Silk geotextiles (2) is to become net the three dimensional structure consolidating by PFY.
5. there is the honeycomb geotechnical grid retaining wall of ecological recovery function as claimed in claim 1 it is characterised in that: described increasing
Strong polypropylene drainage module (3) is the network structure being made up of regenerated environment protecting high-strength polypropylene material, and bottom is three-dimensional multiple
Close drainage network；Described RPP drainage module (3) is multiple and is assembled into case and is layed in the second combined earthwork partition film (4-
2) on.
6. there is the honeycomb geotechnical grid retaining wall of ecological recovery function as claimed in claim 1 it is characterised in that: described ash
The compacting factor of the good loess of land reform is more than or equal to 0.95；Described first polypropylene direction earthwork grille (6-1) and second poly- third
Alkene direction earthwork grille (6-2) is multiple and level and is layed in dirt improvement loess, the adjacent two-way soil of the first polypropylene
The distance between work grid (6-1) is 0.2m, and the distance between second adjacent polypropylene direction earthwork grille (6-2) is also
0.2m.
7. there is the honeycomb geotechnical grid retaining wall of ecological recovery function as claimed in claim 1 it is characterised in that: described
Two drain pipies (7-2) are multiple and with the ratio of slope not less than 4 ‰ along away from the domatic downward-sloping setting in direction, adjacent described the
The distance between two drain pipies (7-2) are 0.5m, one end of described second drain pipe (7-2) and RPP drainage module
(3) connect, other end insertion is domatic interior.
8. the side of constructing of the honeycomb geotechnical grid retaining wall with ecological recovery function as described in any one of claim 1-7
Method is it is characterised in that comprise the steps:
Prepare and slope leveling before step 1, construction；
Step 2, the excavation of domatic and foundation ditch: the domatic excavation gradient is less than or equal to 1:0.275, repair to domatic after excavating
Whole, after excavation of foundation pit, bottom of foundation ditch loess is carried out with leveling compacting, compacting factor is more than or equal to 0.93；
Step 3, the constructing of basic (8), including
1) loess and dirt are added water than through mixer according to the weight of 7:3 and carry out mix formation dirt improvement loess, make dirt
The yellow soil's water content of improvement, after this ground loess optimum moisture content, is transported at construction, carries out filling, compacting operation；Often fill out
The dirt improvement loess of 20cm-25cm thickness is tamped to the compactness not less than 95%；Every 0.2 meter in dirt improvement loess
Lay the first polypropylene direction earthwork grille (6-1), lay the first drain pipe (7-1), first row in dirt improvement loess top
Water pipe (7-1) upper end is by connecting with RPP drainage module (3) in body of wall, lower end will be connected with gutter (9), and
One drain pipe (7-1) is downward-sloping away from domatic direction with the ratio of slope edge not less than 4 ‰；
2) select fabric width be more than 1m the first composite geo-membrane (4-1) be laid in dirt improvement loess above, joint adopt gluing,
Flatten between first composite geo-membrane (4-1) and between the first composite geo-membrane (4-1) and basic (8) and be adjacent to, the first composite earth
Expansion bolt and steel plate press strip anchor connection, connecting portion brushing emulsified asphalt is adopted between work film (4-1) and peripheral structure thing
Bonding；
Step 4, the constructing of body of wall, including
1) the building by laying bricks or stones of reinforcement cushion (5): loess and dirt are added water than through mixer according to the weight of 7:3 to carry out mix and form ash
The good loess of land reform, is transported at construction, according to slope masonry, compacting；Lay the second polypropylene every 0.2 meter in dirt improvement loess
Direction earthwork grille (6-2), builds the gradient by laying bricks or stones and is not less than 1:0.275；The dirt improvement loess often filling out 10cm thickness is tamped to not little
In 95% compactness；In dirt improvement loess, the second drain pipe (7-2) is set every 0.5m, the second drain pipe (7-2) is not with
Ratio of slope edge less than 4 is downward-sloping away from domatic direction；One end of second drain pipe (7-2) is contacted with domatic, the other end
To connect with RPP drainage module (3) in body of wall；
2) laying of the second composite geo-membrane (4-2): the second composite geo-membrane (4-2) is directly laid on reinforcement cushion (5),
The fabric width of the second composite geo-membrane (4-2) is more than 1m, joint adopt gluing, between the second composite geo-membrane (4-2) and second multiple
Close will flatten between geomembrane (4-2) and reinforcement cushion (5) and be adjacent to, the second composite geo-membrane (4-2) is adopted with peripheral structure thing
Expansion bolt and steel plate press strip anchor connection, connecting portion brushing emulsified asphalt bonding；
3) polypropylene drainage module (3) laying: polypropylene drainage module (3) scene is spliced, is assembled into case, laying
On the second combined earthwork partition film (4-2), and with basic (8) in the first drain pipe (7-1) and reinforcement cushion (5) in second
Drain pipe (7-2) connects；
4) laying of long filament geotextiles (2): by the way of artificial rolling paving, long filament geotextiles (2) are laid in polypropylene drainage
In module (3), cloth cover is smooth, and suitably leaves distortion allowance, welding between long filament geotextiles (2), long filament geotextiles (2) and week
Side works adopt expansion bolt and steel plate press strip anchor connection, connecting portion brushing emulsified asphalt bonding；
5) the building by laying bricks or stones of honeycomb geotechnical grid (1): honeycomb geotechnical grid (1) is deployed in long filament geotextiles (2), stretches smooth-going,
It is close to sub-layer long filament geotextiles (2) to pave, and be fixed in reinforcement cushion (5) with reinforcing bar nail is vertically domatic, honeycomb geotechnique's lattice
Fill gravelly soil in room (1), and tamp to the compactness not less than 95%, plantation flowers and plants form vegetable layer in gravelly soil；
Step 5, the building by laying bricks or stones of gutter 9.
9. there is the construction method of the honeycomb geotechnical grid retaining wall of ecological recovery function, its feature as claimed in claim 8
It is, described first composite geo-membrane (4-1) and the second composite geo-membrane (4-2) are high-density polyethylene material, thickness
1.25mm.
10. there is the construction method of the honeycomb geotechnical grid retaining wall of ecological recovery function, its feature as claimed in claim 8
It is, described first polypropylene direction earthwork grille (6-1) and the second polypropylene direction earthwork grille (6-2) are all to use high intensity
Reinforced earth is made, every linear meter(lin.m.) tensile yield power: longitudinal 45kn/m, horizontal 45kn/m；Every linear meter(lin.m.) yield elongation rate: longitudinally
16%, horizontal 13%.
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| CN109763502A (en) * | 2019-01-25 | 2019-05-17 | 西北大学 | A kind of environmentally protective comprehensive processing method of high steep Loess Landslide |
| CN111472371A (en) * | 2020-04-27 | 2020-07-31 | 长沙理工大学 | Comprehensive ecological prevention and control structure and method for easily weathered soft rock high and steep slope |
| CN113216246A (en) * | 2021-04-21 | 2021-08-06 | 中国电建集团华东勘测设计研究院有限公司 | Water-immersed retaining wall and construction method thereof |
| CN113279416A (en) * | 2021-04-23 | 2021-08-20 | 游永华 | Highway side slope reinforcing apparatus |
| US11124940B1 (en) * | 2020-03-23 | 2021-09-21 | Propex Operating Company, Llc | Braced synthetic mattress system for erosion control |
| CN113431062A (en) * | 2021-07-14 | 2021-09-24 | 中化地质矿山总局地质研究院 | Slope restoration ecological buffer belt structure and construction method thereof |
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