CN106193062A - Loess high roadbed and construction method thereof in ditch engineering are filled out in a kind of mountain of moving - Google Patents
Loess high roadbed and construction method thereof in ditch engineering are filled out in a kind of mountain of moving Download PDFInfo
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- CN106193062A CN106193062A CN201610693434.3A CN201610693434A CN106193062A CN 106193062 A CN106193062 A CN 106193062A CN 201610693434 A CN201610693434 A CN 201610693434A CN 106193062 A CN106193062 A CN 106193062A
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- loess
- layer
- lime
- high roadbed
- composite
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Classifications
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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
- E02D17/18—Making embankments, e.g. dikes, dams
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0051—Including fibers
- E02D2300/0053—Including fibers made from glass
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0084—Geogrids
Abstract
The invention discloses a kind of mountain of moving and fill out loess high roadbed and construction method thereof in ditch engineering, relate to high roadbed processing technology field, in order to solve in prior art owing to high embankment causes saturated yielding to ultimately result in the differential settlement of ground and the problem of slope deformation destruction.Moving mountain and fill out loess high roadbed in ditch engineering, high roadbed is made up of Composite Foundation with Lime Flyash Piles layer, rubble drainage blanket and loess formation the most successively.In the present invention, shifting mountain is filled out loess high roadbed and construction method thereof in ditch engineering and is improve resistance to compression, tension and the shearing strength that loess high roadbed is overall, and enhance antidetonation and the resistance to shock of high roadbed body, combine by laying composite geo-membrane, metalling and three-dimensional composite drainage network, constitute the internal drainage channel of high roadbed body, effectively solve owing to high embankment causes saturated yielding to ultimately result in the phenomenon of uneven settlement of foundation and slope deformation destruction.
Description
Technical field
The present invention relates to high roadbed processing technology field, more particularly relate to a kind of mountain of moving and fill out loess high roadbed in ditch engineering
And construction method.
Background technology
China's loess distribution area reaches 6.4 × 105km2, the loess plateau of the length and breadth of land is dispersed with more than 700 Main Towns,
Live the population of China 1/6.In recent years, Loess Plateau has carried out large quantities of length, big, high, difficult engineering project successively,
Wherein Zheng-west, big-western high ferro, and Yan'an, shifting mountain, Lanzhou fill out the ground engineering of making of ditch and cause worldwide extensive pass especially
Note.
Loess plateau topography and geomorphology, geological environment are complicated, move mountain, fill out ditch, make ground during run into substantial amounts of height and dig deeply
Fill out engineering, due to intact loess and Compacted Loess differences of mechanical properties, easily cause under water and Loading soil body saturated yielding and
Deformation, causes embankment engineering and the differential settlement of ground and slope deformation destruction then.Along with ditch is filled out in the large-scale Pingshan Mountain, loess area
The progressively enforcement of engineering, filled height height, embankment area become greatly the current and following development trend, are badly in need of a kind of high roadbed skill
Art, by changing the engineering mechanical properties of Compacted Loess, improves filling body internal drainage passage, then controls to move mountain and fills out in ditch work
Owing to high embankment causes saturated yielding to ultimately result in differential settlement and the slope deformation destruction of ground.
Summary of the invention
The present invention provides a kind of mountain of moving to fill out loess high roadbed and construction method thereof in ditch engineering, in order to solve in prior art
Owing to high embankment causes saturated yielding to ultimately result in the differential settlement of ground and the problem of slope deformation destruction.
Concrete, move mountain and fill out loess high roadbed in ditch engineering, high roadbed the most successively by Composite Foundation with Lime Flyash Piles layer,
Rubble drainage blanket and loess formation composition；Composite Foundation with Lime Flyash Piles layer includes the cushion lime above lime pile and lime pile；Rubble
Drainage blanket is made up of composite geo-membrane, metalling and three-dimensional composite drainage network stacking the most successively；Loess formation is by being compacted Huang
Soil layer and reinforced loess layer stacking from the bottom to top composition, in reinforced loess layer, Uniform Doped has glass fibre, in reinforced loess layer
It is equipped with multi-layer biaxially oriented GSZ.
Preferably, cushion lime is 37 lime earth, and thickness is 50cm.
Preferably, the high-density polyethylene material film that composite geo-membrane selects thickness to be 1.5mm, fabric width >=5m.
Preferably, metalling is made up of transition zone, thick granular cushion and thick sand bedding course the most successively, transition zone
Thickness be 200cm, the thickness of thick granular cushion is 40-80cm, and the thickness of thick sand bedding course is 20cm, transition zone medium stone
Crush values≤40%, maximum particle diameter≤40mm, thick granular cushion selects the good rubble of grating and gravel, thick sand bedding course choosing
The natural soft-clay good by grating or coarse sand.
Preferably, Compacted Loess layer is by Q3Or Q2Loess forms, and laying depth is 30cm, rolls compactness >=94%.
Preferably, in reinforced loess layer, loess is Q3Or Q2Loess, the glass fibre of doping and the volume ratio of loess are 0.4:
100, roll compactness >=94%.
Preferably, glass fibre is alkali-free glass fibre silk, a diameter of 11 μm of alkali-free glass fibre silk, a length of
10mm, density is 2.5g/cm3, tensile strength is 1.25GPa.
Preferably, direction earthwork grille is steel plastic geogrid, is provided with steel wire, two-way geotechnique's lattice inside steel plastic geogrid
The mass area ratio of grid is 520g/m2, the horizontal mesh length of side is 40mm, and longitudinal mesh length of side is 40mm, endwise tensile strength
For 26.09KN/m, transverse tensile strength is 25.91KN/m, and longitudinal extension rate is 12.3%, and horizontal expansion rate is 12.8%.
Move mountain and fill out the construction method of loess high roadbed in ditch engineering, comprise the following steps:
Prepare and smooth location before S1, construction, carry out staged by domatic for loess gully to cut slope smooth, form staged
Cut slope domatic (8), and clean out bottom foundation ditch, the loess bottom foundation ditch is carried out smooth；
S2, Composite Foundation with Lime Flyash Piles layer is set: according to precalculating the data determined in the original soil layer bottom foundation ditch, enter
The construction of row lime pile (1), after lime pile (1) has been constructed, lays 37 lime earth and rolls whole in the top of lime pile (1)
Flat, form cushion lime (2)；
S3, laying rubble drainage blanket: composite geo-membrane (3) is layed on cushion lime (2), lays smooth-going, degree of tightness
Appropriateness, lays metalling according to thickness requirement on composite geo-membrane (3)；Three-dimensional composite drainage network (4) is laid on metalling；
S4, laying loess formation: lay after being mixed with water by loess, roll after having laid, form compacting Huang
Soil layer (13), and Compacted Loess layer (13) is carried out an acceptance inspection；Carry out glass fibre (6) with loess adding water stirring and mix, stirring
Mixing is to without bundled glass fibers, and the reinforced loess placement in layers formed after being mixed with loess by glass fibre is layed in compacting Huang
On soil layer (13), and carry out smooth, the construction operation of compacting, form reinforced loess layer (7), the laying of reinforced loess layer (7)
Cheng Zhong, multi-layer biaxially oriented GSZ (5) is laid at interval.
Preferably, loess high roadbed and construction method thereof in ditch engineering are filled out in concrete mountain of moving, and comprise the following steps:
Prepare and smooth location before S1, construction, carry out staged by domatic for loess gully to cut slope smooth, form staged
Cut slope domatic (8), and clean out bottom foundation ditch, the loess bottom foundation ditch is carried out smooth, reserve the former of 0.5-0.7m thickness
Soil layer；
S2, Composite Foundation with Lime Flyash Piles layer is set: according to precalculating the data determined in the original soil layer bottom foundation ditch, enter
The construction of row lime pile (1)；
The step that lime pile (1) is constructed is:
Get the raw materials ready: by Q3Or Q2Loess and Calx add water according to the proportioning that mass ratio is 100:9 and carry out mix so that after mix
Moisture content close to loess optimum moisture content, wherein, lime particle diameter≤5mm, loess particle diameter≤15mm after mix；
Pore-forming: use immersed tunnelling method to construct, during construction, from two lateral middle constructions, breaks into hole every row every stake jumping；
Compacting filler: will bottom pore-forming tamp, by the Calx earth material back-filling in layers mixed and tamp formation lime pile (1),
Backfill thickness is 30-40cm every time；
After lime pile (1) has been constructed, lay 37 lime earth flattening-out at the top of lime pile (1), form 50cm thickness
Cushion lime (2)；
S3, laying rubble drainage blanket: composite geo-membrane (3) is layed on cushion lime (2), lays smooth-going, degree of tightness
Appropriateness, uses double slit welding manner to fix, lap width >=10cm between described composite geo-membrane (3)；In composite geo-membrane (3)
On according to thickness requirement lay metalling；Three-dimensional composite drainage network (4) is laid, between three-dimensional composite drainage network (4) on metalling
Overlapping part >=15cm；
S4, laying loess formation: by Q3Or Q2Loess mixes with water to be laid to optimum moisture content, laying depth 30cm,
Laying rolls after completing, compactness >=94%, forms Compacted Loess layer (13), and tests Compacted Loess layer (13)
Receive；Glass fibre (6) and loess mix with the stirring that carries out adding water of the volume ratio of 0.4:100, stirring mixing is extremely without bundled glass
Fiber, the reinforced loess placement in layers formed after being mixed with loess by glass fibre is layed on Compacted Loess layer (13), goes forward side by side
Row is smooth, the construction operation of compacting, forms reinforced loess layer (7), and reinforced loess layer (7) often fills out the compacting of paving 20-25cm thickness
Degree >=95%, in the process of deployment of reinforced loess layer (7), lays one layer of direction earthwork grille (5) at interval of 1m.
The method have the advantages that
In the present invention with the corpus luteum high roadbed of economical rationality and construction method thereof improve the overall resistance to compression of loess high roadbed,
Tension and shearing strength, and enhance antidetonation and the resistance to shock of high roadbed body, the composite foundation using lime pile to be formed has
Effect improves the bearing capacity of high roadbed, combines by laying composite geo-membrane, metalling and three-dimensional composite drainage network, constitutes
The internal drainage channel of high roadbed body, owing to bigger tensile strength and elongation percentage can bear higher soil pressure and high roadbed
The deformation of body, effectively solves high roadbed middle and lower part culvert rapid wear and causes the problem of impeded drainage, uses glass fibre with double
In terms of microcosmic and macroscopical two, jointly combine the physico-mechanical properties improving high roadbed loess to GSZ, eliminate loess
Saturated yielding and liquefaction property, the loess high roadbed in the present invention effectively solves owing to high embankment causes saturated yielding to ultimately result in
Uneven settlement of foundation and the phenomenon of slope deformation destruction.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 fills out loess high roadbed structural representation in ditch engineering for the shifting mountain that the embodiment of the present invention provides.
Description of reference numerals:
1-lime pile, 2-cushion lime, 3-composite geo-membrane, 4-three-dimensional composite drainage network, 5-direction earthwork grille, 6-glass
Glass fiber, 7-reinforced loess layer, it is domatic that 8-staged cuts slope, and 9-U shaped steel is followed closely, 10 transition zones, 11-thickness granular cushion, 12-
Thick sand bedding course, 13-Compacted Loess layer.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment 1
The embodiment of the present invention 1 provides a kind of mountain of moving to fill out loess high roadbed in ditch engineering, and high roadbed is the most successively by stone
Ash pile composite foundation layer, rubble drainage blanket and loess formation composition；Composite Foundation with Lime Flyash Piles layer includes on lime pile 1 and lime pile 1
The cushion lime 2 of side；Rubble drainage blanket is the most successively by composite geo-membrane 3, metalling and three-dimensional composite drainage network 4 stacking
Composition；Loess formation is made up of Compacted Loess layer 13 and reinforced loess layer 7 stacking from the bottom to top, Uniform Doped in reinforced loess layer 7
There is glass fibre 6, reinforced loess layer 7 is equipped with multi-layer biaxially oriented GSZ 5, concrete, the diameter of lime pile 1, pile spacing
All should be combined the magnitude of load of filling body according to top with the degree of depth and Bearing Capacity of Composite Foundation carries out calculating in advance and comes really
Fixed, the direction earthwork grille 5 of laying is steel plastic geogrid, is provided with steel wire inside steel plastic geogrid, direction earthwork grille 5
Mass area ratio is 520g/m2, the horizontal mesh length of side is 40mm, and longitudinal mesh length of side is 40mm, and endwise tensile strength is
26.09KN/m, transverse tensile strength is 25.91KN/m, and longitudinal extension rate is 12.3%, and horizontal expansion rate is 12.8%.
Wherein, cushion lime 2 is 37 lime earth, and thickness is 50cm, dirt pad, and about 2 are equipped with geotextiles respectively, in order to
Protection cushion lime 2 and composite geo-membrane 3；The high-density polyethylene material film that composite geo-membrane 3 selects thickness to be 1.5mm, width
Wide 5m, composite geo-membrane 3 has high-tensile, the feature of low elongation, plays reinforcement enhancing, isolation, protective action, prevents
Moisture penetrates in Composite Foundation with Lime Flyash Piles layer；Metalling is the most successively by transition zone 10, thick granular cushion 11 and thickness
Sand bedding course 12 forms, and the thickness of transition zone 10 is 200cm, and the thickness of thick granular cushion 11 is 80cm, thick sand bedding course 12
Thickness is 20cm, transition zone 10 medium stone crush values≤40%, maximum particle diameter≤40mm, and thick granular cushion 11 selects grating
Good rubble and gravel, thick sand bedding course 12 selects the good natural soft-clay of grating or coarse sand, composite geo-membrane 3, metalling and
Three-dimensional composite drainage network 4 combines, and constitutes the internal drainage channel of high roadbed body；Compacted Loess layer 13 is by Q3Or Q2Loess group
Becoming, laying depth is 30cm, rolls compactness >=94%；In reinforced loess layer 7, loess is Q3Or Q2Loess, the glass fibers of doping
The volume ratio of dimension 6 and loess is 0.4:100, rolls compactness >=94%；The glass fibre 6 added is alkali-free glass fibre silk,
A diameter of 11 μm of alkali-free glass fibre silk, a length of 10mm, density is 2.5g/cm3, tensile strength is 1.25GPa；Pass through glass
Glass fiber is in close contact with loess granule, is effectively improved the configuration of loess porous from microstructure, improves improvement loess
Cohesion and internal friction angle, increase the improvement cracking resistance of loess, tension, resistance to compression and shearing strength, improve the antivibration of ground simultaneously
Performance, and then reach effectively to control foundation deformation；In reinforced loess layer 7, level lays direction earthwork grille 5 as loessland
Base reinforcement material, can greatly strengthen foundation bearing capacity, reduces settlement of foundation, and both combine form compound foundation, can improve ground
The resistance to compression of base entirety, tension, shearing strength, eliminate collapsibility of loess to greatest extent and strengthen the resistance to shock of ground.
Concrete, move mountain and fill out loess high roadbed and construction method thereof in ditch engineering, comprise the following steps:
Prepare and smooth location before S1, construction, carry out staged by domatic for loess gully to cut slope smooth, form staged
Cut slope domatic 8, and clean out bottom foundation ditch, the loess bottom foundation ditch is carried out smooth, reserved original soil layer thick for 0.7m.
S2, Composite Foundation with Lime Flyash Piles layer is set:
It is combined the magnitude of load of filling body according to top and calculating that Bearing Capacity of Composite Foundation is carried out in advance determines stone
The ash diameter of stake 1, pile spacing and the degree of depth；
Get the raw materials ready: by Q3Or Q2Loess and Calx add water according to the proportioning that mass ratio is 100:9 and carry out mix so that after mix
Moisture content close to loess optimum moisture content, wherein, lime particle diameter≤5mm, loess particle diameter≤15mm after mix；
Pore-forming: use immersed tunnelling method to construct, during construction, from two lateral middle constructions, breaks into hole every row every stake jumping；
Compacting filler: will bottom pore-forming tamp, by the Calx earth material back-filling in layers mixed and tamp formation lime pile 1, often
Secondary backfill thickness is 40cm；
Lay cushion lime 2: after lime pile 1 backfill is formed, lay 37 lime earth flattening-out, shape at the top of lime pile 1
Becoming cushion lime 2 thick for 50cm, dirt pad about 2 is equipped with geotextiles respectively, in order to protect cushion lime 2 and composite geo-membrane
3。
S3, laying rubble drainage blanket: being layed in by composite geo-membrane 3 on cushion lime 2, lay smooth-going, degree of tightness is appropriate,
Double slit welding manner is used to fix between composite geo-membrane 3, lap width 10cm, the composite geo-membrane 3 using width to be 5m, multiple
Close geomembrane both sides geotextiles and carry out adding rough process, during Geotextile hand rubbing must not running, composite geo-membrane uses blown film to add
Hot composite algorithm, composite geo-membrane use embedded laying, slope base pressure under toe key-wall, answer composite geo-membrane by crimping 15cm,
And using a diameter of Φ 8, a length of 40cm, level interval is the U-shaped steel nail 9 flanging anchoring of 1.5m；On composite geo-membrane 3 upper berth
If 200cm thickness transition zone 10,40～80cm thickness granular cushion 11,20cm thickness sand bedding course 12, form the row within filling body
Water gallery；Laying three-dimensional composite drainage network 4 on thick sand bedding course 12, between three-dimensional composite drainage network 4, overlapping part is 15cm, adopts
Carrying out the overlap joint between the adjacent row network of rivers by tack welding method, slope base pressure, should be by three-dimensional composite drainage network volume 4 under toe key-wall
Limit 15cm, and use a diameter of Φ 8, a length of 40cm, level interval is the U-shaped steel nail 9 flanging anchoring of 1.5m.
S4, laying loess formation: by Q3Or Q2Loess mixes with water to be laid to optimum moisture content, laying depth 30cm,
Laying rolls after completing, compactness >=94%, forms Compacted Loess layer 13, and carries out an acceptance inspection Compacted Loess layer 13；Will
Glass fibre 6 and loess mixs with the stirring that carries out adding water of the volume ratio of 0.4:100, and stirring mixing, extremely without bundled glass fibers, is mixed
Reinforced loess moisture content after conjunction is close to this ground loess optimum moisture content, and the reinforcement formed after being mixed with loess by glass fibre is yellow
Soil placement in layers is layed on Compacted Loess layer 13, and carries out smooth, the construction operation of compacting, forms reinforced loess layer 7, reinforcement
Loess formation 7 often fills out compactness >=95% of paving 25cm thickness, in the process of deployment of reinforced loess layer 7, lays one layer at interval of 1m
Direction earthwork grille 5.
This ground loess optimum moisture content described in above-mentioned steps is this ground loess of finger and closes most when reaching maximum dry density
Suitable water content, can reach under this water content and optimal hits actual effect fruit.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and amendment to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and modification belong to the scope of the claims in the present invention and equivalent technologies thereof
Within, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. loess high roadbed in ditch engineering is filled out on a shifting mountain, it is characterised in that described high roadbed is the most successively by lime pile
Composite foundation layer, rubble drainage blanket and loess formation composition；Described Composite Foundation with Lime Flyash Piles layer includes lime pile (1) and lime pile
(1) cushion lime (2) of top；Described rubble drainage blanket is multiple by composite geo-membrane (3), metalling and three-dimensional the most successively
Close drainage network (4) stacking composition；Described loess formation is by Compacted Loess layer (13) and reinforced loess layer (7) stacking group from the bottom to top
Becoming, in described reinforced loess layer (7), Uniform Doped has glass fibre (6), is equipped with multi-layer biaxially oriented in described reinforced loess layer (7)
GSZ (5).
Loess high roadbed in ditch engineering is filled out on shifting mountain the most according to claim 1, it is characterised in that described cushion lime (2)
For 37 lime earth, thickness is 50cm.
Loess high roadbed in ditch engineering is filled out on shifting mountain the most according to claim 1, it is characterised in that described composite geo-membrane
(3) the high-density polyethylene material film selecting thickness to be 1.5mm, fabric width >=5m.
Loess high roadbed in ditch engineering is filled out on shifting mountain the most according to claim 1, it is characterised in that described metalling by down to
On be made up of transition zone (10), thick granular cushion (11) and thickness sand bedding course (12) successively, the thickness of described transition zone (10)
For 200cm, the thickness of described thick granular cushion (11) is 40-80cm, and the thickness of described thick sand bedding course (12) is 20cm, institute
Stating transition zone (10) medium stone crush values≤40%, maximum particle diameter≤40mm, described thick granular cushion (11) selects grating
Good rubble and gravel, described thick sand bedding course (12) selects the good natural soft-clay of grating or coarse sand.
Loess high roadbed in ditch engineering is filled out on shifting mountain the most according to claim 1, it is characterised in that described Compacted Loess layer
(13) by Q3Or Q2Loess forms, and laying depth is 30cm, rolls compactness >=94%.
Loess high roadbed in ditch engineering is filled out on shifting mountain the most according to claim 1, it is characterised in that described reinforced loess layer
(7) in, loess is Q3Or Q2Loess, the glass fibre (6) of doping and the volume ratio of loess are 0.4:100, roll compactness >=
94%.
Loess high roadbed in ditch engineering is filled out on shifting mountain the most according to claim 1, it is characterised in that described glass fibre (6)
For alkali-free glass fibre silk, a diameter of 11 μm of described alkali-free glass fibre silk, a length of 10mm, density is 2.5g/cm3, anti-
Tensile strength is 1.25GPa.
Loess high roadbed in ditch engineering is filled out on shifting mountain the most according to claim 1, it is characterised in that described direction earthwork grille
(5) it is steel plastic geogrid, inside described steel plastic geogrid, is provided with steel wire, the unit are of described direction earthwork grille (5)
Quality is 520g/m2, the horizontal mesh length of side is 40mm, and longitudinal mesh length of side is 40mm, and endwise tensile strength is 26.09KN/m,
Transverse tensile strength is 25.91KN/m, and longitudinal extension rate is 12.3%, and horizontal expansion rate is 12.8%.
9. a construction method for loess high roadbed in ditch engineering is filled out on the mountain of moving as described in claim 1-8 is arbitrary, and its feature exists
In, comprise the following steps:
Prepare and smooth location before S1, construction, carry out staged by domatic for loess gully to cut slope smooth, form staged and cut slope
Domatic (8), and clean out bottom foundation ditch, the loess bottom foundation ditch is carried out smooth；
S2, Composite Foundation with Lime Flyash Piles layer is set: according to precalculating the data determined in the original soil layer bottom foundation ditch, carry out stone
The construction of ash stake (1), after lime pile (1) has been constructed, lays 37 lime earth and rolls leveling in the top of lime pile (1), shape
Become cushion lime (2)；
S3, laying rubble drainage blanket: being layed in by composite geo-membrane (3) on cushion lime (2), lay smooth-going, degree of tightness is appropriate,
Composite geo-membrane (3) lays metalling according to thickness requirement；Three-dimensional composite drainage network (4) is laid on metalling；
S4, laying loess formation: lay after loess is mixed with water, roll after having laid, form Compacted Loess layer
(13), and to Compacted Loess layer (13) carry out an acceptance inspection；Carry out glass fibre (6) with loess adding water stirring and mix, stirring mixing
To without bundled glass fibers, the reinforced loess placement in layers formed after being mixed with loess by glass fibre is layed in Compacted Loess layer
(13) on, and carry out smooth, the construction operation of compacting, form reinforced loess layer (7), in the process of deployment of reinforced loess layer (7),
Multi-layer biaxially oriented GSZ (5) is laid at interval.
The construction method of loess high roadbed in ditch engineering is filled out on shifting mountain the most according to claim 9, it is characterised in that include
Following steps:
Prepare and smooth location before S1, construction, carry out staged by domatic for loess gully to cut slope smooth, form staged and cut slope
Domatic (8), and clean out bottom foundation ditch, the loess bottom foundation ditch is carried out smooth, reserved original soil layer thick for 0.5-0.7m；
S2, Composite Foundation with Lime Flyash Piles layer is set: according to precalculating the data determined in the original soil layer bottom foundation ditch, carry out stone
The construction of ash stake (1)；
The step that lime pile (1) is constructed is:
Get the raw materials ready: by Q3Or Q2Loess and Calx add water according to the proportioning that mass ratio is 100:9 and carry out mix so that containing after mix
Water rate is close to loess optimum moisture content, wherein, and lime particle diameter≤5mm, loess particle diameter≤15mm after mix；
Pore-forming: use immersed tunnelling method to construct, during construction, from two lateral middle constructions, breaks into hole every row every stake jumping；
Compacting filler: will bottom pore-forming tamp, by the Calx earth material back-filling in layers mixed and tamp formation lime pile (1), every time
Backfill thickness is 30-40cm；
After lime pile (1) has been constructed, lay 37 lime earth flattening-out at the top of lime pile (1), form the thick dirt of 50cm
Bed course (2)；
S3, laying rubble drainage blanket: being layed in by composite geo-membrane (3) on cushion lime (2), lay smooth-going, degree of tightness is appropriate,
Double slit welding manner is used to fix between described composite geo-membrane (3), lap width >=10cm；Composite geo-membrane (3) is pressed
Metalling is laid according to thickness requirement；Lay three-dimensional composite drainage network (4) on metalling, overlap between three-dimensional composite drainage network (4)
Position >=15cm；
S4, laying loess formation: by Q3Or Q2Loess mixes with water to be laid to optimum moisture content, laying depth 30cm, lays
Roll after completing, compactness >=94%, form Compacted Loess layer (13), and Compacted Loess layer (13) is carried out an acceptance inspection；Will
Glass fibre (6) and loess mixs with the stirring that carries out adding water of the volume ratio of 0.4:100, stirring mixing extremely without bundled glass fibers,
The reinforced loess placement in layers formed after being mixed with loess by glass fibre is layed on Compacted Loess layer (13), and puts down
Whole, compacting construction operation, formed reinforced loess layer (7), reinforced loess layer (7) often fill out paving 20-25cm thickness compactness >=
95%, in the process of deployment of reinforced loess layer (7), lay one layer of direction earthwork grille (5) at interval of 1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610693434.3A CN106193062A (en) | 2016-08-19 | 2016-08-19 | Loess high roadbed and construction method thereof in ditch engineering are filled out in a kind of mountain of moving |
Applications Claiming Priority (1)
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| CN106917634A (en) * | 2017-01-13 | 2017-07-04 | 吕梁市希贤治黄研究所 | The plant equipment and method of mine worked-out section mud backfill |
| CN107859041A (en) * | 2017-09-20 | 2018-03-30 | 中铁三局集团有限公司 | The construction method of collapsible loess zanjon high roadbed structure |
| CN109881547A (en) * | 2019-01-29 | 2019-06-14 | 同济大学 | Airfield pavement settlement of subgrade control structure and construction technology are worn under high-speed rail tunnel |
| CN111041926A (en) * | 2019-11-21 | 2020-04-21 | 江苏永联精筑建设集团有限公司 | Construction method of drainage concrete pavement |
| CN111236269A (en) * | 2020-01-21 | 2020-06-05 | 山西机械化建设集团有限公司 | Layered laying and combining reinforcement method for geotechnical material in airport high slope area |
| CN113756317A (en) * | 2021-09-27 | 2021-12-07 | 蓝海建设集团有限公司 | Collapsible loess foundation treatment method |
| CN113892385A (en) * | 2021-09-29 | 2022-01-07 | 广州城建职业学院 | Arbor planting process with improved 'reverse pot bottom' form |
| CN114032874A (en) * | 2021-11-30 | 2022-02-11 | 长安大学 | Trench land remediation structure and method for loess plateau trench reclamation |
| CN114382159A (en) * | 2022-01-07 | 2022-04-22 | 安徽省交通规划设计研究总院股份有限公司 | Underground reservoir constructed by geosynthetics and gravel |
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| CN106917634B (en) * | 2017-01-13 | 2020-11-06 | 吕梁市希贤治黄研究所 | Mechanical equipment and method for backfilling slurry in mine goaf |
| CN106917634A (en) * | 2017-01-13 | 2017-07-04 | 吕梁市希贤治黄研究所 | The plant equipment and method of mine worked-out section mud backfill |
| CN107859041A (en) * | 2017-09-20 | 2018-03-30 | 中铁三局集团有限公司 | The construction method of collapsible loess zanjon high roadbed structure |
| CN109881547A (en) * | 2019-01-29 | 2019-06-14 | 同济大学 | Airfield pavement settlement of subgrade control structure and construction technology are worn under high-speed rail tunnel |
| CN109881547B (en) * | 2019-01-29 | 2021-04-27 | 同济大学 | Uneven settlement control structure of roadbed of airport pavement passing under high-speed railway tunnel and construction process |
| CN111041926A (en) * | 2019-11-21 | 2020-04-21 | 江苏永联精筑建设集团有限公司 | Construction method of drainage concrete pavement |
| CN111236269A (en) * | 2020-01-21 | 2020-06-05 | 山西机械化建设集团有限公司 | Layered laying and combining reinforcement method for geotechnical material in airport high slope area |
| CN111236269B (en) * | 2020-01-21 | 2021-11-02 | 山西机械化建设集团有限公司 | Layered laying and combining reinforcement method for geotechnical material in airport high slope area |
| CN113756317A (en) * | 2021-09-27 | 2021-12-07 | 蓝海建设集团有限公司 | Collapsible loess foundation treatment method |
| CN113756317B (en) * | 2021-09-27 | 2022-11-04 | 蓝海建设集团有限公司 | Collapsible loess foundation treatment method |
| CN113892385A (en) * | 2021-09-29 | 2022-01-07 | 广州城建职业学院 | Arbor planting process with improved 'reverse pot bottom' form |
| CN114032874A (en) * | 2021-11-30 | 2022-02-11 | 长安大学 | Trench land remediation structure and method for loess plateau trench reclamation |
| CN114382159A (en) * | 2022-01-07 | 2022-04-22 | 安徽省交通规划设计研究总院股份有限公司 | Underground reservoir constructed by geosynthetics and gravel |
| CN114382159B (en) * | 2022-01-07 | 2023-08-22 | 安徽省交通规划设计研究总院股份有限公司 | Underground reservoir constructed by geosynthetic material and sand |
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