CN105002927B - A kind of construction method of execavated rockmass barricade loaded filter - Google Patents
A kind of construction method of execavated rockmass barricade loaded filter Download PDFInfo
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- CN105002927B CN105002927B CN201510329757.XA CN201510329757A CN105002927B CN 105002927 B CN105002927 B CN 105002927B CN 201510329757 A CN201510329757 A CN 201510329757A CN 105002927 B CN105002927 B CN 105002927B
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- barricade
- loaded filter
- separating film
- strength water
- domatic
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Abstract
The invention discloses a kind of construction method of execavated rockmass barricade loaded filter, after the molding of domatic excavation, by domatic vibration compacting, Short bolt is squeezed in slopes, in the domatic outer termination reserving certain length, and lay the strong water-separating film of a floor height and be fixed on Short bolt termination, the closely knit sand gravel loaded filter of filling between high-strength water-separating film and domatic Rock And Soil, after high-strength water-separating film being fixed on domatic with Short bolt, filling sand gravel loaded filter vibration compacting between high-strength water-separating film and Rock And Soil, barricade of then constructing again.After sand gravel loaded filter vibration compacting, high-strength water-separating film can form outer surface that is more smooth and having certain rigidity, the effect of inner template can be played in Retaining wall, wall rear pattern plate during therefore alternative routine Retaining wall, do not need to remove the operation of inner template after the completion of Retaining wall, work progress greatly simplifies, and after barricade, loaded filter construction quality is easy to ensure, effectively increases the construction quality of barricade and the reliability of retaining engineering.
Description
Technical field
The present invention relates to being related to a kind of construction method of execavated rockmass barricade loaded filter.
Background technology
Side slope and its unstable failure of retaining engineering, most of relevant with underground hydric factor, for barricade engineering,
Lead to water drainage behind the wall not smooth if loaded filter construction quality is not good after wall, because the increase of hydrostatic pressure and water are to ground after wall
The reduction of mechanics characteristic, leads to the horizontal earth pressure that barricade bears to substantially increase, thus the probability increase of barricade unstable failure,
The reliability of retaining engineering reduces.Therefore after wall, the construction quality of loaded filter is the key factor that barricade engineering construction quality controls
One of.
At present, after barricade wall, loaded filter mainly has two kinds of construction methods：(1) first after wall, installation form carries out barricade again and applies
Work, Retaining wall completes, and removes wall rear pattern plate by way of drawing, then pours into the anti-filter layer material such as sand gravel, and it is close to vibrate
Real.(2) the first anti-filter layer material such as bagged sand gravel or non-fine concrete after wall, and set up template, then barricade of constructing.First
Kind of method operation is more complicated, the sand gravel loaded filter pouring in narrow space after the completion of Retaining wall, sand gravel closely knit
The construction qualities such as degree, filling degree are difficult to ensure that.Second method excavation domatic more smooth under conditions of, construction quality is relatively
Good, but the complex characteristics due to Rock And Soil, excavation face is often rugged and rough, and for having the soil engineering bag of anti-filter function, no sand mixes
For the materials such as concrete board, size general expression is fixed it is difficult to form burnishing surface in loaded filter near the side of barricade, therefore easily
Cause domatic after barricade and wall between loaded filter discontinuity.
At present, China is in the high-speed developing period of infrastructure construction, all can build substantial amounts of slope supporting work every year
Journey, barricade is one of the most commonly used slope supporting measure.For barricade engineering, if loaded filter construction quality is not after wall
Good, it is easily caused impeded drainage or even hydrops in rock-soil layer after wall, lead to the increase of load and rock mechanical property after wall
Deterioration, the reliability greatly reducing retaining engineering even causes disease
Content of the invention
The purpose of the present invention is for above-mentioned present situation, it is desirable to provide one kind is without inner template working procedure, working procedure letter
Single, can guarantee that quality, the high execavated rockmass barricade loaded filter of reliability and its construction method.
The implementation of the object of the invention is, a kind of construction method of execavated rockmass barricade loaded filter, barricade loaded filter by
High-strength water-separating film and permeable sand gravel layer composition specific implementation step are as follows：
1) excavation slope, after the completion of slope excavating, finishing is domatic, removes domatic protruding parts, porous spot is vibrated close
Real；In barricade bottom first row drain pipe position below, according to the design shape after barricade wall, filled smooth with cement mortar
Or filled using plain concrete, mortar flag stone；
2) by Short bolt by equidistantly squeezing in slopes, reserve in order to fixing follow-up laying high-strength water-separating film in domatic outside
Termination；
3) start laying high-strength water-separating film near the first row position of drain pipe of barricade bottom, by the bottom of high-strength water-separating film
Using short anchoring on domatic, remaining position of high-strength water-separating film is fixed on domatic using with Short bolt, each anchor of Short bolt
High-strength water-separating film between solid point forms an approximate plane, high-strength water-separating film and domatic between spacing be 20～50cm；High
The intensity of strong water-separating film seam crossing is not less than the 90% of high-strength water proof film-strength；
4) sand gravel anti-filter level routinely joins regulation, in high-strength water-separating film and domatic filling sand gravel loaded filter, and
Vibration compacting；The sand gravel loaded filter of filling pours at high-strength water-separating film upper opening；Sand gravel loaded filter fill with high
The laying intersection of strong water-separating film is carried out；
5) construction barricade：
Barricade adopts concrete material, or adopts mortar flag stone material；
1. during construction concrete guard wall, after the completion of loaded filter construction, template, casting concrete are set up outside, until keeping off
Wall construction completes；
2. construct retaining wall when, after the completion of loaded filter construction, first smear thick 2 in high-strength water proof film outer surface～
The cement mortar of 5cm, then build slabstone by laying bricks or stones, until Retaining wall completes.
The present invention, after the molding of domatic excavation, lays the strong water-separating film of a floor height domatic, in high-strength water-separating film and Rock And Soil
Between the closely knit sand gravel loaded filter of filling, using Short bolt by high-strength water-separating film be fixed on domatic upper after, in high-strength water-separating film
Filling sand gravel loaded filter vibration compacting and between Rock And Soil, barricade of then constructing again.Due to sand gravel loaded filter vibration compacting
Afterwards, high-strength water-separating film can form outer surface that is more smooth and having certain rigidity, can play inner template in Retaining wall
Effect, the wall rear pattern plate during therefore alternative routine Retaining wall, do not need to remove inner template after the completion of Retaining wall
Operation, not only saved material cost, work progress greatly simplifies, after barricade loaded filter construction quality be also easier to ensure,
Thus effectively increasing the construction quality of barricade and the reliability of retaining engineering.
The present invention also resides in a little：
(1) compared with the construction method setting up template inside barricade, the erection of inner template can be reduced, remove with operation, and
And the laying with high-strength water-separating film, successively perfusion sand gravel loaded filter vibration compacting, the construction quality of loaded filter is easier
It is guaranteed.
(2) build compared with packed sand gravel or the construction method of non-fine concrete loaded filter with code after wall, excavate to after wall
The smooth degree of side slope is less demanding；Due to the complexity of ground bulk properties, after wall, side slope excavation face is in often rugged and rough form, shadow
Ring the construction quality of soil engineering bag loaded filter, and present invention effect in terms of construction quality guarantee is more excellent.
Brief description
Fig. 1 is the execavated rockmass barricade loaded filter structural representation constructed by the present invention,
Fig. 2 is the Short bolt form schematic diagram of fixing high-strength water-separating film,
Fig. 3 is short anchor structure schematic diagram,
Fig. 4 is with sinew adding strip restraint and high-strength water-separating film mode figure,
Fig. 5,6 it is that high-strength water-separating film overlaps schematic diagram.
Specific embodiment
After the wall of the present invention loaded filter mainly by high-strength water-separating film 1, sand gravel loaded filter 2, fill layer 3, fixing HDPE film
Short bolt 4, the composition such as the part such as short anchor 5.The present invention comprises the following steps that：
1) excavation slope, after the completion of slope excavating, the ratio of slope finishing according to design is domatic, removes domatic protruding parts, to thin
Loose position vibration compacting；In barricade bottom first row drain pipe 6 position below, according to the design shape after barricade wall, use water
Cement mortar fills smooth formation and fills layer 3 or fill formation using materials such as plain concrete, mortar flag stones and fill layer 3.
2) according to the spacing of 0.5m × 0.5m～1m × 1m, Short bolt 4 is squeezed in slopes, reserve necessarily in domatic outside
The termination of length, in order to the high-strength water-separating film 1 of fixing follow-up laying；
Short bolt 4 is adopted spiral to make or is made using regular reinforcement, inserts Rock And Soil after wall using hammer mode.
When after wall, slope stability is poor, the Short bolt 4 of fixing high-strength water-separating film is alternatively common grouting rock bolt, but Short bolt end
The extension elongation of head should have more 3～5cm than the position of laying high-strength water-separating film.
With reference to Fig. 2, the Short bolt 4 of fixing high-strength water-separating film is provided with 2 big pads above, and internal gasket 16 adopts welding side
Formula is anchored on anchor pole 4, or using thin wire colligation on anchor pole.After high-strength water-separating film to be laid, then by outer pad 15 with carefully
Iron wire colligation is on anchor pole 4.After two big pads are fixing by high-strength water-separating film, good effect of contraction can be played,
Vibrate sand gravel loaded filter when, the stress performance of high-strength water-separating film can be improved.
3) start laying high-strength water-separating film 1 near barricade bottom first row drain pipe 6 position, and by high-strength water-separating film 1
Bottom be fixed on domatic using short anchor 5, remaining position of high-strength water-separating film 1 is fixed on domatic using Short bolt 4, short anchor
High-strength water-separating film 1 between each anchor point of bar 4 forms an approximate plane.High-strength water-separating film is fixed on domatic with short anchor 5, high
Strong water-separating film and domatic between spacing be 20～50cm.
High-strength water-separating film should have good water-resisting property, to avoid cement mortar in work progress to penetrate into sand gravel anti-filter
Layer；High-strength water-separating film should have certain intensity, and under generic condition, its bidirectional stretch intensity is typically no less than 25kN/m, to avoid
The puncture of coarse aggregate in construction and process of vibrating, and provide enough restraining forceies for sand gravel loaded filter after wall；Can also adopt
Have and radially replace high-strength water-separating film with materials such as the PVC film of broadwise reinforcing fibre.The thickness of high-strength water-separating film is typically unsuitable little
In 1mm, width can determine according to the height of barricade and length.
High-strength water-separating film can be with horizontal direction laying it is also possible to vertical direction be laid, can be according to the height of barricade and length
Determine.The high-strength water-separating film of two-layer can overlap in horizontal level, also can vertical position overlap joint (see Fig. 5,6)；High-strength water-separating film
Seam crossing adopts hot melt tooled joint to connect, or adopts nylon line suture, lap width >=5cm.The intensity of seam crossing 14 is not less than height
The 90% of strong water proof film-strength.
With reference to Fig. 3, short anchor 5 is inverted L-shaped 11, π shape 12 or tee pipe 13, and its effect is end anchorage and the gear of high-strength water-separating film
Excavate domatic after wall, short anchor 5 typically can be bent using reinforcing bar and form.
Barricade drain pipe 6 adopts common PVC drain pipe, that is, the one end going deep into sand gravel loaded filter need to arrange some circles
Hole, 3～5 layers of infiltration geotextiles of outer wrap.Barricade drain pipe is positioned over setting position before pouring into sand gravel loaded filter, or
After the completion of entirely domatic loaded filter construction, on high-strength water-separating film, borehole is installed.
4) often laying height is the high-strength water-separating film of 1m ± 0.2m, pours into sand gravel loaded filter once.Level routinely is joined
Regulation, in high-strength water-separating film and domatic filling sand gravel loaded filter 2, filling typically pours at high-strength water-separating film upper opening,
And adopt internal vibration device vibration compacting.When vibrating sand gravel loaded filter 2, high-strength water proof film outer surface should adopt smooth
Template back-pressure, or adopt sinew adding strip the way of restraint.
When vibrating sand gravel loaded filter, for avoiding high-strength water-separating film discontinuity to cause the oxygen blast cyanidation of appearance,
Sinew adding strip the way of restraint can be adopted, sinew adding strip 10 adopts decussation mode, and as shown in Figure 4 rice word X-type may also be employed
Formula.Sinew adding strip is fine steel rib form, using on the Short bolt 4 being welded in fixing high-strength water-separating film；Sinew adding strip or adopt thin wire
Form, colligation is on the Short bolt 4 of fixing high-strength water-separating film；Sinew adding strip or the flexible rib tape material of employing, colligation is high-strength in fixation
On the Short bolt 4 of water-separating film.
5) construction barricade, forms execavated rockmass barricade anti-filter Rotating fields as shown in Figure 1.In figure is excavated domatic after having barricade
9.Barricade can adopt concrete material, it would however also be possible to employ mortar flag stone material.
1. during construction concrete guard wall, after the completion of loaded filter construction, template, casting concrete are set up outside, until keeping off
Wall construction completes；
2. construct retaining wall when, after the completion of loaded filter construction, first smear thick 2 in high-strength water proof film outer surface～
The cement mortar of 5cm, then build slabstone by laying bricks or stones, until Retaining wall completes.
Sand gravel loaded filter is typically made up of the preferable sand gravel of water penetration, and its specification should meet the sand gravel anti-filter of routine
The regulation of layer.Under generic condition, often lay high 1m about high-strength water-separating film, that is, pour into sand gravel loaded filter once, and
Using internal vibration device vibration compacting, in case the oxygen blast cyanidation of high-strength water-separating film appearance.Sand gravel loaded filter fill with
High-strength water-separating film laying intersection is carried out.
In barricade bottom first row drain pipe 6 position below, according to the design shape after barricade wall, filled out with cement mortar
Build smooth, or filled using plain concrete, mortar flag stone material, form more firm loaded filter and support bed course.
With reference to Fig. 1, when slope stability is poor, or water located underground compared with horn of plenty regional when, in order to improve side slope
Stability, often need to arrange side slope deep layer drain pipe 7.When being provided with side slope deep layer drain pipe 7, in laying high-strength water-separating film, only
An aperture need to be dug in the position of side slope deep layer drain pipe 7, side slope deep layer drain pipe 7 is passed through high-strength water-separating film.Filling
Enter and vibrate sand gravel loaded filter when should strengthen at side slope deep layer drain pipe 7 position protection.
As barricade drain pipe 6 unnecessary 1 row, at the drain pipe of every layer of top, high-strength water-separating film can be rolled, roll position
High-strength water-separating film is fixed on domatic using short anchor 5.
Claims (6)
1. a kind of construction method of execavated rockmass barricade loaded filter it is characterised in that：Barricade loaded filter is by high-strength water-separating film and thoroughly
The sand gravel layer composition specific implementation step of water is as follows：
1) excavation slope, after the completion of slope excavating, finishing is domatic, removes domatic protruding parts, to porous spot vibration compacting；?
Barricade bottom first row drain pipe position below, according to the design shape after barricade wall, fills smooth with cement mortar or adopts
Filled with plain concrete, mortar flag stone；
One end that barricade drain pipe gos deep into sand gravel loaded filter need to arrange some circular holes, 3～5 layers of infiltration geotextiles of outer wrap；
Barricade drain pipe is positioned over setting position before pouring into sand gravel loaded filter, or after the completion of entirely domatic loaded filter is constructed,
On high-strength water-separating film, borehole is installed；
2) by Short bolt by equidistantly squeezing in slopes, reserve the end in order to fixing follow-up laying high-strength water-separating film in domatic outside
Head；
3) start laying high-strength water-separating film near the first row position of drain pipe of barricade bottom, the bottom of high-strength water-separating film is adopted
On domatic, remaining position of high-strength water-separating film is fixed on domatic using with Short bolt, each anchor point of Short bolt for short anchoring
Between high-strength water-separating film form an approximate plane, high-strength water-separating film and domatic between spacing be 20～50cm；High-strength every
The intensity of moisture film seam crossing is not less than the 90% of high-strength water proof film-strength；
4) sand gravel anti-filter level routinely joins regulation, in high-strength water-separating film and domatic filling sand gravel loaded filter, and vibrates
Closely knit；The sand gravel loaded filter of filling pours at high-strength water-separating film upper opening；Sand gravel loaded filter fill with high-strength every
The laying intersection of moisture film is carried out；
When vibrating sand gravel loaded filter, high-strength water proof film outer surface adopts smooth template back-pressure, or using sinew adding strip constraint
Mode；
5) construction barricade：
Barricade adopts concrete material, or adopts mortar flag stone material；
1. during construction concrete guard wall, after the completion of loaded filter construction, template, casting concrete are set up outside, until barricade is applied
Work completes；
2., during construction retaining wall, after the completion of loaded filter construction, first smear thick 2～5cm's in high-strength water proof film outer surface
Cement mortar, then build slabstone by laying bricks or stones, until Retaining wall completes.
2. a kind of execavated rockmass barricade loaded filter according to claim 1 construction method it is characterised in that：According to 0.5m
The spacing of × 0.5m～1m × 1m squeezes into Short bolt (4) in slopes.
3. a kind of execavated rockmass barricade loaded filter according to claim 1 construction method it is characterised in that：High-strength water proof
The seam crossing of film adopts hot melt tooled joint to connect, or adopts nylon line suture, lap width >=5cm.
4. a kind of execavated rockmass barricade loaded filter according to claim 1 construction method it is characterised in that：Often lay high
The high-strength water-separating film of 1m ± 0.2m, pours into sand gravel loaded filter once.
5. a kind of execavated rockmass barricade loaded filter according to claim 1 construction method it is characterised in that：Under barricade
Portion's first row drain pipe (6) position below, according to the design shape after barricade wall, is filled smooth with cement mortar, or adopts
Plain concrete, mortar flag stone material fill, and form firm loaded filter and support bed course.
6. a kind of execavated rockmass barricade loaded filter according to claim 1 construction method it is characterised in that：Barricade draining
Pipe (6) adopts common PVC drain pipe.
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| CN201510329757.XA CN105002927B (en) | 2015-06-15 | 2015-06-15 | A kind of construction method of execavated rockmass barricade loaded filter |
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| CN201510329757.XA CN105002927B (en) | 2015-06-15 | 2015-06-15 | A kind of construction method of execavated rockmass barricade loaded filter |
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| CN105002927B true CN105002927B (en) | 2017-03-08 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696607A (en) * | 2016-04-05 | 2016-06-22 | 中铁隧道勘测设计院有限公司 | Supporting manner for fully-sandy bed dry dock slope |
| CN106567404A (en) * | 2016-11-09 | 2017-04-19 | 中交公局第四工程有限公司 | Expansive soil cutting semi-rigid top retaining wall design and construction method |
| CN106676991A (en) * | 2017-01-23 | 2017-05-17 | 中铁第四勘察设计院集团有限公司 | Expansive soil embankment structure improved and reinforced by sandwich method and construction method |
| CN111501458A (en) * | 2020-04-26 | 2020-08-07 | 中建八局第二建设有限公司 | Paving method of stone-filled roadbed |
| CN111622216A (en) * | 2020-06-05 | 2020-09-04 | 成都建工集团有限公司 | Construction method of pile foundation joist weighing type retaining wall |
| CN113982004B (en) * | 2021-12-24 | 2022-05-10 | 太原理工大学 | Anchor cable-reinforced soil combined retaining member and construction method thereof |
| CN114197519B (en) * | 2021-12-29 | 2023-06-30 | 吉林铁道勘察设计院有限公司 | Railway retaining wall assembled reverse filtering structure and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5715771B2 (en) * | 2010-06-17 | 2015-05-13 | 晋市 湯田 | Wall surface structure and wall surface construction method |
| CA2756268C (en) * | 2010-10-27 | 2014-07-29 | Tricon Precast, Ltd. | Connection system and method for mechanically stabilized earth wall |
| CN102864789B (en) * | 2012-08-17 | 2015-09-30 | 中铁四局集团第五工程有限公司 | A kind of construction method of retaining wall drainage system |
| CN203452102U (en) * | 2013-07-09 | 2014-02-26 | 中铁第四勘察设计院集团有限公司 | Integral composite reversed filtering layer |
| CN203834512U (en) * | 2014-05-06 | 2014-09-17 | 昆明学院 | Combined type gravity retaining wall |
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Inventor after: Yang Yanshuang Inventor after: Tao Limei Inventor after: Zhang Fan Inventor after: Hu Qizhi Inventor before: Yang Yanshuang Inventor before: Zhang Fan Inventor before: Hu Qizhi |
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Granted publication date: 20170308 Termination date: 20190615 |