CN108978682A - A kind of construction method of road slope active protecting net system - Google Patents
A kind of construction method of road slope active protecting net system Download PDFInfo
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- CN108978682A CN108978682A CN201810702253.1A CN201810702253A CN108978682A CN 108978682 A CN108978682 A CN 108978682A CN 201810702253 A CN201810702253 A CN 201810702253A CN 108978682 A CN108978682 A CN 108978682A
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- side slope
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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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- 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
- E02D17/202—Securing of slopes or inclines with flexible securing means
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The present invention provides a kind of construction method of road slope active protecting net system, including modifies slope surface, determine hole site, drilling, installation anchor pole, installation supporting rope, installation grid, tie up support netting dative aperture plate, install steel rope net.Using technical solution provided by the invention, using support netting, steel rope net combines the slope protection system that the road slope guard system of composition is formed instead of traditional concreting with anchor pole, reduce production and construction cost, and key protection is carried out to the intensive or regional area with avalanche danger of Rock Joints Surrounding development in road slope, these local danger regions are made to pass through support netting, steel rope net joins together with anchor pole and the metastable region of country rock in road slope, reduce falling rocks, the probability that slungshot and avalanche occur, make guard system that there is good thermal stability, extend its service life, improve protection effect.
Description
Technical field
The present invention relates to technical field of road construction more particularly to a kind of construction parties of road slope active protecting net system
Method.
Background technique
With the development of economy, the construction of road traffic system is more and more intensive, and the build of highway gradually extends
Many difficulties are brought for the construction of road since mountain area height above sea level, geographical conditions are complicated to the mountain area at edge.With me
For southwest Guizhou Province of state Pingtang County, this county is located in subtropical zone monsoon moist climate region, and the winter is without severe cold, summer without heat, heat
Amount is abundant, and abundant rainfall, frost-free period is long, and the four seasons are more clearly demarcated.17 DEG C of whole county average temperature of the whole year, most hot monthly mean temperature 25.4
DEG C, -7.7 DEG C of Annual lowest climate temperature, 38.1 DEG C of Extreme Maximum Temperature, average annual sunshine time 1316.9 hours, average annual precipitation
1259 millimeters, frost-free period 311 days year, the types of topography is mainly corrosion peak forest trough valley landforms and mountains low-to-middle in height structural erosion, invades
Lose landforms.This geomorphic feature geology thermal stability is poor, massif stable structure gender gap, and road slope part easily occurs and collapses
It collapses, therefore the danger such as weathering off and collapsing must take corresponding technical measures to road roadside in road construction construction
Slope is handled, and in the prior art, concrete is generally made to carry out simple encapsulating processing to road slope, but this construction party
Formula one side needs to consume a large amount of construction material resource, on the other hand, since concrete temperature distortion degree is different, works as environment
When temperature changes, concrete is easy to appear deformation, cracking, so that guard system is damaged, affects protection effect, even
Falling rocks or slungshot is caused to smash the accident of vehicle.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of construction methods of road slope active protecting net system.
The present invention is achieved by the following technical programs.
The present invention provides a kind of construction method of road slope active protecting net system, comprising the following steps:
(1) modify slope surface: road is built on the massif hill-side on landing ground, and the both sides of the road hill-side forms side slope, institute
Side slope surface short transverse is stated as side slope longitudinal direction, the width direction being parallel to the horizontal plane on the side slope surface is horizontal as side slope
To, clear up side slope surface on all float stones；
(2) it determines hole site: selecting several positions as hole site on side slope surface, and all hole location points are carried out
Mark, is ready for the anchor pole with the hole bit number of points equal amount；
(3) it drills: being used according to the sequence low from height according to the length of step (2) anchor pole along side slope is longitudinal
Appropriate depth is crept into along vertically downward direction in each hole site on drilling machine side slope surface, and anchor is obtained at each hole site
Rod aperture；
(4) install anchor pole: within step (2) the anchor pole inserting step (3) bolthole, at the same to bolthole with
Interior insertion Grouting Pipe, injects mortar into bolthole by Grouting Pipe, makes Grouting Pipe evenly by anchor while injecting mortar
It extracts in rod aperture, after mortar fills the gap between full bolthole inner wall and anchor pole and condensation, makes described anchor rod anchored on side
On slope；
(5) supporting rope is installed: arranging several cross-brace ropes along side slope transverse direction, if every cross-brace rope will
The part that dry root anchor pole is exposed to side slope surface links together, and arranges several vertical supporting ropes along side slope longitudinal direction,
Every vertical supporting rope links together the part that several anchor poles are exposed to side slope surface, the cross-brace rope and vertical
Supporting rope interweaves with forming support netting；
(6) grid is installed: being laid with one layer of grid from the low direction of height along side slope surface；
(7) it ties up support netting dative aperture plate: netting dative aperture plate will be supported mutually to overlap junction using iron wire and tied up
Together；
(8) steel rope net is installed: being laid with one layer of steel rope net from the low direction of height along side slope surface, reusing suture rope will
Steel rope net edge and supporting rope selvage along suturing, then using rope card by the both ends of suture rope respectively with cross-brace rope or vertical
Supporting rope links together, and makes the anchor pole, support netting, grid and steel rope net connection composition side slope active protecting net system
System.
Step (1) the finishing slope surface is further comprising the steps of:
Step a: photoface exploision: arranging several borehole holes on side slope surface, using not coupling spaced loading method to each
Explosive is loaded in a borehole hole, long then along bamboo chip first in the bundled explosive for being ф 70 with diameter in bamboo chip bottom when loading explosive
Bundled section diameter is the explosive of ф 32 when spending the direction extended at interval of 0.6m to 0.7m, then bamboo chip and explosive are packed into borehole
Within hole, stem length is blasted the float stone on side slope surface using fuse arming test experiment initiation explosive not less than 1.5m；
Step b: all float stones on side slope surface are removed；
Step c: each solution cavity, fluid bowl and the recessed bank position of corrosion present on side slope slope surface use mortar flag stone or coagulation
Soil carries out embedding benefit, then side slope surface is protruded above position chipping, keeps side slope surface smooth.
The construction method of the road slope active protecting net system further include after carrying out step (2), step (3) it
Before follow the steps below:
Step a: appropriate depth is crept into the side slope using drilling machine in the left and right sides below the hole site, described
The left and right sides obtains supported hole respectively below the site of hole；
Step b: it is inserted into a carbon steel rod into supported hole described in step a, the carbon steel rod is made to be exposed to side slope surface element
Length is divided to be not less than 2 meters；
Step c: the both ends of bamboo springboard are relied on into the carbon steel rod inserted described in step b respectively and are exposed to side slope surface element
Point, so that the carbon steel rod and bamboo springboard is formed drilling machine platform.
Spacing is 3 meters between supported hole described in step a, and the supported hole internal diameter is not less than 42mm, and support hole depth is not
Less than 2m.
It is less than between two holes of arbitrary neighborhood site described in step (2) along the spacing of the side slope surface longitudinal direction
4.5 meters, along the spacing of the side slope surface transverse direction less than 4.5 meters between the site of two holes of arbitrary neighborhood.
Bolthole internal diameter described in step (3) is not less than φ 70mm.
Step (4) and step (5) construction interval time are not less than 3 days.
In step (4), the mortar is to be evenly mixed by the ordinary portland cement that strength grade is 42.5# with water
The ratio of mud be 0.45 to 0.5 cement mortar.
The step (5) can exchange with step (6) construction technology sequence.
Steel rope net described in step (8) be ф 8mm by a plurality of diameter, along the lateral steel cable of side slope lateral arrangement and more
Diameter is ф 8mm, link together composition along the longitudinally arranged vertical steel cable intertexture of side slope, wherein two cross of arbitrary neighborhood
The quadratic mesh specification formed is surrounded to steel cable and adjacent two vertical steel cables are as follows: 30cm × 30cm.
The beneficial effects of the present invention are: technical solution provided by the invention is used, using support netting, steel rope net and anchor
Bar combines the road slope guard system of composition, intensive for Rock Joints Surrounding development in road slope or dangerous with avalanche
Regional area carries out key protection, passes through these local danger regions in support netting, steel rope net and anchor pole and road slope
The metastable region of country rock is joined together, and reduces the probability that falling rocks, slungshot and avalanche occur, due to supporting netting, steel cable
More gap is all had in net, support netting, steel rope net and the anchor pole capacity of heat transmission are strong, when environment temperature changes, have
It carries out spreading heat conducive to road slope guard system, so as to avoid the excessive situation of side slope surface local temperature difference, makes guard system
When the ambient temperature changes, it still is able to play road slope surface effective protective action, extended guard system
Service life, in addition, the raw material drawings such as support netting, steel rope net and anchor pole are extensive, cost of manufacture is cheap, easy for construction.
Detailed description of the invention
Fig. 1 is construction flow chart of the invention.
Specific embodiment
Be described further below technical solution of the present invention, but claimed range be not limited to it is described.
The present invention provides a kind of construction method of road slope active protecting net system, as shown in Figure 1, including following step
It is rapid:
(1) modify slope surface: road is built on the massif hill-side on landing ground, and the both sides of the road hill-side forms side slope, institute
Side slope surface short transverse is stated as side slope longitudinal direction, the width direction being parallel to the horizontal plane on the side slope surface is horizontal as side slope
To, clear up side slope surface on all float stones；
(2) it determines hole site: selecting several positions as hole site on side slope surface, and all hole location points are carried out
Mark, is ready for the anchor pole with the hole bit number of points equal amount；Further, arbitrary neighborhood two described in step (2)
Spacing between a hole site along the side slope surface longitudinal direction is less than 4.5 meters, edge between the site of two holes of arbitrary neighborhood
The side slope surface transverse direction spacing less than 4.5 meters.
(3) it drills: being used according to the sequence low from height according to the length of step (2) anchor pole along side slope is longitudinal
Appropriate depth is crept into along vertically downward direction in each hole site on drilling machine side slope surface, and anchor is obtained at each hole site
Rod aperture；Bolthole internal diameter described in step (3) is not less than φ 70mm.Anchor pole hole depth described in step (3) and the anchor pole are long
The difference of degree is greater than 5-20cm.
(4) install anchor pole: within step (2) the anchor pole inserting step (3) bolthole, at the same to bolthole with
Interior insertion Grouting Pipe, injects mortar into bolthole by Grouting Pipe, makes Grouting Pipe evenly by anchor while injecting mortar
It extracts in rod aperture, after mortar fills the gap between full bolthole inner wall and anchor pole and condensation, makes described anchor rod anchored on side
On slope；Further, step (4) and step (5) construction interval time are not less than 3 days.In step (4), the insertion Grouting Pipe
Spacing is 5cm to 10cm between port and the bolthole bottom.In step (4), it is 42.5# that the mortar, which is by strength grade,
The cement mortar that the ratio of mud made of ordinary portland cement and water evenly mix is 0.45 to 0.5.The road slope is actively
The construction method of protecting net system further includes removing residual within the bolthole before carrying out step (4) described installation anchor pole
The dross and dust stayed.
(5) supporting rope is installed: arranging several cross-brace ropes along side slope transverse direction, if every cross-brace rope will
The part that dry root anchor pole is exposed to side slope surface links together, and arranges several vertical supporting ropes along side slope longitudinal direction,
Every vertical supporting rope links together the part that several anchor poles are exposed to side slope surface, the cross-brace rope and vertical
Supporting rope interweaves with forming support netting；Further, supporting rope diameter described in step (5) is not less than ф 16mm.
(6) grid is installed: being laid with one layer of grid from the low direction of height along side slope surface；
(7) it ties up support netting dative aperture plate: netting dative aperture plate will be supported mutually to overlap junction using iron wire and tied up
Together；Further, the step (5) can exchange with step (6) construction technology sequence.Iron wire described in step (7) it is straight
Diameter is not less than ф 1.2mm, supports netting dative aperture plate to tie up spacing between a little at arbitrary neighborhood two and is less than 1m.
(8) steel rope net is installed: being laid with one layer of steel rope net from the low direction of height along side slope surface, reusing suture rope will
Steel rope net edge and supporting rope selvage along suturing, then using rope card by the both ends of suture rope respectively with cross-brace rope or vertical
Supporting rope links together, and makes the anchor pole, support netting, grid and steel rope net connection composition side slope active protecting net system
System.Further, it is ф 8mm, along the lateral steel cable of side slope lateral arrangement that steel rope net described in step (8), which is by a plurality of diameter,
With a plurality of diameter be ф 8mm, link together composition along the longitudinally arranged vertical steel cable intertexture of side slope, wherein arbitrary neighborhood two
Item transverse direction steel cable and adjacent two vertical steel cables surround the quadratic mesh specification formed are as follows: 30cm × 30cm.
Further, step (1) the finishing slope surface is further comprising the steps of:
Step a: photoface exploision: arranging several borehole holes on side slope surface, using not coupling spaced loading method to each
Explosive is loaded in a borehole hole, long then along bamboo chip first in the bundled explosive for being ф 70 with diameter in bamboo chip bottom when loading explosive
Bundled section diameter is the explosive of ф 32 when spending the direction extended at interval of 0.6m to 0.7m, then bamboo chip and explosive are packed into borehole
Within hole, stem length is blasted the float stone on side slope surface using fuse arming test experiment initiation explosive not less than 1.5m；Into one
Step ground, borehole bore dia ф 90mm described in step a, spacing is 0.8m between two borehole holes of arbitrary neighborhood.
Step b: all float stones on side slope surface are removed；
Step c: each solution cavity, fluid bowl and the recessed bank position of corrosion present on side slope slope surface use mortar flag stone or coagulation
Soil carries out embedding benefit, then side slope surface is protruded above position chipping, keeps side slope surface smooth.
Further, the construction method of the road slope active protecting net system further include after carrying out step (2),
It is followed the steps below before step (3):
Step a: appropriate depth is crept into the side slope using drilling machine in the left and right sides below the hole site, described
The left and right sides obtains supported hole respectively below the site of hole；Spacing is 3 meters between supported hole described in step a, in the supported hole
Diameter is not less than 42mm, and support hole depth is not less than 2m.
Step b: it is inserted into a carbon steel rod into supported hole described in step a, the carbon steel rod is made to be exposed to side slope surface element
Length is divided to be not less than 2 meters；Carbon steel rod length described in step b is greater than 4 meters.
Step c: the both ends of bamboo springboard are relied on into the carbon steel rod inserted described in step b respectively and are exposed to side slope surface element
Point, so that the carbon steel rod and bamboo springboard is formed drilling machine platform.
Using technical solution provided by the invention, the road roadside of composition is combined with anchor pole using support netting, steel rope net
Slope guard system, it is anti-that the regional area intensive or with avalanche danger for Rock Joints Surrounding development in road slope carries out emphasis
Shield makes these local danger regions pass through the metastable region of country rock in support netting, steel rope net and anchor pole and road slope
It joins together, reduces the probability that falling rocks, slungshot and avalanche occur, due to all having more sky in support netting, steel rope net
Gap, support netting, steel rope net and the anchor pole capacity of heat transmission are strong, when environment temperature changes, are conducive to road slope protection system
System carries out spreading heat, so as to avoid the excessive situation of side slope surface local temperature difference, guard system is made to change in environment temperature
When, it still is able to play road slope surface effective protective action, the service life of extended guard system, in addition, branch
The raw material drawings such as support netting, steel rope net and anchor pole are extensive, and cost of manufacture is cheap, easy for construction.
Claims (10)
1. a kind of construction method of road slope active protecting net system, it is characterised in that: the following steps are included:
(1) modify slope surface: road is built on the massif hill-side on landing ground, and the both sides of the road hill-side forms side slope, the side
Slope apparent height direction is longitudinal as side slope, and the width direction being parallel to the horizontal plane on the side slope surface is lateral as side slope,
Clear up all float stones on side slope surface；
(2) it determines hole site: selecting several positions as hole site on side slope surface, and rower is clicked through to all hole locations
Know, is ready for the anchor pole with the hole bit number of points equal amount；
(3) it drills: drilling machine being used according to the length of step (2) anchor pole according to the sequence low from height along side slope is longitudinal
Appropriate depth is crept into along vertically downward direction in each hole site on side slope surface, and anchor pole is obtained at each hole site
Hole；
(4) anchor pole is installed: within step (2) the anchor pole inserting step (3) bolthole, while to bolthole with interpolation
Enter Grouting Pipe, mortar is injected into bolthole by Grouting Pipe, makes Grouting Pipe evenly by bolthole while injecting mortar
Interior extraction makes described anchor rod anchored in side slope after mortar fills the gap between full bolthole inner wall and anchor pole and condensation；
(5) supporting rope is installed: arranging several cross-brace ropes along side slope transverse direction, every cross-brace rope is by several
The part that anchor pole is exposed to side slope surface links together, and arranges several vertical supporting ropes along side slope longitudinal direction, and every
Vertical supporting rope links together the part that several anchor poles are exposed to side slope surface, the cross-brace rope and vertical supporting
Rope, which interweaves, forms support netting；
(6) grid is installed: being laid with one layer of grid from the low direction of height along side slope surface；
(7) it ties up support netting dative aperture plate: netting dative aperture plate will be supported mutually to overlap junction using iron wire and be banded in one
It rises；
(8) steel rope net is installed: being laid with one layer of steel rope net from the low direction of height along side slope surface, reuses suture rope for steel cable
Selvage along and supporting rope selvage along suture, then using rope card by suture rope both ends respectively with cross-brace rope or vertical supporting
Rope links together, and makes the anchor pole, support netting, grid and steel rope net connection composition side slope active protecting net system.
2. a kind of construction method of road slope active protecting net system according to claim 1, it is characterised in that: step
(1) the finishing slope surface is further comprising the steps of:
Step a: photoface exploision: arranging several borehole holes on side slope surface, using not coupling spaced loading method to each big gun
Eyelet loads explosive, first in the bundled explosive for being ф 70 with diameter in bamboo chip bottom when loading explosive, prolongs then along bamboo chip length
Bundled section diameter is the explosive of ф 32 when the direction stretched is at interval of 0.6m to 0.7m, then by bamboo chip and explosive be packed into borehole hole with
Interior, stem length is blasted the float stone on side slope surface using fuse arming test experiment initiation explosive not less than 1.5m；
Step b: all float stones on side slope surface are removed；
Step c: each solution cavity, fluid bowl and the recessed bank position of corrosion present on side slope slope surface using mortar flag stone or concrete into
The embedding benefit of row, then side slope surface is protruded above into position chipping, keep side slope surface smooth.
3. a kind of construction method of road slope active protecting net system according to claim 1, it is characterised in that: described
The construction method of road slope active protecting net system further includes that following step is carried out after carrying out step (2), before step (3)
It is rapid:
Step a: appropriate depth is crept into the side slope using drilling machine in the left and right sides below the hole site, in the hole location
The point lower section left and right sides obtains supported hole respectively；
Step b: it is inserted into a carbon steel rod into supported hole described in step a, so that the carbon steel rod is exposed to side slope surface portion long
Degree is not less than 2 meters；
Step c: relying on the carbon steel rod inserted described in step b for the both ends of bamboo springboard respectively and be exposed to side slope surface portion,
The carbon steel rod and bamboo springboard is set to form drilling machine platform.
4. a kind of construction method of road slope active protecting net system according to claim 3, it is characterised in that: step
Spacing is 3 meters between supported hole described in a, and the supported hole internal diameter is not less than 42mm, and support hole depth is not less than 2m.
5. a kind of construction method of road slope active protecting net system according to claim 1, it is characterised in that: step
(2) spacing between the site of arbitrary neighborhood two described in hole along the side slope surface longitudinal direction is less than 4.5 meters, any phase
Along the spacing of the side slope surface transverse direction less than 4.5 meters between the site of adjacent two holes.
6. a kind of construction method of road slope active protecting net system according to claim 1, it is characterised in that: step
(3) bolthole internal diameter described in is not less than φ 70mm.
7. a kind of construction method of road slope active protecting net system according to claim 1, it is characterised in that: step
(4) it is not less than 3 days with step (5) construction interval time.
8. a kind of construction method of road slope active protecting net system according to claim 1, it is characterised in that: step
(4) in, the mortar is that the ratio of mud made of the ordinary portland cement for being 42.5# as strength grade is evenly mixed with water is
0.45 to 0.5 cement mortar.
9. a kind of construction method of road slope active protecting net system according to claim 1, it is characterised in that: described
Step (5) can be exchanged with step (6) construction technology sequence.
10. a kind of construction method of road slope active protecting net system according to claim 1, it is characterised in that: step
Suddenly steel rope net described in (8) be by a plurality of diameter ф 8mm, along side slope lateral arrangement lateral steel cable and a plurality of diameter be ф
8mm, link together composition along the longitudinally arranged vertical steel cable intertexture of side slope, wherein arbitrary neighborhood two lateral steel cables and phase
Adjacent two vertical steel cables surround the quadratic mesh specification formed are as follows: 30cm × 30cm.
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| CN109944260A (en) * | 2019-05-06 | 2019-06-28 | 重庆建工市政交通工程有限责任公司 | Counter-slope system and its excavation method are protected close to existing railway high slope active network |
| CN110258555A (en) * | 2019-06-25 | 2019-09-20 | 重庆科技学院 | Hollow grouting anchor and side slope protective screen construction method of installation |
| CN110578333A (en) * | 2019-08-12 | 2019-12-17 | 安徽国祯环卫科技有限公司 | temporary slope supporting device for garbage pile excavation and construction method thereof |
| CN110820771A (en) * | 2019-11-20 | 2020-02-21 | 四川省西南大地工程物探有限公司 | Structure and construction method of mountain side slope protective net |
| CN110820771B (en) * | 2019-11-20 | 2021-05-11 | 四川省西南大地工程物探有限公司 | Structure and construction method of mountain side slope protective net |
| CN110904981A (en) * | 2019-12-02 | 2020-03-24 | 贵州建工集团第一建筑工程有限责任公司 | Mountain road rock slope SNS flexible network protection system |
| CN111733837A (en) * | 2020-07-30 | 2020-10-02 | 四川港航建设工程有限公司 | Rock slope filling, sealing, protecting and constructing method |
| CN112482406A (en) * | 2020-11-30 | 2021-03-12 | 王杰 | Anchor rod supporting device for slope support |
| CN113482020A (en) * | 2021-08-09 | 2021-10-08 | 陕西中祥基础工程有限责任公司 | Construction method of flexible protective net for complex environment side slope in tourist attraction |
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Application publication date: 20181211 |