CN108385701A - Road Protection of Expansive Soil structure and its construction method - Google Patents
Road Protection of Expansive Soil structure and its construction method Download PDFInfo
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- CN108385701A CN108385701A CN201810212272.6A CN201810212272A CN108385701A CN 108385701 A CN108385701 A CN 108385701A CN 201810212272 A CN201810212272 A CN 201810212272A CN 108385701 A CN108385701 A CN 108385701A
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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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Abstract
The present invention provides a kind of construction methods of road Protection of Expansive Soil structure, include the following steps：The clear table of side slope, top of the slope intercepting ditch build by laying bricks or stones, side slope earth excavation, watering moisturizing, impervious barrier is laid with, guide drainage facility is built by laying bricks or stones, metalling layings, slope protection construction, slope stability monitor；Safeguard structure includes：Impervious barrier, metalling, grey bank protection layer, level-one green protecting slope layer, water guide facility, pumping equipment.The present invention is combined using rigid protection with flexible support, easy for construction, process is simple, is also added to environmentally protective construction concept while ensureing slope stability, is met modern construction development trend.
Description
Technical field
The invention belongs to swelling weak rock side slope protection technical fields, and in particular to road Protection of Expansive Soil structure and its
Construction method.
Background technology
Three big characteristics of swelled ground：Fissurity, dilatancy and overconsolidation, thus, it is frequently encountered slope instability, landslide
Equal geological disasters.
Technical measures in engineering for execavated rockmass punishment can substantially be divided into rigid retaining structure and point supporting system
Two major classes.
Rigid retaining structure refers to being aided with based on masonry structure (Gravity Retaining Wall, friction pile and slabstone facing wall etc.)
The processing scheme that other necessary integrated treatment measures are combined.It is current most common Treatment Methods.Its operation principle is
It is answered with body of masonry dead weight to resist the overconsolidation that (balance) loses the side slope body of whole machine balancing and its generated in digging process
Power discharges.Rigid retaining structure does not allow to be deformed by the retaining structure soil body, and under the action of drying and watering cycle, water, side slope
Soil body certainty drying shrinkage bulking.When cannot be discharged when the dilatancy of the soil body is larger, will produce the prodigious bulbs of pressure makes just
Property retaining structure destroy.
Point supporting system refers to being aided with other necessary integrated treatment measure phases based on chemical modifying, geotextile
In conjunction with processing scheme.The characteristics of flexible retaining wall, which is it not only, can bear soil pressure but also the soil body is allowed to generate certain breathing change
Shape, to absorb the expansive force that slope soil stress release caused by overconsolidation and change of moisture content generate.But flexible shoring knot
The general working procedure of structure is complicated, construction speed is slow, is affected by rainwater weather.
Invention content
In order to overcome above-mentioned construction problem, the present invention to provide a kind of construction method of swelling weak rock slope treatment,
It is combined with flexible support using rigid protection, it is easy for construction, process is simple, it is also added to while ensureing slope stability
Environmentally protective construction concept meets modern construction development trend.
The present invention is achieved through the following technical solutions.
The construction method of road Protection of Expansive Soil structure, it is characterised in that include the following steps：
A, the clear table of side slope：Surveying setting-out carries out clear table to boundary of works area；
B, top of the slope intercepting ditch is built by laying bricks or stones：Before slope excavating, according to design requirement, builds top of the slope intercepting ditch by laying bricks or stones, side slope is avoided to be molded
After there is wash away phenomenon；In conventional construction, the trapezoid cross section ditch of 60cm × 180cm × 60cm can be used in top of the slope intercepting ditch；
C, side slope earth excavation：As the height ＞ 6m of side slope, two level slope is taken, it is flat to excavate level-one side slope, level-one side slope
Platform and two level side slope；As height≤6m of side slope, level-one slope is taken, level-one side slope is only excavated；The step is according to the height of side slope
Degree takes different digging modes, and the overall stability of side slope can be improved；In conventional construction, in slope height 0 when two level slope
Level-one side slope is excavated within the scope of~6m, and the level-one plain stage of slope of 1.5~2.5m wide is excavated in the position of side slope slope height 6m, in
The range of slope height ＞ 6m excavates two level side slope；
D, watering moisturizing：It sprinkles water to level-one side slope, two level side slope and level-one plain stage of slope after slope excavating molding, controls side
Slope soil water content is to make soil within natural moisture content ± 1% to ensure that the excavation face soil body will not generate cup shake because of dehydration
Body strength reduction, phenomena such as causing Slope Sliding；
E, impervious barrier is laid with：It is laid with impervious barrier in level-one side slope, two level side slope and level-one plain stage of slope surface, to prevent rain
Water penetrates into native side slope；
F, guide drainage facility is built by laying bricks or stones：Slope foot seepage ditch is built by laying bricks or stones prior to level-one side slope bottom end, and in slope foot seepage ditch bottom edge
It is longitudinal to be laid with water-permeable pipe, then along slope foot seepage ditch no more than the drainpipe that laterally setting is connect with water-permeable pipe together at 40m, draining
Pipe can access rainwater inspection well or inlet for stom water nearby；Then in level-one side slope bottom end slope foot intercepting ditch is built by laying bricks or stones and in level-one side slope
Platform builds platform intercepting ditch by laying bricks or stones；
G, metalling is laid with：It is laid with metalling in the slope surface of level-one side slope, with the soil body near white-out crevice water and absorption
Expansion energy；In conventional construction, the laying depth of metalling is 20cm；
H, slope protection construction：First grey bank protection layer, level-one green protecting slope are built by laying bricks or stones on metalling successively along level-one side slope surface
Layer, then builds two level green protecting slope layer by laying bricks or stones in two level side slope surface；It is described while build grey bank protection layer and build by laying bricks or stones, extend transversely through ash
Color bank protection layer installs tapping pipe；Metalling is wrapped up and be embedded to the water inlet end geotextiles of the tapping pipe, is contacted with tapping pipe
Rubble, which changes, fills out Guamishi, and tapping pipe is arranged using the grid of 2m × 2m；In conventional construction, grey bank protection layer is built by laying bricks or stones in level-one side slope
In the range of highly 0~3m, level-one green protecting slope layer is built by laying bricks or stones in the range of 3~6m of level-one slope height；
I, slope stability monitors；
It should be pointed out that although above-mentioned steps d, e, f, g, h, i provide side slope earth excavation rear stage side slope, two level
The construction method of side slope and level-one plain stage of slope safeguard structure, that is, when taking two level slope, the construction method of slope protection structure
As described in step d, e, f, g, h, i；And when using level-one bank protection, although only having excavated level-one side slope, level-one side slope protection knot
The construction method of structure is same (to save two level side slope and level-one side slope in step d, e, f, g, h, i as described in step d, e, f, g, h, i
The construction details of platform).
As optimal technical scheme, in the step c, level-one side slope and two level side slope are 1 by slope ratio:3, it takes from upper
Under and, it is segmented the method for being classified rapid construction, every section of construction distance≤40m, excavation face reserves the protective layer of 1.5m~2.0m.
As optimal technical scheme, in the step e, impervious barrier is thickness 1mm, weight 200g/m2Two cloth, one film.
As optimal technical scheme, the slope foot intercepting ditch, top of the slope intercepting ditch, platform intercepting ditch, grey bank protection layer are adopted
MU30 slabstones are grouted with M10 to build by laying bricks or stones；It is paved with rubble in the slope foot seepage ditch.
As optimal technical scheme, in the step f, control water-permeable pipe longitudinal slope should be not less than 1% when being laid with water-permeable pipe.
As optimal technical scheme, in the step h, the thickness of the grey bank protection layer is 0.8m, level-one green protecting slope
The thickness of layer is 0.8m, the thickness of two level green protecting slope layer is 0.4m.
As optimal technical scheme, in the step h, level-one green protecting slope layer and two level green protecting slope layer pass through following sides
Formula is built by laying bricks or stones：Pile plant biological bag is installed from the bottom to top, spray kind grass-seed, watering maintenance to grass-seed grow green seedling i.e. in time after installation is complete
It can.
As optimal technical scheme, the specific method of the step i slope stabilities monitoring is：In top of the slope, level-one side slope
Platform, slope foot every 20m arrange a monitoring point, monitoring project include top of the slope, level-one plain stage of slope, slope foot level vertical position
It moves, surface cracks, top of the slope constructs composition deformation etc..
Road Protection of Expansive Soil structure, the side slope include level-one side slope, which is characterized in that the safeguard structure packet
It includes：Impervious barrier, metalling, grey bank protection layer, level-one green protecting slope layer, water guide facility, pumping equipment；Wherein,
The impervious barrier covers entire level-one side slope；
The metalling is laid on along level-one side slope surface above impervious barrier；
The grey bank protection layer, the level-one green protecting slope layer are layed in broken successively from bottom to up along the slope surface of level-one side slope
In rock layers；
The water guide facility include build by laying bricks or stones the slope foot seepage ditch of slope foot, the water-permeable pipe being laid with along slope foot seepage ditch bottom,
The tapping pipe for extending transversely through grey bank protection layer, the drainpipe for being laterally arranged along slope foot seepage ditch and being connect with water-permeable pipe；
The pumping equipment include build by laying bricks or stones slope foot slope foot intercepting ditch, build top of the slope intercepting ditch in top of the slope by laying bricks or stones.
As optimal technical scheme, the side slope further includes level-one plain stage of slope, excavates in level-one side slope and two level side slope
Between two level side slope；The safeguard structure further includes two level green protecting slope layer, platform intercepting ditch；
The impervious barrier also covers entire level-one plain stage of slope, two level side slope；
The two level green protecting slope layer is laid on above impervious barrier successively from bottom to up along the slope surface of two level side slope；
The platform intercepting ditch is built by laying bricks or stones in level-one plain stage of slope.
Compared with prior art, the invention has the advantages that：
1, patent of the present invention plays good protective action to swelling weak rock side slope, solves swelling weak rock side well
The problem of slope unstability sliding；
2, patent working construction input of the present invention is small, easy for construction rapid；
3, patent combining with green environmental protection construction theory of the present invention meets the trend of modern infrastructure construction.
Description of the drawings
The schematic diagram of road Protection of Expansive Soil structure and construction method of the present invention when Fig. 1 is two level slope；
The schematic diagram of road Protection of Expansive Soil structure and construction method of the present invention when Fig. 2 is level-one slope；
The meaning respectively marked in above-mentioned figure is：
1- impervious barriers；
2- metallings；
3- grey bank protection layers；
4- level-one green protecting slope layers；
5- two level green protecting slope layers；
6- water guide facilities, 61- slope foot seepage ditch, 62- water-permeable pipes, 63- tapping pipes, 64- drainpipes；
7- pumping equipments, 71- slope foot intercepting ditch, 72- top of the slope intercepting ditch, 73- platform intercepting ditch；
The road surfaces 8-；
9- side slopes, 91- level-one side slopes, 92- level-one plain stage of slopes, 93- two level side slopes.
Specific implementation mode
The present invention is described further With reference to embodiment, it is pointed out that following implementation is only
It is the indicative explaination done to the present invention in the form of enumerating, but protection scope of the present invention is not limited to that, Suo Youben
The technical staff in field each falls within protection scope of the present invention with the equivalent replacement that the spirit of the present invention is the present invention.
Embodiment 1
The construction method of road Protection of Expansive Soil structure, please refers to Fig.1, Fig. 2, includes the following steps：
A, the clear table of side slope：Surveying setting-out carries out clear table to boundary of works area；
B, top of the slope intercepting ditch is built by laying bricks or stones：Before slope excavating, according to design requirement, build top of the slope intercepting ditch 72 by laying bricks or stones, avoid side slope at
Occurs wash away phenomenon after type；
C, side slope earth excavation：Referring to Fig. 1, as the height ＞ 6m of side slope 9, two level slope is taken, excavates level-one side slope
91, level-one plain stage of slope 92 and two level side slope 93；Referring to Fig. 2, as height≤6m of side slope 9, level-one slope is taken, is only excavated
Level-one side slope 91；
D, watering moisturizing：It sprinkles water to level-one side slope 91, two level side slope 93 and level-one plain stage of slope 92 after slope excavating molding,
It is within natural moisture content ± 1% to control side slope soil water content；
E, impervious barrier is laid with：It is laid with impervious barrier 1 in level-one side slope 91, two level side slope 93 and 92 surface of level-one plain stage of slope；
F, guide drainage facility is built by laying bricks or stones：Slope foot seepage ditch 61 is built by laying bricks or stones prior to 91 bottom end of level-one side slope, and in slope foot seepage ditch 61
Bottom is laid with water-permeable pipe 62 along longitudinal direction, then along slope foot seepage ditch 61 no more than laterally setting is connect with water-permeable pipe 62 together at 40m
Drainpipe 64；Then it builds slope foot intercepting ditch 71 by laying bricks or stones in 91 bottom end of level-one side slope and builds platform by laying bricks or stones in level-one plain stage of slope 92 and intercept water
Ditch 73；
G, metalling is laid with：It is laid with metalling 2 in the slope surface of level-one side slope 91；
H, slope protection construction：First grey bank protection layer 3, level-one green are built by laying bricks or stones on metalling 2 successively along 91 surface of level-one side slope
Then bank protection layer 4 builds two level green protecting slope layer 5 by laying bricks or stones in 93 surface of two level side slope；While building grey bank protection layer 3 and build by laying bricks or stones, laterally
Tapping pipe 63 is installed through grey bank protection layer 3；Metalling 2 is wrapped up and be embedded to the water inlet end geotextiles of tapping pipe 63, with sluicing
The rubble that pipe 63 contacts, which changes, fills out Guamishi, and tapping pipe 63 is arranged using the grid of 2m × 2m；
I, slope stability monitors.
Embodiment 2
The construction method of road Protection of Expansive Soil structure, as height≤6m of side slope, referring to Fig. 2, including such as
Lower step：
A, the clear table of side slope：Surveying setting-out carries out clear table to boundary of works area；
B, top of the slope intercepting ditch is built by laying bricks or stones：Before slope excavating, according to design requirement, it is 60cm × 180cm × 60cm to build section by laying bricks or stones
Trapezoidal top of the slope intercepting ditch 72；
C, side slope earth excavation：Level-one slope is taken, level-one side slope 91 is only excavated；Level-one side slope 91 is 1 by slope ratio:3, it adopts
Take from top to bottom, the method for segmentation classification rapid construction, every section of construction distance≤40m, excavation face reserves the guarantor of 1.5m~2.0m
Sheath；Covering waterproof cloth, waterproof cloth answer horizontal cross to overlap in time later, and upper layer cloth depresses layer cloth, and the lap of splice is no less than
50cm, slope foot should fasten waterproof cloth with upper and lower gutter edge overlap joint up and down, and slope surface lap-joint should be fastened using earth bag；In addition,
In digging process, large-scale excavation, roll or hanging device should not in upper level side slope or riding track operation walk；
D, watering moisturizing：After slope excavating molding, sprinkled water to level-one side slope 91 using large-scale shower, control side slope soil is aqueous
Amount is within natural moisture content ± 1%；
E, impervious barrier is laid with：In 91 surface of level-one side slope be laid with impervious barrier 1, impervious barrier 1 should will include slope foot intercepting ditch 71,
91 all standing of level-one side slope of top of the slope intercepting ditch 72；Impervious barrier 1 selects thick 1mm, weight 200g/m2Two cloth, one film；
F, guide drainage facility is built by laying bricks or stones：Slope foot seepage ditch 61 is built by laying bricks or stones prior to 91 bottom end of level-one side slope, and in slope foot seepage ditch 61
Bottom is laid with water-permeable pipe 62 along longitudinal direction, and 62 longitudinal slope of control water-permeable pipe should be not less than 1%；It is not more than 40m along slope foot seepage ditch 61 again
Place's drainpipe 64 that laterally setting is connect with water-permeable pipe 62 together, the rainwater inspection well or inlet for stom water of the access of drainpipe 64 nearby；
Then slope foot intercepting ditch 71 is built by laying bricks or stones in 91 bottom end of level-one side slope；
G, metalling is laid with：It is laid with the metalling 2 of 20cm thickness in the slope surface of level-one side slope 91；
H, slope protection construction：First the grey bank protection that thickness is 0.8m is built by laying bricks or stones on metalling 2 successively along 91 surface of level-one side slope
Layer 3, the level-one green protecting slope layer 4 that thickness is 0.8m；While grey bank protection layer 3 is built by laying bricks or stones, the peace of grey bank protection layer 3 is extended transversely through
Fill tapping pipe 63；Metalling 2 is wrapped up and be embedded to the water inlet end geotextiles of tapping pipe 63, and the rubble contacted with tapping pipe 63, which changes, to be filled out
Guamishi, tapping pipe 63 are arranged using the grid of 2m × 2m；
I, slope stability monitors：A monitoring point is arranged every 20m, monitoring project includes top of the slope, slope in top of the slope, slope foot
The vertical displacement of foot level, surface cracks, top of the slope construct composition deformation etc.；During slope project During Initial Stage Construction and excavation, monitoring is suitable
Once a day；Excavation is completed to during slope protection engineering construction is completed to be completed 1 month once a week；It is completed 1 month to half a year
Monthly；It is completed half a year to 2 years 4~6 times；According to geological environment complexity, periphery construction of structures, the deformation of pipeline side slope
Sensitivity, weather conditions and monitoring data adjustment monitoring time and frequency；It should reinforce monitoring when there is dangerous situation；
In the present embodiment, it is the pvc pipe of 160mm that water-permeable pipe 62, which selects outer diameter,；It is 110mm's that drainpipe 64, which selects outer diameter,
Pvc pipe；Tapping pipe 63 selects the UPVC that outer diameter is 75mm to manage；Slope foot intercepting ditch 71, top of the slope intercepting ditch 72, grey bank protection layer 3 are equal
MU30 slabstones are grouted using M10 to build by laying bricks or stones；Level-one green protecting slope layer 4 is built by laying bricks or stones by following manner：Installation pile plants life from the bottom to top
Bag, spray kind grass-seed, watering maintenance to grass-seed grow green seedling in time after installation is complete.
Embodiment 3
The construction method of road Protection of Expansive Soil structure, as the height ＞ 6m of side slope, referring to Fig. 1, including such as
Lower step：
A, the clear table of side slope：Surveying setting-out carries out clear table to boundary of works area；
B, top of the slope intercepting ditch is built by laying bricks or stones：Before slope excavating, according to design requirement, it is 60cm × 180cm × 60cm to build section by laying bricks or stones
Trapezoidal top of the slope intercepting ditch；
C, side slope earth excavation：Two level slope is taken, level-one side slope 91, level-one plain stage of slope 92 and two level side slope are excavated
93；It is 1 that level-one side slope 91 and two level side slope 93, which press slope ratio,:3, take from top to bottom, segmentation classification rapid construction method, often
Section construction distance≤40m, excavation face reserve the protective layer of 1.5m~2.0m；Covering waterproof cloth, waterproof cloth answer level in time later
Transverse lap, upper layer cloth depress layer cloth, and the lap of splice is no less than 50cm, and slope foot should be taken waterproof cloth with upper and lower gutter edge up and down
It connects and fastens, slope surface lap-joint should be fastened using earth bag；In addition, in digging process, large-scale excavation rolls or hanging device is not answered
Operation is walked in upper side slope or riding track；
D, watering moisturizing：After slope excavating molding, using large-scale shower to level-one side slope 91, two level side slope 93 and level-one side
Slope platform 92 is sprinkled water, and control side slope soil water content is within natural moisture content ± 1%；
E, impervious barrier is laid with：It is laid with impervious barrier 1 in level-one side slope 91, two level side slope 93 and 92 surface of level-one plain stage of slope；
Impervious barrier 1 should be by 9 all standing of side slope including slope foot intercepting ditch, platform intercepting ditch, top of the slope intercepting ditch；Impervious barrier 1 selects thickness
1mm, weight 200g/m2Two cloth, one film；
F, guide drainage facility is built by laying bricks or stones：Slope foot seepage ditch 61 is built by laying bricks or stones prior to 91 bottom end of level-one side slope, and in slope foot seepage ditch 61
Bottom is laid with water-permeable pipe 62 along longitudinal direction, and control water-permeable pipe longitudinal slope should be not less than 1%；Again along slope foot seepage ditch 61 no more than at 40m
The drainpipe 64 that laterally setting is connect with water-permeable pipe 62 together, the rainwater inspection well or inlet for stom water of the access of drainpipe 64 nearby；So
Slope foot intercepting ditch 71 is built by laying bricks or stones in 91 bottom end of level-one side slope and build platform intercepting ditch 73 by laying bricks or stones in level-one plain stage of slope 92 afterwards；
G, metalling is laid with：It is laid with the metalling 2 of 20cm thickness in the slope surface of level-one side slope 91；
H, slope protection construction：First the grey bank protection that thickness is 0.8m is built by laying bricks or stones on metalling 2 successively along 91 surface of level-one side slope
Then layer 3, the level-one green protecting slope layer 4 that thickness is 0.8m build the two level green that thickness is 0.4m by laying bricks or stones in 93 surface of two level side slope
Bank protection layer 5；While grey bank protection layer 3 is built by laying bricks or stones, extends transversely through grey bank protection layer 3 and tapping pipe 63 is installed；Tapping pipe 63 into
Metalling 2 is wrapped up and be embedded to water end (W.E.) geotextiles, and the rubble contacted with tapping pipe 63, which changes, fills out Guamishi, and the use of tapping pipe 63 2m ×
The grid of 2m is arranged；
I, slope stability monitors：In top of the slope, level-one plain stage of slope 92, slope foot a monitoring point, monitoring are arranged every 20m
Project includes top of the slope, level-one plain stage of slope 92, the vertical displacement of slope foot level, surface cracks, and top of the slope constructs composition deformation etc.；Side slope
During engineering construction initial stage and excavation, monitoring is preferably once a day；Excavation is completed to slope protection engineering construction and completes to be completed 1 month
Period is once a week；Be completed 1 month to half a year monthly；It is completed half a year to 2 years 4~6 times；According to geological environment complexity journey
Degree, periphery construction of structures, the sensitivity of pipeline side slope deformation, weather conditions and monitoring data adjustment monitoring time and frequency
Rate；It should reinforce monitoring when there is dangerous situation；
In the present embodiment, it is the pvc pipe of 160mm that water-permeable pipe 62, which selects outer diameter,；It is 110mm's that drainpipe 64, which selects outer diameter,
Pvc pipe；Tapping pipe 63 selects the UPVC that outer diameter is 75mm to manage；Slope foot intercepting ditch 71, top of the slope intercepting ditch 72, grey bank protection layer 3 are equal
MU30 slabstones are grouted using M10 to build by laying bricks or stones；Level-one green protecting slope layer 4, two level green protecting slope layer 5 are built by laying bricks or stones by following manner：Under
Supreme installation pile plant biological bag, spray kind grass-seed, watering maintenance to grass-seed grow green seedling in time after installation is complete.
Embodiment 4
Road Protection of Expansive Soil structure, as shown in Fig. 2, side slope 9 includes level-one side slope 91, safeguard structure includes：It is anti-
Infiltration layer 1, metalling 2, grey bank protection layer 3, level-one green protecting slope layer 4, water guide facility 6, pumping equipment 7；Wherein,
Impervious barrier 1 covers entire level-one side slope 91；
Metalling 2 is laid on 1 top of impervious barrier along 91 slope surface of level-one side slope；
Grey bank protection layer 3, level-one green protecting slope layer 4 are layed in metalling successively from bottom to up along the slope surface of level-one side slope 91
On 2；
Water guide facility 6 includes building slope foot seepage ditch 61 in slope foot, the water-permeable pipe that is laid with along 61 bottom of slope foot seepage ditch by laying bricks or stones
62, the tapping pipe 63 for extending transversely through grey bank protection layer 3, the draining for being laterally arranged along slope foot seepage ditch 61 and being connect with water-permeable pipe 62
Pipe 64；
Pumping equipment 7 include build by laying bricks or stones slope foot slope foot intercepting ditch 71, build top of the slope intercepting ditch 72 in top of the slope by laying bricks or stones.
Embodiment 5
In order to improve the stability of side slope and slope protection structure, different excavation sides can be taken according to the height of side slope
Formula, to improve the overall stability of side slope；In general, slope height be more than 6m when need to take two level slope, to excavate level-one side slope,
Two level side slope and the level-one plain stage of slope between level-one side slope and two level side slope；Therefore, on the basis of embodiment 4, such as
Shown in Fig. 1, side slope 9 further includes two level side slope 93, excavates the level-one plain stage of slope between level-one side slope 91 and two level side slope 93
92；Impervious barrier 1 also covers entire level-one plain stage of slope 91, two level side slope 93；Two level green protecting slope layer 5 is along 93 slope surface of two level side slope
It is laid on 1 top of impervious barrier successively from bottom to up；Platform intercepting ditch 73 is built by laying bricks or stones in level-one plain stage of slope 92.
Claims (10)
1. the construction method of road Protection of Expansive Soil structure, it is characterised in that include the following steps：
A, the clear table of side slope；
B, top of the slope intercepting ditch is built by laying bricks or stones；
C, side slope earth excavation：As the height ＞ 6m of side slope, two level slope is taken, it is flat to excavate level-one side slope (91), level-one side slope
Platform (92) and two level side slope (93)；As height≤6m of side slope, level-one slope is taken, level-one side slope (91) is only excavated；
D, watering moisturizing：Level-one side slope (91), two level side slope (93) and level-one plain stage of slope (92) are spilt after slope excavating molding
Water, control side slope soil water content are within natural moisture content ± 1%；
E, impervious barrier is laid with：It is laid with impervious barrier in level-one side slope (91), two level side slope (93) and level-one plain stage of slope (92) surface
(1)；
F, guide drainage facility is built by laying bricks or stones：Slope foot seepage ditch (61) is built by laying bricks or stones prior to level-one side slope (91) bottom end, and in slope foot seepage ditch
(61) bottom is laid with water-permeable pipe (62) along longitudinal direction, then along slope foot seepage ditch (61) no more than the places 40m laterally one of setting with it is permeable
Manage the drainpipe (64) of (62) connection；Then it builds slope foot intercepting ditch (71) by laying bricks or stones in level-one side slope (91) bottom end and is put down in level-one side slope
Platform (92) builds platform intercepting ditch (73) by laying bricks or stones；
G, metalling is laid with：It is laid with metalling (2) in the slope surface of level-one side slope (91)；
H, slope protection construction：It is green first grey bank protection layer (3), level-one to be built by laying bricks or stones on metalling (2) successively along level-one side slope (91) surface
Color bank protection layer (4) then builds two level green protecting slope layer (5) by laying bricks or stones in two level side slope (93) surface；It is described to build grey bank protection layer (3) block
While building, grey bank protection layer (3) installation tapping pipe (63) is extended transversely through；The geotechnological cloth bag of the water inlet end of the tapping pipe (63)
Metalling (2) is wrapped up in and is embedded to, the rubble contacted with tapping pipe (63), which changes, fills out Guamishi, and tapping pipe (63) uses the grid of 2m × 2m
Arrangement；
I, slope stability monitors.
2. the construction method of road Protection of Expansive Soil structure as described in claim 1, it is characterised in that the step c
In, level-one side slope (91) and two level side slope (93) they are 1 by slope ratio:3, take from top to bottom, segmentation classification rapid construction side
Method, every section of construction distance≤40m, excavation face reserve the protective layer of 1.5m~2.0m.
3. the construction method of road Protection of Expansive Soil structure as described in claim 1, it is characterised in that the step e
In, impervious barrier (1) is thickness 1mm, weight 200g/m2Two cloth, one film.
4. the construction method of road Protection of Expansive Soil structure as described in claim 1, it is characterised in that the slope foot is cut
Ditch (71), top of the slope intercepting ditch (72), platform intercepting ditch (73), grey bank protection layer (3) are all made of M10 and grout MU30 piece barnacles
It builds；It is paved with rubble in the slope foot seepage ditch (61).
5. the construction method of road Protection of Expansive Soil structure as described in claim 1, it is characterised in that the step f
In, control water-permeable pipe longitudinal slope is not less than 1% when being laid with water-permeable pipe (62).
6. the construction method of road Protection of Expansive Soil structure as described in claim 1, it is characterised in that the step h
In, the thickness of the grey bank protection layer (3) is 0.8m, and the thickness of level-one green protecting slope layer (4) is 0.8m, two level green protecting slope layer
(5) thickness is 0.4m.
7. the construction method of road Protection of Expansive Soil structure as described in claim 1 or 6, it is characterised in that the step
In h, level-one green protecting slope layer (4) and two level green protecting slope layer (5) are built by laying bricks or stones by following manner：Installation pile plants life from the bottom to top
Bag, spray kind grass-seed, watering maintenance to grass-seed grow green seedling in time after installation is complete.
8. the construction method of road Protection of Expansive Soil structure as described in claim 1, it is characterised in that the sides the step i
Slope stability monitoring specific method be：In top of the slope, level-one plain stage of slope (92), slope foot a monitoring point, prison are arranged every 20m
Survey project includes top of the slope, level-one plain stage of slope (92), the vertical displacement of slope foot level, surface cracks, and top of the slope constructs composition deformation etc..
9. road Protection of Expansive Soil structure, the side slope (9) includes level-one side slope (91), which is characterized in that the protection
Structure includes：Impervious barrier (1), metalling (2), grey bank protection layer (3), level-one green protecting slope layer (4), water guide facility (6), draining
Facility (7)；Wherein,
The impervious barrier (1) covers entire level-one side slope (91)；
The metalling (2) is laid on along level-one side slope (91) slope surface above impervious barrier (1)；
The grey bank protection layer (3), the level-one green protecting slope layer (4) spread successively from bottom to up along the slope surface of level-one side slope (91)
On metalling (2)；
The water guide facility (6) includes building by laying bricks or stones to be laid in the slope foot seepage ditch (61) of slope foot, along slope foot seepage ditch (61) bottom
Water-permeable pipe (62), the tapping pipe (63) for extending transversely through grey bank protection layer (3), along slope foot seepage ditch (61) laterally setting and with it is permeable
Manage the drainpipe (64) of (62) connection；
The pumping equipment (7) include build by laying bricks or stones slope foot slope foot intercepting ditch (71), build top of the slope intercepting ditch (72) in top of the slope by laying bricks or stones.
10. road Protection of Expansive Soil structure as claimed in claim 9, which is characterized in that the side slope (9) further includes two
Grade side slope (93) excavates the level-one plain stage of slope (92) between level-one side slope (91) and two level side slope (93)；The protection knot
Structure further includes two level green protecting slope layer (5), platform intercepting ditch (73)；
The impervious barrier (1) also covers entire level-one plain stage of slope (91), two level side slope (93)；
The two level green protecting slope layer (5) is laid on along two level side slope (93) slope surface above impervious barrier (1) successively from bottom to up；
The platform intercepting ditch (73) is built by laying bricks or stones in level-one plain stage of slope (92).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810212272.6A CN108385701A (en) | 2018-03-14 | 2018-03-14 | Road Protection of Expansive Soil structure and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810212272.6A CN108385701A (en) | 2018-03-14 | 2018-03-14 | Road Protection of Expansive Soil structure and its construction method |
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| Publication Number | Publication Date |
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| CN108385701A true CN108385701A (en) | 2018-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810212272.6A Pending CN108385701A (en) | 2018-03-14 | 2018-03-14 | Road Protection of Expansive Soil structure and its construction method |
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| CN109930613A (en) * | 2019-04-23 | 2019-06-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Construction method and structure of drainage system of permeable roadbed slope |
| CN111576451A (en) * | 2020-06-11 | 2020-08-25 | 长沙理工大学 | Expansive soil cutting slope prevention and control structure and construction method thereof |
| CN112627203A (en) * | 2020-12-25 | 2021-04-09 | 南昌航空大学 | Construction method of ecological protection structure of soil slope |
| CN113846659A (en) * | 2021-11-10 | 2021-12-28 | 中国电建集团成都勘测设计研究院有限公司 | Method for treating expansive soil slope and application thereof |
| CN114875936A (en) * | 2022-05-30 | 2022-08-09 | 中国二十冶集团有限公司 | Construction method for drainage and protection of high cut slope side ditch |
| CN115323862A (en) * | 2022-08-24 | 2022-11-11 | 中国十七冶集团有限公司 | Drainage construction process for slope tops around anti-infiltration foundation pit |
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| CN115323862A (en) * | 2022-08-24 | 2022-11-11 | 中国十七冶集团有限公司 | Drainage construction process for slope tops around anti-infiltration foundation pit |
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Application publication date: 20180810 |