CN107237336B - A kind of intelligent draining antiskid arch ring reinforcement means in stream shape landslide - Google Patents
A kind of intelligent draining antiskid arch ring reinforcement means in stream shape landslide Download PDFInfo
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- CN107237336B CN107237336B CN201710655718.8A CN201710655718A CN107237336B CN 107237336 B CN107237336 B CN 107237336B CN 201710655718 A CN201710655718 A CN 201710655718A CN 107237336 B CN107237336 B CN 107237336B
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- arch ring
- landslide
- pile
- draining
- side wall
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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
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
Abstract
The present invention discloses a kind of intelligent draining antiskid arch ring reinforcement means in stream shape landslide, multiple rows of mini pile is squeezed into the appropriate location on landslide, mini pile is pressed certain radian and is laid in the plane, to which micro combination pile group arch ring be collectively formed with the stratum of side wall, Thrust of Landslide is resisted jointly by the skid resistance of arch ring and the anti-skid power of side wall.In addition a certain proportion of draining hollow pile is set, the water inside gliding mass is discharged by way of drawing water in earth's surface.A certain number of underground level gauges are installed in draining hollow pile, the time drawn water and pump-out are determined according to the level of ground water of actual measurement in real time, realize the intelligent drainage function on landslide.
Description
Technical field
The present invention relates to a kind of intelligent draining antiskid arch ring reinforcement means in stream shape landslide.
Background technology
Stream shape landslide refers generally to be influenced by heavy showers or underground water, in the landslide of stream shape sliding after soil body immersion saturation.
The improvement on such landslide is reinforced, in addition to taking common supporting and retaining system measure to reinforce, by the water in gliding mass, discharge is very in time
Important one side.At present to landslide control design, the method for generally mostly using retaining structure combination drainage measure, cost compared with
It is high；And retaining structure does not give full play to the anti-skid ability of side wall mostly along the linear arrangement in direction vertical with glide direction.
Therefore, a kind of Prevention Technique relatively being suitable for flowing shape landslide need to be explored.
At present in preventing land slide, friction pile is most common Anti-sliding stopping structure.It is slided using friction pile technology governance stream shape
When slope, since stake spacing is larger (generally several meters), the stream shape soil body easily flows away between stake so that friction pile does not have effective ground resistance
Sliding effect.Stream shape landslide can also be reinforced using miniature pile group.The technique that mini pile uses drilling-arrangement of reinforcement-slip casting
Construct, generally arrange it is multiple rows of, by miniature pile group shearing resistance or bending resistance resist Thrust of Landslide.With respect to friction pile
Speech, the spacing of mini pile is opposite to want small, is got well than friction pile effect in terms of outflow stake between the anti-fluid stopping shape soil body.But it is miniature
Pile group is typically designed as the linear perpendicular to glide direction in horizontal layout, only relies on shearing resistance or the bending resistance energy of miniature pile group
Power resists Thrust of Landslide, does not play the anti-skid power of landslide side wall.In addition, in convection current shape landslide control, friction pile or miniature
The retaining structures such as pile group are both needed to combine special subdrainage measure, comprehensive cost high.
Invention content
The technical problem to be solved in the present invention is to provide a kind of intelligent draining antiskid arch ring reinforcement means in stream shape landslide, both
Enough anti-skid power, which can be provided, makes landslide form mechanism, and the water that can be discharged in time in gliding mass, prevents gliding mass immersion saturation from generating stream shape
Sliding, while project cost is reduced, it is very suitable for practicality.
To solve the above problems, the present invention adopts the following technical scheme that：
A kind of intelligent draining antiskid arch ring reinforcement means in stream shape landslide squeezes into multiple rows of mini pile in stream shape landslide, micro-
Type stake is the small-bore bored concrete pile constructed using drilling, strong arrangement of reinforcement, grouting process, compares common friction pile, the stake of miniature pile group
Spacing is smaller, can prevent gliding mass from being flowed out between stake.Micro combination pile group is arranged with certain radian, to which the stratum with side wall is total
With micro combination pile group arch ring is formed, Thrust of Landslide is resisted jointly by the skid resistance of arch ring and the anti-skid power of side wall.In addition it sets
A certain proportion of draining hollow pile is set, the water inside gliding mass is discharged by way of drawing water in earth's surface.Pacify in draining hollow pile
A certain number of underground level gauges are filled, the time drawn water and pump-out are determined according to the level of ground water of actual measurement in real time, realize landslide
Intelligent drainage function.
The present invention drains the design principle that antiskid arch ring is reinforced：
Thrust of Landslide is resisted jointly by the skid resistance of draining antiskid arch ring and the anti-skid power of side wall.
The skid resistance of draining antiskid arch ring is made of two parts, when the shearing resistance between arch ring and sliding surface, first, mini pile
With the shearing resistance of draining hollow pile.
It utilizesCalculate the shearing resistance between arch ring and sliding surface；Wherein, τ
Shearing resistance between arch ring and sliding surface；γ is the severe of arch ring；H is the vertical height of arch ring；AgFor arch ring and sliding surface contact surface
Projected area in the horizontal direction；α is the inclination angle that arch ring position sliding surface is arranged；Internal friction angle between arch ring and sliding surface；C is
Cohesive strength between arch ring and sliding surface.
Utilize τ '=τsAs+τs'As' calculate mini pile and drain the shearing resistance of hollow pile；Wherein, τ ' is mini pile and row
The shearing resistance of water hollow pile；τsFor the shearing strength of mini pile arrangement of reinforcement；AsFor in micro combination pile group all longitudinal reinforcements it is transversal
Area；τs' it is the shearing strength for draining hollow pile；As' it is the cross-sectional area for draining all longitudinal reinforcements of hollow pile.
The anti-skid power T' of unilateral side landslide side wall is calculated by following formula：
Wherein, T is the Thrust of Landslide of arch ring position；L is the width on arch ring position landslide；τ is anti-between arch ring and sliding surface
Shearing；τ ' is the shearing resistance of micro combination pile group；β is the angle of side wall and glide direction；To rub in arch ring and side wall
Wipe angle；Cohesive strengths of the c' between arch ring and side wall；AcFor the contact area of arch ring and side wall.
KT≤2T'+ τ+τ ' need to be met, in formula, K is design safety factor (DSF)；T is the Thrust of Landslide of arch ring position；T' is
The anti-skid power of unilateral side landslide side wall；Shearings resistance of the τ between arch ring and sliding surface；τ ' is mini pile and drains the shearing resistance of hollow pile.
It is worth noting that draining hollow pile use prefabricated pile, can be precast reinforced concrete piles or prefabricated steel-pipe pile etc.,
It needs that a certain number of osculums are arranged on prefabricated pile, loaded filter should be laid by draining the outside of hollow pile.
The quantity for draining hollow pile can be according to the water determination that landslide need to specifically be discharged, such as according to the plentiful of local underground water
Degree, size of local rainfall etc. is comprehensive to be determined, the present invention does not limit the arrangement quantity of draining hollow pile.In addition it removes in arch ring
It, also can be in the landslide a certain number of draining hollow piles of other position dispersed placements so that in landslide in range outside setting drainage pile
Discharge water-dispersed, increase drainage efficiency.
Underground level gauge is arranged in draining hollow pile, monitors level of ground water height in real time.It can be set according to actual conditions
Level of ground water threshold value is triggered alarm if level of ground water height is more than the threshold value of setting, can then be drawn water with manual operation.
Currently on the market there are many underground level gauge, the present invention does not limit the model of underground level gauge.
Drainpipe is placed in draining hollow pile, access can be grasped manually positioned at the pumping equipment on ground when needing precipitation
Make switch to draw water.The present invention does not limit the specification of pumping equipment and drinking-water pipe.
Beneficial effects of the present invention are：(1) the anti-skid power of the skid resistance and landslide side wall good ground that utilize arch ring is common
Thrust of Landslide is resisted, project cost is greatly reduced；(2) drilling machine pore-forming is used when constructing, and small, easy for construction, peace is disturbed to gliding mass
Whole step is high；(3) speed of application is fast, can quick on-slip, especially suitable for come down emergency repair；(4) draining with osculum is set
Hollow pile, by extraction drain hollow pile in water can effective lowering of watertable, prevent the soil body saturation flowing；(5) by setting
It sets underground level gauge and monitors level of ground water height in real time, drained again whenever necessary, realizing a degree of intelligence.
Description of the drawings
Fig. 1 is that the intelligent draining antiskid arch ring in present invention stream shape landslide reinforces sectional view；
Fig. 2 is that the intelligent draining antiskid arch ring in present invention stream shape landslide reinforces elevation；
Fig. 3 is draining hollow pile cross-sectional view；
Fig. 4 is draining hollow pile sectional view.
In figure label for：1- comes down, 2- arch rings, 3- mini piles, and 4- drains hollow pile, 5- pile cap beams, 6-
Osculum, 7- reinforcing bars, 8- concrete, 9- anti-filter geotextiles, 10- drinking-water pipes, 11- water plugs, 12- water-level gauges,
13- monitors system.
Specific implementation mode
The intelligent draining antiskid arch ring reinforcement means as shown in Figure 1, a kind of stream shape comes down, is squeezed into multiple rows of micro- in landslide 1
Type stake 3 and draining hollow pile 4, and couple in stake top connection beam 5, combination pile group is arranged with certain radian, the ground with side wall
Arch ring 2 is collectively formed in layer, and Thrust of Landslide is resisted jointly by the skid resistance of arch ring 2 and the anti-skid power of side wall.Mini pile 3 is using brill
Hole, strong arrangement of reinforcement, grouting process construction；Draining hollow pile 4 uses prefabricated pile, pile body to reserve osculum 6, so that the depth of water in landslide
Enter to drain the hollow part of hollow pile 4, in addition in 4 outside arrangement anti-filter geotextiles 9 of draining hollow pile, prevention osculum 6 blocks.
In the hollow parts setting of draining hollow pile 4 drinking-water pipe 10 and earth's surface is extended to, by water plug 11 to draw water in earth's surface
The water inside gliding mass is discharged in mode.A certain number of underground level gauges 12 are installed in draining hollow pile, utilize underground level gauge
Monitoring system 13 monitors the level of ground water in landslide in real time, and the level of ground water according to actual measurement determines the time drawn water and pump-out,
Realize the intelligent drainage function on landslide.
The present invention drains the design principle that antiskid arch ring is reinforced：
Thrust of Landslide is resisted jointly by the skid resistance of draining antiskid arch ring and the anti-skid power of side wall.
The skid resistance of draining antiskid arch ring is made of two parts, when the shearing resistance between arch ring and sliding surface, first, mini pile
With the shearing resistance of draining hollow pile.
It utilizesCalculate the shearing resistance between arch ring and sliding surface；Wherein, τ
Shearing resistance between arch ring and sliding surface；γ is the severe of arch ring；H is the vertical height of arch ring；AgFor arch ring and sliding surface contact surface
Projected area in the horizontal direction；α is the inclination angle that arch ring position sliding surface is arranged；Internal friction angle between arch ring and sliding surface；C is
Cohesive strength between arch ring and sliding surface.
Utilize τ '=τsAs+τs'As' calculate mini pile and drain the shearing resistance of hollow pile；Wherein, τ ' is mini pile and row
The shearing resistance of water hollow pile；τsFor the shearing strength of mini pile arrangement of reinforcement；AsFor in micro combination pile group all longitudinal reinforcements it is transversal
Area；τs' it is the shearing strength for draining hollow pile；As' it is the cross-sectional area for draining all longitudinal reinforcements of hollow pile.
The anti-skid power T' of unilateral side landslide side wall is calculated by following formula：
Wherein, T is the Thrust of Landslide of arch ring position；L is the width on arch ring position landslide；τ is anti-between arch ring and sliding surface
Shearing；τ ' is the shearing resistance of micro combination pile group；β is the angle of side wall and glide direction；To rub in arch ring and side wall
Wipe angle；Cohesive strengths of the c' between arch ring and side wall；AcFor the contact area of arch ring and side wall.
KT≤2T'+ τ+τ ' need to be met, in formula, K is design safety factor (DSF)；T is the Thrust of Landslide of arch ring position；T' is
The anti-skid power of unilateral side landslide side wall；Shearings resistance of the τ between arch ring and sliding surface；τ ' is mini pile and drains the shearing resistance of hollow pile.
It is worth noting that draining hollow pile use prefabricated pile, can be precast reinforced concrete piles or prefabricated steel-pipe pile etc.,
It needs that a certain number of osculums are arranged on prefabricated pile, loaded filter should be laid by draining the outside of hollow pile.
The quantity for draining hollow pile can be according to the water determination that landslide need to specifically be discharged, such as according to the plentiful of local underground water
Degree, size of local rainfall etc. is comprehensive to be determined, the present invention does not limit the arrangement quantity of draining hollow pile.In addition it removes in arch ring
It, also can be in the landslide a certain number of draining hollow piles of other position dispersed placements so that in landslide in range outside setting drainage pile
Discharge water-dispersed, increase drainage efficiency.
Underground level gauge is arranged in draining hollow pile, monitors level of ground water height in real time.It can be set according to actual conditions
Level of ground water threshold value is triggered alarm if level of ground water height is more than the threshold value of setting, can then be drawn water with manual operation.
Currently on the market there are many underground level gauge, the present invention does not limit the model of underground level gauge.
Drainpipe is placed in draining hollow pile, access can be grasped manually positioned at the pumping equipment on ground when needing precipitation
Make switch to draw water.The present invention does not limit the specification of pumping equipment and drinking-water pipe.
Beneficial effects of the present invention are：(1) the anti-skid power of the skid resistance and landslide side wall good ground that utilize arch ring is common
Thrust of Landslide is resisted, project cost is greatly reduced；(2) drilling machine pore-forming is used when constructing, and small, easy for construction, peace is disturbed to gliding mass
Whole step is high；(3) speed of application is fast, can quick on-slip, especially suitable for come down emergency repair；(4) draining with osculum is set
Hollow pile, by extraction drain hollow pile in water can effective lowering of watertable, prevent the soil body saturation flowing；(5) by setting
It sets underground level gauge and monitors level of ground water height in real time, drained again whenever necessary, realizing a degree of intelligence.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work, should be covered by the protection scope of the present invention.
Claims (3)
- The intelligent draining antiskid arch ring reinforcement means 1. a kind of stream shape comes down, it is characterised in that：A row or more is squeezed on landslide Mini pile, mini pile are pressed radian and are laid in the plane, to which micro combination pile group arch ring be collectively formed with the stratum of side wall, rely on The skid resistance of arch ring and the anti-skid power of side wall resist Thrust of Landslide jointly；In addition setting draining hollow pile, by drawing water in earth's surface Mode the water inside gliding mass is discharged, underground level gauge is installed in draining hollow pile, it is true in real time according to the level of ground water of actual measurement Surely the time drawn water and pump-out realize the intelligent drainage function on landslide；Thrust of Landslide by draining antiskid arch ring skid resistance and side wall Anti-skid power resist jointly；The skid resistance of draining antiskid arch ring is made of two parts, when the shearing resistance between arch ring and sliding surface, one It is the shearing resistance of mini pile and draining hollow pile；Shearing resistance between arch ring and sliding surface is by formulaIt calculates；The shearing resistance of mini pile and draining hollow pile is by formula τ '=τsAs+τs'As' calculate；The anti-skid power T' of unilateral side landslide side wall is by formulaIt calculates；KT≤2T'+ τ+τ ' need to be met； Wherein, shearings resistance of the τ between arch ring and sliding surface；γ is the severe of arch ring；H is the vertical height of arch ring；AgFor arch ring and sliding surface Contact surface projected area in the horizontal direction；α is the inclination angle that arch ring position sliding surface is arranged；Interior friction between arch ring and sliding surface Angle；Cohesive strengths of the c between arch ring and sliding surface；τ ' is mini pile and drains the shearing resistance of hollow pile；τsFor the anti-of mini pile arrangement of reinforcement Cut intensity；AsFor the cross-sectional area of all longitudinal reinforcements in micro combination pile group；τs' it is the shearing strength for draining hollow pile；As' To drain the cross-sectional area of all longitudinal reinforcements of hollow pile；T is the Thrust of Landslide of arch ring position；L is the width on arch ring position landslide Degree；β is the angle of side wall and glide direction；Internal friction angle between arch ring and side wall；Adhesive aggregations of the c' between arch ring and side wall Power；AcFor the contact area of arch ring and side wall；T' is the anti-skid power of unilateral landslide side wall；K is design safety factor (DSF).
- 2. the intelligent draining antiskid arch ring reinforcement means in stream shape landslide as described in claim 1, it is characterised in that：In arch ring Part mini pile is replaced with draining hollow pile, and is placed drinking-water pipe in draining hollow pile and drawn water from earth's surface.
- 3. the intelligent draining antiskid arch ring reinforcement means in stream shape landslide as described in claim 1, it is characterised in that：It is empty in draining Underground level gauge is arranged in heart stake, and time of pumping and pump-out are determined according to the level of ground water height monitored in real time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710655718.8A CN107237336B (en) | 2017-08-02 | 2017-08-02 | A kind of intelligent draining antiskid arch ring reinforcement means in stream shape landslide |
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|---|---|---|---|
| CN201710655718.8A CN107237336B (en) | 2017-08-02 | 2017-08-02 | A kind of intelligent draining antiskid arch ring reinforcement means in stream shape landslide |
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| CN107237336A CN107237336A (en) | 2017-10-10 |
| CN107237336B true CN107237336B (en) | 2018-07-27 |
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| CN201710655718.8A Active CN107237336B (en) | 2017-08-02 | 2017-08-02 | A kind of intelligent draining antiskid arch ring reinforcement means in stream shape landslide |
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