CN208594564U - A kind of radial drainage arrangement for protecting plateau engineering based on Gu Gou - Google Patents
A kind of radial drainage arrangement for protecting plateau engineering based on Gu Gou Download PDFInfo
- Publication number
- CN208594564U CN208594564U CN201820982386.4U CN201820982386U CN208594564U CN 208594564 U CN208594564 U CN 208594564U CN 201820982386 U CN201820982386 U CN 201820982386U CN 208594564 U CN208594564 U CN 208594564U
- Authority
- CN
- China
- Prior art keywords
- drainage
- water
- horizontal
- horizontal well
- plateau
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The utility model discloses a kind of radial drainage arrangement for protecting plateau engineering based on Gu Gou, drainage arrangement includes the horizontal well unit of several layers in the horizontal spread of bottom of trench, and the number of plies and elevation of horizontal well unit are determined according to the fluctuation area of level of ground water；Horizontal well unit connection determines the tilt angle of shaft element according to the maximum perpendicular height difference of the position combination siphon drainage of horizontal well unit for realizing the shaft element of siphonage；Drainage cell of the shaft element connection for drainage.The water discharge method of the utility model prevents slope foot from being washed away by underground water by the level of ground water of reduction Gullied Loess Plateau retrogressive erosion ditch head slope foot on a large scale, has effectively contained that ditch head caused by retrogressive erosion advances, therefore can control loess tableland area and sharply reduce.The utility model has effectively prevented ditch head retrogressive erosion, apparatus structure is simple, easy to implement by the way that the underground water in catchment area to be quickly discharged.
Description
Technical field
The utility model belongs to geological disaster prevention and control field, is related to a kind of radial draining dress that plateau engineering is protected based on Gu Gou
It sets.
Background technique
Then traditional batter drainage method is pacified to inclination construction at ditch head with drilling follow-up casing using inclined drill
The water-permeable pipe with bottom hole standpipe is filled, which is the bellows of punching, and geotextiles are knitted outside bellows, prevent silt from entering
In water-permeable pipe；The water-permeable pipe for retaining certain length outside aperture, is inserted into siphon drainage pipe in the water-permeable pipe, is then arranged using siphon
Water principle reduces the level of ground water of potential landslide area.Although having, drainage point selection is convenient, use reliability is good and maintenance is simple
The advantages that, if but apply in Canal in Loess Area, since loess permeability is weak, water sensitivity is strong, and displacement is then had a greatly reduced quality, when draining only
The soil water of nearly drainage hole can be discharged.Therefore, the technology is applied mostly and is reducing landslide class level of ground water at present, especially
If applying at Loess Plateau, the displacement of the method will be difficult to promote and apply on a large scale seriously by environmental restrictions.
Utility model content
The purpose of this utility model is that being directed to above-mentioned the problems of the prior art, provide a kind of based on Gu Gou guarantor's plateau engineering
Radial drainage arrangement, the underground water in catchment area can be quickly discharged, effectively prevent ditch head retrogressive erosion.
To achieve the goals above, the utility model protects the radial drainage arrangement of plateau engineering based on Gu Gou, is included in ditch
The horizontal well unit of the several layers of the open and flat cloth of bottom water, the number of plies and elevation of horizontal well unit are determined according to the fluctuation area of level of ground water；It is horizontal
The shaft element that well unit connects for realizing siphonage, according to the maximum of the position combination siphon drainage of horizontal well unit
Vertical height difference determines the tilt angle of shaft element；Drainage cell of the shaft element connection for drainage；The horizontal well unit
Including several horizontal drain pipes, the radial structure of binary tree is connected by horizontal well three-way connection between horizontal drain pipe；
The shaft element includes tilting drainpipe and the inclination three-way connection for connecting inclination drainpipe and horizontal drain pipe.
Multiple water seepage holes are offered on the horizontal drain pipe, are enclosed with strainer on the outer wall of horizontal drain pipe.
The inclination angle of the inclination drainpipe tilts difference in height between two ends of drainpipe and is less than 10m less than 90 °.
The length of every horizontal drain pipe is 6m, and horizontal drain pipe and the internal diameter for tilting drainpipe are 70mm.
Filled with for the gravel as filtering layer around the horizontal drain pipe.
The underground water being siphoned off is collected and is discharged in the channel that bottom of trench hardens by drainage tube by the drainage cell
To downstream, or ditch head reservoir is established, the underground water being siphoned off is collected in reservoir, then pump is drawn to the enterprising enforcement of plateau
With.
The utility model protects the radial water discharge method of plateau engineering based on Gu Gou, comprising the following steps:
Step 1: several horizontal drain pipes are connected by the radial structure of binary tree by horizontal well three-way connection, really
The fluctuation area for determining ditch head slope foot area level of ground water, the arrangement number of plies of horizontal well unit is determined according to the fluctuation area of level of ground water
And determining that horizontal well unit arranges elevation accordingly, the maximum perpendicular height difference according to horizontal well unit position combination siphon drainage is true
The tilt angle of the oblique drainpipe of constant inclination, installs shaft element；
Step 2: wrapping up strainer on the outer wall of horizontal drain pipe, and gravel conduct is filled around horizontal drain pipe
Filtering layer, according to equipotential surface principle, in the initial state, the water level tilted in drainpipe is concordant with this；
Step 3: the drainage tube of drainage cell is protruded into inclination drainpipe, according to siphon principle, when level of ground water is crossed
After the plane of arrangement of horizontal well unit, since the maximum perpendicular that the difference in height of two ends of inclination drainpipe is less than siphon drainage is high
Difference, therefore automatic starting siphon drainage process, underground water in well is discharged；After the decline of well water position, hydraulic gradient is generated, is made
The underground water that contains in loess will continue through the water seepage hole of horizontal drain pipe and enter, until will herein level of ground water be down to
The horizontal plane of horizontal well unit is concordant；
Step 4: underground water is collected in the channel that bottom of trench hardens by drainage tube, and is drained by channel to downstream；
Or ditch head reservoir is established, the underground water of discharge is collected in reservoir, then pump is drawn to the enterprising enforcement of plateau and uses.
The arrangement number of plies and arrangement elevation of the horizontal well unit take ditch head landfill and transforming slope into terrace two ways after determining
It is installed.
Compared with prior art, the utility model solves traditional row based on the Gu Gou radial drainage arrangement for protecting plateau engineering
The problem of drainage facility collecting water from runoff is small and frequent cutout, is able to maintain catchment area using the radial discharge structure of binary tree and begins
It keeps eventually uniformly, realization quickly and effectively collects underground water, so that large area lowering of watertable, increases cone of depression body
Product.Ditch head retrogressive erosion can be prevented and treated by the device, the serious problem of current Loess Plateau plateau face atrophy is solved, from source
Head has prevented the generation of geological disaster.The radial structure of binary tree is connected between the horizontal drain pipe of the utility model, is led to
The a wide range of level of ground water for reducing Gullied Loess Plateau retrogressive erosion ditch head slope foot is crossed, prevents slope foot from being washed away by underground water, has
Effect has contained that ditch head caused by retrogressive erosion advances, and can control loess tableland area and sharply reduce, protect the life of resident on plateau
Life and property safety.
Detailed description of the invention
The overall structure diagram of Fig. 1 the utility model；
The structural schematic diagram of the horizontal well unit of Fig. 2 the utility model；
The structural schematic diagram of Fig. 3 the utility model shaft element and drainage cell；
The structural schematic diagram of Fig. 4 the utility model inclination three-way connection；
The structural schematic diagram of Fig. 5 the utility model horizontal drain pipe and inclination drainpipe；
In attached drawing: the horizontal well unit of 1-；2- shaft element；3- drainage cell；11- horizontal drain pipe；The horizontal well three of 12- connects
Head；13- water seepage hole；14- strainer；21- tilts drainpipe；22- tilts three-way connection；31- drainage tube.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings.
Referring to Fig. 1, the utility model is included in the horizontal spread of bottom of trench based on the Gu Gou radial drainage arrangement for protecting plateau engineering
The horizontal well unit 1 of several layers, the number of plies of horizontal well unit 1 and elevation are determined according to the fluctuation area of level of ground water；Horizontal well unit 1 connects
The shaft element 2 for realizing siphonage is connect, it is high according to the maximum perpendicular of the position combination siphon drainage of horizontal well unit 1
Difference determines the tilt angle of shaft element 2, drainage cell 3 of the connection of shaft element 2 for drainage.The draining list of the utility model
The underground water being siphoned off is collected in the channel that bottom of trench hardens and is emitted into downstream by drainage tube 31 by member 3, or establishes ditch
Head reservoir, the underground water being siphoned off is collected in reservoir, and then pump is drawn to the enterprising enforcement of plateau and uses.
Referring to fig. 2-5, the horizontal well unit 1 of the utility model includes several horizontal drain pipes 11, on horizontal drain pipe 11
Multiple water seepage holes 13 are offered, strainer 14 is enclosed on the outer wall of horizontal drain pipe 11, is filled with around horizontal drain pipe 11
For the gravel as filtering layer.The radial knot of binary tree is connected by horizontal well three-way connection 12 between horizontal drain pipe 11
Structure.Shaft element 2 includes inclination drainpipe 21 and the inclination threeway for connecting inclination drainpipe 21 and horizontal drain pipe 11
Connector 22.The inclination angle of drainpipe 21 is tilted less than 90 °, difference in height between two ends of drainpipe 21 is tilted and is less than 10m.Every
The length of horizontal drain pipe 11 is 6m, and horizontal drain pipe 11 and the internal diameter for tilting drainpipe 21 are 70mm.
The utility model protects the radial water discharge method of plateau engineering based on Gu Gou, comprising the following steps:
Step 1: successively connecting into the radial structure of binary tree for horizontal drain pipe 11 using horizontal well three-way connection 12,
The fluctuation area for determining ditch head slope foot area level of ground water, the layer of horizontal well unit 1 is arranged according to level of ground water fluctuation area size
It counts and determines that horizontal well unit 1 arranges specific elevation accordingly, then take two kinds of measure peaces of ditch head landfill and transforming slope into terrace two ways
Horizontal well unit 1 is filled, shaft element 2 is determined according to the maximum perpendicular height difference of the position combination siphon drainage of horizontal well unit 1
The tilt angle for tilting drainpipe 21, after determining above-mentioned data, installs shaft element 2.
Step 2: horizontal well unit 1 is arranged in the horizontal spread of bottom of trench, and to prevent 14 silting of strainer, in horizontal drain pipe
Gravel is filled around 11 and is used as filtering layer, continues to complete ditch head landfill and the safeguard procedures such as transforming slope into terrace, after engineering, according to etc.
Gesture face principle, in the initial state, the water level tilted in drainpipe 21 will be concordant with level of ground water herein；
Step 3: the drainage tube 31 of drainage cell 3 is protruded into inclination drainpipe 21, according to siphon principle, works as underground water
After horizontal 1 plane of arrangement of well unit is crossed in position, since the difference in height of two ends of inclination drainpipe 21 is less than siphon drainage most
Big vertical height difference can start siphon drainage process automatically, then underground water in well can be discharged, and after the decline of well water position, can produce
Hydraulic gradient is given birth to, then the water seepage hole 13 for continuing through horizontal well unit 1 is entered the device by the underground water contained in loess, until inciting somebody to action
Level of ground water is down to concordant with the horizontal plane of horizontal well unit 1 is arranged herein, and retrogressive erosion main cause is i.e. due to slope foot bottom
For loess by the infiltration of underground water, water sensitivity is very high, and shearing strength reduces, and constantly through current scour, advances to source, top then exists
It collapses under waterpower and gravity coupling, so ditch head is caused constantly to advance into plateau in cycles.
Step 4: after bottom of trench and the underground water of two sides are discharged via the drainage tube 31 of drainage cell 3, by underground water in ditch
Collect in the channel of bottom hardening, is then drained by channel to downstream；Alternatively, ditch head reservoir is established, by the underground water of discharge
It collects in reservoir, then is drawn on plateau by pump, used for resident on plateau.
The utility model solves the problems, such as that conventional discharge method collecting water from runoff is small, frequent cutout, and horizontal well unit uses binary tree
Radial structure can keep catchment area uniform always, can quickly, effectively collect underground water, large area reduces underground
Water level increases cone of depression volume.Ditch head retrogressive erosion can be effectively prevented by the method, solves current Loess Plateau
The serious problem of plateau face atrophy effectively prevent the generation of geological disaster.The utility model uses binary tree water discharge method, on a large scale
Reduction Gullied Loess Plateau retrogressive erosion ditch head slope foot level of ground water, prevent slope foot from being washed away by underground water, may also be combined with
Gu Gou protects the dual gully head protection of plateau measure progress at present for ditch head landfill, transforming slope into terrace etc., so that more efficient containment retrogressive erosion is made
At ditch head advance and geological disaster generation, effectively control loess tableland area sharply diminution, protect plateau on resident life
And property safety.
First it should be noted that following embodiment and comparative example are compared under the conditions of same water and soil, trial zone face
Product is equal are as follows: test zone position is selected in that radiation center is on the lower side to keep comparison result accurately and significant by 30 × 30m, horizontal well unit
For pipeline buried depth in sustained height, loess phreatic aquifer level and vertical hydraulic conductivity are respectively 2.32 × 10-2M/d and
0.12m/d, porosity 0.45, horizontal pipe are all made of HDPE pipeline, caliber 70mm, wall thickness 3.5mm, it is assumed that water-bearing layer thickness
H=9.0m stablizes well water depth h after drawing water0=5.0m, the main distinction are only that using different drainage arrangements.
Its pipeline radius of influence R=3000sk can be obtained by hydraulic formula1/2.By can be calculated, in the water and soil condition
Under, horizontal radius of influence RH=6m, vertical radius of influence RV=14m.Embodiment and comparative example are described in detail as follows:
Embodiment:
In the present embodiment, multiple drainpipes 11 are all the same, and the length of drainpipe 11 is 6m, and the internal diameter of drainpipe 11 is
70mm；The length of each inclination drainpipe 21 is arranged according to the gradient of place Loess Plateau channel, tilts the interior of drainpipe 21
Diameter is 70mm；The difference in height for tilting two ends of drainpipe 21 is less than 10m.
Specifically, the water seepage hole 13 on drainpipe 11 is laid along the axial direction of drainpipe 11.
900m can be completely covered in the horizontal well unit of the utility model2Trial zone area, effect of catchmenting is very good.
Comparative example 1:
The comparative example uses siphon drainage method, is constructed using inclined drill to inclination at ditch head, with drilling follow-up casing；
Then water-permeable pipe with bottom hole standpipe is installed, which is the bellows of punching, and geotextiles are knitted outside bellows, prevent mud
Sand enters in water-permeable pipe；Retain certain length water-permeable pipe outside aperture, siphon drainage pipe is inserted into the water-permeable pipe, in siphon drainage
It manages and is equipped with water inlet close to tube wall at ground terminal.The caliber of water-permeable pipe is 70mm, wall thickness 3.5mm, the area of trial zone be (30 ×
30)m2.By calculating, siphon drainage method only covers 21.87m2Trial zone area, effect of catchmenting is poor.
Comparative example 2:
The comparative example uses radial drainage, and the radial for changing water discharge method includes vertical shaft and horizontal collector pipe, perpendicular
Multiple horizontal collector pipes are connected on the borehole wall of the lower part of well.Set 8 radiating apertures at the secondary test height, radiating aperture should be to facing upward
Oblique 5 °~10 °, the load level collector pipe in radiating aperture, length is set to 30m, is wrapped up with geotextiles, caliber 70mm, wall thickness
3.5mm, trial zone 30 × 30m of area2.By calculating, radial drainage can cover 667m2, and effect of catchmenting is general.
The above content is described in detail preferred embodiments of the present invention, but the utility model be not limited to it is above-mentioned
Detail in embodiment can carry out technical solution a variety of simple in the range of the technology design of the utility model
Modification, these simple variants belong to the protection scope of the utility model.It is further to note that in above-mentioned specific embodiment party
Each particular technique feature described in formula can be combined in any manner in the case of no contradiction.In order to keep away
Exempt from unnecessary repetition, no further explanation will be given to various combinations of possible ways for the utility model.
Claims (6)
1. a kind of radial drainage arrangement for protecting plateau engineering based on Gu Gou, it is characterised in that: if including in the horizontal spread of bottom of trench
The horizontal well unit (1) of dried layer, the number of plies and elevation of horizontal well unit (1) are determined according to the fluctuation area of level of ground water；Horizontal well unit (1)
The shaft element (2) for realizing siphonage is connected, according to the maximum of the position combination siphon drainage of horizontal well unit (1)
Vertical height difference determines the tilt angle of shaft element (2)；Drainage cell (3) of shaft element (2) connection for drainage；
The horizontal well unit (1) includes several horizontal drain pipes (11), passes through horizontal well threeway between horizontal drain pipe (11)
Connector (12) connects into the radial structure of binary tree；The shaft element (2) includes inclination drainpipe (21) and is used for
The inclination three-way connection (22) of connection inclination drainpipe (21) and horizontal drain pipe (11).
2. the radial drainage arrangement of plateau engineering is protected based on Gu Gou according to claim 1, it is characterised in that: the level
It is offered on drainpipe (11) multiple water seepage holes (13), strainer (14) is enclosed on the outer wall of horizontal drain pipe (11).
3. the radial drainage arrangement of plateau engineering is protected based on Gu Gou according to claim 1, it is characterised in that: the inclination row
The inclination angle of water pipe (21) tilts difference in height between two ends of drainpipe (21) and is less than 10m less than 90 °.
4. the radial drainage arrangements of plateau engineering are protected based on Gu Gou according to claim 1 or described in 3, it is characterised in that: every water
The length of flat raft water pipe (11) is 6m, and horizontal drain pipe (11) and the internal diameter for tilting drainpipe (21) are 70mm.
5. the radial drainage arrangement of plateau engineering is protected based on Gu Gou according to claim 1, it is characterised in that: the level
Filled with for the gravel as filtering layer around drainpipe (11).
6. the radial drainage arrangement of plateau engineering is protected based on Gu Gou according to claim 1, it is characterised in that: drainage cell
(3) underground water being siphoned off is collected in the channel that bottom of trench hardens and is emitted into downstream by drainage tube (31), or establish
Ditch head reservoir, the underground water being siphoned off is collected in reservoir, and then pump is drawn to the enterprising enforcement of plateau and uses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820982386.4U CN208594564U (en) | 2018-06-25 | 2018-06-25 | A kind of radial drainage arrangement for protecting plateau engineering based on Gu Gou |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820982386.4U CN208594564U (en) | 2018-06-25 | 2018-06-25 | A kind of radial drainage arrangement for protecting plateau engineering based on Gu Gou |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208594564U true CN208594564U (en) | 2019-03-12 |
Family
ID=65601793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820982386.4U Expired - Fee Related CN208594564U (en) | 2018-06-25 | 2018-06-25 | A kind of radial drainage arrangement for protecting plateau engineering based on Gu Gou |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208594564U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589751A (en) * | 2018-06-25 | 2018-09-28 | 长安大学 | A kind of radial drainage arrangement and method for protecting plateau engineering based on Gu Gou |
-
2018
- 2018-06-25 CN CN201820982386.4U patent/CN208594564U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589751A (en) * | 2018-06-25 | 2018-09-28 | 长安大学 | A kind of radial drainage arrangement and method for protecting plateau engineering based on Gu Gou |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103046565B (en) | Draining method for ultra-deep batholith deep foundation pit | |
| CN101705691A (en) | Construction method of dewatering well under foundation slab in foundation pit | |
| CN105821830A (en) | Permeation increase siphon drainage system for low-permeability soil slope | |
| CN203530996U (en) | Multi-well-point combined type precipitation facility | |
| CN103741715B (en) | The hydrophobic construction method of a kind of basement waterproofing | |
| CN102535384B (en) | In-trench water-stone separation siphoning-drainage debris flow control method | |
| CN106087953A (en) | A kind of drainage and construction method preventing and treating large-scale spoil ground, mountain area mud-rock flow | |
| CN210827513U (en) | Self-adaptation side slope drainage seepage prevention structure | |
| CN109577380B (en) | Construction method for basement bottom plate water seepage under karst landform condition | |
| CN208594564U (en) | A kind of radial drainage arrangement for protecting plateau engineering based on Gu Gou | |
| CN204551510U (en) | A kind of filled-up ground catchments pressure reduction well drop and drainage structure | |
| CN109610486A (en) | A kind of high slope Permeable interlayer trapping method | |
| CN112726659A (en) | Double-backflow-preventing retaining wall drain pipe and using method thereof | |
| CN104805873A (en) | Multi-defense line type anti-floating system capable of monitoring release of water pressure of basement | |
| CN204940314U (en) | A kind of bellend pressure reduction well and deep foundation ditch structure thereof | |
| CN104975610B (en) | Expanded-end decompression well, deep foundation pit structure and construction method for expanded-end decompression well | |
| CN108589751A (en) | A kind of radial drainage arrangement and method for protecting plateau engineering based on Gu Gou | |
| CN215441978U (en) | Light well point dewatering device under condition of muddy saturated soil texture | |
| CN205954646U (en) | Deep basal pit excavation precipitation device | |
| CN105064384B (en) | Vacuum tube well precipitation system | |
| CN108589796B (en) | Substrate water-dispersing treatment method | |
| CN110616772B (en) | Recharge system for rainwater storage and monitoring and construction method of recharge system | |
| CN208486227U (en) | The nonopiate anti-structure of drainning off floodwaters of Gobi Region solar energy optical-thermal place | |
| CN109630192A (en) | A kind of precipitation method suitable for the construction of half diagenesis bored tunnel | |
| CN214363565U (en) | A drainage structures and pipeline network fall fast in foundation ditch bottom for suspension type curtain |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190312 Termination date: 20190625 |