CN207700204U - A kind of french drain structure for Slope Prevention - Google Patents
A kind of french drain structure for Slope Prevention Download PDFInfo
- Publication number
- CN207700204U CN207700204U CN201721821766.1U CN201721821766U CN207700204U CN 207700204 U CN207700204 U CN 207700204U CN 201721821766 U CN201721821766 U CN 201721821766U CN 207700204 U CN207700204 U CN 207700204U
- Authority
- CN
- China
- Prior art keywords
- french drain
- backfill material
- ditches
- irrigation canals
- sand
- 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.)
- Active
Links
Landscapes
- Revetment (AREA)
Abstract
A kind of french drain structure for Slope Prevention, it is included in the french drain irrigation canals and ditches that side slope upstream periphery is dug, the bottom of french drain irrigation canals and ditches is equipped with sand-gravel cushion, two-layer barrier geomembrane is laid on the side wall and sand-gravel cushion of french drain irrigation canals and ditches, mixing is laid with sand gravel backfill material and expects with rubble backfill on two-layer barrier geomembrane, sand gravel backfill material is coated on rubble backfill material outside, and the height of rubble backfill material is more than phreatic line；Sand gravel backfill material top is laid with place earthen backfill material to ground level.The construction method of the utility model french drain structure; two-layer barrier geomembrane is laid on the madial wall lower part, bottom and entire lateral wall of french drain irrigation canals and ditches; and sand gravel, rubble and the Site Soil of suitable thickness are backfilled on two-layer barrier geomembrane; there are the side slopes of underground water to have the problems such as significant protective effect, effectively prevent ground immersion, excess surface water to architectural engineering for the construction method.
Description
Technical field
The utility model is related to geotechnical engineering fields, and in particular to a kind of french drain structure for Slope Prevention.
Background technology
Engineering ground at the top of Hilly Plateau, topography is more low-lying with respect to surrounding, in the construction process excavation zone Artificial Side-slope
With appearance infiltration and water burst phenomenon in foundation pit, Cut-off ditch is set at a distance according to conventional place periphery, gutter is nearby set
Method can not be solved effectively.How in the case where saving engineering cost to greatest extent, ensureing the principle of engineering safety, and without special
Complicated and expensive foundation pit construction precipitation is carried out, and achievees the purpose that foundation pit cuts draining and Slope Prevention, is the class for needing to study
Topic.
Utility model content
The problems in the purpose of this utility model is that for the above-mentioned prior art, it provides a kind of for the blind of Slope Prevention
Ditch structure can effectively prevent side slope seepage and foundation pit water burst, not had an impact to the normal construction in place simultaneously.
To achieve the goals above, the utility model adopts the following technical scheme：
A kind of french drain structure for Slope Prevention is included in the french drain irrigation canals and ditches that side slope upstream periphery is dug, french drain irrigation canals and ditches
Bottom is equipped with sand-gravel cushion, and two-layer barrier geomembrane is laid on the side wall and sand-gravel cushion of french drain irrigation canals and ditches, anti-in bilayer
It oozes mixing on geomembrane and is laid with sand gravel and backfills and expect to expect with rubble backfill, the sand gravel, which backfills, expects to be coated on rubble backfill material
Outside, the height of rubble backfill material is more than phreatic line；Sand gravel backfill material top is laid with place earthen backfill material to ground
Highly.
The bottom of the french drain irrigation canals and ditches is less than the level of ground water inside place.
The thickness of the sand-gravel cushion is 30cm~50cm.Two-layer barrier geomembrane is laid on the madial wall of french drain irrigation canals and ditches
The laying height of lower part, bottom and entire lateral wall, madial wall lower part is 50cm~100cm.
The thickness of the sand gravel backfill material of rubble backfill material lower section is 30cm~50cm, the sand gravel of rubble backfill material top
The thickness of backfill material is 50cm~100cm, and a side of rubble backfill material is bonded with the madial wall of french drain irrigation canals and ditches.
Being excavated in side slope bottom has gutter；The periphery of french drain irrigation canals and ditches, which is excavated, Cut-off ditch.
The utility model is used for the french drain construction method of Slope Prevention, including step：
Step 1: the french drain irrigation canals and ditches dug in side slope upstream periphery；
Step 2: by after the underground water pump drainage in french drain irrigation canals and ditches, it is laid with sand-gravel cushion；
Step 3: being laid with two-layer barrier geomembrane on the madial wall lower part, bottom and entire lateral wall of french drain irrigation canals and ditches；
Step 4: being laid with sand gravel backfill material in the bottom of two-layer barrier geomembrane, then it is laid in the inside of french drain irrigation canals and ditches
More than rubble backfill material to phreatic line, then, gravel is laid between two-layer barrier geomembrane on the outside of rubble backfill material
Stone backfill material finally continues to be laid with sand gravel backfill material above rubble backfill material；
Step 5: being laid with earthen backfill material in place above sand gravel backfill material to ground level, construction is completed.
The cutting depth of french drain irrigation canals and ditches described in step 1 is less than the level of ground water inside place.
Compared with prior art, the utility model is oozed from high to low using two-layer barrier geomembrane barrier underground water
Stream, due to french drain irrigation canals and ditches bottom be equipped with sand-gravel cushion, on two-layer barrier geomembrane mixing be laid with sand gravel backfill material with
Rubble backfill material replaces former foundation soil using bulky grain sand gravel and rubble, as new storage aquifer storage and can absorb big portion
Divide underground water, works along both lines, blocked seepage channel of the underground water to side slope and foundation pit, the stability of side slope plays effectively
Protective effect.The utility model intercepts underground water in side slope upstream source, changes the seepage field of underground water, can simultaneously effectively
The problem of preventing side slope seepage and foundation pit water burst, relative to special foundation pit construction dewatering project and Slope Prevention scheme, significantly
Cost is saved.
Description of the drawings
Fig. 1 the utility model is used for the french drain structural design scheme schematic diagram of Slope Prevention；
Fig. 2 the utility model is additionally arranged at the bottom of the design scheme schematic diagram in gutter in side slope；
In attached drawing：1- french drain irrigation canals and ditches；2- sand-gravel cushions；3- sand gravels backfill material；4- rubbles backfill material；5- two-layer barriers
Geomembrane；6- phreatic lines；7- Cut-off ditch；The places 8- earthen backfill material；9- natures ground altitude traverse；10- flat altitude traverses；
The places 11- enclosure wall；The excavation zones 12- Artificial Side-slope；The gutters 13-.
Specific implementation mode
The following describes the utility model in further detail with reference to the accompanying drawings.
It is blind in side slope peripheral (upstream) digging one first after determining the range of base pit dewatering and Slope Prevention referring to Fig. 1
Ditch irrigation canals and ditches 1, irrigation canals and ditches projected depth and width consider according to Practical Project and the calculating of underground water water yield, generally 1.2~
1.5m, depth should differentiate according to absolute altitude comprehensive judgement in formation lithology and field, in principle with trench bottom less than inside place
Level of ground water is advisable.Emphasis is answered to consider drainage problem simultaneously, bigger section of drainage effect of french drain depth is good, but must the row of designing
Aquaporin.
By bottom is encased inside 30~50cm of thickness, the good sand gravel conduct pad of grain composition again after underground water pump drainage in irrigation canals and ditches
Layer.
The entire lateral wall of irrigation canals and ditches, bottom and madial wall lower part place mat two-layer barrier geomembrane 5, geomembrane on bed course top
Laying should from irrigation canals and ditches " entire lateral wall-bottom-madial wall lower part " completely cover, madial wall lower part place mat depth be 50~
100cm。
In the sand gravel of 5 bottom of two-layer barrier geomembrane, 30~50cm of backfill thickness, rubble is then backfilled on the inside of furrow bank
More than material to phreatic line, outside is backfilled by sand gravel, then backfills the sand gravel of 50~100cm of thickness on it.
Ground level is finally backfilled to by Site Soil.
The specific scale of the above french drain can make the appropriate adjustments in the construction process according to Practical Project condition.
It can be obtained by above-mentioned analysis, which can obstruct underground water in engineering ground periphery, not influence place
Construction simplifies difficulty of governance, while having the function that foundation pit waterproof and Slope Prevention, has to the engineering of similar space enrironment condition
There are important guidance and reference.This french drain designs the protective effect that design scheme emphasis considers side slope, when being limited to apply
The influences such as work cutting depth, ground water drainage, cannot prevent completely underground water penetrate into place in, it is also contemplated that on the outside of enclosure wall and
Side slope adds the form of gutter (as shown in Fig. 2) or second french drain, but the stability of side slope is answered to be checked.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that specific embodiment of the present utility model is only limitted to this, for the utility model person of an ordinary skill in the technical field
For, without departing from the concept of the premise utility, several simple deduction or replace can also be made, these are simple
Deduction or replace all shall be regarded as belonging to the scope of patent protection that the utility model is determined by submitted claims.
Claims (6)
1. a kind of french drain structure for Slope Prevention, it is characterised in that：It is included in the french drain irrigation canals and ditches that side slope upstream periphery is dug
(1), the bottom of french drain irrigation canals and ditches (1) is equipped with sand-gravel cushion (2), the side wall of french drain irrigation canals and ditches (1) and sand-gravel cushion (2) upper berth
If two-layer barrier geomembrane (5), mixing is laid with sand gravel backfill material (3) on two-layer barrier geomembrane (5) and rubble backfill is expected
(4), sand gravel backfill material (3) is coated on rubble backfill material (4) outside, and the height of rubble backfill material (4) is in underground water
It is more than bit line；Place earthen backfill material (8) is laid with above sand gravel backfill material (3) to ground level.
2. being used for the french drain structure of Slope Prevention according to claim 1, it is characterised in that：The bottom of the french drain irrigation canals and ditches (1)
Portion is less than the level of ground water inside place.
3. being used for the french drain structure of Slope Prevention according to claim 1, it is characterised in that：The sand-gravel cushion (2)
Thickness is 30cm~50cm.
4. being used for the french drain structure of Slope Prevention according to claim 1, it is characterised in that：Two-layer barrier geomembrane (5) is spread
Be located at the madial wall lower part, bottom and entire lateral wall of french drain irrigation canals and ditches (1), the laying height of madial wall lower part be 50cm~
100cm。
5. according to claim 1 or the 4 french drain structures for being used for Slope Prevention, it is characterised in that：Below rubble backfill material (4)
Sand gravel backfill material (3) thickness be 30cm~50cm, rubble backfill material (4) above sand gravel backfill material (3) thickness
A side for 50cm~100cm, rubble backfill material (4) is bonded with the madial wall of french drain irrigation canals and ditches (1).
6. being used for the french drain structure of Slope Prevention according to claim 1, it is characterised in that：Being excavated in side slope bottom has draining
Ditch (13)；The periphery of french drain irrigation canals and ditches (1), which is excavated, Cut-off ditch (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721821766.1U CN207700204U (en) | 2017-12-23 | 2017-12-23 | A kind of french drain structure for Slope Prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721821766.1U CN207700204U (en) | 2017-12-23 | 2017-12-23 | A kind of french drain structure for Slope Prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207700204U true CN207700204U (en) | 2018-08-07 |
Family
ID=63027923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721821766.1U Active CN207700204U (en) | 2017-12-23 | 2017-12-23 | A kind of french drain structure for Slope Prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207700204U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107938690A (en) * | 2017-12-23 | 2018-04-20 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of french drain structure and its construction method for Slope Prevention |
-
2017
- 2017-12-23 CN CN201721821766.1U patent/CN207700204U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107938690A (en) * | 2017-12-23 | 2018-04-20 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of french drain structure and its construction method for Slope Prevention |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109056786A (en) | Face upward inclined road shoulder wall water drainage behind the wall system and construction method | |
| CN102296572B (en) | Earth and rockfill dam body seepage monitoring structure provided with abandoned dreg site behind dam and construction method thereof | |
| CN109113076A (en) | Method and structure for excavation supporting and water stopping of near-river sinking tunnel foundation pit | |
| CN112392127B (en) | Dendritic embedded type flexible ecological slope drainage ditch and construction method | |
| CN101914882B (en) | Low embankment structure in phreatic high slity soil region and construction method thereof | |
| CN207143981U (en) | 3rd is rich water half diagenesis Sandstone Section Metro station excavation discharge structure | |
| CN102383408A (en) | Greening method for high water level impermeable saline and alkaline lands and greening system | |
| CN207700204U (en) | A kind of french drain structure for Slope Prevention | |
| CN202627002U (en) | Tailing dam for water-inrush section of river-cut tailing pond | |
| Caldwell et al. | Geotechnical stability considerations in the design and reclamation of tailings impoundments | |
| CN104831742B (en) | The Method on Dewatering of Foundation Pit that adjacent two layers low pressure water layer is not cut off by water barrier | |
| CN209412838U (en) | A kind of Cut Slopes of Expansive Soil structure | |
| CN110080234A (en) | A method of it is excavated in the secondary central island of deep foundation pit of soft soil foundation | |
| CN107938690A (en) | A kind of french drain structure and its construction method for Slope Prevention | |
| CN206034603U (en) | Airport height fill construction three -dimensional drainage system | |
| CN106149736B (en) | The stable construction method of hillside fields bury excavation slope is kept based on draining is cut | |
| CN204875807U (en) | Bridge main pier cushion cap foundation pit supporting structure on river channel abrupt slope basement rock | |
| CN209397606U (en) | Near-river sinking tunnel foundation pit excavation is strutted and is fallen stagnant water structure | |
| CN210421127U (en) | Tunnel engineering back pressure backfill structure for treating shallow buried bias voltage diseases | |
| CN104775444B (en) | A kind of method for wet environment protection archeological site earthen ruins Yield rainfall relation | |
| CN210238538U (en) | Slope treatment device with supporting and drainage functions | |
| CN207988083U (en) | The orthogonal anti-structure of drainning off floodwaters of Gobi Region solar energy optical-thermal place | |
| CN108149698A (en) | Guiding solid drainage and construction method and system inside a kind of airport high fill foundation | |
| CN103774698A (en) | Drainage-free construction method for soil engineering | |
| CN215888097U (en) | Flood control protective dam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |