CN105821830A - Permeation increase siphon drainage system for low-permeability soil slope - Google Patents
Permeation increase siphon drainage system for low-permeability soil slope Download PDFInfo
- Publication number
- CN105821830A CN105821830A CN201610307632.1A CN201610307632A CN105821830A CN 105821830 A CN105821830 A CN 105821830A CN 201610307632 A CN201610307632 A CN 201610307632A CN 105821830 A CN105821830 A CN 105821830A
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- Prior art keywords
- siphon
- pervious concrete
- hypotonicity
- inner sleeve
- permeability
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- 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
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/20—Restraining of underground water by damming or interrupting the passage of underground water by displacing the water, e.g. by compressed air
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Hydrology & Water Resources (AREA)
- 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 invention relates to the technical field of drainage of low-permeability geotechnical engineering, in particular to a permeation increase siphon drainage system for a low-permeability soil slope. The permeation increase siphon drainage system is especially suitable for engineering drainage of low-permeability-coefficient water-rich strata. The permeation increase siphon drainage system is composed of a water-permeable concrete fracturing injection system and a siphon drainage system body. For the loess slope with low permeability and collapsibility, water-permeable concrete is pressed into the loess slope with low permeability, a high-permeability network channel is formed, and the range of influence that a cone of depression is generated by a single siphon drainage hole is widened. By means of a high-permeability water-permeable network, the drainage efficiency is increased; based on the high-lift siphon principle, redundant underground water in the slope is automatically and efficiently drained in real time, the underground water level of the slope can be controlled to be blow the safety water level, and no external power is needed; and the beneficial effects of being low in manufacturing cost and high in efficiency are achieved.
Description
Technical field
The invention belongs to hypotonicity soil body technical field of drainage, be specifically related to a kind of water discharge method being formed high osmosis network by press-in seepy material, be particularly well-suited to the draining of ground and the side slope being made up of hypotonicity soil.
Background technology
In basement process and preventing land slide field, the subsoil water that the discharge soil body is contained within time is the key of engineering control success or not.But, for the soil body that permeability is the lowest, drainage procedure generally requires long time, largely effects on project progress, and in the raising unit interval, the displacement of the hypotonicity soil body becomes the main path solving this problem.
At present, in field of foundation treatment, conventional sand drain and plastic draining board, as drainage channel, increase pore water pressure by the way of piling prepressing, form bigger hydraulic gradient between the soil body and drainage channel, the power discharged as subsoil water.This way engineering time is long, and complex procedures.And in slope treatment, carry out draining frequently with gravity type osculum, the puzzlement the most usually blocked by osculum.For solving this problem, having scholar to use siphon method that side slope is carried out draining, its advantage is to realize automatically controlling of siphon startup, is difficult to plug-hole, and draining depth is bigger.But this method there is also some problems in the hypotonicity soil body.Owing to the permeability of the soil body is low, causing entry into the rate of discharge of groundwater in siphonic system collector pipe little, siphon time out is long, has the risk of inefficacy.It addition, hypotonicity often leads to high hydraulic gradient so that siphon drainage cone of depression coverage is limited, the low mode in intensive layout siphon drainage hole need to be used to solve this problem, cause quantities to be greatly increased.Therefore, it is necessary to a kind of method and apparatus of invention, improve drainage efficiency and the coverage of the hypotonicity soil body in conjunction with siphon drainge system.
Summary of the invention
Low for the drainage efficiency in the hypotonicity soil body of siphon drainage method in prior art, coverage is little, needing the defects such as a large amount of manpower and materials, to be solved technical problem is that of patent of the present invention becomes net by seepy material pressure break in the hypotonicity soil body, forms the permeable network of high osmosis.Described anti-reflection technology is possible not only to increase hypotonicity inside soil body drainage area, improves drainage efficiency, and can play drainage in the effect of internal reinforcement, soil particle is had filtration, it is ensured that the soil body will not produce corrosion and destroy.In conjunction with siphon Auto-drainage, automatically recover, effective feature steady in a long-term, it is achieved efficient, the stable and safety drain of the hypotonicity soil body.The soil body type that subsoil water content is high, permeability is low, such as loess, silty clay etc..
The technical solution adopted for the present invention to solve the technical problems is:
A kind of anatonosis siphon drainge system for hypotonicity slight slope, it is characterized in that: the described anatonosis siphon drainge system for hypotonicity slight slope includes pressure break injected system and siphon drainge system, described pressure break injected system includes high-pressure pump, borehole casing, pervious concrete, described siphon drainge system includes siphon, collecting-tank, siphon drainge system is the high-lift siphon drainge system that lift is higher than 10m, for automatically starting siphon when groundwater table rise, discharging subsoil water in stratum in real time, controlling groundwater level is below a safety level.
The borehole casing of pressure break injected system is made up of pervious concrete pumping outlet, trocar sheath joint, inner sleeve pipe close, inner sleeve, outer sleeve, orientation injection tube head, water penetration collector pipe, orientation is injected tube head by boring and is arranged on the precalculated position in hypotonicity slight slope by borehole casing, adjust orientation and inject tube head position, it is ensured that the injection direction of pervious concrete.nullHigh-pressure pump is connected with pervious concrete pumping outlet，Pervious concrete is injected between inner sleeve and outer sleeve，Then pervious concrete is injected tube head from orientation and inject hypotonicity slight slope，Pervious concrete develops along soil body weakness zone，At fracturing stratum ground simultaneously，Whole crevice space can be full of and solidify，Form space high osmosis drainage network，The trocar sheath joint of borehole casing is taken off after pervious concrete solidification、Inner sleeve pipe close，The inner sleeve of borehole casing is made to be connected with the siphon of siphon drainge system，By watery vomiting to pouring into siphon and entering the collector pipe of lower end，Reduce siphon pipe lower end elevation，Make the pipe lower end elevation elevation less than pipe upper end，Realize initial siphon，Subsoil water enters orientation by space high osmosis drainage network and injects tube head，Inner sleeve is entered again by pervious concrete and water penetration collector pipe，By siphon, water is discharged to collecting-tank again.
The described anatonosis siphon drainge system for hypotonicity slight slope, it is characterized in that: described pervious concrete, infiltration coefficient reaches 0.01～0.02m/d, uses a small amount of cement mortar to add such as graded aggregate, form the permeable structure of high voidage, as seepage action of ground water passage.After press-in loess, formed centered by collector pipe, to the drainage network of surrounding diffusion.
Described borehole casing is double-tube structure, is pervious concrete injection channel between inner sleeve and outer sleeve.
Described siphon uses internal diameter polyurethane (PU) siphon less than 5mm, during siphon is flowed, can form slug flow, air will not be occurred to accumulate.
It is 10MPa that described high-pressure pump maximum is available for pressure, injects tube head present position, overlying soil thickness and the osculum spacing that relates to according to orientation and determines high-pressure pump pressure.
The inner sleeve of described borehole casing uses PVC, simultaneously as siphonal placement passage.
The outer sleeve of described borehole casing uses steel pipe, and pipe end arranges sizing tube head, orients tube head in boring procedure simultaneously as drill bit.
The invention has the beneficial effects as follows and be mainly manifested in:
1, the slope drainage system of the present invention utilizes high-lift siphon principle, subsoil water unnecessary in automatical and efficient real-time discharge side slope, can control slope underground water position below safe water plane, it is not necessary to any external impetus；
2, pervious concrete is pressed in hypotonicity Loess Landslide by the present invention by high pressure, forms high osmosis network channel, expands single siphon drainage hole and produces the coverage of cone of depression；
3, the high osmosis network channel that the present invention is formed, has draining concurrently and reinforces two functions, increases soil shear strength, improve Side Slope Safety Coefficient while lowering of watertable；
4, present invention is specifically directed to the loess slope with hypotonicity and settlement by soaking, increase drainage efficiency by the permeable network of high osmosis, rely on siphon drainage technology Auto-drainage, there is the advantage that cost is low, efficiency is high.
Accompanying drawing explanation
Fig. 1 is the know-why overall diagram of the present invention；
Fig. 2 is the borehole casing axial section of the present invention；
Fig. 3 is the borehole casing radial cutaway view of the present invention；
In figure: 1 level of ground water；2 space high osmosis drainage networks；3 borehole casings；4 hypotonicity slight slopes；5 siphons；6 collecting-tanks；7 pervious concrete pumping outlets；8 trocar sheath joints；9 inner sleeve pipe closes；10 inner sleeves；11 outer sleevees；12 orientations inject tube head；13 water penetration collector pipes；14 pervious concretes.
Detailed description of the invention
The present invention provides a kind of anatonosis siphon drainge system for hypotonicity slight slope, the described anatonosis siphon drainge system for hypotonicity slight slope includes that pressure break injected system and siphon drainge system, described pressure break injected system include high-pressure pump, borehole casing 3, pervious concrete 14；nullDescribed siphon drainge system includes siphon 5、Collecting-tank 6，Siphon drainge system is the high-lift siphon drainge system that lift is higher than 10m，For automatically starting siphon when groundwater table rise，Discharge subsoil water in stratum in real time，Controlling groundwater level is below a safety level，The borehole casing 3 of pressure break injected system is by pervious concrete pumping outlet 7、Trocar sheath joint 8、Inner sleeve pipe close 9、Inner sleeve 10、Outer sleeve 11、Orientation injects tube head 12、Water penetration collector pipe 13 forms，Orientation is injected tube head 12 by boring and is arranged on the precalculated position in hypotonicity slight slope 4 by borehole casing 3，Adjust orientation and inject tube head 12 position，Ensure the injection direction of pervious concrete 14，High-pressure pump is connected with pervious concrete pumping outlet 7，Pervious concrete 14 is injected between inner sleeve 10 and outer sleeve 11，Then pervious concrete 14 is injected tube head 12 from orientation and inject hypotonicity slight slope 4，Pervious concrete 14 develops along soil body weakness zone，At fracturing stratum ground simultaneously，Whole crevice space can be full of and solidify，Form space high osmosis drainage network 2，The trocar sheath joint 8 of borehole casing 3 is taken off after pervious concrete 14 solidification、Inner sleeve pipe close 9，The inner sleeve 10 of borehole casing 3 is made to be connected with the siphon 5 of siphon drainge system，By watery vomiting to pouring into siphon 5 and entering the collector pipe 13 of lower end，Reduce siphon 5 pipe lower end elevation，Make the pipe lower end elevation elevation less than pipe upper end，Realize initial siphon，Subsoil water enters orientation by space high osmosis drainage network 2 and injects tube head 12，Inner sleeve 10 is entered again by pervious concrete 14 and water penetration collector pipe 13，It is discharged to collecting-tank 6 again by 5 water of siphon.
Claims (5)
1. the anatonosis siphon drainge system for hypotonicity slight slope, it is characterized in that: the described anatonosis siphon drainge system for hypotonicity slight slope includes that pressure break injected system and siphon drainge system, described pressure break injected system include high-pressure pump, borehole casing (3), pervious concrete (14)；nullDescribed siphon drainge system includes siphon (5)、Collecting-tank (6)，Siphon drainge system is the high-lift siphon drainge system that lift is higher than 10m，For automatically starting siphon when groundwater table rise，Discharge subsoil water in stratum in real time，Controlling groundwater level is below a safety level，The borehole casing (3) of pressure break injected system is by pervious concrete pumping outlet (7)、Trocar sheath joint (8)、Inner sleeve pipe close (9)、Inner sleeve (10)、Outer sleeve (11)、Orientation injects tube head (12)、Water penetration collector pipe (13) forms，Orientation is injected tube head (12) by boring and is arranged on the precalculated position in hypotonicity slight slope (4) by borehole casing (3)，Adjust orientation and inject the position of tube head (12)，Ensure the injection direction of pervious concrete (14)，High-pressure pump is connected with pervious concrete pumping outlet (7)，Pervious concrete (14) is injected between inner sleeve (10) and outer sleeve (11)，Then pervious concrete (14) is injected tube head (12) from orientation and inject hypotonicity slight slope (4)，Pervious concrete (14) develops along soil body weakness zone，At fracturing stratum ground simultaneously，Whole crevice space can be full of and solidify，Form space high osmosis drainage network (2)，The trocar sheath joint (8) of borehole casing (3) is taken off after pervious concrete (14) solidification、Inner sleeve pipe close (9)，The inner sleeve (10) of borehole casing (3) is made to be connected with the siphon (5) of siphon drainge system，By watery vomiting to pouring into siphon (5). and enter the collector pipe (13) of lower end，Reduce siphon (5) pipe lower end elevation，Make the pipe lower end elevation elevation less than pipe upper end，Realize initial siphon，Subsoil water enters orientation by space high osmosis drainage network (2) and injects tube head (12)，Inner sleeve (10) is entered again by pervious concrete (14) and water penetration collector pipe (13)，By siphon (5), water is discharged to collecting-tank (6) again.
2. according to the anatonosis siphon drainge system for hypotonicity slight slope described in claim 1, it is characterised in that: described pervious concrete (14), infiltration coefficient reaches 0.01～0.02m/d.
3. according to the anatonosis siphon drainge system for hypotonicity slight slope described in claim 2, it is characterized in that: described borehole casing (3) is double-tube structure, be pervious concrete (14) injection channel between inner sleeve (10) and outer sleeve (11).
4. according to the anatonosis siphon drainge system for hypotonicity slight slope described in claim 3, it is characterised in that: described siphon (5) uses the internal diameter polyurethane siphon less than 5mm.
5. according to the anatonosis siphon drainge system for hypotonicity slight slope described in claim 4, it is characterized in that: the inner sleeve (10) of described borehole casing (3) uses PVC, the outer sleeve (11) of described borehole casing (3) uses steel pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610307632.1A CN105821830B (en) | 2016-05-05 | 2016-05-05 | A kind of anatonosis siphon drainge system for hypotonicity slight slope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610307632.1A CN105821830B (en) | 2016-05-05 | 2016-05-05 | A kind of anatonosis siphon drainge system for hypotonicity slight slope |
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| CN105821830A true CN105821830A (en) | 2016-08-03 |
| CN105821830B CN105821830B (en) | 2018-03-23 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522200A (en) * | 2016-11-24 | 2017-03-22 | 青岛理工大学 | Optimizing design method for water discharging holes of side slope retaining wall |
| CN106592545A (en) * | 2016-11-28 | 2017-04-26 | 浙江大学 | Water drainage system for water-enriched edge slope |
| CN107246019A (en) * | 2017-06-30 | 2017-10-13 | 浙江大学 | A kind of slope underground water drilling self-starting drainage by suction system and method |
| CN107449711A (en) * | 2017-09-25 | 2017-12-08 | 罗晓娟 | A kind of measurement apparatus and its method of aquifer with low permeability infiltration coefficient parameter |
| CN108561180A (en) * | 2018-01-12 | 2018-09-21 | 浙江大学 | A kind of longitudinal drainage system and method for disposition tunnel floor pore gas flow |
| 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 |
| CN110016922A (en) * | 2019-05-14 | 2019-07-16 | 河北工业大学 | A kind of novel integral draining anti-slide pile structure and its construction method |
| CN110130314A (en) * | 2019-04-04 | 2019-08-16 | 中国电建集团华东勘测设计研究院有限公司 | A kind of drop pump synergy vacuum pre-press reinforcing structure of soft soil foundation |
| CN111005760A (en) * | 2019-12-27 | 2020-04-14 | 中铁二院工程集团有限责任公司 | Drainage type drainage system for karst tunnel |
| CN111321749A (en) * | 2020-03-05 | 2020-06-23 | 兰州理工大学 | Recyclable rapid dredging device for water leakage of foundation pit enclosure and construction method thereof |
| CN111425249A (en) * | 2020-03-30 | 2020-07-17 | 中铁二院工程集团有限责任公司 | Tunnel wind power drainage system |
| CN113250141A (en) * | 2021-04-21 | 2021-08-13 | 三峡大学 | System and method for adjusting osmotic water pressure inside slope with water level change |
| CN113279368A (en) * | 2021-04-21 | 2021-08-20 | 三峡大学 | Device for automatically adjusting internal osmotic water pressure of side slope |
| CN114575359A (en) * | 2022-03-17 | 2022-06-03 | 中钢集团马鞍山矿山研究总院股份有限公司 | Weak-permeability soil layer slope groundwater disaster treatment method |
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| US5035535A (en) * | 1989-06-02 | 1991-07-30 | Gress S.A. | Device for regulating the flow in a drainage siphon tube |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522200A (en) * | 2016-11-24 | 2017-03-22 | 青岛理工大学 | Optimizing design method for water discharging holes of side slope retaining wall |
| CN106592545A (en) * | 2016-11-28 | 2017-04-26 | 浙江大学 | Water drainage system for water-enriched edge slope |
| CN107246019A (en) * | 2017-06-30 | 2017-10-13 | 浙江大学 | A kind of slope underground water drilling self-starting drainage by suction system and method |
| CN107449711A (en) * | 2017-09-25 | 2017-12-08 | 罗晓娟 | A kind of measurement apparatus and its method of aquifer with low permeability infiltration coefficient parameter |
| CN108561180A (en) * | 2018-01-12 | 2018-09-21 | 浙江大学 | A kind of longitudinal drainage system and method for disposition tunnel floor pore gas flow |
| 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 |
| CN110130314A (en) * | 2019-04-04 | 2019-08-16 | 中国电建集团华东勘测设计研究院有限公司 | A kind of drop pump synergy vacuum pre-press reinforcing structure of soft soil foundation |
| CN110016922A (en) * | 2019-05-14 | 2019-07-16 | 河北工业大学 | A kind of novel integral draining anti-slide pile structure and its construction method |
| CN111005760A (en) * | 2019-12-27 | 2020-04-14 | 中铁二院工程集团有限责任公司 | Drainage type drainage system for karst tunnel |
| CN111321749A (en) * | 2020-03-05 | 2020-06-23 | 兰州理工大学 | Recyclable rapid dredging device for water leakage of foundation pit enclosure and construction method thereof |
| CN111425249A (en) * | 2020-03-30 | 2020-07-17 | 中铁二院工程集团有限责任公司 | Tunnel wind power drainage system |
| CN113250141A (en) * | 2021-04-21 | 2021-08-13 | 三峡大学 | System and method for adjusting osmotic water pressure inside slope with water level change |
| CN113279368A (en) * | 2021-04-21 | 2021-08-20 | 三峡大学 | Device for automatically adjusting internal osmotic water pressure of side slope |
| CN114575359A (en) * | 2022-03-17 | 2022-06-03 | 中钢集团马鞍山矿山研究总院股份有限公司 | Weak-permeability soil layer slope groundwater disaster treatment method |
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