CN102535491A - Embedded water permeable plate water collection siphon drainage method for side slope ground water interception - Google Patents

Embedded water permeable plate water collection siphon drainage method for side slope ground water interception Download PDF

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Publication number
CN102535491A
CN102535491A CN2012100392916A CN201210039291A CN102535491A CN 102535491 A CN102535491 A CN 102535491A CN 2012100392916 A CN2012100392916 A CN 2012100392916A CN 201210039291 A CN201210039291 A CN 201210039291A CN 102535491 A CN102535491 A CN 102535491A
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China
Prior art keywords
slope
water
standpipe
groundwater
porous disc
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Pending
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CN2012100392916A
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Chinese (zh)
Inventor
孙红月
尚岳全
杜丽丽
贾义鹏
蔡岳良
朱汉华
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Zhejiang University ZJU
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Zhejiang University ZJU
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Priority to CN2012100392916A priority Critical patent/CN102535491A/en
Publication of CN102535491A publication Critical patent/CN102535491A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an embedded water permeable plate water collection siphon drainage method for side slope ground water interception. A groove is excavated on the upper middle part of a side slope, a water permeable plate is embedded into the groove, ground water on a shallow surface layer of the side slope is introduced into a water collecting pipe at the bottom of the water permeable plate, and the collected ground water is discharged from the surface of the side slope by a siphon. By the method, infiltrated ground water on the upper part of the side slope can be effectively intercepted, the ground water level of a slope body on the downstream side of an interception area is reduced, the construction cost of engineering for keeping the side slope stable is low, the workload of earth-rock excavation related in the treatment process is low, the implementation process of treatment engineering is simple and practicable, the drainage measure is high in reliability and adaptability and is flexibly used, power is not needed in the drainage process, and the drainage process is not required to be frequently managed or maintained.

Description

The flush type porous disc that slope underground water the dams siphon drainage method of catchmenting
Technical field
The present invention relates to a kind of phreatic water stopped flow technique of side slope, relate in particular to a kind of draining that cuts that is applicable to the gravelly soil side slope,, prevent the water discharge method that potential landslide area groundwater table rises through reducing the up stream slope body underground water seepage discharge of sloping body downstream.
Background technology
Landslide disaster often causes the heavy losses of lives and properties.Great majority come down and bring out owing to rainfall causes sloping body groundwater table rising.If can make up in the middle and upper part of side slope and effectively cut drainage system, minimizing side slope top underground water, just can effectively prevent the generation of most landslide disasters, thereby promote mountain area, hills geological environment safety to the potential landslide area of bottom seepage flow supply along side slope.
Section drainage measure of current side slope mainly is surface drainage ditch and weeper drain; The subject matter that they exist has: (1) gutter and weeper drain are high to the draining environmental requirement of sloping body; Many side slopes often lack favourable orographic condition, cause the validity of gutter and weeper drain to be difficult to guarantee; (2) surface water can only be tackled in the surface drainage ditch, but since the rainfall meeting to go into to be seeped into sloping body fast inner, the underground water that the surface drainage ditch can't the row's of cutting side slope be infiltrated; Section drainage effect in table gutter, old place is poor; More because side slope surface ground is loose, local distortion often being taken place, causes the surface drainage ditch cracking easily; Make concentrated the infiltrating of water in the surface drainage ditch, cause the entirely ineffective of local failure and gutter; (3) weeper drain is very high to the backfill requirement, needs to ensure the antiseepage of bottom of trench and the permeate well of ditch body, and construction is difficulty, and the while weeper drain should ensure the reasonable continuous gradient, in engineering practice, often is difficult to satisfy.
Summary of the invention
The objective of the invention is to the deficiency to prior art, the flush type porous disc that provides a kind of slope underground water the to dam siphon drainage method of catchmenting.
Target of the present invention realizes through following technical scheme: the flush type porous disc that a kind of slope underground water the dams siphon drainage method of catchmenting, and this method may further comprise the steps:
(1) according to the features of terrain of side slope hydrogeological conditions and side slope,, buries the porous disc that dams underground at the abundant relatively position of the upland water of side slope.Porous disc base buried depth is slightly larger than side slope groundwater table in rainy season, and general buried depth is got domatic following 1 ~ 2m, and the top is near the face of land.The porous disc length direction arranges that along domatic trend of side slope porous disc length is generally got 3 ~ 5m.
(2) diameter of header is generally got 8 ~ 10cm, and monolateral otch makes the porous disc that dams can closely insert header; The length of header is slightly larger than the length of porous disc, and connects standpipe at the two ends of header through catcher, and the length of standpipe is got 0.5 ~ 1m.
(3) from standpipe, draw syphon, keep siphonal water inlet height to be lower than the about 30cm of delivery port height of equalization of discharge pipe.At external vacuum pump of equalization of discharge pipe or manual pump bowl, bleeding makes siphon drainage pipe be in temporary vacuum, realizes initial siphonic process.
(4) the slope underground water position process of damming: after rainfall causes that underground water infiltrates, utilize the porous disc that dams to get into header to the underground water water conservancy diversion, flow into standpipe then; When groundwater table in the standpipe is higher than the delivery port water level of equalization of discharge pipe 1; Siphonic process takes place, and utilizes siphonage to discharge the underground water in the standpipe, realizes the groundwater table decreasing in the standpipe; Groundwater table decreasing in standpipe is to identical with equalization of discharge saliva position; Reach the control groundwater table of goal-setting, siphonic process temporarily stops, and all keeps fixed level in the pipe of equalization of discharge pipe and standpipe at this moment; After rainfall is next time risen sloping body groundwater table; The groundwater table of standpipe can be higher than the delivery port water level of equalization of discharge pipe again; Siphonic process repeats once more; The underground water that side slope top is infiltrated is in current floe condition all the time, reduces the area interstitial flow of the underground water on side slope top to potential landslide, keeps the groundwater table of potential landslide area to be in lower state all the time.
The invention has the beneficial effects as follows: use flush type porous disc that slope underground water of the present invention the dams siphon drainage method of catchmenting; Can realize that side slope top is infiltrated phreaticly effectively dams; Reduce the groundwater table of interception area downstream side slope body, the construction costs of guaranteeing to keep stability of slope is low, and it is little that governance process relates to the earthwork evacuation workload; Operation is simple to administer project implementing process; The good reliability of drainage measure uses flexibility strong, and drainage procedure need not power and regular management maintenance.
Description of drawings
Fig. 1 is flush type porous disc that slope underground water of the present invention the dams siphon drainage method implementation sketch map that catchments;
Fig. 2 is the A-A sectional view of Fig. 1;
Among the figure: equalization of discharge pipe 1, siphon drainage pipe 2, the porous disc 3 that dams, side slope groundwater table in rainy season 4, header 5, catcher 6, standpipe 7, control groundwater table 8, side slope surface 9.
The specific embodiment
Principle of the present invention is underground water enrichment positions excavation groove in the side slope middle and upper part; Imbed the porous disc of bottom band header; Rely on porous disc to import header to the underground water of the shallow table of side slope portion; Discharge the face of land to slope underground water through siphon drainage pipe then, realizing that rainfall infiltration is phreatic dams in real time.
The flush type porous disc that slope underground water of the present invention the dams siphon drainage method of catchmenting, practical implementation may further comprise the steps:
(1) carries out the layout design of porous disc 3.According to the features of terrain of side slope hydrogeological conditions and side slope,,, bury the porous disc that dams underground like near the position exit or entrance of a clitch etc. at the abundant relatively position of the upland water of side slope.Porous disc base buried depth is slightly larger than side slope groundwater table in rainy season 4, and general buried depth is got domatic following 1 ~ 2m, and the top is near the face of land.The porous disc length direction arranges that along domatic trend of side slope porous disc length is generally got 3 ~ 5m.
(2) diameter of header 5 is generally got 8 ~ 10cm, and monolateral otch makes the porous disc 3 that dams can closely insert header 5.The length of header is slightly larger than the length of porous disc, and adopts catcher 6 to connect standpipe 7 at the two ends of header, and the length of standpipe is got 0.5 ~ 1m.
(3) from standpipe 7, draw syphon, keep siphonal water inlet height to be lower than the about 30cm of delivery port height of equalization of discharge pipe 1.At equalization of discharge pipe 1 external vacuum pump or manual pump bowl, bleeding makes siphon drainage pipe 2 be in temporary vacuum, realizes initial siphonic process.
(4) the slope underground water position process of damming.After rainfall causes that underground water infiltrates, utilize the porous disc 3 that dams to get into header 5 to the underground water water conservancy diversion, flow into standpipe 7 then.Because the two ends of header all are connected to standpipe, have reduced the horizontal requirement of header, also improve the reliability of siphon drainage process.When groundwater table in the standpipe is higher than the delivery port water level of equalization of discharge pipe 1; Siphonic process takes place; Utilize siphonage to discharge the underground water in the standpipe, realize the groundwater table decreasing in the standpipe, the groundwater table decreasing in standpipe is to identical with equalization of discharge saliva position; Reach the control groundwater table 8 of goal-setting, siphonic process temporarily stops.All keep fixed level in the pipe of equalization of discharge pipe 1 and standpipe 7 at this moment.After rainfall is next time risen sloping body groundwater table; The groundwater table of standpipe 7 can be higher than the delivery port water level of equalization of discharge pipe 1 again; Siphonic process repeats once more; The underground water that side slope top is infiltrated is in current floe condition all the time, reduces the area interstitial flow of the underground water on side slope top to potential landslide, keeps the groundwater table of potential landslide area to be in lower state all the time.
The combination of the present invention through following two aspects realizes that side slope top is infiltrated phreaticly effectively dams; Reduce the groundwater table of interception area downstream side slope body: (1) is at the middle part or the abundant position of top seepage action of ground water amount of side slope; Imbed porous disc 3; Underground water is seeped in the header 5 under concentrating, flows into then in the standpipe 7; (2) from standpipe 7, draw siphon drainage pipe; The water inlet of maintenance siphon drainage pipe is lower than the delivery port of equalization of discharge pipe 1; Whenever the water level of standpipe 7 rises the siphon drainage process just taking place, realizes that water level in the body standpipe of side slope slope is all the time dynamically near the delivery port water level of equalization of discharge pipe 1.

Claims (1)

1. the flush type porous disc that dams of the slope underground water siphon drainage method of catchmenting is characterized in that this method may further comprise the steps:
(1) according to the features of terrain of side slope hydrogeological conditions and side slope,, buries the porous disc that dams underground at the abundant relatively position of the upland water of side slope; Porous disc base buried depth is slightly larger than side slope groundwater table in rainy season, and general buried depth is got domatic following 1 ~ 2m, and the top is near the face of land; The porous disc length direction arranges that along domatic trend of side slope porous disc length is generally got 3 ~ 5m;
(2) diameter of header is generally got 8 ~ 10cm, and monolateral otch makes the porous disc that dams can closely insert header; The length of header is slightly larger than the length of porous disc, and connects standpipe at the two ends of header through catcher, and the length of standpipe is got 0.5 ~ 1m;
(3) from standpipe, draw syphon, keep siphonal water inlet height to be lower than the about 30cm of delivery port height of equalization of discharge pipe; At external vacuum pump of equalization of discharge pipe or manual pump bowl, bleeding makes siphon drainage pipe be in temporary vacuum, realizes initial siphonic process;
(4) the slope underground water position process of damming: after rainfall causes that underground water infiltrates, utilize the porous disc that dams to get into header to the underground water water conservancy diversion, flow into standpipe then; When groundwater table in the standpipe is higher than the delivery port water level of equalization of discharge pipe 1; Siphonic process takes place, and utilizes siphonage to discharge the underground water in the standpipe, realizes the groundwater table decreasing in the standpipe; Groundwater table decreasing in standpipe is to identical with equalization of discharge saliva position; Reach the control groundwater table of goal-setting, siphonic process temporarily stops, and all keeps fixed level in the pipe of equalization of discharge pipe and standpipe at this moment; After rainfall is next time risen sloping body groundwater table; The groundwater table of standpipe can be higher than the delivery port water level of equalization of discharge pipe again; Siphonic process repeats once more; The underground water that side slope top is infiltrated is in current floe condition all the time, reduces the area interstitial flow of the underground water on side slope top to potential landslide, keeps the groundwater table of potential landslide area to be in lower state all the time.
CN2012100392916A 2012-02-21 2012-02-21 Embedded water permeable plate water collection siphon drainage method for side slope ground water interception Pending CN102535491A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103741704A (en) * 2014-01-06 2014-04-23 化工部长沙设计研究院 Water-filling type siphon drainage device applicable to radioactive well
CN104196047A (en) * 2014-09-15 2014-12-10 浙江大学 Power-free reverse-water-pressurizing self-recovery slope high-lift siphon drainage system and drainage method
CN106088122A (en) * 2016-06-03 2016-11-09 华能伊敏煤电有限责任公司 Opencut end side infiltration step cuts the comprehensive processing method of row

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2399448Y (en) * 1999-11-26 2000-10-04 翁贤椿 Laminated drainage appts.
DE19938922A1 (en) * 1999-08-17 2001-03-01 Bauer Spezialtiefbau Purification of groundwater containing pollutants, using chemical reaction and adsorption container
CN1425832A (en) * 2001-10-18 2003-06-25 李兰英 Combined water draining device and its connecting method
CN1434173A (en) * 2002-01-25 2003-08-06 李兰英 Water permeable coreboard
CN102251529A (en) * 2011-06-02 2011-11-23 浙江大学 Self-balancing siphon drainage method by using side slope declining drill hole
CN102296589A (en) * 2011-06-02 2011-12-28 浙江大学 Foundation drainage method of well point water-drawing control group pipe siphon

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19938922A1 (en) * 1999-08-17 2001-03-01 Bauer Spezialtiefbau Purification of groundwater containing pollutants, using chemical reaction and adsorption container
CN2399448Y (en) * 1999-11-26 2000-10-04 翁贤椿 Laminated drainage appts.
CN1425832A (en) * 2001-10-18 2003-06-25 李兰英 Combined water draining device and its connecting method
CN1434173A (en) * 2002-01-25 2003-08-06 李兰英 Water permeable coreboard
CN102251529A (en) * 2011-06-02 2011-11-23 浙江大学 Self-balancing siphon drainage method by using side slope declining drill hole
CN102296589A (en) * 2011-06-02 2011-12-28 浙江大学 Foundation drainage method of well point water-drawing control group pipe siphon

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103741704A (en) * 2014-01-06 2014-04-23 化工部长沙设计研究院 Water-filling type siphon drainage device applicable to radioactive well
CN103741704B (en) * 2014-01-06 2016-03-09 化工部长沙设计研究院 A kind of radial Water siphon drainage device
CN104196047A (en) * 2014-09-15 2014-12-10 浙江大学 Power-free reverse-water-pressurizing self-recovery slope high-lift siphon drainage system and drainage method
CN104196047B (en) * 2014-09-15 2015-10-14 浙江大学 A kind of high-lift siphon drainge system of self-recoverage side slope and water discharge method of exempting from the reverse setting-out of power
CN106088122A (en) * 2016-06-03 2016-11-09 华能伊敏煤电有限责任公司 Opencut end side infiltration step cuts the comprehensive processing method of row

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Application publication date: 20120704