CN101148885B - Stereo drainage system structure for landfill underground water - Google Patents
Stereo drainage system structure for landfill underground water Download PDFInfo
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- CN101148885B CN101148885B CN200710036063A CN200710036063A CN101148885B CN 101148885 B CN101148885 B CN 101148885B CN 200710036063 A CN200710036063 A CN 200710036063A CN 200710036063 A CN200710036063 A CN 200710036063A CN 101148885 B CN101148885 B CN 101148885B
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Abstract
The stereo underground water draining system for landfill includes one upper water flow cutting off structure set in the top of the slope in landfill, one bottom water draining structure set in the bottom of landfill, and water cutting off open ditches. The upper water flow cutting off structure includes permeated water cutting off pipes around the landfill; the water cutting off open ditches dug in the periphery of the landfill have outlet in the downstream of the landfill; and the permeated water cutting off pipes are communicated to outside landfill or to the bottom water draining structure. The water draining system may have also middle water flow cutting off structure and foot water flow cutting off structure communicated mutually. The water draining system can drain underground water and surface water effectively to ensure the antiseepage effect of the impervious barrier.
Description
Technical field
The present invention relates to the phreatic a kind of white-out system architecture of landfill yard, relate in particular to the phreatic a kind of stereo drainage system architecture of landfill yard.
Background technology
At present, the site of hazardous waste (industry solid useless) and city life garbage landfill generally all addressing in the remote mountain areas, for the engineering quantity that reduces landfill yard, reduce investment outlay, most landfill yards all are to utilize the cheuch place, build in zanjon that is ringed on three sides by mountains or depression.Generally all the high slope of dense vegetation, mountain is steep, catchment area is bigger in these places, so cause the surface water and the seepage water on the higher hillside of landfill yard periphery to import at the bottom of the landfill yard field easily.Modern landfill yard adopts the horizontal antiseepage mostly.Be control underground water peak level, make it be lower than impervious barrier at the bottom of the landfill yard field, guarantee impervious barrier at the bottom of the landfill yard field to avoid phreatic invasion and attack and cause the jacking of antiseepage film, individual layer underground water white-out french drain was set under the impervious barrier at the bottom of the landfill yard field in the past usually, the underground water that flows into an end was in time discharged landfill yard.This white-out mode is not high to the upstream massif, and catchment area is little, and the not abundant landfill yard of underground water adapts to; But the area steep to high slope, mountain, that underground water is relatively abundanter, its compliance is poor, thereby causes some landfill yards after building up operation, runs into rainy season especially during heavy rain, and groundwater table is raised at the bottom of the landfill yard field, thereby makes antiseepage film produce " water bag " phenomenon.As not adding control, even may the bursting antiseepage film, destroy impervious barrier, make impervious barrier lose anti-seepage effect, and then cause the sewage percolate to flow into lithic drainage, polluted underground water matter, consequence is hardly imaginable.How effectively to reduce the groundwater table of landfill yard place, guarantee the normal operation of landfill yard, just become the problem that this area needs to be resolved hurrily.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, a kind of not only economical rationality is provided but also can effectively reduces landfill yard place groundwater table and then prevent that underground water from avoiding polluting, the phreatic stereo drainage system architecture of landfill yard of stable side slope.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is: the phreatic stereo drainage system architecture of a kind of landfill yard, a white-out structure at the bottom of comprising, go up and cut the white-out structure and cut big vast open drain, be equipped with impervious barrier at landfill yard, impervious barrier below at the bottom of end white-out structure is arranged at, end white-out structure comprises the field end white-out pipe that the field end french drain that excavates at the bottom of the field and Qi Nei bury underground, go up a section white-out structure and be arranged at slope seepage control layer below, a last section white-out structure comprises cutting oozes pipe, cut and to ooze pipe to be positioned at landfill yard closing border inboard and along the place periphery, cut and to ooze that pipe directly leads to outside the venue or be connected with a field end white-out tubular structure by connecting pipe (or raceway groove), cut big vast open drain and excavate in the periphery, closing border of landfill yard and along the place periphery, the outlet in an end white-out pipe and section big vast open drain is arranged on the outside, landfill yard downstream.
Above-mentioned landfill yard exit or entrance of a clitch place builds the dirty dam that cuts of various types usually, and the dam body edge that is positioned at the landfill yard outside is provided with dam abutment and cuts big vast open drain, cuts the outlet of oozing pipe and may extend to dam abutment and cut big vast open drain and be attached thereto logical.Dam abutment cuts big vast open drain and can be connected with the above-mentioned big vast open drain of cutting.
Above-mentioned section oozes pipe and is embedded in the bottom of landfill yard drainage blanket and the top of aquitard with an end white-out pipe.
Above-mentioned section oozes pipe for soft filter pipe (or other similar material), oozes the pipe bottom and is provided with to cut and oozes the pipe pad seat cutting.Cut that ooze usually can the backfill of rubble drainage blanket around the pipe.
The phreatic stereo drainage system architecture of above-mentioned landfill yard, cut the white-out structure in also can under the impervious barrier of side slope middle part, being provided with, in cut the white-out structure and cut the drainage pipe that french drain and Qi Nei bury underground in comprising, drainage pipe oozes pipe with cutting of absolute altitude lower and is connected, or be connected with end white-out structure by connecting pipe, perhaps directly draw outside the venue.
Above-mentioned end white-out structure also comprises along leg wire of slope direction excavation toe french drain dredges pipe with the toe that is embedded in it, and toe is dredged pipe and is connected with an end white-out pipe.Toe is dredged pipe and is embedded in the bottom of landfill yard drainage blanket and the top of aquitard.
White-out structure of above-mentioned the end also comprises in conjunction with well, excavates at the bottom of the landfill yard field near the downstream in conjunction with well, and the field end white-out pipe of an end all directions and toe are dredged pipe and be intersected in conjunction with Jing Chu, in conjunction with well by the field at the bottom of the white-out pipe pass to outside the venue.
The phreatic stereo drainage system architecture of above-mentioned landfill yard also comprises drowning well, and drowning well excavates in the bottom, landfill yard place of not laying impervious barrier, and the well that falls into water is dredged pipe with an end white-out pipe and/or toe and is connected.
Cut french drain, toe french drain and an end french drain in above-mentioned and all be excavated to aquitard or basement rock, backfill has the rubble drainage blanket in the ditch, establishes one deck geotextiles between rubble drainage blanket and the furrow bank rubble drainage blanket is wrapped up.Above-mentioned drainage pipe, toe are dredged the UPVC pipe (or other similar materials) that pipe and end white-out pipe are 50% perforate of the pipe shaft first half, and the eyelet on the UPVC pipe is quincunx distribution.
Compared with prior art, the invention has the advantages that to landfill yard underground water white-out scheme practical, economical rationality is provided, thereby the underground water that makes the landfill yard place obtains rapid white-out, reduce or the control groundwater table, prevent " water bag " or ponding bursting antiseepage film etc. and destroy the phenomenon of impervious barrier, guarantee the anti-seepage effect of landfill site seepage prevention layer.Underground water can make groundwater quality avoid the pollution of landfill yard rubbish dirt after being discharged outside the landfill yard effectively, reliable water quality guarantee is provided for the downstream people's lives, guarantees its safety of drinking water.Simultaneously, dewatering has also played the indirect protection effect to section dirty dam and the refuse stacking edge slope of landfill yard, makes landfill slope more stable.
Description of drawings
Fig. 1 is a layout plan of the present invention;
Fig. 2 is the section enlarged diagram of Fig. 1 at the A-A place;
Fig. 3 is for cutting the schematic diagram of burying underground that oozes pipe and drainage pipe;
Fig. 4 is the schematic diagram of burying underground of an end white-out pipe;
Fig. 5 is for cutting the longitudinal section schematic diagram that oozes pipe and base;
Fig. 6 is the cross-sectional schematic of Fig. 1 at the B-B place;
Fig. 7 is the cross-sectional schematic of Fig. 6 at the C-C place;
Fig. 8 is the cross-sectional schematic of Fig. 1 at the D-D place;
Fig. 9 is the cross-sectional schematic of Fig. 8 at the E-E place;
Figure 10 is the perforate schematic diagram of UPVC pipe in the present embodiment;
Figure 11 is the curved amplification floor map of leading to fitting of an end white-out structure;
Figure 12 is an amplification floor map of end white-out structure three-way connector;
Figure 13 is an amplification floor map of the straight-through connector of end white-out structure.
Marginal data:
1, cut ooze the pipe 51, anchored platform
11, cut big vast open drain 52, in cut french drain
12, cut dirty dam 53, toe french drain
13, dam abutment cuts big vast open drain 54, an end french drain
14, cut and ooze pipe pad seat 55, geotextiles
2, drainage pipe 56, rubble drainage blanket
3, toe is dredged pipe 6, impervious barrier
4, an end white-out pipe 61, antiseepage film
41, drowning well 62, drainage blanket
42, in conjunction with well 63, aquitard
43, white-out pipe connections 64, stratigraphic boundary
44, white-out pipe outlet section 65, landfill refuse
45, quincunx distribution 7, water retaining dike
46, cover plate 71, spread impervious barrier landfill district
47,50% perforate 72, do not spread impervious barrier landfill district
5, closing border
The specific embodiment
As Fig. 1～shown in Figure 13, the phreatic stereo drainage system architecture of a kind of landfill yard of the present invention, the water retaining dike 7 at landfill yard place middle part is divided into the east with the landfill of landfill yard and has been spread impervious barrier landfill district 71 and western part and do not spread impervious barrier and fill out district 72, builds the dirty dam 12 that cuts of landfill yard at the place, the exit or entrance of a clitch, northeast of spreading impervious barrier landfill district.The bottom of having spread impervious barrier landfill district 71 is equipped with impervious barrier 6, and impervious barrier 6 comprises the antiseepage film 61 that lay on its top, and impervious barrier 6 down includes earth formations such as drainage blanket 62, aquitard 63 successively, is boundary with stratigraphic boundary 64 between each earth formation.Antiseepage film 61 tops heap is filled with landfill refuse 65.Stereo drainage system architecture of the present invention comprise cut a white-out structure, in cut white-out structure, an end white-out structure and be located at the big vast open drain 11 of cutting at landfill yard top.The big vast open drain 11 of cutting at top is positioned at final 5 outsides, closing border of landfill yard, and around the place periphery.The surface water of landfill yard periphery mainly comes together in and cuts big vast open drain 11, and discharges outside the venue with cutting big vast open drain 11.Go up to cut a white-out structure, in cut the different level section that white-out structure and an end white-out structure are arranged in the landfill yard place, and all be arranged at impervious barrier 6 belows of landfill yard, form three-dimensional white-out system with this underground water layering of landfill yard place is dammed discharge outside the venue.
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 5, on cut the white-out structure and comprise cutting and ooze pipe 1, cut and ooze pipe 1 and be positioned at 5 inboard positions, closing border, and around the place periphery near borders.Cut and to ooze pipe 1 and be embedded in the bottom of landfill yard drainage blanket 62 and the top of aquitard 63, make a pipe top mark high position when burying underground as far as possible below the normal phreatic line of landfill yard.As shown in Figure 3, ooze pipe 1 near landfill yard closing border 5 owing to cut, the height that landfill refuse 65 heaps of its top are filled out is little, carry little, therefore cut and ooze pipe 1 and adopt soft filter pipe (or similarly other tubing), this soft filter pipe is by being provided with coating, filtration beds, pervious layer and PVC steel wire (see figure 5) successively in outer the reaching, this pipe not only can satisfy demands for bearing capacity, and drainage effect is better, but ooze pipe 1 bottom and should be provided with to cut and ooze pipe pad seat 14 cutting, to ooze mistake along journey with the underground water of avoiding compiling.Cut the outlet of oozing pipe 1 and should be located at the absolute altitude lower that makes things convenient for underground water to efflux, cut the outlet of oozing pipe 1 in the present embodiment and be located at the dam abutment (see figure 1) of cutting dirty dam 12.Be positioned at the dirty dam of cutting of landfill yard outside dam body edge and be provided with dam abutment and cut big vast open drain 13, cut the outlet of oozing pipe 1 and extend to dam abutment and cut big vast open drain 13 and be attached thereto logical.The underground infiltration at landfill yard periphery and top is mainly oozed 1 section row of pipe by cutting of top, and oozes pipe 1 and flow to dam abutment and cut big vast open drain 13 with cutting, and then discharges outside the venue.Wholely go up to cut the underground water that the white-out structure is mainly used in white-out landfill yard periphery, make it not flow to landfill yard and directly drain into the downstream.
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 10, in cut a white-out structure and cut french drain 52 and drainage pipe 2 in mainly comprising.In cut french drain 52 and generally excavate in impervious barrier 6 belows at landfill slope middle part, for the ease of construction, present embodiment will in cut french drain 52 and be arranged on side-lowers in the anchored platform 51 at side slope middle part, and around the place periphery, and be excavated to aquitard 63.Cut during drainage pipe 2 is embedded in the french drain 52, drainage pipe 2 oozes pipe 1 with cutting of absolute altitude lower and is connected.Drainage pipe 2 is mainly used in secondary and cuts row top and cut and ooze the pipe 1 following underground water that oozes of not draining fully, and charge for remittance wherein flows into cutting of absolute altitude lower at last and oozes pipe 1, oozes pipe 1 and discharges outside the venue with cutting.Drainage pipe 2 also can be directly, and (or simultaneously) is connected with an end white-out structure, make wherein charge for remittance with the field at the bottom of the discharge of white-out structure outside the venue.As the permission of landform absolute altitude condition, also the underground water in the drainage pipe 2 directly can be drawn outside the landfill yard.The material of drainage pipe 2 and structure should be determined according to the height that rubbish heap on the anchored platform is filled out, and can adopt soft filter pipe (see figure 5) or UPVC pipe (see figure 10), make its supporting capacity can satisfy corresponding load bearing requirements.Present embodiment adopts is as shown in figure 10 the UPVC pipe with 50% perforate, 47 structures.In concrete practice, under the situation less relatively when the phreatic water yield of landfill yard, that slope height is less, cut the layout of white-out structure in can cancelling, make white-out effect and cost control reach balance preferably.
As Fig. 1～shown in Figure 10, an end white-out structure comprises that toe french drain 53, toe are dredged pipe 3, an end french drain 54, an end white-out pipe 4 and in conjunction with well 42.At the bottom of toe is dredged pipe 3, end white-out pipe 4 and is embedded in respectively in the toe french drain 53 of excavation, the end french drain 54.Toe is dredged pipe 3 and is mainly arranged along the leg wire of slope direction, a white-out pipe 4 at the bottom of the place absolute altitude is higher than, and the toe caliber of dredging pipe 3 generally be slightly less than at the bottom of the caliber of white-out pipe 4, the size of caliber should consider that displacement size, cost factor etc. determine in the practice.Toe is dredged pipe 3 and is interconnected with an end white-out pipe 4, is the (see figure 1) that is criss-cross arranged at the bottom of the field.If the cheuch at the bottom of the landfill yard field is narrow, then can not establish toe and dredge pipe 3, but at the bottom of landfill yard cheuch the lowest point should be buried a field at least underground white-out pipe 4.In general, because the rubbish heap raising degree at an end is higher, need to adopt concrete reinforced pipe or UPVC pipe can satisfy corresponding load bearing requirements.In the present embodiment, it is identical with the drainage pipe 2 at middle part with structure with a material of end white-out pipe 4 that toe is dredged pipe 3, and what promptly adopt is the UPVC pipe (see figure 10) with 50% open-celled structure 47.Excavate the field end white-out pipe 4 in downstream at the bottom of the field in conjunction with well 42 and dredge the concourse of pipe 3 with toe or adopt connector to be connected difficulty place (see figure 1), the field end white-out pipe 4 of an end all directions and toe are dredged pipe 3 and are intersected in conjunction with well 42 (seeing Fig. 8, Fig. 9).Field end white-out pipe in conjunction with white-out pipe outlet section 44 places, well 42 downstream 4 can increase its caliber according to circumstances, so that the underground water that is pooled in conjunction with well 42 effluxes sooner, groundwater table is stopped up high at the bottom of avoiding.One well 41 (see figure 1)s of falling into water are not arranged spreading on the field end white-out pipe pipeline in impervious barrier landfill district 72 also excavation, the well 41 that falls into water is dredged pipe 3 with an end white-out pipe 4, toe and is connected (seeing Fig. 6, Fig. 7), and well 41 shutoff cover plate 46 before later stage laying impervious barrier falls into water.The most of well 41 that passes through to fall into water of surface water that landfill yard is not spread in the impervious barrier landfill district 72 is collected, and is collected in conjunction with well 42 by white-out pipe 4 at the bottom of the field then, discharges outside the venue again.The underground water that is seeped into landfill yard bottom down by toe dredge pipe 3 and an end white-out pipe 4 collect and be collected in conjunction with and 42, discharge outside the venue again.Landfill yard also can not be provided with the well 41 and in conjunction with well 42 of falling into water, and directly dredge pipe 3 and an end white-out pipe 4 by toe underground water is drawn outside the venue.Fall into water well 41 and whether be provided with in conjunction with the concrete needs decision of well 42 according to the place, its position also can be determined according to concrete orographic condition.
As Figure 11～shown in Figure 13, have between the field end white-out pipe 4 of 50% perforate, 47 structures, toe is dredged between the pipe 3 and an end white-out pipe 4 and toe are dredged between the pipe 3 and all adopted white-out pipe connections 43 to connect, and then form whole white-out pipeline, so that the underground water in the pipe is discharged outside the venue.From Figure 11～Figure 13 as can be seen, the position of each UPVC pipe perforate presents quincunx distribution 45.
The drainage pipe 2 at above-mentioned middle part, the toe of bottom dredge pipe 3 and an end white-out pipe 4 all is embedded in the french drain, its buried depth visual field district hydrogeology situation and precipitation requirement etc. are determined, the buried depth h of these three kinds of pipe fittings all is lower than impervious barrier 6 following 1.5m (see figure 2)s in the present embodiment, and all be positioned at the bottom of landfill yard drainage blanket 62, the top of aquitard 63, the absolute altitude on pipe top is below normal phreatic line.Above-mentioned various french drains all are excavated to aquitard 63 (or basement rock), with 56 backfills of rubble drainage blanket, establish one deck geotextiles 55 between rubble drainage blanket 56 and the french drain furrow bank rubble and the underground water white-out pipe fitting of being buried underground are wrapped up fully in the ditch.
Go up to cut a white-out structure, in cut white-out structure and an end white-out structure respectively its separately aspect from landfill yard tail down roam all around the would to descending grade, to make things convenient for ground water discharge.Requirement in conjunction with the cost control and the white-out water yield, go up to cut a white-out structure, in cut and can establish french drain or white-out pipe fitting between a white-out structure and the end white-out structure and be connected to each other and be integral, thereby form three-dimensional, by different level, the landfill yard underground water white-out system of intercommunication type.
Operating principle:
As Fig. 1～shown in Figure 9, because high slope, mountain is steep in the landfill yard catchment area scope, when falling heavy rain and cause the peripheral pressure that drains off floodwaters that cuts big vast open drain 11 of landfill yard to increase, the part surface water permeates the ground and flow to the landfill yard on-site, the groundwater table of on-site is raised, the underground water on top, place constantly import to cut rapidly and oozes in the pipe 1 and ooze pipe and flow to dam abutment and cut big vast open drain 11 and efflux with cutting, cut and ooze the part infiltration that pipe 1 dams and down flow to side slope middle part, place, and remittance is embedded in the drainage pipe 2 of anchored platform 51 bottoms, underground water in the drainage pipe 2 flow to coupled logical cutting of absolute altitude lower at last and oozes pipe 1, and discharges outside the venue with cutting the charge for remittance that oozes in the pipe 1.Place middle part side slope is with the underground water of lower part and fail a small amount of infiltration down of oozing pipe 1 and 2 sections rows of drainage pipe through cutting, then dredging pipe 3 by the toe that is embedded in toe collects, and with toe dredge white-out pipe 4 at the bottom of the manifold admission, well 41 and in conjunction with in the well 42 falls into water, the well 41 that falls into water also will flow into an end white-out pipe 4 with being collected in conjunction with the underground water in the well 42, finally discharge outside the venue with white-out pipe at the bottom of the field 4.
Surface water outside the landfill yard place is mainly discharged outside the venue by cutting a big vast open drain 11, and the surface water of not spreading impervious barrier landfill district 72 on-sites then is collected to water retaining dike 7 upstreams, by white-out pipe 4 at the bottom of the laggard admission of well 41 collections of falling into water, outside appearing on the scene side by side.Spread to ooze under the surface water of impervious barrier (or piled fill out refuse) landfill district 71 on-sites to heap and filled out in the refuse, and the percolate delivery line of mainly establishing in addition by landfill yard effluxes.
Claims (10)
1. phreatic stereo drainage system architecture of landfill yard, a white-out structure at the bottom of it is characterized in that comprising, go up and cut the white-out structure and cut big vast open drain (11), be equipped with impervious barrier (6) at landfill yard, impervious barrier (a 6) below at the bottom of end white-out structure is arranged at, end white-out structure comprises to be excavated in field end french drain (54) at the bottom of the field and the end white-out pipe (4) buried underground in it, go up a section white-out structure and be arranged at slope seepage control layer (6) below, a last section white-out structure comprises cutting oozes pipe (1), cut and to ooze that pipe (1) is positioned at inboard, landfill yard closing border (5) and along the place periphery, cut and to ooze that pipe (1) directly passes to outside the venue or be connected with a field end white-out structure by connecting pipe, cut big vast open drain (11) and excavate in the periphery, closing border (5) of landfill yard and along the place periphery, the outlet in an end white-out pipe (4) and section big vast open drain (11) is arranged on the outside, landfill yard downstream.
2. the phreatic stereo drainage system architecture of landfill yard according to claim 1, it is characterized in that place, the described landfill yard exit or entrance of a clitch has built a section dirty dam (12), dirty dam (12) the dam body edge that cuts that is positioned at the landfill yard outside is provided with dam abutment and cuts big vast open drain (13), cuts the outlet of oozing pipe (1) and extends to dam abutment and cut big vast open drain (13) and be attached thereto logical.
3. the phreatic stereo drainage system architecture of landfill yard according to claim 1 is characterized in that described section oozes drainage blanket (62) bottom and aquitard (63) top that pipe (1) and end white-out pipe (4) are embedded in landfill yard place earth formation.
4. the phreatic stereo drainage system architecture of landfill yard according to claim 1, it is characterized in that described section, to ooze pipe (1) be soft filter pipe, oozes pipe (1) bottom and be provided with and section ooze pipe pad seat (14) cutting.
5. according to the phreatic stereo drainage system architecture of each described landfill yard in the claim 1～4, it is characterized in that also being included in and cut the white-out structure during side slope middle part impervious barrier (6) is provided with down, in cut the drainage pipe (2) that the white-out structure is cut french drain (52) and buried underground in it in comprising, drainage pipe (2) oozes pipe (1) with cutting of absolute altitude lower and is connected, or be connected with end white-out structure by connecting pipe, perhaps directly draw outside the venue.
6. according to the phreatic stereo drainage system architecture of each described landfill yard in the claim 1～4, it is characterized in that white-out structure of described the end also comprises along the toe french drain (53) of leg wire of slope direction excavation and the toe that is embedded in it dredges pipe (3), and toe is dredged pipe (3) and is connected with a field end white-out pipe (4).
7. the phreatic stereo drainage system architecture of landfill yard according to claim 5, it is characterized in that white-out structure of described the end also comprises along the toe french drain (53) of leg wire of slope direction excavation and is embedded in its interior toe dredges pipe (3), toe is dredged pipe (3) and is embedded in the bottom of landfill yard drainage blanket (62) and the top of aquitard (63), and toe is dredged pipe (3) and is connected with an end white-out pipe (4).
8. the phreatic stereo drainage system architecture of landfill yard according to claim 7, it is characterized in that described end white-out structure also comprises in conjunction with well (42), excavate at the bottom of the landfill yard field near the downstream in conjunction with well (42), the field end white-out pipe (4) of field end all directions and toe delivery line (3) are intersected in conjunction with well (42) to be located, and passes to outside the venue by an end white-out pipe (4) in conjunction with well (42).
9. the phreatic stereo drainage system architecture of landfill yard according to claim 7, it is characterized in that also comprising a drowning well (41), the well (41) that falls into water excavates in the bottom, landfill yard place of not laying impervious barrier (6), and the well (41) that falls into water is dredged pipe (3) with an end white-out pipe (4) and/or toe and is connected.
10. the phreatic stereo drainage system architecture of landfill yard according to claim 7, it is characterized in that cutting french drain (52) in described, a toe french drain (53) and an end french drain (54) are excavated to the aquitard (63) or the basement rock of landfill yard, backfill has rubble drainage blanket (56) in the ditch, establishing one deck geotextiles (55) between rubble drainage blanket (56) and the furrow bank wraps up rubble drainage blanket (56), described drainage pipe (2), toe is dredged the UPVC pipe that pipe (3) and end white-out pipe (4) are the pipe shaft first half 50% perforate (47), and the perforate on the UPVC pipe is quincunx distribution (45).
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| CN200710036063A CN101148885B (en) | 2007-11-07 | 2007-11-07 | Stereo drainage system structure for landfill underground water |
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| CN101705691B (en) * | 2009-10-30 | 2011-07-20 | 南通建工集团股份有限公司 | Construction method of dewatering well under foundation slab in foundation pit |
| CN102261082B (en) * | 2011-02-01 | 2013-06-05 | 深圳市胜义环保有限公司 | Method for controlling seepage by laying membrane for slag field in high water level area, membrane laying slag field and use method thereof |
| CN102182241B (en) * | 2011-02-01 | 2012-09-26 | 深圳市胜义环保有限公司 | Rain and sewage diversion system for phosphogypsum yard |
| CN102182208A (en) * | 2011-02-01 | 2011-09-14 | 深圳市胜义环保有限公司 | Underground water guiding and draining system under impermeable membrane of industrial waste residue storage yard |
| CN103046565B (en) * | 2011-10-17 | 2015-05-06 | 五冶集团上海有限公司 | Draining method for ultra-deep batholith deep foundation pit |
| CN103510528B (en) * | 2012-06-29 | 2015-09-02 | 深圳市工勘岩土工程有限公司 | For the blind drainage structure of underground structure anti-floating |
| CN104032761A (en) * | 2014-04-23 | 2014-09-10 | 上海市基础工程集团有限公司 | Combined dewatering and drainage method for high-moisture-content soft soil foundations close to rivers and seas |
| CN106948832B (en) * | 2017-03-14 | 2019-03-29 | 中铁隧道集团二处有限公司 | A kind of tunnel in cold regions heat-insulating water outlet construction method |
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