CN104499508B - A kind of special side slope geomembrane fixed structure of landfill yard and fixing means thereof - Google Patents
A kind of special side slope geomembrane fixed structure of landfill yard and fixing means thereof Download PDFInfo
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- CN104499508B CN104499508B CN201410621694.0A CN201410621694A CN104499508B CN 104499508 B CN104499508 B CN 104499508B CN 201410621694 A CN201410621694 A CN 201410621694A CN 104499508 B CN104499508 B CN 104499508B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/04—Watertight packings for use under hydraulic pressure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2450/00—Gaskets
- E02D2450/10—Membranes
- E02D2450/105—Membranes impermeable
- E02D2450/106—Membranes impermeable for liquids
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Abstract
The invention discloses a kind of special side slope geomembrane fixed structure of landfill yard and fixing means thereof, a kind of special side slope geomembrane fixed structure of landfill yard includes side slope, subsoil water lead layer and film lower protective layer and basis geomembrane, described subsoil water lead layer and film lower protective layer are laid in side slope, described basic geomembrane is laid on above underground lead layer and film lower protective layer, described basic geomembrane and underground lead layer and film lower protective layer are set to one by dog with side slope nail, described dog is covered with low ratio foamed closed-cell foam plate, double, two Smooth-surface geomembrane it is coated with above described low ratio foamed closed-cell foam plate, the basic geomembrane of the periphery of described double, two Smooth-surface geomembrane and the followed closely pressure of dog is welded to connect.The special side slope geomembrane fixed structure of this landfill yard and fixing means thereof, efficiently solve in precipitous rock slope and have the fixing geomembrane of side slope place bolt of local dent to be susceptible to the problem of seepage and technology maturation, easy construction, safety height.
Description
Technical field
The present invention relates to environment-friendly engineering technical field, especially relate to a kind of special side slope geomembrane fixed structure of landfill yard and fixing means thereof.
Background technology
Innoxious landfill be process in the world at present house refuse, mine tailing etc. environment is existed pollute solid, liquid debris one of main path, for preventing the pollutant pollution to surrounding enviroment, comparatively widespread practice be to bottom landfill district, side slope and end face adopt geomembrane pollutant and surrounding enviroment to be isolated.Geomembrane in bottom of the reservior, conventional side slope, the laying of closing and anchoring way specification all clear and definite, but how geomembrane is fixed with precipitous rock slope and side slope has local dent, how geomembrane is not made clearly with the special fixing way such as depression side slope laminating, and the usual way in industry is geomembrane and side slope to be fixed in conjunction with antiseepage pad with stainless steel bolt or with PE material bolt.Owing to this way is bolt to be worn film fix, the hole that screw rod is worn film with nut compressing pad carries out Anti-seeping technology, and effect is less desirable, easily wears geomembrane place at screw rod and seepage occurs.
Close highly higher for landfill district, the massif entirety gradient side slope more than 45 °, intermediate anchor ditch often cannot be set, plastic film mulch construction is maximum difficult point, if once-paving puts in place and centre does not set any anchor measure, geomembrane does not possess such tensile yield strength, therefore need to highly arrange middle reinforcement every 8 ~ 10m in plastic film mulch process and bring replacement anchoring groove.But adopting the usual way in existing industry to be used as middle reinforcement to be with, it is difficult to ensure that anti-seepage effect, environmental effect is big.
Landfill slope unavoidably there will be the situation of local larger area depression, recess geomembrane and side slope wall cannot be fitted and be formed hollowing, and under rubbish load action, this place's geomembrane is easily pulled off or punctures, and causes seepage, repairing difficulty very big, cost is often significantly high afterwards.
Chinese patent literature (the day for announcing: on April 30th, 2014, notification number: CN103758157A) disclose the laying method of a kind of refuse landfill HDPE geomembrane, realized by below step: (1) cuts out and overlap joint, HDPE geomembrane is cut out, overlaps around reservoir area and reservoir area；(2) sweat soldering, overlap joint upper slice and bottom sheet between blast compression air, form compressed air channel, weld seam is formed at described compressed air channel the right and left, two panels HDPE geomembrane is carried out hot melt, docks rapidly after arriving temperature, and weld in described commissure；(3) checking and repair, the HDPE geomembrane after sweat soldering is completed checks, checks the damage part of the HDPE geomembrane laid, and damages part more than more than the 10% of every HDPE geomembrane width, then this section is sheared, again lay.
What technique scheme solved is that geomembrane is easily torn at weld seam sheet in process of deployment, the problem causing seepage and the wasting of resources.
Chinese patent literature (the day for announcing: on January 5th, 2011, notification number: CN101936012A) disclose one way of life refuse landfill antiseepage film structure, the particularly antiseepage film anchoring of a kind of rock side slope monolayer leakage preventing structure side slope middle precipitous, hard, it includes bedrock side slope, sodium bentonite waterproof bed course GCL, antiseepage high density polyethylene film, the packed boulder bed of geotextiles, and it also includes anchoring HDPE film；It is positioned at antiseepage HDPE film above sodium bentonite waterproof bed course GCL fixing to be connected by thermofussion welding is airtight with anchoring HDPE film leading portion, anchors the bent sheet after HDPE film bends downwards and the sodium bentonite waterproof expanded bolt of bed course GCL is fixedly connected on bedrock side slope；The packed boulder bed of geotextiles is positioned at above antiseepage HDPE film.
Problem that the rock matter area of present stage rock slope, particularly solid rock side slope arranges that refuse landfill is difficult to antiseepage film anchoring that what technique scheme solved is.
Summary of the invention
First goal of the invention of the present invention is to solve in precipitous high rock slope and the problem that has the fixing geomembrane of side slope place bolt of local dent to be susceptible to seepage, it is provided that the special side slope geomembrane fixed structure of landfill yard that a kind of technology maturation, easy construction, safety are high.
Second goal of the invention of the present invention is to have the special side slopes such as local dent not have good fixing means to solve existing geomembrane and precipitous high rock slope and side slope, a kind of easy construction is provided, operation safety, the special side slope geomembrane fixing means of landfill yard of technology maturation.
The present invention realizes its first goal of the invention and be the technical scheme is that a kind of special side slope geomembrane fixed structure of landfill yard, including side slope, subsoil water lead layer and film lower protective layer and basis geomembrane, described subsoil water lead layer and film lower protective layer are laid in side slope, described basic geomembrane is laid on above underground lead layer and film lower protective layer, described basic geomembrane and underground lead layer and film lower protective layer are set to one by dog with side slope nail, described dog is covered with low ratio foamed closed-cell foam plate, double, two Smooth-surface geomembrane it is coated with above described low ratio foamed closed-cell foam plate, the basic geomembrane of the periphery of described double, two Smooth-surface geomembrane and the followed closely pressure of dog is welded to connect.The special side slope geomembrane fixed structure of this landfill yard, it is that the gradient is bigger, the structure that highly higher landfill slope and pit are fixed, together with basis geomembrane and subsoil water lead layer and film lower protective layer be securely seated between by a kind of special dog with side slope, owing to basis geomembrane and subsoil water lead layer and film lower protective layer can be punctured by dog after fixing, for antiseep, one block of low ratio foamed closed-cell foam plate is covered above every dog, then outside low ratio foamed closed-cell foam plate, cover the double, two Smooth-surface geomembrane of lid layer again, double, two Smooth-surface geomembrane adopt the geomembrane repaired, double, two Smooth-surface geomembrane are attached by the method welded with the basic geomembrane of low ratio foamed closed-cell foam plate periphery, it is capable of the effective leakproof to dog perforation.This fixed structure; double; two Smooth-surface geomembrane are welded as a whole with basis geomembrane; it is prevented effectively from basis geomembrane and in dog perforation place seepage occurs, and low ratio foamed closed-cell foam plate can either effectively protect double; two Smooth-surface geomembrane will not by the reverse bursting of dog cross bar under junk-heap body load action；This fixed structure makes dog nail foot hole place, one stress unit inherence of basis geomembrane form two point stress; basis geomembrane can be compressed by dog simultaneously; its frictional force can effectively share again the gravity laod of basis geomembrane, thus reducing basis geomembrane to be perforated the deformation of hole place bore edges；Being isolated by double; two Smooth-surface geomembrane between dog and percolate, dog is not easily corroded；This fixed structure easy construction, safety height.
As preferably, described dog is provided with low ratio foamed closed-cell foam plate with groove with basis geomembrane pressing place, and the described size of low ratio foamed closed-cell foam plate is arranged with the width fits of dog.Below dog, pad sets one piece and is with reeded low ratio foamed closed-cell foam plate; after Ba Shi hammers into side slope; dog cross bar is absorbed in inside grooves; both add the thrust between dog and basis geomembrane, be effectively protected again double; two Smooth-surface geomembrane under the load action of junk-heap body by the reverse bursting of dog cross bar.
As preferably, described dog is the round steel material members of U-shape structure, and including the nail foot being wholely set and cross bar, the width of described cross bar is be more than or equal to 100mm, and the length of described nail foot is be more than or equal to 200mm.Dog is special for said structure, compared with conventional bolt, traditional bolt basis geomembrane is fixed rear screw rod and nut can protrude from the geotechnique's face of basis, and adopt PE material press strip or pad to pierce through the repairing measures of basis geomembrane formation hole as bolt, owing to press strip or pad repairing area are only small, when the basic geomembrane at bolt hole place bears action of gravity for a long time, be pierced hole edge there will be moderate finite deformation, press strip and pad be easy to lost efficacy.And use the dog of this structure; owing to dog has two nail feet; the nail tip of two nail feet hammers into inside side slope completely; cross bar on dog is pressed on basis geomembrane or low ratio foamed closed-cell foam plate; make basis geomembrane follow closely foot hole place at dog in a stress unit and form two point stress; simultaneously the cross bar of dog or low ratio foamed close cystosepiment and can be compressed by basement membrane, and its frictional force can effectively share again basis geomembrane gravity laod, thus reducing basis geomembrane to be perforated the deformation of hole place bore edges.
As preferably, the end of described nail foot is provided with nail tip, and described nail foot is provided with pawl on the inside circumference face of nail tip.Nail foot arranges nail tip, nail foot arranges pawl, it is possible to what be effectively increased dog takes off clamp force, is effectively improved the Connected degree of dog and side slope.
As preferably, described low ratio foamed closed-cell foam plate minimum dimension is 150mm × 150mm, and thickness is be more than or equal to 10mm, and the double; two Smooth-surface geomembrane minimum dimensions covered on low ratio foamed closed-cell foam plate are 250mm × 250mm, and thickness is equal with basis geomembrane thickness.Low ratio foamed closed-cell foam board size size is advisable effectively covering dog, and the size one of double; two Smooth-surface geomembrane is to meet to cover requirement, and two is meet welding requirements, it is ensured that the security against leakage in life-time service process, it is to avoid cause environmental pollution.
As preferably, double; two Smooth-surface geomembrane weld with basis geomembrane after cross-section structure be trapezoidal cavity configuration.Such structure has good antiseep effect, also has certain deformability, adds service life, and security performance is high.
The present invention realizes its second goal of the invention and be the technical scheme is that the fixing means of the special side slope geomembrane fixed structure of the landfill yard described in a kind of claim 1, and the fixing means of the special side slope geomembrane fixed structure of this landfill yard comprises the following steps:
Step 1: side slope or the smooth process of pit；
Step 2: lay subsoil water lead layer and film lower protective layer in side slope or pit；
Step 3: lay basis geomembrane on subsoil water lead layer and film lower protective layer；
Step 4: basis geomembrane and subsoil water lead layer and film lower protective layer are followed closely in the lump in side slope or pit with dog；Or the reeded low ratio foamed closed-cell foam sleeve-board of band that a size and dog width fits are arranged is set on dog, with dog, basis geomembrane and subsoil water lead layer and film lower protective layer is followed closely in the lump in side slope or pit；
Step 5: cover low ratio foamed closed-cell foam plate on dog；
Step 6: cover the low ratio foamed closed-cell foam plate on dog and dog by double; two Smooth-surface geomembrane, and the periphery of double; two Smooth-surface geomembrane is welded to connect with basis geomembrane, complete to fix.
The fixing means of the special side slope geomembrane fixed structure of this landfill yard, is particularly suitable for the hillside entirety gradient more than 45 °, and the higher side slope that cannot arrange anchoring groove of landfill district closing.The method first carries out Slope leveling and processes and subsoil water lead layer and the laying of film lower protective layer, then basis geomembrane is laid, by dog, basis geomembrane and subsoil water lead layer and film lower protective layer are fixed as one with side slope, in order to prevent the cross bar of dog under rubbish load action, double, two Smooth-surface geomembrane being damaged, at dog below or above or the protective layer arranging geomembrane based on one block of expanded closed-cell cystosepiment and double, two Smooth-surface geomembrane in above and below simultaneously, finally double, two Smooth-surface geomembrane are welded on the geomembrane of basis, so basic geomembrane gravity load carrys out band by this fixed structure and undertakes, force-bearing situation meets the requirement of geomembrane tensile yield strength.This fixing means, easy to operate, safety is good, long service life, and consumptive material is few.
As preferably, described dog is the round steel material members of U-shape structure, including the nail foot being wholely set and cross bar, the width of described cross bar is be more than or equal to 100mm, the length of described nail foot is be more than or equal to 200mm, the end of described nail foot is provided with nail tip, and described nail foot is provided with pawl on the inside circumference face of nail tip.
As preferably, described low ratio foamed closed-cell foam plate minimum dimension is 150mm × 150mm, and thickness is be more than or equal to 10mm, and the double; two Smooth-surface geomembrane minimum dimensions covered on low ratio foamed closed-cell foam plate are 250mm × 250mm, and thickness is equal with basis geomembrane thickness.
As preferably, the special side slope geomembrane fixed structure of this landfill yard interlocks and is uniformly arranged in the region strengthening band in the middle of side slope or in pit.Such structure can effectively carry basis geomembrane deadweight.
The invention has the beneficial effects as follows: 1. compared with conventional bolt immobilizing foundation geomembrane, traditional basic geomembrane is fixed rear screw rod and nut can protrude from basis geotechnique's face, cannot repair by the method that geomembrane covers, it is generally adopted PE material press strip or pad and pierces through the repairing measures of basis geomembrane formation hole as bolt, only small owing to repairing area, when the basic geomembrane at bolt hole place bears action of gravity for a long time, be pierced hole edge there will be moderate finite deformation, press strip and pad be easy to lost efficacy.And the hole that dog nail foot is pierced through by technical solution of the present invention by the double; two Smooth-surface geomembrane of the fritter being welded on the geomembrane of basis is repaired, repairing area much larger than press strip or pad, antiseepage safety is high.
2. in prior art, geomembrane bolt hole place in a stress unit forms single-point stress.And geomembrane dog nail foot hole place in a stress unit in technical solution of the present invention basis forms two point stress; basis geomembrane can be compressed by the cross bar of dog simultaneously; its frictional force can effectively share again basis geomembrane gravity laod, thus reducing the deformation of geomembrane piercing hole place, basis bore edges.
3. easily there is corrosion in percolate in bolt long period of soaking of the prior art.And isolate by the double; two Smooth-surface geomembrane of fritter between technical solution of the present invention dog and percolate, good endurance.
4. prior art adopts PE material press strip or pad to wear the hole repair measure at geomembrane place, basis as bolt, and this way is difficult to carry out antiseepage detection.The technical scheme is that and double; two for fritter Smooth-surface geomembrane welded together with basis geomembrane by the method for patch installing, operating technology is ripe, good leak-proof effect, and has the leak detection method of maturation.
5. the fixed structure and the fixing means immobilizing foundation geomembrane safety that adopt the present invention are high.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of landfill yard of the present invention special side slope geomembrane fixed structure；
Fig. 2 is a kind of structural representation of dog in the present invention；
Fig. 3 is the front view of the special side slope geomembrane fixed structure of landfill yard of the present invention；
Fig. 4 is a kind of distributed effect figure of landfill yard of the present invention special side slope geomembrane fixed structure；
Fig. 5 is the another kind of structural representation of landfill yard of the present invention special side slope geomembrane fixed structure；
Fig. 6 is the another kind of structural representation of dog in the present invention；
In figure: 1, side slope, 2, subsoil water lead layer and film lower protective layer, 3, basis geomembrane, 4, dog, 5, low ratio foamed closed-cell foam plate, 6, double; two Smooth-surface geomembrane, 7, nail foot, 8, cross bar, 9, nail tip, 10, pawl, 11, pit, 12, groove.
Detailed description of the invention
Below by specific embodiment and in conjunction with accompanying drawing, technical scheme is described in further detail.
Embodiment 1:
At Fig. 1, in embodiment shown in Fig. 3, a kind of special side slope geomembrane fixed structure of landfill yard, including side slope 1, subsoil water lead layer and film lower protective layer 2 and basis geomembrane 3, subsoil water lead layer and film lower protective layer 2 are laid in side slope 1, basis geomembrane 3 is laid on above underground lead layer and film lower protective layer 2, basis geomembrane 3 and underground lead layer and film lower protective layer 2 are set to one by dog 4 with side slope 1 nail, dog 4 is coated with low ratio foamed closed-cell foam plate 5, double, two Smooth-surface geomembrane 6 it is coated with above low ratio foamed closed-cell foam plate 5, the basic geomembrane 3 of the periphery of double, two Smooth-surface geomembrane 6 and the followed closely pressure of dog is welded to connect.
Dog 4 is the round steel material members of U-shape structure, and including the nail foot 7 being wholely set and cross bar 8, the width of cross bar 8 is equal to 100mm, and the length of nail foot 7 is equal to 200mm, and the end of nail foot 7 is provided with nail tip 9(and sees Fig. 2).
Low ratio foamed closed-cell foam plate 5 is of a size of 150mm × 150mm, and thickness is equal to 10mm, covers the double; two Smooth-surface geomembrane 6 on low ratio foamed closed-cell foam plate 5 and is of a size of 250mm × 250mm, and thickness is equal with basis geomembrane 3 thickness.Double; two Smooth-surface geomembrane 6 with basis geomembrane 3 weld after cross-section structure be trapezoidal cavity configuration.
The fixing means of the special side slope geomembrane fixed structure of this landfill yard comprises the following steps:
Step 1: the smooth process of side slope 1；
Step 2: lay subsoil water lead layer and film lower protective layer 2 at side slope 1 place；
Step 3: lay basis geomembrane 3 on subsoil water lead layer and film lower protective layer 2；
Step 4: basis geomembrane 3 and subsoil water lead layer and film lower protective layer 2 are followed closely in the lump in side slope 1 or pit 11 with dog 4；Dog 4 is the round steel material members of U-shape structure, and including the nail foot 7 being wholely set and cross bar 8, the width of cross bar 8 is equal to 100mm, and the length of nail foot 7 is equal to 200mm, and the end of nail foot 7 is provided with nail tip 9.
Step 5: cover low ratio foamed closed-cell foam plate 5 on dog 4；Low ratio foamed closed-cell foam plate 5 is of a size of 150mm × 150mm, and thickness is equal to 10mm.
Step 6: cover the low ratio foamed closed-cell foam plate 5 on dog 4 and dog by double; two Smooth-surface geomembrane 6, and the periphery of double; two Smooth-surface geomembrane 6 is welded to connect with basis geomembrane 3, complete to fix.Covering the double; two Smooth-surface geomembrane 6 on low ratio foamed closed-cell foam plate 5 and be of a size of 250mm × 250mm, thickness is equal with basis geomembrane 3 thickness.
The special side slope geomembrane fixed structure of this landfill yard is staggered to be uniformly arranged in side slope middle reinforcement region or (see figure 4) in pit.
Embodiment 2:
In the embodiment shown in fig. 5, a kind of special side slope geomembrane fixed structure of landfill yard, including pit 11, subsoil water lead layer and film lower protective layer 2 and basis geomembrane 3, subsoil water lead layer and film lower protective layer 2 are laid in side slope 1, basis geomembrane 3 is laid on above underground lead layer and film lower protective layer 2, basis geomembrane 3 and underground lead layer and film lower protective layer 2 are set to one by dog 4 with pit 11 nail, one size and dog 4 width fits are arranged with fluted 12 low ratio foamed closed-cell foam sleeve-board be set on dog 4, with dog 4, basis geomembrane 3 and subsoil water lead layer and film lower protective layer 2 are followed closely in the lump on pit 11；Being covered with one block of low ratio foamed closed-cell foam plate 5 on dog 4, be coated with double; two Smooth-surface geomembrane 6 above low ratio foamed closed-cell foam plate 5, the basic geomembrane 3 of the periphery of double; two Smooth-surface geomembrane 6 and the followed closely pressure of dog is welded to connect.
Dog 4 is the round steel material members of U-shape structure, including the nail foot 7 being wholely set and cross bar 8, the width of cross bar 8 is equal to 120mm, and the length of nail foot 7 is equal to 250mm, the end of nail foot 7 is provided with nail tip 9, and nail foot 7 is provided with pawl 10(on the inside circumference face of nail tip 9 and sees Fig. 6).
Low ratio foamed closed-cell foam plate 5 is of a size of 200mm × 200mm, and thickness is equal to 12mm, covers the double; two Smooth-surface geomembrane 6 on low ratio foamed closed-cell foam plate 5 and is of a size of 300mm × 300mm, and thickness is equal with basis geomembrane 3 thickness.Double; two Smooth-surface geomembrane 6 with basis geomembrane 3 weld after cross-section structure be trapezoidal cavity configuration.
The fixing means of the special side slope geomembrane fixed structure of this landfill yard comprises the following steps:
Step 1: pit 11 is carried out smooth process；
Step 2: lay subsoil water lead layer and film lower protective layer 2 at pit 11 place；
Step 3: lay basis geomembrane 3 on subsoil water lead layer and film lower protective layer 2；
Step 4: a size and dog 4 width fits are arranged with fluted 12 low ratio foamed closed-cell foam sleeve-board be set on dog 4, with dog 4, basis geomembrane 3 and subsoil water lead layer and film lower protective layer 2 are followed closely in the lump on pit 11；Dog 4 is the round steel material members of U-shape structure, including the nail foot 7 being wholely set and cross bar 8, the width of cross bar 8 is equal to 120mm, and the length of nail foot 7 is equal to 250mm, the end of nail foot 7 is provided with nail tip 9, and nail foot 7 is provided with pawl 10 on the inside circumference face of nail tip 9.
Step 5: cover low ratio foamed closed-cell foam plate 5 on dog 4；Low ratio foamed closed-cell foam plate 5 is of a size of 200mm × 200mm, and thickness is equal to 12mm.
Step 6: cover the low ratio foamed closed-cell foam plate 5 on dog 4 and dog by double; two Smooth-surface geomembrane 6, and the periphery of double; two Smooth-surface geomembrane 6 is welded to connect with basis geomembrane 3, complete to fix.Covering the double; two Smooth-surface geomembrane 6 on low ratio foamed closed-cell foam plate 5 and be of a size of 300mm × 300mm, thickness is equal with basis geomembrane 3 thickness.
The special side slope geomembrane fixed structure of landfill yard described in examples detailed above and fixing means thereof, it is particularly well-suited at precipitous rock slope and the fixing geomembrane in side slope place having local dent, it is fixing that technique scheme utilizes dog can put down button, do not expose by the feature on button surface, double; two for fritter Smooth-surface geomembrane are covered on dog, double; two Smooth-surface geomembrane weld together with basis geomembrane, when applying pressure on this fixed structure, dog cross bar and low ratio foamed closed-cell foam plate with groove can ensure that basis geomembrane and double; two Smooth-surface geomembrane are not destroyed effectively.Dog nail foot length is typically no less than as 200mm, it is also possible to arranging pawl inside dog, what increase dog clenches power.Above-mentioned fixed structure and fixing means thereof are widely used.
The relatively steep and highly higher landfill slope that closes for the gradient, the overall gradient is more than 45 °, and landfill district closes higher highly again, it is very big that this type of landfill slope highly to arrange an anchoring groove difficulty every 8-10m as conventional landfill slope, and single-stage slope height often exceeds well over 10m.If once-paving puts in place and centre does not set any anchor measure, geomembrane does not possess such tensile yield strength, therefore need to highly arrange middle reinforcement every 8 ~ 10m in plastic film mulch process and bring replacement anchoring groove.
The specific practice adopting technical scheme is as follows:
nullFirst carry out the smooth process of side slope 1 and film lower protective layer is laid，Then the laying operation of basis geomembrane is carried out，Highly arrange every 8 ~ 10m and strengthen band together，Basis geomembrane and lower subsoil water lead layer thereof and film lower protective layer 2 are followed closely in reinforcement in the lump with in the side slope at place by dog 4 with place strengthening，Dog 4 level interval 1m，Adopt 3 rows，Array pitch 0.5m，Often row is staggeredly arranged，For preventing the cross bar of dog double; two Smooth-surface geomembrane 6 on which under rubbish load action from damaging，With 10mm thickness low ratio foamed closed-cell foam plate 5 as protective layer on dog，It is that the double; two Smooth-surface geomembrane 6 of 250mm × 250mm is welded on the geomembrane 3 of basis by minimum dimension again，Simultaneously，In order to increase the dog thrust to basis geomembrane，One block of low ratio foamed closed-cell foam plate with groove matched with dog width can also be set below dog，While seal face between dog and basis geomembrane is increased，Also the cross bar making dog sinks in low ratio foamed closed-cell foam plate，Facilitate the setting of superstructure.After adopting this fixed structure, each reinforcement band strengthened with following part basis geomembrane gravity load is reinforced by this fixed structure undertakes, force-bearing situation meets the requirement of basis geomembrane tensile yield strength, select to select as much as possible the geomembrane of high matte at basis geomembrane, to increase the frictional force of basis geomembrane and side slope, thus reducing the tensile stress of basis geomembrane.
When single this fixed structure of use, basis geomembrane can be fixed on landfill slope local has larger area recess.Often there is the situation of local larger area depression in landfill slope, recess basis geomembrane and side slope wall cannot be fitted and be formed hollowing, under rubbish load action, this basis, place geomembrane is easily pulled off or punctures, adopt fixed structure and the fixing means thereof of the application, can by basis geomembrane and the laminating of side slope wall, specific practice is: be first fixed in anchoring groove by subsoil water lead layer and film lower protective layer and basis geomembrane, with machinery by tight to the basic geomembrane of side slope recess and side slope wall pressure, with dog, basis geomembrane is fixed on the side slope wall of depression, size according to recess determines the quantity needing to use dog, then dog covers 10mm thickness low ratio foamed closed-cell foam plate, and square for 250mm × 250mm pair Smooth-surface geomembrane is welded on the geomembrane of basis.The repairing of pit can be completed quickly and safely, and solid and reliable, long service life.
Claims (9)
1. the special side slope geomembrane fixed structure of landfill yard, including side slope (1), subsoil water lead layer and film lower protective layer (2) and basis geomembrane (3), described subsoil water lead layer and film lower protective layer (2) are laid in side slope (1), described basic geomembrane (3) is laid on underground lead layer and film lower protective layer (2) top, it is characterized in that: described basic geomembrane (3) and underground lead layer and film lower protective layer (2) are set to one by dog (4) with side slope (1) nail, the round steel material members that described dog (4) is U-shape structure, including the nail foot (7) being wholely set and cross bar (8), the width of described cross bar (8) is be more than or equal to 100mm, the length of described nail foot (7) is be more than or equal to 200mm；Described dog (4) is covered with low ratio foamed closed-cell foam plate (5), described low ratio foamed closed-cell foam plate (5) top is coated with double; two Smooth-surface geomembrane (6), the periphery of described double; two Smooth-surface geomembrane (6) and dog (4) are followed closely the basic geomembrane (3) of pressure and are welded to connect, and basis geomembrane is followed closely foot hole place at dog in a stress unit and formed two point stress.
2. a kind of special side slope geomembrane fixed structure of landfill yard according to claim 1, it is characterized in that: described dog (4) is provided with low ratio foamed closed-cell foam plate (5) of groove (12) with basis geomembrane (3) pressing place, and the size of described low ratio foamed closed-cell foam plate (5) is arranged with the width fits of dog (4).
3. a kind of special side slope geomembrane fixed structure of landfill yard according to claim 1, it is characterized in that: the end of described nail foot (7) is provided with nail tip (9), described nail foot (7) is provided with pawl (10) on the inside circumference face of nail tip (9).
4. a kind of special side slope geomembrane fixed structure of landfill yard according to claim 1, it is characterized in that: described low ratio foamed closed-cell foam plate (5) minimum dimension is 150mm × 150mm, thickness is be more than or equal to 10mm, double; two Smooth-surface geomembrane (6) minimum dimension covered on low ratio foamed closed-cell foam plate (5) is 250mm × 250mm, and thickness is equal with basis geomembrane (3) thickness.
5. the special side slope geomembrane fixed structure of a kind of landfill yard according to claim 1 or 2 or 3 or 4, it is characterised in that: double; two Smooth-surface geomembrane (6) with basis geomembrane (3) weld after cross-section structure be trapezoidal cavity configuration.
6. the fixing means of the special side slope geomembrane fixed structure of landfill yard described in a claim 1, it is characterised in that: the fixing means of the special side slope geomembrane fixed structure of this landfill yard comprises the following steps:
Step 1: side slope (1) or pit (11) smooth process；
Step 2: lay subsoil water lead layer and film lower protective layer (2) in side slope (1) or pit (11) place；
Step 3: upper laying basis geomembrane (3) of subsoil water lead layer and film lower protective layer (2)；
Step 4: basis geomembrane (3) and subsoil water lead layer and film lower protective layer (2) are followed closely in the lump in side slope (1) or pit (11) with dog (4)；Or the set of low ratio foamed closed-cell foam plate (5) with fluted (12) size and dog (4) width fits arranged is set on dog (4), with dog (4), basis geomembrane (3) and subsoil water lead layer and film lower protective layer (2) are followed closely in the lump in side slope (1) or pit (11)；
Step 5: at dog (4) upper covering low ratio foamed closed-cell foam plate (5)；
Step 6: cover low ratio foamed closed-cell foam plate (5) on dog (4) and dog by double; two Smooth-surface geomembrane (6), and the periphery of double; two Smooth-surface geomembrane (6) is welded to connect with basis geomembrane (3), complete to fix.
7. the fixing means of the special side slope geomembrane fixed structure of a kind of landfill yard according to claim 6, it is characterized in that: the end of described nail foot (7) is provided with nail tip (9), described nail foot (7) is provided with pawl (10) on the inside circumference face of nail tip (9).
8. the fixing means of the special side slope geomembrane fixed structure of a kind of landfill yard according to claim 6, it is characterized in that: described low ratio foamed closed-cell foam plate (5) minimum dimension is 150mm × 150mm, thickness is be more than or equal to 10mm, double; two Smooth-surface geomembrane (6) minimum dimension covered on low ratio foamed closed-cell foam plate (5) is 250mm × 250mm, and thickness is equal with basis geomembrane (3) thickness.
9. the fixing means of the special side slope geomembrane fixed structure of a kind of landfill yard according to claim 6 or 7 or 8, it is characterised in that: the special side slope geomembrane fixed structure of this landfill yard is staggered to be uniformly arranged in the region strengthening band in the middle of side slope (1) or in pit (11).
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| CN105835355A (en) * | 2016-05-28 | 2016-08-10 | 浙江双林机电科技有限公司 | Concrete protection lining production equipment |
| CN108086365B (en) * | 2017-12-19 | 2019-02-15 | 浙江科技学院 | Self-repairing refuse landfill impervious layer and self-repairing impervious method thereof |
| CN111069466B (en) * | 2019-12-26 | 2021-03-23 | 南京腾亚精工科技股份有限公司 | Continuous forming die for manufacturing triangular cramp nail and continuous forming triangular cramp nail |
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