CN217710882U - Anti structure of subsiding of landfill - Google Patents

Abstract

The utility model discloses an anti structure of subsiding of landfill, pile the body including rubbish, vertical row oozes and leads the gas well, cover geotechnological cloth layer and the cover rete on the rubbish piles the body, vertical row oozes and is equipped with a plurality of through-holes on the wall of a well of leading the gas well hypomere, vertical row oozes and leads the gas well and pass the rubble district in proper order, the clay layer, geotechnological cloth layer and cover rete and make its vertical row ooze the gas well upper segment and expose in the atmosphere, cover the rete and vertical row ooze and be connected through the elastic connection body between the gas well upper segment, the elastic connection body is that the port diameter is little, the big taper of lower port diameter, the body wall of elastic connection body is telescopic fold structure. The utility model discloses an anti structure of subsiding of landfill, simple structure, processing make things convenient for low in cost, solved because of the rubbish pile body subsides, the sideslip arouses cover the membrane with vertical row ooze the gas guide well junction by tensile tear damaged technological problem, avoid the wasting of resources, stench pollution and fire explosion scheduling problem that the unordered loss of landfill gas arouses.

Description

Anti structure of subsiding of landfill

Technical Field

The utility model relates to a, especially, anti structure of subsiding of landfill.

Background

With the construction and operation of the first sanitary landfill of the domestic garbage landfill of Tianziling of Hangzhou city in 1991, the landfill disposal of the domestic garbage becomes a main disposal mode which is more economical compared with the incineration disposal in China. However, with the development of national economy, the original landfill site is filled continuously, land resources are in short supply, and incineration plants are built successively, so that the original domestic garbage enters a zero-landfill era, and the original landfill site also enters a stage of treating and sealing. Because domestic garbage in the landfill site has long and complicated biological and chemical reactions and gravitational pressure sedimentation, no matter the landfill site is operated or the landfill site after being sealed, garbage percolate and landfill gas are generated in a long time, a percolate and landfill gas guide and discharge well needs to be established in the garbage pile body to smoothly guide and discharge the percolate or the landfill gas in the garbage pile body, so that the stability and the safety of the garbage pile body are ensured; meanwhile, the leachate has complex components, high pollutant concentration, high toxicity and high treatment difficulty, and the landfill gas is also a malodorous gas with complex components, toxicity, harm, flammability and explosiveness, so a certain number of transverse and vertical drainage wells are arranged in the garbage stack body to smoothly drain the leachate and the landfill gas, and meanwhile, the sealing and covering of the landfill stack body are required to be done to ensure that the leachate and the landfill gas are orderly drained, treated or utilized, simultaneously prevent rainwater from deeply penetrating into the garbage stack body, reduce the generation amount of the leachate and reduce the landslide risk caused by the infiltration of a large amount of rainwater into the stack body. And because of the biochemical action of the landfill body, the continuous export of percolate and landfill gas, and the gravity compression sedimentation of the landfill body, the landfill body in operation or the landfill body covered by the landfill body after being sealed still has continuous sedimentation for many years, and according to the operation management experience of the landfill field of the research and development team, the vertical guide and drainage wells (generally HDPE pipes) do not have synchronous or same sedimentation along with the vertical sedimentation of the landfill body, if the covering film is directly connected with the vertical guide and drainage wells, the covering film is inevitably sedimented along with the sedimentation of the landfill body, so that the connection part of the covering film and the vertical guide and drainage wells is very easy to stretch, tear and damage, the sealing property and the formal integrity of the covering film are damaged, particularly, the landfill field covered by the landfill field is sealed, and once the covering film is damaged, the subsequent drainage difficulty is very high because the upper part of the covering film has a greening soil layer of 50 cm.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an anti structure of subsiding of landfill, a structure is simple, the processing is convenient low in cost, solved because of the rubbish heap body subsides, the cover membrane that the sideslip arouses is being torn and damaged by the tensile at the air guide well junction of oozing with vertical row, can ensure the integrality and the seal that cover the membrane, avoid the wasting of resources that the unordered loss of landfill gas arouses, stench pollutes and fire explosion, avoid rubbish heap body peripheral precipitation to ooze the excessive polluted environment scheduling problem of filtrating outward through covering membrane damaged infiltration rubbish heap body or rubbish heap body.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an anti structure that subsides of landfill yard, including the rubbish heap body, bury underground the vertical row who leads the gas well in the rubbish heap body, cover geotechnological cloth layer and the covering film layer on the rubbish heap body from bottom to top in proper order, the lower extreme of vertical row oozes and leads the gas well is equipped with the blind plate, be located the wall of a well of the vertical row oozes and leads the gas well hypomere in the rubbish heap and be equipped with a plurality of through-holes that are used for air guide and infiltration, the periphery of this vertical row oozes and leads the gas well hypomere is equipped with the gabion wire netting, the regional intussuseption between gabion wire netting and the vertical row oozes and leads the gas well hypomere is filled with the rubble, it is filled with the clay layer to fill between rubble upper end and the geotechnological cloth layer, vertical row oozes and leads the gas well and passes rubble district, clay layer, geotechnological cloth layer and covering film layer in proper order and make its vertical row ooze the gas well upper segment of leading expose in the atmosphere, the elastic connector is connected through elastic connector, the conical shape that the upper port diameter is little, the elastic connector wall is the telescopic fold structure.

The upper port is connected with the outer wall in the middle of the upper section of the vertical drainage and seepage air guide well through fusion welding, and the lower port is connected with the upper surface of the covering film layer through fusion welding.

The fusion welding part of the upper port is provided with fusion welding stuffing and a stainless steel hoop.

The upper port of leading the gas well is equipped with the flange blind plate to vertical row oozes, is equipped with landfill gas collecting pipe and filtration liquid on the flange blind plate and takes out the calandria, the lower extreme that filtration liquid took out the calandria is equipped with stealthily dirty pump, and this stealthily dirty pump is located the bottom that the gas well was led to vertical row oozes.

Compared with the prior art, the beneficial effects of the utility model are that: by adopting the technical scheme, the broken stone is filled in the area between the gabion wire mesh and the lower section of the vertical seepage drainage gas guide well, so that firstly, the drainage of percolate and landfill gas can be improved, the garbage is prevented from blocking through holes of a well wall, and secondly, the influence of the settlement and transverse movement of a garbage pile on the vertical seepage drainage gas guide well can be buffered; the cover film layer is connected with the upper section of the vertical seepage drainage gas guide well through the elastic connecting body, the elastic connecting body is in a conical shape with a small upper port diameter and a large lower port diameter, the body wall of the elastic connecting body is of a telescopic folded structure, the connecting structure is simple in structure and low in manufacturing cost, when the vertical seepage drainage gas guide well is settled or transversely moved due to a garbage pile body, the elastic connecting body can stretch and deform along with the elastic connecting body, the conical folded elastic connecting body structure can resist settlement and transverse movement of the garbage pile body, the stretching deformation amount of the elastic connecting body is greatly increased, the structure is simple, the processing is convenient, the manufacturing cost is low, the technical problem that the cover film caused by settlement and transverse movement of the garbage pile body is stretched and torn at the joint of the vertical seepage drainage gas guide well to damage the cover film is solved, the problems that the resource waste, odor pollution and fire explosion are caused by disordered dissipation of landfill gas are avoided, and the problem that the periphery of the garbage pile body is prevented from infiltrating the garbage pile body through the cover film damage or the seepage filtrate overflows to pollute the environment.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a top view of the elastomeric connector portion of FIG. 1;

FIG. 3 is a cross-sectional view of a particular embodiment in a final state.

Detailed Description

In order to make the technical solution of the present invention clearer, the present invention is described in detail below with reference to the accompanying drawings 1 to 3. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1

The utility model relates to an anti structure of subsiding of landfill yard refers to attached drawing 1-2, including rubbish pile 1, bury underground the vertical row who buries in rubbish pile 1 and oozes gas guide well 5 (generally be the HDPE pipe), cover geotechnological cloth layer 3 and cover rete 4 (preferred HDPE/LLDPE material, thickness is about 0.7 mm) on rubbish pile 1 from bottom to top in proper order, the lower extreme that vertical row oozes gas guide well 5 is equipped with bottom blind plate 13, be located the vertical row who oozes gas guide well hypomere 5-2's of rubbish pile 1 on the wall of a well and be equipped with a plurality of through-holes 5-3 that are used for air conduction and infiltration, this vertical row oozes gas guide well hypomere 5-2's periphery and be equipped with gabion wire netting 11, the regional intussuseption between gabion wire netting 11 and the vertical row oozes gas guide well hypomere 5-2 is filled with rubble 12, fill between rubble 12 upper end and the geotechnological cloth layer 3 has clay layer 2, vertical row oozes gas guide well 5 passes in proper order and oozes gas guide well wall 12 district, the fold layer 2, geotechnological cloth layer 3 and cover the atmospheric section and cover the clay layer 3 and make it ooze gas guide well upper end 5-1 through the elastic connection body wall of air guide well, 8 upper end of the elastic connection body is the elastic connection body through the big end of the elasticity connector 8, the elasticity connector, 8-8 diameter of the elasticity connector is the elasticity port of the elasticity connector.

Preferably, the upper port 8-1 is connected with the outer wall of the middle part of the upper section 5-1 of the vertical drainage and gas guide well through a fusion welding or stainless steel hoop 10, and the lower port 8-2 is connected with the upper surface of the covering film layer 4 through extrusion welding, hot melting or gluing. Preferably, the fusion welding part of the upper port 8-1 is provided with fusion welding plugs 9 and stainless steel anchor ears 10. The upper port of the vertical seepage drainage gas well 5 is provided with a flange blind plate 6, the flange blind plate 6 is provided with a landfill gas collecting pipe 7 and a percolate drainage pipe 15, the lower end of the percolate drainage pipe 15 is provided with a submersible sewage pump 14, and the submersible sewage pump 14 is positioned at the bottom of the vertical seepage drainage gas well. The landfill gas is collected by a landfill gas collecting pipe 7 and enters a landfill gas treatment device (the landfill gas treatment device is the prior art); the percolate enters a percolate treatment device (the percolate treatment device is the prior art) through a percolate drainage pipe 15.

Example 2

Preferably, when the dump 1 of example 1 is not added and is sufficiently settled, the dump 1 is in a relative stable period, the dump is shaped and covered at the end, the geotextile layer is replaced by a gas discharge layer 16 (which can be 30 cm thick gravel or a composite geotextile drainage net not less than 5mm thick), and the gas discharge layer functions in the final covering system to provide a stable working surface and a supporting surface, so that a barrier layer 17 can be laid thereon and landfill gas generated in the landfill site is collected; the covering film layer 4 is replaced by an impermeable layer 17 (the impermeable layer is called as another covering film layer at this time, the material and the action of the impermeable layer are the same as those of the covering film layer), the impermeable layer is generally regarded as the most important component in a final covering system, the direct action of the impermeable layer is to block water from permeating the covering system, the indirect action of the impermeable layer is to improve the water storage and drainage capacity of each layer above the impermeable layer, and finally the water is removed through runoff, transpiration or internal drainage, the impermeable layer also controls upward migration of landfill gas, the impermeable layer can be made of artificial impermeable materials or natural clay, an HDPE/LLDPE geomembrane is generally adopted at present, the thickness of the geomembrane is 1-1.5mm, and protective layers such as geotextile and the like can be arranged above and below the geomembrane to prevent the geomembrane from being damaged; the impermeable layer is additionally provided with a drainage layer 18 (the drainage layer is made of 30 cm of broken stone with good water conductivity or a composite geotechnical drainage net with the thickness not less than 5 mm) and a greening soil layer 19, the drainage layer is used for removing infiltrated rainwater by adopting materials with high permeability, the drainage layer is preferably made of 30 cm of broken stone with good water conductivity or a composite geotechnical drainage net with the thickness not less than 5mm, the greening soil layer 19 is positioned on the drainage layer 18 and used for planting plants and restoring ecology, preferably, the greening soil layer 19 sequentially comprises a supporting soil layer 19-1 (the thickness of the supporting soil is 450 mm), a nutrient soil layer 19-2 and a greening layer 19-3 from bottom to top, the total thickness of the soil layer is not less than 50cm, the supporting soil layer is used for supporting the nutrient soil layer above, the most commonly used materials are soil, the nutrient soil layer is used for promoting vegetation growth and providing support and nutrients for vegetation growth, so that the impermeable layer is usually local soil. The elastic connection body 8 is covered with clay, see in particular fig. 3.

Claims (4)

1. The utility model provides an anti structure that subsides of landfill yard, including rubbish heap body (1), bury underground vertical row who leads gas well (5) in rubbish heap body (1), cover geotechnological cloth layer (3) and cover rete (4) above rubbish heap body (1) in proper order from bottom to top, the lower extreme that leads gas well (5) is oozed to vertical row is equipped with bottom blind plate (13), be located the vertical row who stacks in rubbish heap body (1) and ooze and be equipped with a plurality of through-holes (5-3) that are used for air guide and infiltration on the wall of a well of leading gas well hypomere (5-2), the periphery that this vertical row oozes and leads gas well hypomere (5-2) is equipped with gabion wire netting (11), gabion wire netting (11) and the regional intussuseption between leading gas well hypomere (5-2) of vertical row are filled with rubble (12), it has clay layer (2) to fill between rubble (12) upper end and geotechnological cloth layer (3), vertical row oozes and leads gas well (5) to pass rubble (12) district in proper order, clay layer (2), geotechnological cloth layer (3) and make its atmospheric pressure leak, it expose in the atmospheric pressure section (5-1), it is characterized in that it: the covering film layer (4) is connected with the upper section (5-1) of the vertical drainage and gas guide well through an elastic connecting body (8), the elastic connecting body (8) is in a conical shape with a small diameter at an upper port (8-1) and a large diameter at a lower port (8-2), and the body wall of the elastic connecting body (8) is in a telescopic fold structure.

2. The anti-settling structure for refuse landfills according to claim 1, wherein: the upper port (8-1) is connected with the outer wall in the middle of the upper section (5-1) of the vertical drainage and gas guide well through fusion welding, and the lower port (8-2) is connected with the upper surface of the covering film layer (4) through fusion welding.

3. The anti-settling structure for refuse landfills according to claim 2, wherein: the fusion welding part of the upper port (8-1) is provided with fusion welding plugs (9) and stainless steel hoops (10).

4. An anti-settling structure for a landfill according to any one of claims 1 to 3, wherein: the upper port of vertical row oozes and leads gas well (5) is equipped with flange blind plate (6), is equipped with landfill gas collecting pipe (7) and filtration liquid on flange blind plate (6) and takes out calandria (15), the lower extreme of filtration liquid take out calandria (15) is equipped with stealthily dirty pump (14), and this stealthily dirty pump (14) are located the bottom of vertical row oozes and leads the gas well.

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