Anti-settling pumping and drainage vertical shaft

Abstract

The utility model provides an anti-settling pumping and drainage vertical shaft, which relates to the technical field of refuse landfill pollution control, and comprises a pumping and drainage well pipe which penetrates through a closure structure layer and is vertically arranged, and a telescopic substrate is arranged between the outer side wall of the pumping and drainage well pipe positioned on the upper side of the closure structure layer and the upper surface of the closure structure layer; the telescopic substrate comprises a vertical section telescopic substrate sleeved on the outer side of the pump drainage well pipe and a plurality of sections of horizontal section telescopic substrates connected with the lower end of the vertical section telescopic substrate in sequence; the upper ends of the vertical section telescopic substrates are tightly connected with the outer wall of the pumping and drainage well pipe, the multiple horizontal section telescopic substrates extend downwards in a stacked mode after being connected, and the last horizontal section telescopic substrate is fixedly connected with the upper surface of the field sealing structure layer. According to the utility model, the problem that the joint of the traditional pumping and draining vertical shaft and the closure structure layer is extremely easy to crack and damage due to differential settlement of the refuse landfill is solved, and the integrity of a closure system is ensured, so that the safety and long-term effectiveness of operation and maintenance of the landfill are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of landfill pollution control, in particular to an anti-sedimentation pumping shaft. Background Art

[0002] For a long time, sanitary landfill has been the main way to harmlessly dispose of domestic waste in my country. Based on design experience, the average service life of domestic waste landfills in my country is about 15 years. Based on this calculation, the vast majority of landfills built before 2010 in my country have basically reached the end of their service life and are in urgent need of closure and management.

[0003] Landfill closure is an effective way to isolate the landfill waste from the surrounding environment through the laying of anti-seepage materials, and is also the main means of harmless management of existing landfills in my country. During the landfill closure process, it is necessary to build various functional drainage shafts to orderly drain the harmful gases and harmful leachate generated inside the garbage pile and treat them centrally, so as to maintain the stability and safety of the entire garbage pile.

[0004] In conventional methods, in order to ensure the integrity of the closure system, various vertical shafts and anti-seepage systems are often welded with rigid structures to prevent gas and other pollutants from leaking at the connection between the two, thereby ensuring the integrity of the entire closure system. However, this conventional structural method, when faced with uneven settlement of the garbage pile, causes the welding parts of the vertical shafts and the anti-seepage system to easily become stress concentration points, resulting in an unfavorable situation of welding point pulling and tearing. This damage phenomenon is very common, especially for domestic waste landfills in my country with high moisture content, high organic matter content, high degradation rate and settlement rate, and it also greatly increases the risk of later operation and maintenance of the landfill.

[0005] In summary, the existing single-structure vertical drainage shaft is less effective in dealing with landfill subsidence, and an anti-subsidence vertical drainage shaft with a simple structure, easy operation, convenient on-site trial production and significant effect is urgently needed to be developed. Utility Model Content

[0006] In view of the technical problems existing in the background technology, this utility model patent provides a subsidence-resistant drainage shaft to solve the problem of uneven settlement commonly found in landfills damaging the connection between the landfill drainage shaft pipe and the sealing structure layer, thereby ensuring the integrity, effectiveness and long-term safety of the landfill sealing system.

[0007] To achieve the above purpose, the technical solution of the utility model is:

[0008] An anti-settling vertical pumping shaft, comprising: a pumping well pipe vertically arranged through a sealing structure layer, a telescopic substrate arranged between the outer side wall of the pumping well pipe located on the upper side of the sealing structure layer and the upper surface of the sealing structure layer;

[0009] The telescopic substrate comprises a vertical telescopic substrate sleeved on the outside of the pumping well pipe and a plurality of horizontal telescopic substrates sequentially connected to the lower end of the vertical telescopic substrate;

[0010] The upper end of the vertical telescopic substrate is tightly connected to the outer wall of the pumping well pipe, and multiple horizontal telescopic substrates are connected and extend downward in a stacked manner, and the last horizontal telescopic substrate is fixedly connected to the upper surface of the sealing structure layer.

[0011] As a further improvement of the utility model, a sealing gasket is provided between the inner side of the upper end of the vertical segment telescopic substrate and the outer wall of the pumping well pipe.

[0012] As a further improvement of the utility model, an adjustable pipe clamp is provided on the outer side of the upper end of the vertical section telescopic substrate, and the vertical section telescopic substrate and the sealing gasket are tightly connected to the outer side of the pumping well pipe.

[0013] As a further improvement of the present invention, the lower end of the vertical segment telescopic substrate is fully welded to the horizontal segment telescopic substrate via telescopic welding points.

[0014] As a further improvement of the utility model, the telescopic substrates of each horizontal section are fully welded and connected through telescopic welding points.

[0015] As a further improvement of the utility model, the last horizontal section of the telescopic substrate is fully welded to the upper surface of the enclosure structure layer through sealing welding points.

[0016] As a further improvement of the present invention, the vertical segment telescopic substrate, the horizontal segment telescopic substrate and the enclosure structure layer are made of the same material.

[0017] As a further improvement of the present invention, the number of segments of the horizontal segment telescopic substrate is an even number.

[0018] As a further improvement of the present invention, the lower end of the vertical segment telescopic substrate is connected to the inner end of the first horizontal segment telescopic substrate, the outer end of the first horizontal segment telescopic substrate is connected to the outer end of the second horizontal segment telescopic substrate located below it, the inner end of the second horizontal segment telescopic substrate is connected to the inner end of the next horizontal segment telescopic substrate located below it, and so on until it is connected to the last horizontal segment telescopic substrate, and the inner end of the last horizontal segment telescopic substrate is connected to the upper surface of the sealing structure layer.

[0019] As a further improvement of the utility model, the outer end of the telescopic base plate of the horizontal section of the lower layer is extended outwards than the outer end of the telescopic base plate of the horizontal section of the adjacent upper layer.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] Compared with the traditional landfill drainage shaft and the sealing structure layer, which adopts rigid welding at the joint, when facing uneven settlement of the landfill, stress concentration and fracture at the joint are prone to occur, thus affecting the integrity of the sealing system. The utility model arranges a telescopic substrate between the drainage shaft pipe and the sealing structure layer to form a telescopic closed casing, aiming to solve the unfavorable situations such as the poor ability of the original well construction method to resist uneven settlement of the garbage pile and the reduced effectiveness of long-term sealing through a simple structural form.

[0022] The main materials used in the utility model are consistent with the sealing structure layer, so the construction difficulty and cost are not much different from the traditional well construction project. The anti-settling basic structure formed can be completed by extrusion welding at the construction site; the adjustable pipe clamp is easy to install, has little impact on the telescopic base plate, cooperates with the sealing gasket to have better sealing performance, and can be moved and replaced at any time, thereby ensuring the long-term effectiveness of the sealing effect.

[0023] In addition to utilizing the telescopic properties of its own structure, the utility model is fully capable of coping with the occurrence of excessive settlement of garbage piles by moving the sealing gasket, the adjustable pipe clamp and the vertical telescopic base plate in the position of the drainage well pipe. It has strong adjustability and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the complete structure of an anti-settling vertical pumping shaft disclosed in an embodiment of the utility model;

[0025] Figure 2 A top view of an anti-settling vertical pumping shaft structure disclosed in an embodiment of the utility model;

[0026] Figure 3 A schematic diagram of the detailed structure of a pumping well pipe, a sealing gasket and a vertical section telescopic substrate disclosed in an embodiment of the utility model;

[0027] Figure 4 The utility model discloses a schematic diagram of the outer end connection structure of the upper and lower horizontal sections of telescopic substrates according to an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Pumping well pipe; 2. Sealing gasket; 3. Adjustable pipe clamp; 4. Telescopic base plate; 4-1. Vertical section telescopic base plate; 4-2. Horizontal section telescopic base plate; 5. Sealing welding point; 6. Telescopic welding point; 7. Sealing structure layer; 8. Garbage pile. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0033] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0034] like Figure 1 As shown, the utility model provides an anti-settling vertical pumping shaft, comprising: a pumping well pipe 1 vertically arranged through a sealing structure layer 7, a telescopic substrate 4 is arranged between the outer side wall of the pumping well pipe 1 located on the upper side of the sealing structure layer 7 and the upper surface of the sealing structure layer 7;

[0035] The telescopic substrate 4 includes a vertical telescopic substrate 4-1 sleeved on the outside of the pumping well pipe 1 and a plurality of horizontal telescopic substrates 4-2 sequentially connected to the lower end of the vertical telescopic substrate 4-1;

[0036] The upper end of the vertical telescopic substrate 4-1 is tightly connected to the outer wall of the pumping well pipe 1, and multiple horizontal telescopic substrates 4-2 are connected and extend downward in a stacked manner. The last horizontal telescopic substrate 4-2 is fixedly connected to the upper surface of the sealing structure layer 7.

[0037] in,

[0038] like Figure 3 As shown, a sealing gasket 2 is provided between the inner side of the upper end of the vertical segment telescopic substrate 4-1 and the outer wall of the drainage well pipe 1 to increase the sealing performance of the overall structure, and an adjustable pipe hoop 3 is provided on the outer side of the upper end of the vertical segment telescopic substrate 4-1, and the adjustable pipe hoop 3 tightly connects the vertical segment telescopic substrate 4-1 and the sealing gasket 2 to the outer side of the drainage well pipe 1. At the same time, by moving the height of the sealing gasket 2, the adjustable pipe hoop 3 and the vertical segment telescopic substrate 4-1 outside the drainage well pipe 1, the situation where the garbage pile 8 settles too much can be dealt with.

[0039] The lower end of the vertical telescopic substrate 4-1 is fully welded to the horizontal telescopic substrate 4-2 through the telescopic welding point 6, and the horizontal telescopic substrates 4-2 are fully welded to each other through the telescopic welding point 6. The last horizontal telescopic substrate 4-2 is fully welded to the upper surface of the sealing structure layer 7 through the sealing welding point 5. The stacked structure formed after the welding of multiple horizontal telescopic substrates 4-2 is completed can be regarded as a wavy jacket layer, which has elasticity and can cope with the impact of the settlement of the garbage pile 8 on the drainage well pipe 1.

[0040] like Figure 2 As shown, each horizontal segment telescopic substrate 4-2 is square or rectangular, with a central circular hole in the middle, and is sleeved on the outside of the pumping well pipe 1 through the circular hole; the edge of the central circular hole is the inner end of the horizontal segment telescopic substrate 4-2, and the square or rectangular side of the horizontal segment telescopic substrate 4-2 is the outer end of the horizontal segment telescopic substrate.

[0041] Furthermore,

[0042] The vertical segment telescopic substrate 4-1 and the horizontal segment telescopic substrate 4-2 are made of the same material as the enclosure structure layer 7 to ensure effective welding, for example, they are all made of HDPE geomembrane.

[0043] The pumping well pipe 1 is a HDPE solid wall pipe or a metal solid wall pipe.

[0044] The sealing gasket 2 is made of rubber material.

[0045] The adjustable pipe clamp 3 is made of stainless steel.

[0046] The sealing weld 5 and the expansion weld 6 are both realized by extrusion welding.

[0047] Furthermore,

[0048] The number of segments of the horizontal segment telescopic substrate 4 - 2 is an even number, ensuring that the inner end of the last segment telescopic substrate 4 - 2 is welded to the upper surface of the sealing structure layer 7 and close to the outer wall of the pumping well pipe 1 .

[0049] The lower end of the vertical segment telescopic substrate 4-1 is connected to the inner end of the first horizontal segment telescopic substrate 4-2, the outer end of the first horizontal segment telescopic substrate 4 is connected to the outer end of the second horizontal segment telescopic substrate 4 located below it, the inner end of the second horizontal segment telescopic substrate 4 is connected to the inner end of the next horizontal segment telescopic substrate 4 located below it, and so on until it is connected to the last horizontal segment telescopic substrate 4-2, and the inner end of the last horizontal segment telescopic substrate is connected to the upper surface of the sealing structure layer 7.

[0050] like Figure 4 As shown, the outer end of the lower horizontal segment telescopic substrate 4-2 is extended outwardly than the outer end of the adjacent upper horizontal segment telescopic substrate to facilitate welding operation.

[0051] Preferably,

[0052] like Figure 2 As shown, each horizontal segment telescopic substrate 4-2 is square or rectangular. From top to bottom, the distance between the outer end of the horizontal segment telescopic substrate and the pumping well pipe 1 is farther, that is, the side length of the upper horizontal segment telescopic substrate is smaller than the side length of the lower horizontal segment telescopic substrate.

[0053] Embodiment: The sealing structure layer 7 and the drilling engineering work are completed at the construction site, and the installation of the pumping and drainage well pipe 1 is completed. In this embodiment, the pumping and drainage well pipe 1 adopts a HDPE solid wall pipe.

[0054] Step 1: prefabricate the telescopic substrate 4 at the construction site. The telescopic substrate 4 is made of HDPE geomembrane. The prefabrication process includes: cutting multiple groups of horizontal telescopic substrates 4-2 and vertical telescopic substrates 4-1 according to the estimated settlement amount;

[0055] Step 2: Using extrusion welding, first complete the welding of the sealing structure layer 7 and the bottom horizontal section telescopic substrate 4-2 at the construction site. The formed welding point is the sealing welding point 5, and the sealing welding point 5 is fully welded;

[0056] Step 3, welding between multiple groups of horizontal segment telescopic substrates 4-2 is completed in sequence from bottom to top, and the formed welding point is telescopic welding point 6, and telescopic welding point 6 is fully welded; during welding, the lower horizontal segment telescopic substrate 4-2 is extended by 100mm than the upper horizontal segment telescopic substrate 4-2 adjacent thereto to facilitate the welding operation;

[0057] Step 4, using extrusion welding to finally complete the welding between the uppermost horizontal segment telescopic substrate 4-2 and the vertical segment telescopic substrate 4-1, the formed welding point is the telescopic welding point 6, and the telescopic welding point 6 is fully welded;

[0058] Step 5: Install the sealing gasket 2 at a suitable height of the pumping well pipe 1, and the sealing gasket 2 is made of rubber; and tighten and fix the upper part of the vertical section telescopic base plate 4-1 and the sealing gasket 2 through the adjustable pipe hoop 3, and the adjustable pipe hoop 3 is made of stainless steel;

[0059] Step 6: After welding, multiple groups of horizontal telescopic substrates 4-2 form a wavy sleeve layer, which has elasticity. The sealing gasket 2, the adjustable pipe clamp 3 and the vertical telescopic substrate 4-1 can be moved in the position of the pumping well pipe 1 to cope with the excessive settlement of the garbage pile 8.

[0060] Advantages of the utility model:

[0061] The pumping well pipe of the utility model serves as the main pipeline for discharging pollutants, and multiple groups of horizontal segment telescopic substrates, vertical segment telescopic substrates and sealing structure layers are welded to each other through telescopic welding points and sealing welding points, thereby forming a wavy structure and a closed jacket layer with a certain degree of telescopicity.

[0062] The upper part of the sealing sleeve layer of the vertical shaft of the utility model, that is, the upper part of the vertical section telescopic base sheet is fixed to the well pipe through an adjustable pipe hoop. A sealing gasket is installed between the vertical section telescopic base sheet and the adjustable pipe hoop, thereby increasing the sealing performance of the overall design.

[0063] The vertical drainage shaft of the utility model can also cope with the excessive settlement of the garbage pile by moving the sealing gasket, the adjustable pipe clamp and the vertical section telescopic base plate in the position of the drainage shaft pipe, thereby further ensuring the overall airtightness of the drainage shaft construction.

[0064] The utility model aims at the serious and difficult problems such as uneven settlement and pollutant drainage in landfills, and provides an anti-sedimentation drainage shaft. By optimizing the structure and use of the shaft, the utility model overcomes the problem that the connection between the traditional drainage shaft and the sealing structure layer is very easy to be torn and damaged due to the uneven settlement of the landfill, and ensures the integrity of the sealing system, thereby improving the safety and long-term effectiveness of landfill operation and maintenance.

[0065] The above are only preferred embodiments of the present invention and do not limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-settling vertical pumping shaft, characterized in that: include: A vertically arranged pumping well pipe passes through the enclosure structure layer, and a telescopic substrate is arranged between the outer side wall of the pumping well pipe located on the upper side of the enclosure structure layer and the upper surface of the enclosure structure layer; The telescopic substrate comprises a vertical telescopic substrate sleeved on the outside of the pumping well pipe and a plurality of horizontal telescopic substrates sequentially connected to the lower end of the vertical telescopic substrate; The upper end of the vertical telescopic substrate is tightly connected to the outer wall of the pumping well pipe, and multiple horizontal telescopic substrates are connected and extend downward in a stacked manner, and the last horizontal telescopic substrate is fixedly connected to the upper surface of the sealing structure layer.

2. The anti-settling vertical pumping shaft according to claim 1, characterized in that: A sealing gasket is provided between the inner side of the upper end of the vertical section telescopic substrate and the outer wall of the pumping well pipe.

3. The anti-settling vertical pumping shaft according to claim 2, characterized in that: An adjustable pipe clamp is provided on the outer side of the upper end of the vertical section telescopic substrate, and the vertical section telescopic substrate and the sealing gasket are tightly clamped and connected to the outer side of the pumping well pipe.

4. The anti-settling vertical pumping shaft according to claim 1, characterized in that: The lower end of the vertical section telescopic substrate is fully welded to the horizontal section telescopic substrate through telescopic welding points.

5. The anti-settling vertical pumping shaft according to claim 1, characterized in that: Each horizontal section of the telescopic substrate is fully welded and connected through telescopic welding points.

6. The anti-settling vertical pumping shaft according to claim 1, characterized in that: The last horizontal section telescopic substrate is fully welded to the upper surface of the enclosure structure layer through sealing welding points.

7. The anti-settling vertical pumping shaft according to claim 1, characterized in that: The vertical segment telescopic substrate, the horizontal segment telescopic substrate and the enclosure structure layer are made of the same material.

8. The anti-settling vertical pumping shaft according to claim 1, characterized in that: The number of segments of the horizontal segment telescopic substrate is an even number.

9. The anti-settling vertical pumping shaft according to claim 8, characterized in that: The lower end of the vertical telescopic substrate is connected to the inner end of the first horizontal telescopic substrate, the outer end of the first horizontal telescopic substrate is connected to the outer end of the second horizontal telescopic substrate located below it, the inner end of the second horizontal telescopic substrate is connected to the inner end of the next horizontal telescopic substrate located below it, and so on until it is connected to the last horizontal telescopic substrate, and the inner end of the last horizontal telescopic substrate is connected to the upper surface of the sealing structure layer.

10. The anti-settling vertical pumping shaft according to claim 9, characterized in that: The outer end of the horizontal segment telescopic substrate of the lower layer is extended outwards than the outer end of the horizontal segment telescopic substrate of the upper layer that is expected to be adjacent.

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