Connection structure for percolate drainage pipe and dam penetrating pipe of solid waste disposal site and construction method

Abstract

The invention discloses a connection structure for a percolate drainage pipe and a dam penetrating pipe of a solid waste disposal site and a construction method. According to the connection structure, the percolate drainage pipe and the dam penetrating pipe are in butt joint through a flexible connection manner; a side slope seepage-proof film layer and a bank bottom seepage-proof film layer of the solid waste disposal site cover the upper side and the lower side of the dam penetrating pipe; the seepage-proof film layers are hotly melted and welded at the periphery of the dam penetrating pipe, and a hotly-melted and welded region is used for tightly clamping the seepage-proof film layers on the outer side of the dam penetrating pipe by stainless steel hoop rings. The construction method comprises the following steps: firstly, utilizing a two-path monorail welding method, wherein a first path is used for hotly melting and welding the seepage-proof film layers on the dam penetrating pipe and a second path is used for covering a connector protective film on a first path of holt-melting and welding connector and fully welding one circle of a monorail; then, covering a flexible connection film on the holt-melting and welding connector of the dam penetrating pipe and hooping the two ends of the flexible connection film by the stainless steel hoop rings to complete construction. The connection structure and the construction method can guarantee the working stability of the percolate drainage pipe and the dam penetrating pipe, and the overhauling and maintenance can be conveniently carried out at a later period.

Description

technical field [0001] The invention belongs to the technical field of arrangement structure and construction of a solid waste treatment site, and in particular relates to a connection structure of a leachate guide pipe and a dam-piercing pipe and a construction method thereof. Background technique [0002] In recent years, in order to reduce the environmental pollution caused by municipal solid waste, cities above the county level have successively invested a large amount of funds in the construction of domestic waste sanitary landfills to replace the previous simple landfills. Among them, anti-seepage in the reservoir area, leachate collection and drainage system, and leachate treatment system are important components of the harmless municipal solid waste sanitary landfill, and the anti-seepage effect directly affects the harmless treatment effect of domestic solid waste. After a sampling survey, it was found that after more than 90% of the landfills were put into use, lea...

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Problems solved by technology

[0004] (1) The working space for welding construction around the 360-degree circumference of the dam-piercing pipe is not considered; the narrow working space makes it difficult to weld the side of the dam-piercing pipe close to the foundation cushion of the reservoir bottom, and the interface close to the foundation cushion of the reservoir bottom is often not welded firmly. In place, welding quality is difficult to guarantee

[0005] (2) The difference in shear force at the connection between the dam-piercing pipe and the leachate drainage main pipe at the bottom of the reservoir is not considered

With the continuous increase of the garbage pile, there will be significant differences between the settlement change of the reservoir bottom and the settlement change of the garbage dam, which will lead to deformation and fracture at the interface between the leachate drainage pipe at the bottom of the reservoir and the dam piercing pipe. The continuous entry of garbage will block the dam pipe, and in severe cases, the leachate drainage system in the entire reservoir area will be scrapped

[0006] (3) The existing design is not convenient for inspection and maintenance in the operation stage

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