Anti-sedimentation landfill gas collecting vertical shaft for landfill: Fid-Bau Portal

Anti-sedimentation landfill gas collecting vertical shaft for landfill

LI TIESHUAN / XIE XIN / LI DALONG / CHENG GONG / XUE GUANGRU

The invention provides an anti-sedimentation landfill gas collecting vertical shaft for a landfill, which comprises a gas collecting well extending to the bottom surface of the landfill along the longitudinal direction; the drainage pipe extends into the bottom of the gas collecting well from top to bottom, and gravels are filled between the drainage pipe and the gas collecting well; one end of the stabilizing pipe is detachably connected to the end, extending out of the covering face, of the drainage pipe, and the other end of the stabilizing pipe extends into the position below the covering face through bending and correspondingly communicates with the pre-buried gas collecting well connecting pipe; and clay is tamped, and the gas collecting well is sealed through the tamped clay at the wellhead of the gas collecting well. Part of pile settlement deformation stress can be absorbed through gravel energy dissipation, meanwhile, stress is evenly transmitted, and the settlement stress is prevented from damaging the drainage pipe. The stabilizing pipes at the two ends are connected through the corrugated silica gel pipe, so that reliable connection between the gas collection connecting pipe and the vertical shaft can be guaranteed and normal and stable structure functions can be maintained when a pile body settles unevenly.

本发明提供一种填埋场防沉降填埋气集气竖井，包括：集气井，集气井沿纵向延伸至填埋场的底面；排导管，排导管自上而下伸入集气井底部，在排导管与集气井之间填充砾石；稳定管，稳定管的一端以可拆卸的方式连接在排导管伸出覆盖面的一端，另一端通过折弯伸入覆盖面以下，并对应连通预埋的集气井连接管；夯实粘土，在集气井的井口处，通过夯实粘土对集气井进行密封。通过碎石消能可吸收部分堆体沉降变形应力，同时均匀传递应力，避免沉降应力损坏排导管；两端稳定管通过波纹硅胶管连接，在堆体不均匀沉降时，能够保证集气连接管与竖井之间保持可靠连接，保持结构功能正常稳定。

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