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Refuse landfill flexible barrier wall construction method suitable for high water level condition
The invention relates to a refuse landfill flexible barrier wall construction method suitable for a high water level condition. The bottom of a flexible barrier wall is embedded into an impervious layer at the bottom of a refuse landfill; and a backfill filler layer is backfilled in the flexible barrier wall by a dry method. Rich underground water systems are utilized, so that the backfill filler is gradually solidified in the later process, and particularly, the modified bentonite is gradually hydrated and expanded to be bonded into a thick colloid to be further solidified with the raw material soil, so that the anti-seepage performance is gradually improved, and the permeability coefficient of the wall body is guaranteed; for a site with shallow construction depth and good geological conditions, grooving construction is optimized, the engineering cost is saved, clay and modified bentonite are effectively and uniformly mixed, the complexity of a traditional wet preparation method is avoided, the filler preparation efficiency is improved, and the overall construction period is short; and a wall body construction mode of layer-by-layer dry material backfilling and layer-by-layer slurry filling formation promotion is adopted, so that the uniformity and effectiveness of the wall body are ensured, the construction speed of the wall body is increased, and the wall forming construction period is shortened.
本发明涉及一种适用于高水位条件的垃圾填埋场柔性阻隔墙施工方法，将柔性阻隔墙的底部嵌入垃圾填埋场底部的不透水层；以干法回填在柔性阻隔墙内设回填填料层。本发明利用丰富的地下水水系，使得回填填料在后期过程中逐步固结，特别是改性膨润土将逐步水化膨胀，进而粘结为稠状胶体、与原料土进一步固结，逐步提升防渗性能、保障墙体的渗透系数；针对建设深度浅、地质条件佳的场地，优化成槽建设，节省工程成本，有效将粘土、改性膨润土混合均匀，避免传统湿法制备方法的繁琐，提升填料制备效率，整体建设周期短；采用逐层干料回填，逐层泥浆填充促型的墙体构筑方式，既保证墙体的均一性及有效性，也提升墙体的构筑速度，缩短成墙建设周期。
Refuse landfill flexible barrier wall construction method suitable for high water level condition
The invention relates to a refuse landfill flexible barrier wall construction method suitable for a high water level condition. The bottom of a flexible barrier wall is embedded into an impervious layer at the bottom of a refuse landfill; and a backfill filler layer is backfilled in the flexible barrier wall by a dry method. Rich underground water systems are utilized, so that the backfill filler is gradually solidified in the later process, and particularly, the modified bentonite is gradually hydrated and expanded to be bonded into a thick colloid to be further solidified with the raw material soil, so that the anti-seepage performance is gradually improved, and the permeability coefficient of the wall body is guaranteed; for a site with shallow construction depth and good geological conditions, grooving construction is optimized, the engineering cost is saved, clay and modified bentonite are effectively and uniformly mixed, the complexity of a traditional wet preparation method is avoided, the filler preparation efficiency is improved, and the overall construction period is short; and a wall body construction mode of layer-by-layer dry material backfilling and layer-by-layer slurry filling formation promotion is adopted, so that the uniformity and effectiveness of the wall body are ensured, the construction speed of the wall body is increased, and the wall forming construction period is shortened.
本发明涉及一种适用于高水位条件的垃圾填埋场柔性阻隔墙施工方法，将柔性阻隔墙的底部嵌入垃圾填埋场底部的不透水层；以干法回填在柔性阻隔墙内设回填填料层。本发明利用丰富的地下水水系，使得回填填料在后期过程中逐步固结，特别是改性膨润土将逐步水化膨胀，进而粘结为稠状胶体、与原料土进一步固结，逐步提升防渗性能、保障墙体的渗透系数；针对建设深度浅、地质条件佳的场地，优化成槽建设，节省工程成本，有效将粘土、改性膨润土混合均匀，避免传统湿法制备方法的繁琐，提升填料制备效率，整体建设周期短；采用逐层干料回填，逐层泥浆填充促型的墙体构筑方式，既保证墙体的均一性及有效性，也提升墙体的构筑速度，缩短成墙建设周期。
Refuse landfill flexible barrier wall construction method suitable for high water level condition
一种适用于高水位条件的垃圾填埋场柔性阻隔墙施工方法
ZHAN SHENG (author) / YUAN MIAOXIN (author) / XU PENGFEI (author) / ZHANG FEI (author) / CHEN HUAN (author)
2022-01-11
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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