苏州七子山填埋场竖向扩建飞灰填埋库区实践
Practice of Horizontal Expansion of Qizishan Landfill in Suzhou for Fly Ash Disposal
殷煜星 1刘晨旭 2叶剑 2钱剑文 2仇庆春 1兰吉武3
作者信息
- 1. 苏州市环境卫生管理处,江苏 苏州 215000
- 2. 浙江大学建筑设计研究院有限公司,浙江 杭州 311121
- 3. 浙江大学 岩土工程研究所,浙江 杭州 310058;浙江大学 软弱土与环境土工教育部重点实验室,浙江 杭州 310058
- 折叠
摘要
苏州七子山填埋场是我国最早在生活垃圾堆体之上竖向扩建飞灰填埋库区的填埋场之一,其飞灰填埋库区采用了双层人工合成材料防渗衬层,至今已运行 10 余年,累计填埋飞灰 4.996×105 t.对该填埋场库底土压力和沉降持续跟踪监测.结果表明:飞灰填埋厚度约 8.0 m时,库底测得土压力为 81.44 kPa;库区基层产生了显著的沉降和不均匀沉降,最大沉降量为 1.79 m,最大不均匀沉降量为 2.26 m.竖向扩建飞灰填埋库区建设完成后,垃圾堆体稳定安全系数为 1.814,目前为 1.472,均满足规范要求.竖向扩建飞灰填埋库区的基层沉降问题需要在设计和运行阶段充分考虑和应对.
Abstract
Suzhou Qizishan landfill is one of the earliest landfills in China to vertically expand the fly ash landfill area above the domestic waste pile.The fly ash reservoir area adopted a double-layer artificial synthetic material anti-seepage lining layer.It has been running for more than 10 years,with a total of 499 600 tons of landfill fly ash.The subsoil pressure and settlement of the landfill reservoir were tracked and monitored.The results showed that when the thickness of fly ash landfill was about 8.0 m,the soil pressure at the bottom of the reservoir was 81.44 kPa.The base of the reservoir area had produced significant settlement and uneven settlement.The maximum settlement is 1.79 m,and the maximum uneven settlement was 2.26 m.After the completion of the construction of the vertical expansion fly ash landfill reservoir area,the stability safety factor of the garbage pile was 1.814,which is currently 1.472,which meets the requirements of the specification.The settlement of the base layer in the vertical expansion of the fly ash landfill reservoir area needs to be fully considered and dealt with in the design and operation stages.
关键词
竖向扩建/飞灰填埋库区/不均匀沉降/稳定Key words
vertical expansion/fly ash landfill area/uneven settlement/stability引用本文复制引用
出版年
2024
NETL
NSTL
万方数据