岩土工程学报2026，Vol.48Issue(1)：24-32,9.DOI:10.11779/CJGE20240905
适用于存量垃圾开采再利用工程的大直径旋挖取样和筛分试验方法
Large-diameter rotary drilling sampling and screening test methods for municipal solid waste mining and reutilization
摘要
Abstract
In recent years,many MSW landfills in China have adopted mining and screening for land reuse,pollution elimination,and incineration capacity optimization.Key parameters include the waste stock and the mass proportion of materials.This paper presents a method including small borehole exploration for waste distribution mapping,rotary drilling for in-situ density testing and sampling,and sieve analysis to quantify screened materials.Applied to a Shenzhen landfill,the method includes comparative analyses of appearance,physical composition,moisture content,particle size distribution,and density between samples from rotary drilling and small boreholes.Results demonstrate the superior representativeness of rotary drilling samples.Compared to rotary drilling,small borehole samples have 15%fewer coarse particles but 2.6%～13.7%more fine particles and 3.2%～21.9%more light materials.Depth analysis reveals decreasing characteristic particle sizes in rotary-drilled samples,and degraded particles mainly concentrate in 0.075～2 mm range,exhibiting a 7.6%increase in mass proportion.In-situ density of from rotary drilling increases from 6.09 to 12.53 kN/m³ with depth,while small borehole results are 10.7%～37.6%higher.The difference between the two methods decreases with depth.Based on the experimental results,the waste stock and quantities of screened materials are calculated.Compared to rotary drilling,the calculation error for small borehole samples ranges from 40.5%to 128.6%.关键词
填埋场/开采/筛分再利用治理/旋挖钻/筛分Key words
landfill/mining/screening and reutilization management/rotary drilling/screening分类
建筑与水利引用本文复制引用
ZHAN Liangtong,ZHANG Ziting,LI He,LAN Jiwu,CHEN Yunmin..适用于存量垃圾开采再利用工程的大直径旋挖取样和筛分试验方法[J].岩土工程学报,2026,48(1):24-32,9.基金项目
浙江省科技计划项目(2022C03095) （2022C03095）
湖南省自然科学基金项目(2023JJ70027)This work was supported by The Key Research and Development Program of Zhejiang(Grant No.2022C03095),Natural Science Foundation of Hunan Province(Grant No.2023JJ70027). （2023JJ70027）
