建筑垃圾填埋场稳定性及生态修复研究

杨永辉; 刘庆娟; 高德彬

doi:10.20265/j.cnki.issn.1007-2993.2024-0203

建筑垃圾填埋场稳定性及生态修复研究

doi: 10.20265/j.cnki.issn.1007-2993.2024-0203

1.
信电综合勘察设计研究院有限公司，陕西西安　710054
2.
长安大学地质工程与测绘学院，陕西西安　710054

基金项目: 国家自然科学基金（41372329）；中国铁路总公司科技研发项目“建筑垃圾填料分类及填筑技术研究”（J14-09B）

详细信息

作者简介:
杨永辉，男，1980年生，硕士，高级工程师，主要从事地质工程方面的研究工作。E-mail：yyhui123@163.com

中图分类号: X45
计量
- 文章访问数: 25
- HTML全文浏览量: 2
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2024-05-10
- 修回日期: 2024-08-20
- 录用日期: 2024-10-29
- 刊出日期: 2025-08-08

Stability and environmental restoration of informal construction landfills

1.
China DK Comprehensive Investigate and Design Research Institute Co., Ltd., Xi’an 710054, Shaanxi, China
2.
School of Geological Engineering and Surveying, Chang’an University, Xi’an 710054, Shaanxi, China

摘要

摘要: 非正规建筑垃圾填埋场的整治是目前区域环境修复治理的热点问题。以西安市青菜沟建筑垃圾非正规填埋场为研究对象，通过现场调绘、勘探、室内试验等，分析了填埋场的地质环境及堆体形态与变形破坏特征。选用FLAC 3D分析了填埋场堆体边坡的稳定性，并对建筑垃圾的环境风险性进行试验研究。在此基础上，提出了利用建筑垃圾再生集料及渣土构建填埋场的毛细屏障层方案，为非正规建筑垃圾填埋场的环境恢复治理提供科学依据。
- 建筑垃圾 /
- 堆体边坡 /
- 环境风险 /
- 毛细屏障层 /
- 环境治理
Abstract: The remediation of informal construction-waste landfills is currently one of the important research topics for environmental restoration. Field investigations, surveying, drilling, and laboratory experiments were conducted in Xi’an Qingcaigou construction landfills, and the geological environment along with the morphology and deformation characteristics of the landfills were analyzed. FLAC 3D was used to analyze the stability of the slope under different conditions. The environmental risk of construction waste was also studied. A capillary barrier layer scheme for constructing landfills using recycled aggregates and waste soil from construction waste has been proposed, providing a scientific basis for environmental restoration and management of informal construction waste landfills.
- construction waste /
- debris slope /
- environmental risk /
- capillary barrier /
- environmental management

HTML全文

图 1 建筑垃圾填埋场DEM模型

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图 2 建筑垃圾填埋场前缘堆体边坡

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图 3 边坡坡顶平台拉张裂缝

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图 4 单级坡顶平台冲蚀沟及塌陷坑

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图 5 1-1′剖面示意图

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图 6 填埋场三维数值模型

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图 7 天然工况下堆体边坡剪应力云图

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图 8 降雨工况下堆体边坡剪应力云图

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图 9 不同取样点浸提试验结果

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图 10 双层毛细屏障层结构示意图（单位：cm）

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图 11 三层毛细屏障层结构示意图（单位：cm）

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图 12 砂土层级配

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表 1 填埋场建筑垃圾与黄土计算参数选取

岩土类型	天然工况			降雨工况			泊松比	弹性模量 E/MPa
岩土类型	γ /（kN·m^–3）	c /kPa	φ /（°）	γ /（kN·m^–3）	c /kPa	φ /（°）	泊松比	弹性模量 E/MPa
建筑垃圾	18.3	13	15	19.4	11	14	0.35	20
Q₃黄土	15.3	34.3	26	16.5	31.2	24	0.3	35
Q₂黄土	16.4	36.8	32	17.7	34.2	30	0.3	40

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表 2 水污染物排放浓度

序号	控制污染物	排放浓度限值	实际排放浓度
1	色度	30	10
2	COD_cr/（mg·L⁻¹）	60	30
3	COD₅/（mg·L⁻¹）	20	12
4	悬浮物/（mg·L⁻¹）	30	15
5	总氮/（mg·L⁻¹）	20	8.5
6	氨氮/（mg·L⁻¹）	8	6.51
7	总磷/（mg·L⁻¹）	1.5	0
8	粪大肠杆菌/（pcs·L⁻¹）	10000	1200
9	总汞/（mg·L⁻¹）	0.001	0
10	总镉/（mg·L⁻¹）	0.01	0
11	总铬/（mg·L⁻¹）	0.1	0
12	六价铬/（mg·L⁻¹）	0.05	0
13	总砷/（mg·L⁻¹）	0.1	0.002
14	总铅/（mg·L⁻¹）	0.1	0

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