通过圆穿透测试对城市固体废物的地质技术表征 - - 印度德里垃圾填埋场的案例研究
B J Ramaiah1, G V Ramana2, Manoj Datta2
1Civil and Environmental Engineering Department, Indian Institute of Technology Tirupati, Tirupati, India.
Waste management (New York, N.Y.)
|March 25, 2025
概括
孔隙压力测量 (CPTu) 的圆穿透试验提供了一种安全有效的方法来评估填埋场的稳定性. 这种现场技术可靠地估计城市固体废物 (MSW) 的水力机械性能和孔隙压力条件.
科学领域:
- 地质技术工程 地质技术工程
- 环境工程 环境工程
- 地质工程是地质工程.
背景情况:
- 城市固体废物 (MSW) 的水力机械性能对于垃圾填埋场的设计和整个生命周期的安全性至关重要.
- 传统的MSW物理测试是危险和不切实际的;现场技术对于可靠的评估至关重要.
- 了解现场MSW行为,包括孔隙压力和剪切强度,对于斜坡稳定性评估至关重要.
研究的目的:
- 在垃圾填埋工程中证明用孔隙压力测量 (CPTu) 进行圆穿透试验的实用性.
- 使用CPTu评估MSW的水力机械性能和现场行为.
- 评估CPTu的安全性和可靠性,用于垃圾填埋场稳定性分析.
主要方法:
- 在印度德里两个MSW垃圾填埋场进行了一系列CPTu测试.
- 在收集的MSW样本上进行了全面的实验室测试.
- 分析了CPTu数据,包括圆尖的阻力,袖子摩擦,摩擦比率和孔隙压力 (u2),并与实验室结果和国际数据进行比较.
主要成果:
- CPTu有效地确定了液深度和孔隙压力条件 (水静电与高压).
- 根据CPTu的指示,在现场MSW的行为与沙砂和沙砂相似,与粒度分布保持一致.
- 从CPTu (34°-38°) 估计的摩擦角度与实验室衍生值非常相匹配,尖端阻力<4 MPa和袖子摩擦<100 kPa.
结论:
- CPTu是垃圾填埋工程的宝贵工具,提供快速,安全和保守的剪切强度和孔隙压力的估计.
- 该研究证实了CPTu在MSW垃圾填埋场的可靠斜坡稳定性分析方面的潜力.
- 来自这项研究和全球垃圾填埋场的CPTu数据支持其在评估MSW水力机械性能方面的广泛适用性.
相关概念视频
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