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抽水和建筑荷载双重作用下的地面沉降模型 预览 被引量:7

Land Subsidence Model under Dual Effects of Groundwater Pumping and Construction Loading
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摘要 依据含水层质量守恒原理,推导了非固结地层在建筑荷载作用下的地面沉降机理模型,并将其与Jacob假定下抽水引起的地面沉降弹性模型相比较,结果发现两种模型的机理表达式完全一致,仅区别于水动力原因或实质的不同。在同一坐标系中,根据线性叠加原理,抽水沉降漏斗和荷载沉降漏斗可能都落在地下水位降落漏斗内。假定两者为相互独立事件,给出了抽水和建筑荷载双重作用下的地面沉降模型,表明其如果以水位降深为制约因子,则可以对水动力实质完全不同的两种沉降过程进行线性叠加计算。 Based on conservation of mass, this paper deduced a theoretical model for land subsidence caused by construction loading on unconsolidated strata, and compared it with the elastic model for subsidence controlled by groundwater pumping. The results show that the mechanism expressions of two models are accordant, but their hydrodynamic essences are different, that is, the former is caused by dissipation of pore water pressure, and the later is for the sake of drawdown. Calculation model for subsidence under the dual effects of pumping and loading is given according to superposition principle. Taking drawdown as main factor, two subsidence processes with different hydrodynamic essences can be overlaid effectively.
作者 赵慧 钱会 李渊 彭建兵 ZHAO Hui , QIAN Hui , LI Yuan , PENG Jian-binga (1. School of Environmental Sciences and Engineering, Chang'an University , Xi'an 710054, Shaanxi, China; 2. Board of Management, Xi'an Yanliang National Aviation Hi-Tech Industrial Base, Xi'an 710089, Shaanxi, China;3. School of Geological Engineering and Surveying, Chang'an University, Xi'an 710054, Shaanxi, China)
出处 《地球科学与环境学报》 CAS 2008年第1期 57-59,68,共4页 Journal of Earth Sciences and Environment
基金 中国地质调查局项目(200411300025) 国家自然科学基金项目(40534021)
关键词 质量守恒原理 建筑荷载 抽水 双重作用 叠加原理 沉降模型 conservation of mass construction loading groundwater pumping dual effects superposition principle model for subsidence
作者简介 赵慧(1976-),女,陕西扶风人,博士研究生,从事环境水文地质研究。E-mail:zhaohuixa@163.com
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