论文部分内容阅读
地下水开采造成区域性地面沉降及其带来的危害已成为全球性的地质灾害之一。对沉降区域内控制点的监测和预测是沉降研究的主要内容。基于弹性力学、有效应力原理和土体线弹性本构关系,在单井抽水造成地面沉降规律性研究的基础上,应用线性微分方程叠加原理论证了多井抽水时沉降–距离仍遵循s–lnr线性关系。通过国内外若干抽水导致的区域性地面沉降实例验证,虽然由于地层不均匀性和地质构造如断裂等影响,各地沉降漏斗并不规则,但都存在以上s–lnr的线性关系。文中揭示的区域性地面沉降中的s–lnr线性关系规律,可用于地面沉降研究中非监测点的沉降值推测和沉降趋势预测,具有重要应用价值。
Regional ground subsidence caused by exploitation of groundwater and its harm has become one of the global geological disasters. The monitoring and prediction of the control points in the subsidence area are the main contents of the settlement research. Based on the elastic mechanics, the principle of effective stress and the linear elastic constitutive relationship of soil, based on the study of regularity of land subsidence induced by single well pumping, the principle of superposition of linear differential equations is used to demonstrate that the settlement-distance still follows s-lnr Linear relationship. Some examples of regional land subsidence caused by some pumping at home and abroad are validated. Although the settlement funnels are irregular due to strata heterogeneity and geological structure such as fracture, there is a linear relationship of above s-lnr. The linear relationship law of s-lnr in the regional land subsidence disclosed in this paper can be used to predict the subsidence and non-subsidence tendency of non-monitoring points in land subsidence research, which is of great value.