Abstract
The purpose of the research work is to develop a procedure for on-line prediction of the groundwater hydrodynamic mode change caused by the barrage effect of deep foundation structure construction. The main method used is the development of an analytical model as a result of variant solutions of the Laplace equation. The solutions have been elaborated in the course of studies conducted in historical centers of Irkutsk and other cities of Eastern Siberia. As a result, diagrams predicting the formation depth of groundwater level have been created, and the territories have been assessed according to their flooding conditions. An analytical model has been developed for backwater prediction. The model is rather simple, universal and can be applied for predictive calculations on the territories of historical cities located in similar geological and hydrogeological conditions. The available material analyzed, it is concluded that preliminary vertical planning of the territory, correct approach to foundation type selection as well as seasonal rise of underground water play a significant role in the formation of a new headwater elevation.
Highlights
The purpose of the research work is to develop a procedure for on-line prediction of the groundwater hydrodynamic mode change caused by the barrage effect
The main method used is the development of an analytical model as a result
The solutions have been elaborated in the course of studies conducted in historical centers
Summary
Isolines of the groundwater level rise Δh:. 1 – isolines of the groundwater level rise due to backwater, iteration 0.05 m; 2 – underlay with the location diagram of historical and cultural heritage objects; 3 – project structure. Участок No 2 расположен в центральной части г. Здесь проектируется строительство жилого массива с заложением фундамента более 6 м. Проектом предусмотрена вертикальная планировка территории путем грунтовой отсыпки мощностью более 2 м. В совокупности использование свайного фундамента и вертикальной планировки территории позволит избежать массового подтопления территории несмотря на подъем УГВ до 0,3 м В результате при незначительном подъеме уровня ПВ до 0,2 м значительная часть территории окажется в подтопленном состоянии Полученные результаты показали, что наименьшее подтопление соответствует территории, на которой предусматривается предварительная планировка в виде отсыпки техногенным грунтом и использование свайного фундамента
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