Research on the construction of rectangular structure vertical shaft in urban underground water conservancy engineering: Taking the Longkou Area of Dongshen Water Supply Branch Line as an example

Abstract

In urban underground water conservancy projects, the construction process of a rectangular shaft is a complex and crucial engineering task. This task plays an extremely important role in ensuring the stable supply of urban water resources, effectively preventing floods and draining water, as well as protecting and maintaining the groundwater environment. During the construction of the shaft, determining the layout and shape, as well as the dimensions of the shaft's cross-section, is a step that requires careful consideration. The decision on these factors is not only influenced by the functional use and construction conditions but must also take into account various aspects such as geological conditions, water inflow, the performance of hoisting equipment, production efficiency, and the setting of safety exits. Among these considerations, geological conditions are particularly critical as they directly relate to the form of the cross-section layout and the design of the support structure. Currently, in many water conservancy projects, commonly used cross-section shapes include circular, square, and rectangular. Among them, the circular cross-section is the most common due to its convenience in construction and maintenance and its high cross-section utilization rate. However, in certain specific geological conditions or urban spatial constraints, a square or rectangular cross-section may be more appropriate.

Keywords

underground hydraulic engineering / urban / rectangular / karst