ĐÁNH GIÁ MỘT SỐ GIẢ THIẾT TÍNH ÁP LỰC TÁC DỤNG LÊN THÀNH GIẾNG ĐỨNG VÀ KIẾN NGHỊ TRONG TÍNH TOÁN THIẾT KẾ GIẾNG ĐỨNG TẠI VIỆT NAM

Rock pressure acting on the shaft lining is one of the most critical parameters affecting the design of shaft support systems and the long-term stability of vertical shafts during construction and operation. Numerous methods have been proposed to estimate this pressure; however, each method is developed based on different theoretical assumptions and boundary conditions, resulting in specific ranges of applicability. This paper presents a comprehensive review and comparative evaluation of the existing analytical methods for calculating rock pressure acting on vertical shaft linings. The theoretical basis, underlying assumptions, and applicable conditions of each method are systematically analyzed and discussed. The review indicates that the selection of an appropriate calculation method should be based on the geological and hydrogeological characteristics surrounding the shaft, including rock stratification, layer thickness, bedding inclination, mechanical properties of the rock mass, and groundwater conditions. The findings provide a useful reference for selecting suitable analytical methods, thereby improving the accuracy of rock pressure estimation and supporting the rational design of shaft lining systems to ensure safety, stability, and economic efficiency in vertical shaft construction and operation.