COMPUTER-FINITE ELEMENT MODEL FOR CALCULATION OF STABILITY OF ENGINEERING STRUCTURES

Abstract

This article explores the development of a computer model based on the finite element method (FEM) for assessing the stability of underground engineering structures constructed in complex geological conditions. Using the Almaty metro construction as an example, the authors analyze the behavior of unstable soils (pebble, boulder-pebble, and water-saturated environments). A technology for artificially strengthening the rock mass by chemically reinforcing the roof and injecting grout is considered. Particular attention is paid to calculating the stress-strain state (SSS) of the system at three stages: opening the workings, drilling and grout injection, and the final integration of the reinforced zone with the rock mass. The paper substantiates the use of finite element analysis to optimize strengthening parameters (injection pressure, borehole spacing) and ensure seismic resistance of the structures.