RETRACTED ARTICLE: Research and application of automatic monitoring system for tunnel-surrounding rock measurement based on GIS

Abstract

This paper establishes a geological three-dimensional coordinate model and uses GIS to obtain the thickness of the overburden. The tunnel displacement monitoring points mainly include: vault settlement measurement points, foot settlement measurement points, and gap convergence measurement points. This paper constructs a GIS-based section tunnel entrance safety evaluation system, which provides a reference for the safety evaluation of the section tunnel entrance. The determination of the construction parameters and support parameters of the tunnel engineering is deeply affected by the stress conditions of the tunnel engineering. Under the conditions of limited economy and time, before tunnel construction, the mechanical parameters of the tunnel-surrounding rock are determined mainly through limited drilling. Although it is somewhat difficult, the construction parameters of tunnel engineering are also determined accordingly. The calculation results may cause the actual deformation of the surrounding rock to be quite different from the predicted deformation, and accidents may be caused according to the original construction plan. Therefore, the supervision and measurement of tunnel engineering is particularly important. At the same time, a risk evaluation system is established to achieve the control of risk evaluation indicators, which can intuitively express the size of the tunnel entrance affected by the evaluation factors, calculate the mechanical parameters of the surrounding rock of the tunnel, determine the construction parameters and support parameters of the tunnel project, and analyze the measured displacement changes to ensure long-term stable construction and support. Through the actual application of the project, it can be seen that the risk assessment system can also conveniently and quickly query and analyze the monitoring data of the tunnel, and it can realize online operation and analyze the stability of the same surrounding rock. This proves the rationality of the planning and framework of the detection system, and it has high application value.