Prediction Method of Rock Compressive Strength Based on Analysis of Wave Velocity Characteristics

Authors

  • Dongli Li, Echuan Yan

Abstract

In tunnel construction, the quality of the rock mass in front of the tunnel determines the stability of the surrounding rock of the tunnel. Using reasonable methods to predict the compressive strength of the rock mass can improve the construction efficiency of the tunnel and ensure the safe operation of the tunnel. Relying on field engineering, this paper obtains a large number of cores from field engineering, and focuses on the analysis of rock sample wave velocity test and uniaxial compressive strength test. Through the test of a large number of field cores, based on the existing wave velocity-uniaxial compressive strength relationship model, including the fitting relationship of exponential, power and polynomial, the different fitting parameters are compared, and the better one is selected. Model relationship. Based on the obtained relationship model, the field data was tested to verify the accuracy of the relationship model and provide a basis for the evaluation of the compressive strength of the rock mass in front of the tunnel face.

Published

2020-10-01

Issue

Section

Articles