Horizontal Whirling Jet Grouting Principles & Impact Research

With the development of traffic engineering, more and more high-way and railway tunnels, especially, urban underground engineering, are built. Commonly urban under ground projects are of shallow depth and the stratum condition located is very bad. The application of tunneling method will have a great influence on the stratum, which would result in great ground subsidence. For tunnels being close to or intersecting with important ground structures, underground objects or underground pipes, the allowed ground subsidence during construction is very limited. This contradiction poses a difficult subject to the field of the underground engineering at all times.Based on the predecessors'results of barrel vault mechanism, this paper starts with the mechanism and the mechanics property of the concretion body ,and does some research on the impact and principles of the Horizontal Whirling Jet Grouting .Contents of this paper are as follows:1,Soil,shoring of the tunnel and the concretion body of the Horizontal Whirling Jet Grouting have different stress impress path。The theoretical conclusion has been obtained.2,Based on the mechanics property of the concretion body obtained from the room and theater examinations, the calculate model has been predigested and the 3D FEM has been used to simulate the distortion.3,The fruit came from the room and theater examinations,3D FEM simulation and theoretical research should be applied into practical engineering and get the design method of the Horizontal Whirling Jet Grouting.Above all, this research has reference value to the Horizontal Whirling Jet Grouting's further applications.