A FRACTAL MODEL FOR THE MICRO–MACRO INTERACTIONS ON TUNNEL LEAKAGE

Author:

YE DAYU12,LIU GUANNAN234,TIAN YUHE4,SUN ZIZHENG4,YU BOMING5

Affiliation:

1. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, P. R. China

2. Mechanics and Civil Engineering Institute, China University of Mining and Technology, Xuzhou 221116, Jiangsu, P. R. China

3. Key Laboratory of Deep Earth Science and Engineering (Sichuan University), Ministry of Education, Chengdu 610065, Sichuan, P. R. China

4. School of Qilu Transportation Shandong University, Jinan 250000, Shandong, P. R. China

5. School of Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China

Abstract

The complex microstructure of the surrounding porous rock of a tunnel has a significant influence on tunnel leakage. However, traditional tunnel leakage models are rarely able to quantify the interactions between the microstructure and macroscopic parameters of the surrounding porous rock of a tunnel, and the influence of the microstructure evolution on tunnel leakage. In order to quantify the contribution of the surrounding rock microstructure to leakage, a model capable of investigating the interaction between the evolution of microstructure and tunnel leakage behavior under the action of multi-physical fields is established based on fractal theory. The model couples the evolution of microstructure with the stress effect, adsorption–desorption effect, water pressure effect and surrounding rock deformation during tunnel leakage. The accuracy of the model is verified against experimental results, and the contribution of the surrounding porous rock pore size and pore distribution to tunnel water leakage is investigated. This study provides a theoretical basis and technical guidance for a reasonably accurate study of the tunnel leakage mechanism.

Funder

Foundation of Key Laboratory of Deep Earth Science and Engineering

Shandong provincial communication department

National Natural Science Foundation of China

Publisher

World Scientific Pub Co Pte Ltd

Subject

Applied Mathematics,Geometry and Topology,Modeling and Simulation

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