Simulation and Research on Surface Subsidence Caused by Abandoned Goaf Under Earthquake

Authors

Tiejun Cui, 1. College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China;;2. Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education, Liaoning Technical University, Fuxin 123000, China;;3. Tunnel & Underground Structure Engineering Center of Liaoning, Dalian Jiaotong University, Dalian 116028, China;;
Yundong Ma, 3. Tunnel & Underground Structure Engineering Center of Liaoning, Dalian Jiaotong University, Dalian 116028, China;;
Laigui Wang, 4. School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China;

Abstract

Abstract: To understand the overlying rock strata caused by filling and abandoned goaf under earthquake, ensuring that the upper surface of subgrade is not due to the earthquake generating additional settlement which affects normal use, the goaf and the overlying rock strata were simulated with filling rate(0.85, 0.9, 0.95) and earthquake acceleration(0.2 g, 0.3 g, 0.4 g). Simulation using PFC3D as platform, modeling of complex strata, and the introduction of filling and the simulation method of earthquake, the overlying rock strata migration, stress, and the surface of the subgrade settlement characteristics were obtained. The additional earthquake surface subsidence law was qualitatively obtained, the relationship among the filling rate, earthquake acceleration and additional settlement were analyzed quantitatively, and so were for the reasons. The working parameters of settlements of highway subgrade were confirmed.

Recommended Citation

Cui, Tiejun; Ma, Yundong; and Wang, Laigui (2020) "Simulation and Research on Surface Subsidence Caused by Abandoned Goaf Under Earthquake," Journal of System Simulation: Vol. 28: Iss. 3, Article 17.
Available at: https://dc-china-simulation.researchcommons.org/journal/vol28/iss3/17

First Page

634

Revised Date

2015-01-06

DOI Link

https://doi.org/

Last Page

639

CLC

P62;TD15

Recommended Citation

Cui Tiejun, Ma Yundong, Wang Laigui. Simulation and Research on Surface Subsidence Caused by Abandoned Goaf Under Earthquake[J]. Journal of System Simulation, 2016, 28(3): 634-639.