Study on Goaf Treatment and Settlement Simulation of Existing Overlying Highway Subgrade

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, 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 avoid that mining impacts on the settlement of above highway roadbed, goaf treatment schemes were put forward, such as roof blasting, filling mining and filling mining+roof blasting. According to the rules it is set that the subgrade settlement limit is 0.3 m, and filling rate is 0.85, 0.9 and 0.95. PFC3D explosion model to simulate the blasting was introduced, 7 schemes were put forward for simulating methods of filling body, and the 7 schemes were implemented. The simulation results show that the igneous rock 4 in rock migration process has the function of inhibitting the movement of the overlying strata. The influence of filling mining + roof blasting on the land subsidence is obviously lower than using the filling mining alone. The goaf treatment schemes meeting the requirements to limit the settlement are: Filling mining (filling rate is 0.9 and 0.95), and filling mining + roof blasting (filling rate is 0.85, 0.9 and 0.95).

Recommended Citation

Cui, Tiejun; Ma, Yundong; and Wang, Laigui (2020) "Study on Goaf Treatment and Settlement Simulation of Existing Overlying Highway Subgrade," Journal of System Simulation: Vol. 28: Iss. 11, Article 11.
DOI: 10.16182/j.issn1004731x.joss.201611011
Available at: https://dc-china-simulation.researchcommons.org/journal/vol28/iss11/11

First Page

2723

Revised Date

2015-05-23

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201611011

Last Page

2728

CLC

TD324

Recommended Citation

Cui Tiejun, Ma Yundong, Wang Laigui. Study on Goaf Treatment and Settlement Simulation of Existing Overlying Highway Subgrade[J]. Journal of System Simulation, 2016, 28(11): 2723-2728.

DOI

10.16182/j.issn1004731x.joss.201611011