地震作用下废弃采空区引起地表沉降模拟与研究

系统仿真学报 ›› 2016, Vol. 28 ›› Issue (3): 634-639.

地震作用下废弃采空区引起地表沉降模拟与研究

崔铁军^1,2,3, 马云东³, 王来贵⁴

1.辽宁工程技术大学安全科学与工程学院,阜新 123000;
2.辽宁工程技术大学矿山热动力灾害与防治教育部重点实验室,阜新 123000;
3.大连交通大学辽宁省隧道与地下结构工程技术研究中心,大连 116028;
4.辽宁工程技术大学力学与工程学院,阜新 123000

收稿日期:2014-10-23 修回日期:2015-01-06 发布日期:2020-07-02
作者简介:崔铁军(1983-),男,沈阳,工程师,博士,讲师,研究方向为地下工程结构安全分析及区域安全分析。
基金资助:
国家自然科学基金(51274110, 50434020, 10972096)

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

Cui Tiejun^1,2,3, Ma Yundong³, Wang Laigui⁴

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;
4. School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China

Received:2014-10-23 Revised:2015-01-06 Published:2020-07-02

摘要/Abstract

摘要： 为了解充填开采并废弃后的采空区遇地震时引起的上覆岩层变化,进而保证上部地表处路基不因地震产生附加沉降而影响正常使用,对充实率为0.85, 0.9,0.95,地震加速度为0.2 g,0.3 g,0.4 g时的采空区及上覆岩层进行模拟。模拟使用PFC3D作为平台,对复杂的岩层进行建模,并引入充填开采和地震的模拟方法,得到了采空区上覆岩层运移、应力,及地表路基沉降特征。研究得到了地震引起地表附加沉降的定性规律,定量地分析了充实率、地震加速度和附加沉降的关系及原因,并确定符合公路路基正常工作的沉降参数。

关键词: 废弃采空区, 地震作用, 地表路基, 附加沉降, 模拟与研究

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.

Key words: abandoned goaf, earthquake, upper surface of subgrade, additional settlement, simulation and research

中图分类号:

P62
TD15

崔铁军, 马云东, 王来贵. 地震作用下废弃采空区引起地表沉降模拟与研究[J]. 系统仿真学报, 2016, 28(3): 634-639.

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.

[1]	崔铁军, 马云东, 王来贵. 基于PFC3D的岩体中不整合面构建方法研究[J]. 系统仿真学报, 2015, 27(11): 2837-2843.
[2]	崔铁军, 李莎莎, 马云东, 王来贵. 岩层错动下复杂构造岩体破坏发展研究及应用[J]. 系统仿真学报, 2018, 30(1): 216-221.