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| 采空区地表沉降影响因素研究 | |
| 引用本文： | 孙超,薄景山,刘红帅,齐文浩.采空区地表沉降影响因素研究[J].吉林大学学报(地球科学版),2009,39(3). |
| 作者姓名： | 孙超 薄景山 刘红帅 齐文浩 |
| 作者单位： | 1. 中国地震局,工程力学研究所,哈尔滨,150080;吉林建筑工程学院,勘查工程系,长春,130021 2. 中国地震局,工程力学研究所,哈尔滨,150080;防灾科技学院,地震工程系,河北,三河,065201 3. 中国地震局,工程力学研究所,哈尔滨,150080 |
| 摘 要： | 采空区地表沉降影响因素众多,以有限元软件ANSYS为基础,利用数值模拟方法的灵活性,分别对各主要影响因素进行分析.选用适合于岩土类材料的德鲁克-普拉格本构模型,利用ANSYS特有的"杀死单元"命令模拟矿体被采出,再通过"激活单元"命令模拟采空区被填充.分别研究了开采深度、开采厚度、地形条件、采空区填充等因素对地表沉降的影响.结果表明:随开采深度的增加,地表变形随之降低;随开采厚度的增加,地表变形增长较快;随着地形坡度的变化,采空区地表移动盆地逐渐向地势较低方向移动;矿体开采后及时充填,对控制地表变形效果显著. |
| 关 键 词： | 采空区 地表沉降 德鲁克-普拉格模型 |
Study on Influencing Factors of Ground Settlement over Mined-Out Area |
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| SUN Chao,BO Jing-shan,LIU Hong-shuai,QI Wen-hao.Study on Influencing Factors of Ground Settlement over Mined-Out Area[J].Journal of Jilin Unviersity:Earth Science Edition,2009,39(3). | |
| Authors: | SUN Chao BO Jing-shan LIU Hong-shuai QI Wen-hao |
| Institution: | SUN Chao1,2,BO Jing-shan1,3,LIU Hong-shuai1,QI Wen-hao11.Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China2.Investigation Engineering Department,Jilin Institute of Architecture , Civil Engineering,Changchun 130021,China3.Earthquake Engineering Department,Institute of Disater Prevention Science , Technology,Sanhe,Hebei 065201,China |
| Abstract: | There are many factors to influence on the ground settlement in mined-out area.Based on the finite element software ANSYS,making use of the flexibility of numerical simulation method,the main factors are analyzed respectively.The Druker-Prager model is chosen,which is suitable to simulate the materials of rock and soil.'Kill Element' command is used to simulate the situation of exploiting,and then the command of 'Activate Element' in ANSYS is used to simulate that the mined-out area is filled.The influence ... |
| Keywords: | ANSYS |
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