构造应力型开采地表沉陷规律及其工程处理方法  

The law of tectonic stress mining ground surface subsidence and its engineering treatment method

作　　者：方建勤[1] 彭振斌[1] 颜荣贵[2] 

机构地区：[1]中南大学地学与环境工程学院,湖南长沙410083 [2]中南大学湖南金地钻凿工程技术公司,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2004年第3期506-510,共5页Journal of Central South University:Science and Technology

基　　金：西部开发科技行动计划项目(2001BA901A09)

摘　　要：分析了构造应力型开采地表沉陷宏观破坏特征,揭示了构造应力型开采卸载地表沉陷的力学本质,建立了构造应力型开挖地表沉陷的力学模型,指出现有的自重应力型地表沉陷规律的理论方法不适用于构造应力型地表沉陷规律的研究;引入概化地应力概念,导出了构造应力作用下地表变形的预计公式体系。从工程应用出发,提出了综合考虑自重应力与概化地应力2种效果迭加来研究构造应力型地表沉陷规律的方法,并建立了相应的研究步骤与程式。The ground surface subsidence caused by underground excavation in which has obvious tectonic stress effect is the coupling effective results of tectonic stress and self-weight stress. (Because) it has different mechanical mechanism, this subsidence expresses special macroscopic destruction characteristics. From the observation and analysis of macroscopic destruction characteristics, the mechanical essence of tectonic stress ground surface subsidence caused by underground excavation and established it′s mechanical model was revealed, it is shown that the law of self-weight stress ground surface subsidence caused by underground excavation be not suitable for the study of tectonic stress ground surface subsidence caused by underground excavation. Thus the concept of tectonic stress general changed stress must be introduced into the anticipate formula system of tectonic stress ground surface subsidence caused by underground excavation. From the viewpoint of engineering application, the synthetical effect of self-weight stress and general changed stress should be considered to investigate the ground surface subsidence caused by underground excavation. The developing direction of theoretical research on tectonic stress ground surface subsidence caused by underground excavation is also pointed out in this paper.

关 键 词：自重应力 构造应力 随机介质理论 概化地应力 沉陷 

分 类 号：TD325.2[矿业工程—矿井建设]