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地球科学进展  2010, Vol. 25 Issue (5): 484-491    DOI: 10.11867/j.issn.1001-8166.2010.05.0484
综述与评述     
滑带土的研究进展
李晓1,梁收运1,2*,郑国东2
1. 西部灾害与环境力学教育部重点实验室,兰州大学,甘肃  兰州  730000;
2.中国科学院地质与地球物理研究所油气资源研究重点实验室,甘肃  兰州  730000
Progresses in Sliding Zone Soil of Landslides
Li Xiao1,Liang Shouyun1,2,Zheng Guodong2
1.Key Laboratory of Mechanics on Western Disaster and Environment, Lanzhou University,Lanzhou  730000,China;   2. Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, CAS, Lanzhou  730000, China
 全文: PDF(1061 KB)  
摘要:

  滑带土是滑坡的重要组成部分,与滑坡的发展演化和稳定性密切相关。开展滑带土的研究是滑坡工程地质研究的基础内容,并已逐渐成为该领域的研究热点。目前有关滑带土的研究成果主要集中在滑带土物理力学性质方面,而针对滑带土强度的控制因素和机理研究还比较欠缺。在简要总结了滑带的识别、滑带土分类和强度特性等研究现状的基础上,着重从滑带土微观结构、矿物成分、地球化学特征和形成机理等,及其对滑带土强度特性的影响进行了综述与分析。研究结果认为:除了滑带的识别、滑带土的分类及其强度特征的研究需要进一步加强外,应不断拓宽滑带土的研究领域,深化对滑带土强度本质因素认识;应重视滑带土微观结构在不同条件下的变化规律、粘土矿物成分、元素地球化学特征、微生物、水—岩(土)相互作用、渗透性以及水化学等综合作用对滑带土强度影响的研究;从发展演化的活动论观点系统研究滑带土的形成过程,探索滑带土中所蕴含的滑坡发展演化与环境变化的信息。

关键词: 滑带土微观结构矿物成分地球化学形成机理    
Abstract:

 The soil in sliding zone is an essential part of landslides, and closely related to the evolutionary development and landslide stability evaluation. The study of sliding zone soil has been concerned recently and gradually turned to a hotspot because the study is the fundamental content of landslide in engineering geology. However, most of the study of sliding zone soil, at present, mainly has concentrated on physical and mechanical property, lacked of discussing the essential factors which affect the strength of sliding zone soil. Based on the work that have been done, in this paper, we briefly summarize the recognition and the classification of sliding zone, and the current study situation of the strength characteristics of sliding zone soil, and then emphatically give a summary and analysis according to the microstructure, mineral composition, geochemical characteristics and formation mechanism of sliding zone soil, especially the discussion of the effect of these characteristics on the strength of sliding zone soil. The study results suggest that: ①the recognition of sliding zone, the classification of sliding zone soil and the analysis of the strength of sliding zone soil need to be further studied, and we ought to do some work to broaden steadily research scopes of sliding zone soil and improve the understanding of the essential factors of affecting its strength; ②the research of sliding zone soil should be emphasized on the change of strength with its mineral composition, water, density, grain-size, geochemical characteristics, microorganisms, and the variation laws of microstructure under different conditions, and the effect of water-rock(soil) interaction, permeability and water chemical action on sliding zone soil; ③the systematical research of sliding zone soil formation process should be based on the evolutionary viewpoint. More information  about sliding zone soil  landslide evolutionary progress and environment change should be sought in future.

Key words: Sliding zone soil    Microstructure    Mineral composition    geochemical characteristics    Formation mechanism.
收稿日期: 2009-10-26 出版日期: 2010-05-10
:  P694  
基金资助:

兰州大学灾后重建应急专项“板块俯冲地震诱发次生地质灾害及重建对策研究”(编号:LZUZJ003);  甘肃省科技支撑计划—社会发展计划项目“甘肃省突发性地质灾害特征及防灾救灾技术研究”(编号:0804NKCA084)资助.

通讯作者: 梁收运(1965-),男,陕西蒲城人,副教授,主要从事工程地质和环境地质方面的教学与研究.     E-mail: liangsy@lzu.edu.cn
作者简介: 李晓(1983-),男,河南正阳人,硕士研究生,主要从事灾害地质学方面研究. E-mail:lixiao@126.com
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引用本文:

李晓,梁收运,郑国东. 滑带土的研究进展[J]. 地球科学进展, 2010, 25(5): 484-491.

Li Xiao,Liang Shouyun,Zheng Guodong. Progresses in Sliding Zone Soil of Landslides. Advances in Earth Science, 2010, 25(5): 484-491.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2010.05.0484        http://www.adearth.ac.cn/CN/Y2010/V25/I5/484

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