| 广州岩溶塌陷形成条件及主要影响因素 |
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| 引用本文： | 雷金山.广州岩溶塌陷形成条件及主要影响因素[J].地质与勘探,2009,45(4):488-492. |
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| 作者姓名： | 雷金山 |
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| 作者单位： | 1. 中南大学土木建筑学院,长沙,410075
2. 广州市地下铁道设计研究院,广州,510010 |
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| 基金项目： | 湖南省自然科学基金资助项目(07JJ3104);;广州市地下铁道总公司科技计划项目(09A003) |
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| 摘 要： | 广州市岩溶塌陷主要分布在广州西北的广花盆地内,根据大量勘查资料分析,得出岩溶塌陷形成条件及其主要影响因素是复杂和多方面的,如覆盖层岩土性状与厚度、岩溶发育程度、气候条件、地下水与人类工程活动等.覆盖层土体结构越疏松、级配越好、强度越低、厚度越小,岩溶越发育,越容易产生土洞和塌陷;降水季节和持续性的强降雨天气或久旱后的暴雨,板易导致地面塌陷;地下水活动则促使或加速土洞及岩溶塌陷的形成;工程钻探、地下水的抽取、地下采矿及地下工程施工等人类工程活动对岩溶塌陷也有重要影响,常作为诱发动力,通过改变基本条件而加速岩溶塌陷的形成.
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| 关 键 词： | 岩溶塌陷 形成条件 影响因素 广州市 |
| 收稿时间： | 1/2/2009 12:00:00 AM |
| 修稿时间： | 7/6/2009 12:00:00 AM |
Analysis of Forming Conditions and Main Influential Factors of Karst Collapse in Guanzhou |
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| LEI Jin-shan.Analysis of Forming Conditions and Main Influential Factors of Karst Collapse in Guanzhou[J].Geology and Prospecting,2009,45(4):488-492. |
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| Authors: | LEI Jin-shan |
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| Affiliation: | 1.Civil Engineering College;Central-south University;Changsha 410075;China;2.Guangzhou Metro Design Academe;Guangzhou 510010;China |
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| Abstract: | Karst Collapse in Guanzhou mainly occur in the northwest called Guanghua Basin.Based on plenty of prospecting data,It is indicated that the conditions of formation and main influential factors of karst collapse are complicated and various,including the characteristics and thickness of overburden layer,development degree of karst,climate and precipitation,activities of groundwater and mankind engineering activities and so on.The more loose the structure of overburden layer,the better soil gradation,the lower... |
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| Keywords: | karst collapse forming condition influential factor Guanzhou |
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