贵州省赤水丹霞地貌岩层边坡处治技术研究
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摘要
丹霞地貌发育的物质基础是红层。红层岩体具有强度低、易风化崩解、遇水易软化等特点,是一种具有特殊工程特性的岩体。红层地区开挖边坡浅层稳定性较差,若未及时采取防护,极易造成边坡水土流失及风化剥落、崩塌、浅层滑坡等灾害。本文通过现场调查、理论分析等多种方法,对赤水丹霞地貌区红层岩体基本性质、风化特性、边坡变形破坏方式及防护技术进行了分析和研究,提出了红层边坡的防护设计思路,介绍了不同形式的防护及加固技术。
The material foundation of Danxia landform development is the red layer. The red layer rock mass is a special kind of rock body with characteristics of low strength,easy to be weathered,disintegrated and softened after absorbing water. The stability of excavating slope at shallow layer of red bed area is poor,and if the slope protection is not taken in time,it is prone to cause soil erosion and geological hazards,such as weathering spalling,collapse and shallow landslide.In this paper,by means of field investigation,theoretical analysis and other methods,the basic properties and weathering characteristics of the red layer rock mass,the slope deformation failure mode and its protection technology are analyzed and studied. Furthermore,the design ideas for protecting the red bed slope is presented,and different forms of protection and reinforcement techniques are introduced.
The material foundation of Danxia landform development is the red layer. The red layer rock mass is a special kind of rock body with characteristics of low strength,easy to be weathered,disintegrated and softened after absorbing water. The stability of excavating slope at shallow layer of red bed area is poor,and if the slope protection is not taken in time,it is prone to cause soil erosion and geological hazards,such as weathering spalling,collapse and shallow landslide.In this paper,by means of field investigation,theoretical analysis and other methods,the basic properties and weathering characteristics of the red layer rock mass,the slope deformation failure mode and its protection technology are analyzed and studied. Furthermore,the design ideas for protecting the red bed slope is presented,and different forms of protection and reinforcement techniques are introduced.
引文
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[12]霍涛.喷射混凝土用速凝剂概述及其促凝机理[J].铁道建筑技术,2016(11):120-122.
[2]Hofmann-A,Tourani-A,Gaupp-Reinhard.Cyclostratigraphic evolution of Triassic to Lower Jurassic continental red beds in a rift-basin setting(Argana Valley,western Morocco).Hallesches Juhrbuch fuer Geowissenschaften.Reihe B:Geologie,Palaeontologie,Mineralogie.Beiheft,1998(5):74-75.
[3]陈军,王自高,曾宪强,等.云南红层工程地质特性研究[J].水力发电,2006(11):31-34.
[4]郭永春,谢强,文江泉.我国红层分布特征及主要工程地质问题[J].水文地质工程地质,2007(6):67-71.
[5]成昆铁路技术总结委员会.成昆铁路第二册(路线、工程地质及路基)[M].北京:人民铁道出版社,1980:99-115.
[6]堵海燕,史静,安丽芝.冯景兰与丹霞地貌[C]∥中国地质学会地质学史专业委员会第24届学术年会论文汇编.北京:中国地质学会,2012-10-28.
[7]翁玲,陈宇.赤水丹霞气候分析[J].农业与技术,2012(3):94-95.
[8]胡厚田,赵晓彦.中国红层边坡岩体结构类型的研究[J].岩土工程学报,2006(6):689-694.
[9]谭少华,汪益敏.高速公路边坡生态防护技术研究进展与思考[J].水土保持研究,2004(3):81-84.
[10]薛东峰.秦岭山区公路高边坡综合排水研究[D].西安:长安大学,2007.
[11]杨宗佶,乔建平,陈晓林,等.三峡库区万州侏罗系红层滑坡成因机制研究[J].世界科技研究与发展,2008(2):174-176.
[12]霍涛.喷射混凝土用速凝剂概述及其促凝机理[J].铁道建筑技术,2016(11):120-122.