基于GIS的岩质顺层边坡坡体组合类型空间分布
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摘要
GIS技术在地质灾害领域得到了越来越广泛的应用。采用节理玫瑰花图和赤平投影法,通过对三峡库区某区域岩质顺层边坡的大量节理裂隙的统计和主要结构面组合切割关系的分析,选取12个坡体组合计算点及其坡体组合类型,并利用ArcGIS软件依据岩层倾向一致性原则进行识别与处理,从而确定了每个坡体组合计算点所能影响的区域范围,最终得到研究区域范围内岩质顺层边坡坡体组合类型的空间分布,可为岩质边坡稳定性评价提供依据。
GIS technology has been applied more and more to the field of geological hazards.This paper makes statistical analysis of a large number of joints and fractures of bedding rock slope and analyzes the integrated relationship of the major structural planes by using the method of joint rose diagram and stereographic projection.Based on this,the paper determines 12 calculation points of the slope combination and their combinated types.Then the paper uses ArcGIS to search the influence scope of the calculation points with the principle of consistency of the slope and rock stratum inclination directions.Finally,the paper obtains the spatial distribution of the combination types of the bedding rock slope in the study area.The paper can provides important reference for the analysis of rock slope stability.
GIS technology has been applied more and more to the field of geological hazards.This paper makes statistical analysis of a large number of joints and fractures of bedding rock slope and analyzes the integrated relationship of the major structural planes by using the method of joint rose diagram and stereographic projection.Based on this,the paper determines 12 calculation points of the slope combination and their combinated types.Then the paper uses ArcGIS to search the influence scope of the calculation points with the principle of consistency of the slope and rock stratum inclination directions.Finally,the paper obtains the spatial distribution of the combination types of the bedding rock slope in the study area.The paper can provides important reference for the analysis of rock slope stability.
引文
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[10]戴福初,陈守义,李焯芬.从土的应力应变特性探讨滑坡发生机理[J].岩土工程学报,2000,22(1):127-130.
[11]谭万鹏,郑颖人,王凯.考虑蠕变特性的滑坡稳定状态分析研究[J].岩土工程学报,2010,32(S2):5-8.
[12]侯威,张茜,楼蓉蓉,等.基于变维分形理论的滑坡空间分布特征研究[J].安全与环境工程,2012,19(4):17-21.
[2]易武,孟召平,易庆林.三峡库区滑坡预测理论与方法[M].北京:科学出版社,2011:55-56.
[3]王鸣,易武.三峡库区杉树槽滑坡地质特征与成因机制分析[J].三峡大学学报(自然科学版),2015,37(5):44-47.
[4]王鸣,易武,邓永煌,等.基于多总体判别分析的滑坡稳定性判别模型及其应用[J].水电能源科学,2015,33(5):138-140,79.
[5]易武,王鸣.相关性优先的滑坡位移组合预测[J].武汉大学学报(工学版),2016,49(1):66-69.
[6]卢达.基于赤平投影法的岩质边坡稳定性分析[J].铁道建筑,2010,11:69—71.
[7]宋义亮,罗延婷,井培登,等.赤平极射投影法在岩质边坡稳定性分析中的应用[J].安全与环境工程,2011,18(1):103-105.
[8]蒋爵光.铁路岩石边坡[M].北京:铁道出版社,1997.
[9]戴自航,卢才金.边坡失稳机理的力学解释[J].岩土工程学报,2006,28(10):1191-1197.
[10]戴福初,陈守义,李焯芬.从土的应力应变特性探讨滑坡发生机理[J].岩土工程学报,2000,22(1):127-130.
[11]谭万鹏,郑颖人,王凯.考虑蠕变特性的滑坡稳定状态分析研究[J].岩土工程学报,2010,32(S2):5-8.
[12]侯威,张茜,楼蓉蓉,等.基于变维分形理论的滑坡空间分布特征研究[J].安全与环境工程,2012,19(4):17-21.