川东明月峡背斜区岩溶形态分异与构造裂隙表征参数的关系  

Relationship between karst morphology differentiation and structural fracture characterization parameters in Mingyuexia anticline area,eastern Sichuan Basin,China

作　　者：余磊 杨艳娜[1] 许模[1] 贺苏和巴特尔 曾宪明 刘洋[5] YU Lei;YANG Yanna;XU Mo;HE Suhebateer;ZENG Xianming;LIU Yang;无(State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,China;Sichuan Water Development Investigation,Design&Research Co.,Ltd.,Chengdu 611731,China;China Railway Eryuan Engineering Group Co.,Ltd.,Chongqing Company,Chongqing 400023,China;China Railway Engineering Consulting Group Co.,Ltd.,Beijing 100055,China;Chongqing Survey Institute,Chongqing 401121,China)

机构地区：[1]地质灾害防治与地质环境保护国家重点实验室(成都理工大学),成都610059 [2]四川省水发勘测设计研究有限公司,成都611731 [3]中铁二院重庆公司,重庆400023 [4]中铁工程设计咨询集团有限公司,北京100055 [5]重庆市勘测院,重庆401121

出　　处：《成都理工大学学报（自然科学版）》2023年第1期92-100,共9页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家自然科学基金项目(42272318)。

摘　　要：探讨高陡背斜区张裂隙发育规律与岩溶地貌的空间分异性之间的相互关系,以张裂隙发育规律预测岩溶空间分异性,也可以通过岩溶空间分异性预测构造张裂隙的空间分布规律。以岩层面主曲率为切入点,通过四川盆地东部明月峡背斜区现场调查、遥感解译、数理统计分析及数学建模等手段,采用岩层面的主曲率对背斜区张裂隙在不同构造部位的发育程度进行预测,分析张裂隙与岩溶地貌空间分异的相关关系。结果表明:岩层面主曲率大小、张裂隙发育概率及岩溶地貌空间分异呈现相似的空间分布规律,岩层面主曲率大的区域,地表岩溶发育较强。川东背斜区岩溶空间分异的主控因素是构造运动产生的张裂隙,岩体张裂隙发育程度决定了早期岩溶地貌的发育特征,现代岩溶地貌空间分异是岩溶正反馈机制促进原始张裂隙差异分化的结果。This paper studies the relationship between the development of tensile fissures and the spatial differentiation of karst geomorphology in the Mingyuexia anticline area of eastern Sichuan Basin.It tends to predict the spatial distribution of tectonic tensile fissure by the development law of tensile fissure and the spatial distribution law of karst.The main curvature of strata surface is used to predict the development degree of tensile fissure in different structural parts of anticline area and to analyze the correlation between tensile fissure and spatial differentiation of karst landform.The results show that the magnitude of the main curvature of the rock surface,the development probability of tensile fracture and the spatial differentiation of karst geomorphology show similar spatial distribution rules,and the surface karst development is stronger in the area with main curvature of the rock surface.It reveals that the tensile fissure induced by tectonic movement is the main controlling factor of karst spatial differentiation in the eastern Sichuan anticline area and the development degree of rock tensile fissure determines the development characteristics of the early karst landform.The spatial differentiation of modern karst landform results from the differential differentiation of the original tensile fissure promoted by the positive feedback mechanism of karst.

关 键 词：四川盆地 背斜 张裂隙 主曲率 岩溶地貌空间分异 

分 类 号：P642.25[天文地球—工程地质学]