浅析甘肃陇东地区马兰黄土工程地质特性  

Engineering Geological Characteristics of Malan Loess in Longdong Area of Gansu Province

作　　者：朱金龙 ZHU Jinlong(Gansu Water Resources and Hydropower Survey,Design and Research Institute CO.LTD.,Lanzhou 730000,China)

机构地区：[1]甘肃省水利水电勘测设计研究院有限责任公司,甘肃广兰州730000

出　　处：《河南水利与南水北调》2023年第9期102-103,共2页Henan Water Resources & South-to-North Water Diversion

摘　　要：甘肃陇东地区的马兰黄土,分布于塬、梁、峁顶部及河(沟)谷斜坡及河道的阶地上。在该区进行工程建设,当建筑物基础置于马兰黄土中,易发生地基土体湿陷沉降变形而导致建筑物破坏。因此,必须分析研究陇东地区马兰黄土工程特性。经对陇东各县区取代表性Ⅰ级原状土样的大量室内试验,采用数据统计和地质分析等方法,浅析了陇东各县区内不同地貌单元区、不同状态下马兰黄土的湿陷性、渗透性、压缩性、抗剪性、击实性等物理力学性质和工程地质特性。Malan loess in Longdong area of Gansu Province is distributed on the terraces of Yuan,Liang,Mao and the slopes of river valley and river course.During the engineering construction in this area,when the foundation of the building is placed in Malan loess,it is easy to cause the collapse of the foundation soil.Therefore,it is necessary to analyze and study the engineering characteristics of Malan loess in eastern Gansu Province.After a large number of indoor tests on representative grade I original soil samples in Longdong counties,the physical and mechanical properties of collapsibility,permeability,compressibility,shear resistance,compaction property and engineering geological characteristics of Malan loess under different geomorphic units and different states are analyzed by means of data statistics and geological analysis.

关 键 词：甘肃陇东地区 马兰黄土 湿陷性 渗透性 压缩性 抗剪性 击实性 

分 类 号：TV223.2[水利工程—水工结构工程]