新疆某工程河床覆盖层岩组特征探讨  

Discussion on the Characteristics of the Rock Group in the Overburden of the River Bed of a Project in Xinjiang

作　　者：艾则孜江[1] Azezjiang(Xinjiang Institute of Water Resources and Hydropower Survey and Design,Urumqi Xinjiang 830000,China)

机构地区：[1]新疆水利水电勘测设计研究院

出　　处：《西部探矿工程》2020年第2期1-4,8,共5页West-China Exploration Engineering

摘　　要：通过对奴尔水利枢纽工程地质勘察工作,研究了该区大部分被覆盖层覆盖,且厚度较大。由于地层分布较复杂,研究河床深厚覆盖层成因机制,对坝基深厚覆盖层工程地质评价,深厚覆盖层的工程地质特性研究对于坝的顺利兴建具有非常重要的意义。坝型方面,由于坝址区覆盖层厚度较大,混凝土面板坝方案比心墙坝开挖方量大,结合设计方案,推荐坝型为沥青心墙砂砾石堆石坝。介绍了深厚覆盖层各种工程地质参数的研究并提出研究覆盖层问题时需要注意的问题和采用措施。Through the engineering geological survey of Nur water control project,it is found that most of the area is covered by overburden and the thickness is relatively large.It is very important to study the geological characteristics,genetic mechanism and engineering geological evaluation of the deep overburden of river bed for the smooth construction of the dam.As for dam type,As for the dam type,due to the thickness of the overburden layer in the dam site is large,the amount of excavation of the concrete face dam scheme is larger than the core wall dam excavation plan.Combined with the design scheme,the dam type is recommended as the gravel-rock-fill dam with asphalt core wall.This paper studies various engineering geological parameters of deep overburden and puts forward the matters needing attention and countermeasures when studying overburden problems.

关 键 词：覆盖层 坝基 实验 地质特征 

分 类 号：P642[天文地球—工程地质学]