青海拉西瓦水电站右岸坝前果卜岸坡变形体工程地质特征
ENGINEERING GEOLOGICAL CHARACTERISTICS OF THE GUOBU DEFORMATION BODY ON THE RIGHT SLOPE OF THE QINGHAI LAXIWA HYDROPOWER STATION IN FRONT OF THE DAM
杨天俊 1王启鸿 1杨芸1
作者信息
- 1. 中国电建集团西北勘测设计研究院有限公司,西安 710065
- 折叠
摘要
果卜岸坡变形体位于黄河上游拉西瓦水电站库区内邻近右岸坝肩.蓄水后发现岸坡有新的变形迹象,随即开始了多年的勘测研究工作.岸坡表面及深部布置了不同型式的变形观测点,对岸坡变形进行了多年的连续观测.根据勘探和观测成果,果卜岸坡变形体具有变形量大、体积大、位移速率大、岩性单一、坡面形态简单、变形范围高差大、无贯通性倾向坡外的断层型结构面等特征.对比分析早期未蓄水前照片可知,果卜岸坡在拉西瓦水库下闸蓄水前就经历了多年的变形.本文对果卜岸坡的特征进行系统分析,可供其他工程参考.
Abstract
Guobu deformation slope is located in the upstream reservoir area on the right slope of the Laxiwa Hydropower Station on the Yellow River.After water storage,new signs of deformation were found on the right slope.Subsequently,years of survey work were carried out,and different types of deformation observation points were arranged on the surface and deep part of the slope,and their deformation was continuously observed for many years.According to the exploration and deformation observation results,the deformation body of the Guobu slope has characteristics such as large deformation,large volume,large displacement rate,single rock type,simple slope surface shape,large deformation range height difference,and no fault type structural plane inclined towards the outside of the slope.After collecting and analyzing early photos before water storage,it was found that the deformation of the Guobu slope began many years before the lower gate of the Laxiwa Reservoir was filled with water.This article provides a systematic analysis of the characteristics of the deformation body of the Guobu slope,which can be used as a reference for other engineering projects.
关键词
变形体/地质特征/变形量/位移速率/分区分带Key words
deformable bodies/geological characteristics/deformation amount/displacement rate/partition and zoning引用本文复制引用
出版年
2024
NETL
NSTL
万方数据