摘要
沙坡头坝基岩体主要为石炭系泥岩和页岩。受区域多期构造运动影响,岩体中微结构面发育,泥岩和页岩干密度小、亲水性强、失水干裂、遇水软化、膨胀性,力学强度低,属极软岩。通过对泥岩、页岩物理力学特性、水理特性及变形特性研究,提出坝基软岩保护及处理措施,解决了工程设计和地基处理技术难题。
The rock mass is mainly Carboniferous mudstone and shale at the dam foundation of Shapotou Water Control Project.Affected by regional tectonic movement,micro-structure is developed in the rock.Mudstone and shale belong to very soft rock which are characterized by little dry density, strong hydrophilicity,dehydration cracking,water softening,swelling,and low mechanical strength.The text puts forward the protection and treatment measures of dam foundation soft rock by studying the physical and mechanical properties,hydraulic and deformation characteristics of mudstone and shale,and solves the technical problems in engineering design and foundation treatment.
出处
《水利水电工程设计》
2012年第2期30-33,63,共4页
Design of Water Resources & Hydroelectric Engineering
关键词
坝基软岩
力学特性
变形特性
处理措施
沙坡头水利枢纽
soft rock of dam foundation
mechanical property
deformation characteristics
treatment measures
Shapotou Water Control Project
