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隧道监控量测基本知识--第1页
监控量测基本知识
量测方法.
(一)地质素描···············································································································································2·
(二)拱顶下沉和地表下沉···························································································································4·
(三)坑道周边相对位移··································································································································4·
(四)、测试方法及注意事项····························································································································5·
(五)数据整理···············································································································································5·
(六)测试段面的确定···································································································································6·
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隧道监控量测基本知识--第1页
隧道监控量测基本知识--第2页
监控量测基本知识
量测方法
(一)地质素描
与隧道施工进展同步进行的洞内围岩地质(和支护状况)的观
察及描述,通常称为地质素描。是隧道设计和施工过程中不可缺少的
的地质勘查工作,是对围岩工程地质特性和支护措施和理性的最直
观、最简单、最经济的描述和评价。一般包括对以下内容的描述:
①代表性测试断面的位置、形状、尺寸及编号;
②岩石名称、结构、颜色;
③层理、片理、解理裂隙、断层等各种软弱面的产状、宽度、延
伸情况、连续性、间距等;个结构面的成因类型、力学属性、
粗燥程度、充填的物质成分和泥化、软化情况;
④岩脉穿插情况及其与围岩接触关系,软硬程度、破碎程度。
⑤岩体风化程度、特点、抗风化能力;
⑥地下水的类型、出露位置、水量大小及喷锚支护施工的影响等;
⑦施工开挖方式方法、喷锚支护参数及循环时间;
⑧围岩内鼓、弯折
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