songzb60 - 2007/11/19 9:06:00
1、隧道的总体实测项目有哪些?øûè¿5Ô}bbs.3c3t.com×+îHP»
答:1、行车道,2、净总宽,3、隧道净高,4、轴线偏位5、路线中心线与隧道中心线的衔接6、边坡仰坡。øûè¿5Ô}bbs.3c3t.com×+îHP»
2、公路隧道常见的质量问题有哪些?øûè¿5Ô}bbs.3c3t.com×+îHP»
答:1.隧道渗漏;øûè¿5Ô}bbs.3c3t.com×+îHP»
2.衬砌开裂;øûè¿5Ô}bbs.3c3t.com×+îHP»
3.限界受侵;øûè¿5Ô}bbs.3c3t.com×+îHP»
4.衬砌结构同围岩结合不密实;øûè¿5Ô}bbs.3c3t.com×+îHP»
5.通风、照明不良。øûè¿5Ô}bbs.3c3t.com×+îHP»
3、注浆效果检查方法øûè¿5Ô}bbs.3c3t.com×+îHP»
答:(1)、分析法 分析注浆记录,查看每个孔的注浆压力、注浆量是否达到要求;注浆过程中漏浆、跑浆是否严重,从而以浆液注入量估算浆液扩散半径,分析是否与设计相符。øûè¿5Ô}bbs.3c3t.com×+îHP»
(2)、检查孔法 用地质钻机按设计孔位和角度钻检查孔,提取岩芯进行鉴定;同时测定检查孔的吸水量。øûè¿5Ô}bbs.3c3t.com×+îHP»
(3)、声波监测法 用声波探测仪测量注浆前后岩体声速、振幅及衰减系数等来判断注浆效果。øûè¿5Ô}bbs.3c3t.com×+îHP»
4、激光断面仪法的操作步骤?øûè¿5Ô}bbs.3c3t.com×+îHP»
答:(1)选择测量断面,确定仪器架设位置;øûè¿5Ô}bbs.3c3t.com×+îHP»
(2)安放仪器;øûè¿5Ô}bbs.3c3t.com×+îHP»
(3)设定仪器参数和扫描间距;øûè¿5Ô}bbs.3c3t.com×+îHP»
(4)自动扫描测量断面;øûè¿5Ô}bbs.3c3t.com×+îHP»
(5)检查测量断面,进行修正和补测;øûè¿5Ô}bbs.3c3t.com×+îHP»
(6)数据分析。øûè¿5Ô}bbs.3c3t.com×+îHP»
5、喷射混凝土的喷射工艺有哪些?øûè¿5Ô}bbs.3c3t.com×+îHP»
答:干喷、湿喷和潮喷;潮喷工艺与干喷工艺相近,在干喷的拌和料中适量加水即为潮喷。øûè¿5Ô}bbs.3c3t.com×+îHP»
浪迹天涯 - 2007/11/22 15:56:00
感谢谢楼主无私奉献!øûè¿5Ô}bbs.3c3t.com×+îHP»
lqx_0729 - 2007/11/23 18:33:00
谢谢øûè¿5Ô}bbs.3c3t.com×+îHP»