公路路基石方开挖光面爆破施工方法

:1008O844X(2004)04O0016O03(,512400):光面爆破可以提高边坡的工程质量,使边坡岩体稳定平整美观减少超挖量和工程量,选择合理的爆破参数是路基边坡爆破达到理想效果的关键,介绍了光面爆破参数设计及施工质量控制:公路;路基;石方;光面爆破:U416.1:B,,,1工程概况,,3.54043km(k92+140~k95+680.43),30.3m3,90m,1B0.3,,,,,,,,,2m2光面爆破参数设计,,,2.11)50mm2)a,a=16d,a=0.2m,,1~23)w1.3a,w0.8m4)1/2~1/3,5),6),1~2,,,7),,,,,,,,2.2,d=50mm2.3,:2004O09O20:(1964O),,,304200412湖南交通科技HUNANCOMMUNICATIONSCIENCEANDTECHNOLOGYVol.30No.4Dec.2004:a1=8d~12d,d,cm0.8~1.0m,2.4ww,,,m(a1w),:m=a1/wm=0.8~1.0m,0.7~1.3:w=0.7a1~1.5a1,w=1.0a1~1.3a1,w0.8~1.3m2.5dd1,,(),,;,,2~32.6,,;,,,:q=qa1w:q))),g/m3;a1))),m;w))),m,q400~450g/m3,,400g/m3,1m,1~2,3光面爆破施工控制3.12~3,,35mm2#,23~25mm,2.0~2.1;,20~40cm,,,1m,1~2113.2,,,,,,2323.33.3.1钻孔的技术要求1),,,2),,,0.2m3),,3.3.2钻孔保护,,,,174:,33.3.3钻孔排水,ª30,,3.41~1.5m,2~2.5m,,,,4人工材料机械消耗,100m3::52;:41kg;:40;:50;:50m;:50m;:2.255结束语1),2),,,:[1].[J].,2003,29(3):43~44.(上接第13页)P(0x3)=26.29%;P(0x4)=39.08%;P(0x5)=49.97%;P(0x8)=71.98%98(CBR2.5mm)2.03.04.05.08.087.23%73.71%60.92%50.03%28.02%3结束语100CBR,,98(CBR2.5mm);CBR2.5mm,,98,:[1],.[M].:,2000.[2],.[M].:,1992.[3]JTJ051O93,[S].18湖南交通科技30卷