隧道岩溶处理技术

:20030526:(1968),,,1998,隧道岩溶处理技术李治国(471009):岩溶是隧道施工中经常遇到的一种地质现象,它容易导致开挖面涌水突泥,围岩及支护结构变形开裂及坍塌,影响施工进度,危及施工安全,破坏周围环境结合渝怀铁路隧道工程实例,提出岩溶处理的原则,探讨隧道中不同类型岩溶的处理方法:铁路隧道;岩溶;处理;原则:U455:B:10042954(2003)0036041()3:,,,,,,,,CO2SO42-,2001,624.523km,20,7km7,,,,,2,,m,,,,,,,64(1),,,:,,,,,,,,(2),,:,,,(3),,,,,,,(4),(5),,(6),,36RAILWAYSTANDARDDESIGN2003()!隧道工程!∀,,,,,,,,,,,,,,(0.5~1.0)D,,,,,,,,,,,,;,,,(2.0m3/h#Q10m3/h)(0.1MPa#P0.5MPa),3,(0.5~1.0)D,D(1)∃,%,,40mm,3.0~5.0m,,,0.5~1.0m,1.0~1.5m,;,(2)32mm,,2.0~3.0m,8mm,10~15cm,;,2.0m,,,,15cm&15cm,20mm,15cmC20(3),,,TGRM,,,;:1∋1~2∋1,0.6∋1~1.5∋1,TGRM(0.35~0.45)∋1,1∋0.6~1∋1,,,(4),2.0MPa,,,,,,0.5~1.5MPa,,0.3~1.0m(5)∃,,1.0MPa;10L/min%0.2L/(m!min),0.4L/(m!min),0.2MPa,1.0MPa,0.02L/(min!m2)37RAILWAYSTANDARDDESIGN2003()!隧道工程!(,2.0m3/h,0.2MPa4,,,(1)P#0.5MPa,,,0.5~1.0m,(0.5~1.0)D,,;,2.0m,,,,,,20mm,20cmTGRM,,,2~3,(2.0MPa),,,(2)0.5MPaP#1.0MPa,,0.5~1.0m,,0.5~1.0m,,,,,,,5.0MPa:,,,,,;,1.0MPa,(3.0m),(10.0MPa),,,2:C20,;,,,,,,,5,,,,,,,,,,,11:,;,,66.1,,,,,21~2,30m,90~108mm,238RAILWAYSTANDARDDESIGN2003()!隧道工程!~3,0.5~2.0m,1.0~3.0m,,,,25~27m,3~5m,2(:cm)6.2,,,,2m,,,,,6.3,,,,6.4,,,(1)2.0m(2.0m),,(2)2.0~10.0m,,33.0m,1.0~2.0m,,76~108mm,,1.0MPa,,37(1),,;,,(2),,,,,439RAILWAYSTANDARDDESIGN2003()!隧道工程!:20030601;:(1970),,,1990圆梁山隧道PDK354+255~PDK354+275溶洞体施工技术张民庆1,韩占波1,孙国庆1,王佩钦2,金强国2(1.471009;2.471009):圆梁山隧道是渝怀铁路上最长的隧道,该隧道穿越高压富水区,施工难度极大,曾被称为国内隧道设计施工禁区工程∀系统介绍该隧道PDK354+255~DK354+275溶洞段的地质超前预测预报超前注浆加固及支护注浆效果的检查评定及施工过程,为今后类似工程的设计施工提供借鉴依据:铁路隧道;溶洞;预测预报;注浆加固;效果评定:U459.1;U455.49:B:10042954(2003)0040071,11068m,,,,,,,,2060∀:(),48200221PDK354+245,,,,400m3/h,1.5~2.0MPa,,,,,,,1.0m,,10m;,,5~8m;,,,2,9(1),,;,,(2),,(3)(4),,,,,,,:,,;,,,,,,(5),,40RAILWAYSTANDARDDESIGN2003()!隧道工程!