论文部分内容阅读
一、工程概况:彭公隧道是杭湖铁路的一座主要隧道,位于余杭县彭公与德清县上柏之间,距杭州37公里。隧道轴线方向为北50°东,全长1236米,设计断面为三心园拱直墙式,顶拱为素混凝土衬砌,厚50～60厘米,侧墙一般为浆砌块石,厚50厘米,衬砌后洞高7.34米,洞宽4.9米。彭公隧道工程于1959年开工,在施工期间即发现该隧道地质构造复杂,穿过岩质较差的花岗岩与玢岩,断裂较多,岩石被切割的非常破碎,且夹有黄泥和高岭土,局部岩质松软,地下水活动较剧,隧道开挖中多处有大量渗水现象,尤其是在桩号0+222～0+492段地质变
First, the project profile: Peng public tunnel is a major tunnel of Hangzhou-Huzhou Railway, located in Yuhang County, Peng and Deqing County on the Park, 37 kilometers away from Hangzhou. The axial direction of the tunnel is 50 ° east and 1236 meters long. The design section is a three-center arch straight wall with a top arch of 50-60 cm. The side wall is usually a masonry stone with a thickness of 50 cm After lining the hole 7.34 meters high, 4.9 meters wide hole. The Penggong Tunnel project started in 1959. During the construction, it was found that the tunnel was complex in geological structure and penetrated through granite and rock with poor rock quality. There were more fractures. The rock was severed and was crushed with yellow mud and kaolin , Partial soft rock, groundwater activity is more dramatic, a large number of water seepage phenomenon in tunnel excavation, especially in the station 0 +222 ~ 0 + 492 geological changes