摘要
受工程地质条件限制和过水流量要求,经工程总体布置和水力设计,南水北调中线京石段吴庄隧洞布置为双洞线。洞间距分析采用了工程类比法、以相邻两隧洞的破坏拱互不重叠为条件计算洞间岩体厚度、以岩柱应力不超过该处岩石允许应力为条件计算洞间岩体厚度、利用围岩稳定分析软件包BMP2000计算洞间岩体厚度等方法,通过综合分析,确定吴庄隧洞洞间岩体厚度为2倍隧洞开挖洞径,为同类工程设计和实践提供参考。
By the engineering geological conditions and over-water flow required,Wuzhuang tunnel in the Mid-route of South-North Water Diversion Project was designed as double tunnels based on general and hydraulic design.Engineering analogy method was used to analyze the hole spacing.The thickness of rock mass between two tunnels was determined on the stipulation that the destruction arch of two adjacent tunnels without overlap and the rock stress below the allowing stress.The rock stability analysis package BMP2000 was used to calculate the rock thickness between the two tunnels.Through comprehensive analysis,the rock thickness between the two holes of Wuzhuang tunnel was determined as 2 times of tunnel excavation diameter.It provided reference to similar engineering design.
出处
《南水北调与水利科技》
CAS
CSCD
2009年第6期367-368,425,共3页
South-to-North Water Transfers and Water Science & Technology
关键词
南水北调中线
隧洞
应力
新奥法
mid-route of South-to-North Water Transfer Project
tunnel
stress
new austrian tunneling method
