西气东输中卫黄河穿越隧道水文地质分析
Analysis on Hydrogeology of Zhongwei Yellow River Tunnel Cross in WestEast Gas Pipeline Project
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- 引用格式:
-
卿春和,康,胜,赵,普,徐,玮,李静林.西气东输中卫黄河穿越隧道水文地质分析[J].天然气与石油,2010,28(5):0.doi:
.Analysis on Hydrogeology of Zhongwei Yellow River Tunnel Cross in WestEast Gas Pipeline Project[J].Natural Gas and Oil,2010,28(5):0.doi:
- DOI:
- 作者:
- 卿春和，康 胜，赵 普，徐 玮，李静林
- 作者单位:
- 中国石油集团工程设计有限责任公司西南分公司
- 关键词:
- 西气东输；水下隧道；水文地质分析；渗透系数；隧道埋深
WestEast Gas Pipeline Project; Underwater tunnel; Hydrogeology analysis; Permeability coefficient; Tunnel burial depth
- 摘要:
- 西气东输中卫黄河穿越隧道长度约1200 m，净跨度5.。3 m、净高4.5 m。隧道洞身位于黄河河床之下最大深度约100 m。隧址区地层经受构造变动时间长，强度大，断层较多，主要断裂为香山—天景山断裂带。受断裂影响，主要发育一些短轴背斜和向斜。隧道洞身位于断层影响带内，其中次级断裂和层间错动很发育。隧道围岩为寒武系香山群磨盘井组细粒长石石英砂岩夹千枚状板岩、绢云母化千枚岩，岩层陡倾或直立，岩体较破碎。地下水类型为基岩裂隙潜水，水位埋藏较浅，受大气降水和黄河河水渗入补给。隧道勘察过程中，加强了水文地质分析；根据水文地质分析成果，对隧道位置选择和隧道埋深确定提供了恰当的依据。实践证明，合理的水文地质分析对隧道工程方案制订、结构设计、施工方法选择、施工安全、顺利贯通和正常营运等都具有现实意义。
Zhongwei Yellow River Tunnel in WestEast Gas Pipeline Project is about1200mlong, with net span 53m and clear height 45m, which is under the Yellow River bed, with the maximum depth of about100m. Briefly analyzed are geological tectonic and hydrological characteristics of the place where the tunnel is located, analysis results provide proper basis for tunnel location selection and tunnel burial depth determination. Practice proves that the reasonable hydrogeology analysis has practical significance for tunnel construction option determination, structural design, construction method selection, construction safety and proper operation.
