北京新建道路工程随建电力隧道工法设计比选  

Comparison and selection of construction methods for new road projects with electric tunnels in Beijing

作　　者：张尔旋 丁萌 Zhang Erxuan;Ding Meng(Beijing Power Energy Engineering Consulting Co.,Ltd.,Beijing 100062,China)

机构地区：[1]北京国网京能工程咨询有限公司,北京100062

出　　处：《山西建筑》2023年第11期165-168,共4页Shanxi Architecture

摘　　要：以北京市大兴区礼贤镇兴礼街道路工程随建电力隧道为例,提出了明开隧道放坡土钉墙支护、明开隧道钢板桩支护、暗挖隧道全断面帷幕注浆加固三种工法设计方案,并分别从造价成本、管理成本等角度对三种方案进行设计比选。结论为明开隧道放坡土钉墙支护方案工程造价最低,但占地面积大,且在有地下水的地质条件下施工困难,不适用于该工程;明开隧道钢板桩支护方案虽同时具有挡土及隔水作用,但由于隧道埋深较大,其造价成本与暗挖工法相比并不具明显优势,且需消耗资源更多;暗挖隧道全断面帷幕注浆加固方案工程造价较高,但对周边环境影响小,可大量减少建设单位计划外成本投入,能保证工期按计划稳定推进。In this paper,three design options are proposed for the open tunnel slope soil nail wall support,open tunnel steel sheet pile support and concealed tunnel curtain grouting reinforcement from the perspective of cost and management cost.It is concluded that the open tunnel slope nail wall support scheme has the lowest cost,but occupies a large area and is difficult to construct under the geological conditions of groundwater,so it is not suitable for this project,the open tunnel sheet pile support scheme has both earth and water retaining effects,but the depth of the tunnel in this project is large,so its cost does not have obvious advantages compared with the concealed method,and requires more resources;the concealed tunnel full section curtain grouting reinforcement program is more expensive,but the impact on the surrounding environment is small,can greatly reduce the construction unit unplanned cost input,can ensure that the construction period is stable according to the plan.

关 键 词：电力隧道 设计比选 钢板桩 

分 类 号：TU941[建筑科学—建筑技术科学]