基于暗挖法的浅埋洞室支护新方式及其工程应用.pdf

第26 卷 第 10 期 岩石力学与工程学报 Vol.26 No.10 2007 年 10 月 Chinese Journal of Rock Mechanics and Engineering Oct.，2007 基于暗挖法的浅埋洞室支护新方式及其工程应用 1，2 1，2 1，2 丁文其 ，王晓形 ，杨林德 (1. 同济大学 地下建筑与工程系，上海 200092 ；2. 同济大学 岩土及地下工程教育部重点实验室，上海 200092) 摘要：为满足浅埋大跨度地下洞室内壁保持原貌、避免大开挖以保护地表环境以及降低支护造价等要求，提出一种 基于暗挖法的浅埋洞室支护新方式。这是一种内嵌支护方式，即在覆盖层中植入纵横向小隧道棚支护结构，形成围 岩与支护结构共同作用的支护体系。该支护方式可在浅埋洞室工程中有效地控制围岩发挥其部分自承载能力。将该 支护方式应用于某旅游景点的大跨度浅埋地下洞室中，监测数据表明该支护方式可行，围岩的自承载比例达 47% 。 关键词：岩石力学；暗挖法；地下洞室；支护方式；小隧道棚；环境保护 中图分类号：TU 45 文献标识码：A 文章编号：1000 –6915(2007)10 –2049 –07 NEW SUPPORTING METHOD FOR SHALLOW-BURIED CAVERN BASED ON MINING METHOD AND ITS ENGINEERING APPLICATION 1，2 1，2 1，2 DING Wenqi ，WANG Xiaoxing ，YANG Linde (1. Department of Geotechnical Engineering ，Tongji University，Shanghai 200092 ，China；2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education ，Tongji University，Shanghai 200092 ，China) Abstract ：In order to meet the requirements of maintaining the original condition of rock face of underground cavern，avoiding heavy excavation to protect ground environment，and reducing support cost of large-span shallow buried cavern ，a new supporting method for shallow-buried cavern based on the mining method is presented. It is a built-in method that some crisscross small tunnel sheds are embedded in the overburden layer. So the supporting system of interaction between the surrounding rock and supporting structure is formed. The surrounding rock can display its self load-bearing capacity in the shallow-buried cavern according to this method. And the self load-bearing capacity is controllable in some degree.