地铁双线隧道超前预注浆加固与分析  

Optimization and Analysis of Pre Grouting Reinforcement Scheme for Subway Double Line Tunnel Excavation

作　　者：李伟[1] 乔卫国[1] 张宇[2] 吴多华 李鹏[1] 

机构地区：[1]山东科技大学土木工程与建筑学院,青岛266590 [2]北京交通大学土木建筑工程学院,北京100044

出　　处：《科学技术与工程》2016年第27期77-82,共6页Science Technology and Engineering

基　　金：国家自然科学基金项目(51174128)资助

摘　　要：超前预注浆加固技术被广泛应用在双线交叠地铁隧道的开挖建设中,然而很多的工程多借助于工程类比经验或为求稳而过度加固施工,造成了严重的材料、人力资源浪费。鉴于此,依托北京地铁6号线区间隧道工程,借助数值模拟软件进行模拟。通过与实际监测数据相对比,验证了数值模拟具有相当的可靠性;而后利用数值模拟软件对原注浆加固范围进行优化,得出最佳预注浆加固范围在2α=120°～140°,并探究在不同硐径、埋深条件下,开挖硐室的变形特征和原支护方案的适用性。Advanced pre grouting reinforcement technology is widely used in double cross stack of subway tunnel excavation construction.However,a lot of works by on engineering analogy experience or for stability and excessive reinforcement construction,resulting in serious waste of material and human resources.In view of this,relying on tunnel project of Beijing metro line 6,with the aid of the numerical simulation software,compared with the original data to verify the reliability of numerical simulation is quite.By using numerical simulation software optimize the original grouting reinforcement scope,it is concluded that the best grouting reinforcement range in 2α =120 ° ～ 140 °,under the condition of different diameter adit,buried depth,to explore the excavation of cavern deformation characteristics and the applicability of the original support scheme.

关 键 词：地铁隧道 预注浆 数值模拟 方案优化 

分 类 号：TU942[建筑科学—建筑技术科学]