隧道建设
隧道建設
수도건설
TUNNEL CONSTRUCTION
2014年
12期
1207-1213
,共7页
陶伟%管会生%郭立昌%黄松和
陶偉%管會生%郭立昌%黃鬆和
도위%관회생%곽립창%황송화
斜井隧道%双模式盾构%油缸布局%管片受力
斜井隧道%雙模式盾構%油缸佈跼%管片受力
사정수도%쌍모식순구%유항포국%관편수력
inclined tunnel%dual-mode shield%arrangement of thrust cylinders%force on segment
盾构推进油缸的布局合理性关系到隧道管片拼装质量,在斜井隧道施工中则更为突出。以煤矿斜井双模式盾构为例,通过分析不同掘进模式和工况下推进油缸布局优化条件以及根据单个管片受力均匀、管片环整体受力平衡及各分区推力均方差最小的优化原则,完成推进油缸的位置及分区优化。推进油缸布局优化后,各管片受力均匀,衬砌环整体受力平衡,各分区推力相近,有利于避免管片被压溃,研究结果对盾构推进系统的选型和设计有指导作用。
盾構推進油缸的佈跼閤理性關繫到隧道管片拼裝質量,在斜井隧道施工中則更為突齣。以煤礦斜井雙模式盾構為例,通過分析不同掘進模式和工況下推進油缸佈跼優化條件以及根據單箇管片受力均勻、管片環整體受力平衡及各分區推力均方差最小的優化原則,完成推進油缸的位置及分區優化。推進油缸佈跼優化後,各管片受力均勻,襯砌環整體受力平衡,各分區推力相近,有利于避免管片被壓潰,研究結果對盾構推進繫統的選型和設計有指導作用。
순구추진유항적포국합이성관계도수도관편병장질량,재사정수도시공중칙경위돌출。이매광사정쌍모식순구위례,통과분석불동굴진모식화공황하추진유항포국우화조건이급근거단개관편수력균균、관편배정체수력평형급각분구추력균방차최소적우화원칙,완성추진유항적위치급분구우화。추진유항포국우화후,각관편수력균균,츤체배정체수력평형,각분구추력상근,유리우피면관편피압궤,연구결과대순구추진계통적선형화설계유지도작용。
Rational arrangement of thrust cylinders of shields plays an important role in ensuring the segment erection quality,especially in the case of inclined tunnels.In the paper,the conditions for the optimization of the arrangement of the thrust cylinders of a dual-mode shield are analyzed,the principle for the optimization of the thrust cylinders,i.e., uniform force on each individual segment,balanced force on the segment ring and minimum mean square error of force of each zone,are analyzed.The positions and zoning of the thrust cylinders are determined and good results have been achieved .The study can provide reference for the type selection and design of thrust systems of shields of similar projects in the future.