洛阳理工学院学报（自然科学版）
洛暘理工學院學報（自然科學版）
락양리공학원학보（자연과학판）
JOURNAL OF LUOYANG INSTITUTE OF SCIENCE AND TECHNOLOGY
2015年
2期
10-12,21
,共4页
张军%高富强%杨小林
張軍%高富彊%楊小林
장군%고부강%양소림
隧道工程%管棚支护%变形监测%内力测试
隧道工程%管棚支護%變形鑑測%內力測試
수도공정%관붕지호%변형감측%내력측시
tunnel engineering%pipe -shed support%deformation monitoring%internal force test
在隧道工程中，管棚支护是控制地面沉降和限制隧道变形的有效措施。以晋祠隧道穿越大运高速公路段为例，采用水平测斜管对管棚支护的变形进行监测，通过内设的钢筋计获得管棚支护的受力信息。结果表明：管棚的垂向位移沿隧道开挖线呈凹槽形分布，且沉降量随开挖面的推进不断向前和向下运动，隧道开挖一部和三部时引起的沉降量最大；管棚的内力也具有类似的变化规律，且内力值在开挖面通过后产生明显的回弹，表明管棚超前支护作用显现，调整了围岩的压力。研究结果为类似工程的管棚超前支护设计和监测提供了依据。
在隧道工程中，管棚支護是控製地麵沉降和限製隧道變形的有效措施。以晉祠隧道穿越大運高速公路段為例，採用水平測斜管對管棚支護的變形進行鑑測，通過內設的鋼觔計穫得管棚支護的受力信息。結果錶明：管棚的垂嚮位移沿隧道開挖線呈凹槽形分佈，且沉降量隨開挖麵的推進不斷嚮前和嚮下運動，隧道開挖一部和三部時引起的沉降量最大；管棚的內力也具有類似的變化規律，且內力值在開挖麵通過後產生明顯的迴彈，錶明管棚超前支護作用顯現，調整瞭圍巖的壓力。研究結果為類似工程的管棚超前支護設計和鑑測提供瞭依據。
재수도공정중，관붕지호시공제지면침강화한제수도변형적유효조시。이진사수도천월대운고속공로단위례，채용수평측사관대관붕지호적변형진행감측，통과내설적강근계획득관붕지호적수력신식。결과표명：관붕적수향위이연수도개알선정요조형분포，차침강량수개알면적추진불단향전화향하운동，수도개알일부화삼부시인기적침강량최대；관붕적내력야구유유사적변화규률，차내력치재개알면통과후산생명현적회탄，표명관붕초전지호작용현현，조정료위암적압력。연구결과위유사공정적관붕초전지호설계화감측제공료의거。
Pipe -shed support is an effective method to control the ground subsidence and the tunnel deformation in the tunnel engineer-ing.In the case of Jinci tunnel which crosses Dayun highway,the horizontal inclinometer tubeshave been used to monitor the deforma-tion of the pipe -shed support,obtaining the stress information through internal rebars.Results show that the vertical displacement of pipe shed has a groove shaped distribution in the tunnel axis direction,and the subsidence moves forward and downward with the ad-vancing of working face and reaches the maximum in the first step and the third step of the tunnel excavation.The internal force of pipeshed has similar changes which has an obvious resilience after the passing of the working face.This shows that the advanced support of pipeshed has worked and adjusted the pressure of surrounding rock.Results of this study will offer a good foundation for advanced support design and monitoring of pipeshed in similar engineering.
