[1]宋战平,刘 京,吴焕通,等.长陡斜井钢纤维喷射混凝土单层衬砌试验研究[J].西安建筑科技大学学报:自然科学版,2013,(03):348-355.[doi:10.15986/j.1006-7930.2013.03.008]
 SONG Zhan-ping,LIU Jing,WU Huan-Tong,et al.Experimental research on single-layer tunnel lining of steel fiber shotcrete and the application in motenlin deviated well[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2013,(03):348-355.[doi:10.15986/j.1006-7930.2013.03.008]
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长陡斜井钢纤维喷射混凝土单层衬砌试验研究()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
期数:
2013年03期
页码:
348-355
栏目:
出版日期:
2013-06-30

文章信息/Info

Title:
Experimental research on single-layer tunnel lining of steel fiber shotcrete and the application in motenlin deviated well
文章编号:
1006-7930(2013)03-0348-08
作者:
宋战平12刘 京1吴焕通2牛荻涛1
(1.西安建筑科技大学土木工程学院,陕西 西安 710055;2.中铁十三局集团有限公司,天津 150008)
Author(s):
SONG Zhan-ping12LIU Jing1WU Huan-Tong2NIU Di-tao1
(1.School of Civil Engineering, Xian Univ. of Arch.& Tech., Xian 710055,China; 2.China Railway 13th Bureau Group Co. LTD, Tianjin 150008,China)
关键词:
隧道工程喷射混凝土单层衬砌现场试验监测
Keywords:
tunnel and underground engineering steel fiber shotcrete monolayer lining field test monitoring
分类号:
U 455
DOI:
10.15986/j.1006-7930.2013.03.008
文献标志码:
A
摘要:
摩天岭隧道1#通风斜井纵坡45.3%,长度接近1 400m,在此条件下施工风险高、施工难度大;采用施工简单,抗拉强度高,可随开挖掘进同步实施的钢纤维喷射混凝土单层衬砌是一种理想的技术方案.在借鉴Q系统支护设计基础上初步确定了斜井隧道单层衬砌参数;通过钢纤维喷射混凝土室内力学试验和现场规模试验,确定并推荐了斜井隧道单层衬砌最优配合比;在以上工作基础上通过数值分析、现场规模试验和监测测试,对斜井隧道单层衬砌方案进行了优化和稳定性分析.研究表明:(1)在隧道喷射混凝土中加入体积掺量0.6%左右的钢纤维,可极大地增大喷射混凝土支护结构的延展性,其峰后强度明显提高,同时可随隧道开挖掘进同步进行,是一种经济、合理、可靠地隧道和地下结构工程支护结构;(2)由于采用湿喷工艺,钢纤维喷射混凝土早期强度高,施工质量高,施工环境影响小,回弹率低;同模筑混凝土相比,地质条件适宜性强,施工工艺简单、方便、灵活,在条件适宜时可作为隧道和地下工程的永久支护.(3)建议摩天岭隧道1#通风斜井洞身段I、I及IV级围岩无地下水出露洞段采用钢纤维喷射混凝土单层衬砌取代原设计的复合衬砌
Abstract:
Motenlin 1# tunnel ventilation deviated at a vertical grade of 45.3%,with a length of nearly 1 400m.Underthese conditions, the construction is extremely difficult, especially in the construction of the secondary lining using a single layer of steel fiber lining technology which is a simple construction, have high tensile strength, and is liable for the project to meet security requirements. A single layer of steel fiber lining technology is an ideal technical solution. As there search motenlin 1#tunnel ventilation deviated well single lining the feasibility of the scheme, this paper designed for the motenlin tunnel ’s 120mhole in paragraph(7-segment,five kinds of mixing ratio)live steel fiber sprayed concrete monolayer shotcrete plate lining scale test. Through the jet concrete slab, mechanics performance test of steel fiber sprayed concrete was conducted indoors, Based on the displacement monitoring, the safety of the structure 7-segment test section steel fiber reinforced shotcrete single lining was analyzed. The practical test of#1Motenlin tunnel deviated well field steel fiber scale shows that:(1)In the tunnel shotcrete support, adding certain amount of steel fiber(steel fiber volume and rate of about 0.6%)can significantly increase the soft and after peak strength of the support structure, which isalso suitable for tunnel soft support.(2)Steel fiber reinforced shotcrete has higher strength, less construction resilience rate, less homework dust concentration, and simple construction process. Under suitable geological conditions, it can be used as a permanent support of tunnel and underground construction.(3)Steel fiber reinforced shotcrete single lining technology is proposed to#1motenlin inclined shaft hole figure class II,III and IV level around the cave section.

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备注/Memo

备注/Memo:
收稿日期:2012-12-17   修改稿日期:2013-05-05
基金项目:西部交通科技项目(200831800030);“十二五”科技支撑计划(2012BAJ17B01)
作者简介:宋战平(1974-),男,陕西蒲城人,副教授,博士后,主要从事岩石力学、隧道及地下工程方面的教学科研.
更新日期/Last Update: 2015-10-05