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[1]郑立夫,高永涛,周喻,等.黏土地层联络通道冻结壁厚度优化设计及应用研究*[J].中国安全生产科学技术,2020,16(11):5-11.[doi:10.11731/j.issn.1673-193x.2020.11.001]
　ZHENG Lifu,GAO Yongtao,ZHOU Yu,et al.Research on optimized design and application of frozen wall thickness for cross-passage in clay stratum[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(11):5-11.[doi:10.11731/j.issn.1673-193x.2020.11.001]
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黏土地层联络通道冻结壁厚度优化设计及应用研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
16
期数:
2020年11期
页码:
5-11
栏目:
学术论著
出版日期:
2020-11-30

文章信息/Info

Title:
Research on optimized design and application of frozen wall thickness for cross-passage in clay stratum
文章编号:
1673-193X(2020)-11-0005-07
作者:
郑立夫; 高永涛; 周喻; 程业; 田书广
(1.北京科技大学 金属矿山高效开采与安全教育部重点实验室，北京 100083；
2.中铁十五局集团有限公司，上海 200070)
Author(s):
ZHENG Lifu;  GAO Yongtao;  ZHOU Yu;  CHENG Ye;  TIAN Shuguang
(1.Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mine,University of Science and Technology Beijing,Beijing 100083,China;
2.China Railway 15 Bureau Group Co.,Ltd.,Shanghai 200070,China)
关键词:
黏土地层; 联络通道; 直墙拱形冻结壁厚度; 优化设计
Keywords:
clay stratum;  crosspassage;  straightwall arched frozen wall thickness;  optimized design
分类号:
X951;U459.3
DOI:
10.11731/j.issn.1673-193x.2020.11.001
文献标志码:
A
摘要:
为解决传统冻结壁设计方法不能真实、合理地反映黏土地层中联络通道冻结壁实际受力情况，进而导致冻结壁厚度设计过于保守的问题，结合黏土地层直墙拱形冻结壁实际受力特点，基于对冻结壁支护压力的合理计算，提出1种适用于黏土地层冻结壁厚度设计的优化方法。结果表明：与传统设计方法相比，该方法所确定冻结壁支护压力与实际施工环境中冻结壁受力状态吻合效果更好，并且能够提供合理的安全储备；经数值计算和现场应用验证，计算所得冻结壁设计方案可以满足施工环境中的承载力及变形稳定性要求；且相较传统设计方案，所得方案兼具安全性与经济性，可有效规避因设计过于保守和冻结周期过长引起的冻胀、融沉变形过大等工程灾害的风险；该方法高效、易行，可为传统冻结壁设计方法提供必要补充，亦可为类似工程的施工设计提供有益参考。
Abstract:
In order to solve the problem that the existing traditional frozen wall design methods cannot truly and reasonably reflect the actual force on the frozen wall of crosspassage in the clay stratum,which leads to the too conservative design of frozen wall thickness,combined with the actual force characteristics of the straightwall arched frozen wall in the clay stratum,an optimization method being suitable for the design of frozen wall thickness in the clay stratum was proposed based on the reasonable calculation of the support pressure of frozen wall.The results showed that compared with the traditional design method,the support pressure of frozen wall determined by this method had better agreement effect with the force state of frozen wall in the actual construction environment,and it could provide reasonable safety reserve as well.Through the numerical calculation and field application verification,the design scheme of frozen wall calculated by this method could meet the requirements of bearing capacity and deformation stability in the construction environment.Furthermore,compared with the traditional design scheme,the obtained scheme was not only safe but also economical,and it could effectively avoid the risks of engineering disasters caused by the over conservative design and the too long freezing period,such as the excessive deformation induced by frost heave and thaw settlement,etc.The method is efficient and easy to implement.Thus,it can provide necessary supplements to the existing traditional design method of frozen wall,and also provide useful reference for the construction design of similar projects in the future.

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备注/Memo

备注/Memo:
收稿日期： 2020-08-31；网络首发日期： 2020-11-23
* 基金项目： 国家自然科学基金项目(51674015)；中央高校基本科研业务费专项资金项目(FRF-TP-18-016A3)
作者简介： 郑立夫，博士研究生，主要研究方向为岩土工程和隧道工程。
更新日期/Last Update: 2020-12-06