[1]任建喜,孙杰龙,张 琨,等.富水砂层冻结斜井内外壁受力特性实测[J].西安科技大学学报,2017,(06):784-789.[doi:10.13800/j.cnki.xakjdxxb.2017.0603 ]
 REN Jian-xi,SUN Jie-long,ZHANG Kun,et al.In-situ measurement on stress of frozen inner and outer inclined shaft lining in water-rich sand stratum[J].Journal of Xi'an University of Science and Technology,2017,(06):784-789.[doi:10.13800/j.cnki.xakjdxxb.2017.0603 ]
点击复制

富水砂层冻结斜井内外壁受力特性实测(/HTML)
分享到:

西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2017年06期
页码:
784-789
栏目:
出版日期:
2017-11-30

文章信息/Info

Title:
In-situ measurement on stress of frozen inner and outer inclined shaft lining in water-rich sand stratum
文章编号:
1672-9315(2017)06-0784-06
作者:
任建喜孙杰龙张 琨董西好宋勇军
西安科技大学 建筑与土木工程学院,陕西 西安 710054
Author(s):
REN Jian-xiSUN Jie-longZHANG KunDONG Xi-haoSONG Yong-jun
(College of Civil and Architectural Engineering,Xi'an University of Science and Technology,Xi'an 710054,China)
关键词:
富水砂层 冻结法 斜井内外壁 受力特性 实测研究
Keywords:
water-rich sand stratum freezing method inner and outer inclined shaft lining pressure characteristics in-situ measurement
分类号:
TD 262
DOI:
10.13800/j.cnki.xakjdxxb.2017.0603
文献标志码:
A
摘要:
为了解决富水砂层斜井冻结法凿井的技术难题,以陕北某冻结斜井为研究对象,采用现场实测的方法,对冻结压力、冻结斜井内外壁钢筋受力、混凝土应变进行了研究,分析了冻结斜井内外壁受力特性。结果表明:在冻结法凿井过程中,外壁受力可分为3个变化阶段,缓慢增长阶段、快速增长阶段以及平稳阶段; 内壁纵向钢筋主要承受拉应力,最大拉应力为13.8 MPa,远小于其屈服强度300 MPa,内壁处于安全状态; 内壁环向钢筋先受拉后受压,其所受最大压应力为35.06 MPa,也小于其屈服强度,进一步说明内壁处于安全状态; 内壁混凝土应变可分为受拉阶段、快速受压阶段和稳定受压阶段3个变化阶段。研究成果为指导工程实践提供了一定依据。
Abstract:
In order to solve the technological problems of freezing inclined shaft in the water-rich sand stratum,the paper took a freezing inclined shaft in northern Shaanxi as s research object.By using the in-situ measurement method,we measured and analyzed the pressure of freezing wall,the stress of steel bars of the inner and outer shaft,and the concrete strain and mechanical properties of shaft.The results show that the pressure of outer shaft can be divided into three stages of change: slow increase stage,rapid increase stage and stable stage.The vertical steel bars of inner shaft mainly bear tensile stress,and the maximum tensile stress is 13.8 MPa; the circular steel bars of inner shaft bear tensile stress first,then turn to compression,and the maximum tensile stress is 35.06 MPa,which is far less than the yield strength of 300 MPa.The concrete strain of inner shaft can be divided into three stages of change:under tensile stress stage,increase and stable stage under compressive stress.

参考文献/References:

[1] 马茂燕,程 桦.深厚冲积层冻结压力研究进展及展望[J].安徽建筑工业学院学报,2007,15(5):8-12. MA Mao-yan,CHENG Hua.Development and prospects of research on freezing pressure of frozen shaft in deep thick alluvium[J].Journal of Anhui Institute of Archi-tecture and Industry,2007,15(5):8-12.
[2] 杨更社,奚家米.煤矿立井冻结设计理论的研究现状与展望分析[J].地下空间与工程学报,2010,6(3):627-635. YANG Geng-she,XI Jia-mi.Review and prospects of research on freezing design theory of coal mine shaft[J].Chinese Journal of Underground Space and Engineering,2010,6(3):627-635.
[3] 王衍森,张开顺,李炳胜,等.深厚冲积层中冻结井外壁钢筋应力的实测研究[J].中国矿业大学学报,2007,36(3):287-291. WANG Yan-sen,ZHANG Kai-shun,LI Bing-sheng,et al.In-situ measurement on the stress of reinforcing steel bar of outer freezing shaft wall in deep alluvium[J].Journal of China University of Mining and Technology,2007,36(3):287-291.
[4] 樊九林,万援朝,王渭明.斜井表土冻结凿井法施工技术[J].煤炭科学技术,2013,41(9):143-150. FAN Jiu-lin,WAN Yuan-chao,WANG Wei-ming.Construction technology of freeze sinking method in inclined shaft soil layer[J].Coal Science and Technology,2013,41(9):143-150.
[5] 刘 波,李 岩.斜井冻结壁温度场分布规律研究[J].煤炭科学技术,2012,40(12):4-7. LIU Bo,LI Yan.Study on temperature field distribution law of freezing wall for inclined shaft[J].Coal Science and Technology,2012,40(12):4-7.
[6] 陈庆章,张步俊.斜井冻结壁厚度计算方法[J].建井技术,2013,34(2):39-42. CHEN Qing-zhang,ZHANG Bu-jun.The frozen shaft wall design of freezing inclined shaft[J].Mine Construction Technology,2013,34(2):39-42.
[7] 孟庆彬,韩立军,石荣剑,等.煤矿斜井井筒过流砂层施工技术研究及应用[J].岩土工程学报,2015,37(5):900-910. MENG Qing-bin,HAN Li-jun,SHI Rong-jian,et al.Study and application of construction technology for inclined shafts penetrating drift sand strata in coal mine[J].Chinese Journal of Geotechnical Engineering,2015,37(5):900-910.
[8] 侯运炳,贾进峰,赵易鑫,等.大断面斜井冻结施工多排管冻结温度场模拟研究[J].煤炭工程,2012(12):77-80. HOU Yun-bing,JIA Jin-feng,ZHAO Yi-xin,et al.Simulation study on freezing temperature field with multi row freezing tubes in construction of large cross section mine inclined shaft[J].Coal Engineering,2012(12):77-80.
[9] 陈祥恩,杜长龙.马泰壕煤矿斜井冻结施工技术[J].煤炭科学技术,2009,37(11):21-23. CHEN Xiang-en,DU Chang-long.Freezing construction technology of mine inclined shaft in Mataihao mine[J].Coal Science and Technology,2009,37(11):21-23.
[10]张向东,张树光,李永靖,等.冻土三轴流变特性试验研究与冻结壁厚度的确定[J].岩石力学与工程学报,2004,23(3):395-400. ZHANG Xiang-dong,ZHANG Shu-guang,LI Yong-jing,et al.Testing study on triaxial creep properties of frozen soil to determine thickness of frozen wall[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(3):395-400.
[11]LIU Bo,LI Dong-yang.A simple test method to measure unfrozen water content in clay-water systems[J].Cold Regions Science and Technology,2012,78(11):97-106.
[12]经来旺,高全臣,徐辉东,等.冻结壁融化阶段井壁温应力研究[J].岩土力学,2004,25(9):1 357-1 362. JING Lai-wang,GAO Quan-chen,XU Hui-dong,et al.Thermal stress analysis of shaft in melting stage of frozen wall[J].Rock and Soil Mechanics,2004,25(9):1 357-1 362.
[13]张 文.我国冻结法凿井技术的现状与成就[J].建井技术.2012,33(3):4-13. ZHANG Wen.The situation of freezing method sinking technology and achievement in china[J].Mine Construction Technology,2012,33(3):4-13.
[14]王衍森,黄家会,杨维好.特厚冲积层中冻结井外壁温度实测研究[J].中国矿业大学学报,2006,35(4):468-472. WANG Yan-sen,HUANG Jia-hui,YANG Wei-hao.Temperature measurement of outer shaft wall during freezing sinking in deep alluvium[J].Journal of China University of Mining and Technology,2006,35(4):468-472.
[15]孙杰龙.穿越富水砂层冻结斜井冻结壁变形规律研究[D].西安:西安科技大学,2015. SUN Jie-long.Research on the deformation laws of freezing inclined shaft crossing water-rich sand stratum[D].Xi'an:Xi'an University of Science and Technology,2015.
[16]HAN Tao,YANG Wei-hao,YANG Zhi-jiang,et al.Monitoring study on shaft lining concrete strain in freeing water-bearing soft rock during mine shaft construction period in west China[J].Procedia Engineering,2011,26:992-1 000.
[17]Yoon J U,Han J W,Joo E J,et al.Effect of tunnel shapes in structural and hydraulic interaction[J].KSCE Journal of Civil Engineering,2014,18(3):735-741.

备注/Memo

备注/Memo:
收稿日期:2016-09-13责任编辑:高 佳
基金项目:陕西省科学研究发展计划项目(2016XT-04,2016XT-25,2015XT-15); 陕西省教育厅科研计划项目(16JK1512); 陕西省重点研发计划(2017GY-156)
通讯作者:任建喜(1968-),男,陕西西安人,教授,博士生导师,E-mail:renjianxi1968@163.com
更新日期/Last Update: 2017-12-11