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冰川冻土 ›› 2013, Vol. 35 ›› Issue (5): 1232-1236.doi: 10.7522/j.issn.1000-0240.2013.0139

• 寒区科学与技术 • 上一篇    下一篇

白垩系地层深井冻结壁温度场分布规律

周盛全1,2, 陈海明1,2   

  1. 1. 安徽理工大学 土木建筑学院, 安徽 淮南 232001;
    2. 安徽理工大学 矿山地下工程教育部工程研究中心, 安徽 淮南 232001
  • 收稿日期:2013-02-21 修回日期:2013-07-11 出版日期:2013-10-25 发布日期:2013-11-07
  • 作者简介:周盛全(1975-),男,安徽太湖人,讲师,2006年在合肥工业大学获硕士学位,现主要从事岩土与地下工程教学与研究.E-mail:Lqpzsq@163.com
  • 基金资助:
    国家自然科学基金项目(51271071)资助

Wall Temperature Field of a Deep Frozen Shaft in Cretaceous Strata

ZHOU Sheng-quan1,2, CHEN Hai-ming1,2   

  1. 1. School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan Anhui 232001, China;
    2. Engineering Research Center of Mining Underground Engineering (Ministry of Education), Anhui University of Science and Technology, Huainan Anhui 232001, China
  • Received:2013-02-21 Revised:2013-07-11 Online:2013-10-25 Published:2013-11-07

摘要: 西部地区主要为白垩系软岩地层, 煤炭资源储量大, 成为我国重要产煤区. 白垩系软岩地层冻结壁温度场分布规律尚不清楚, 给白垩系地层冻结法凿井设计与施工带了一定的困难. 通过现场实测、室内试验和数值模拟等手段, 获得了白垩系地层冻结软岩热物理参数分布规律、力学特性及深井冻结壁冻融规律. 测点冻结温度场反演白垩系冻结软岩导热系数值一般介于3.328~3.465 W·m-1·K-1之间, 现场实测表明: 白垩系地层融冻时间比一般为1.0~1.2之间. 研究白垩系地层冻融规律, 对指导我国西部地区白垩系地层冻结法凿井设计与施工具有重要的理论参考价值.

关键词: 现场实测, 数值模拟, 冻结法凿井, 白垩系地层, 冻融规律

Abstract: Western China, where the strata of Cretaceous have been widely distributed, has become China's important coal producing area because of the large amount of coal resources. The frozen wall temperature field in Cretaceous soft rock strata is not clear, which brings some difficulties to the design and construction of freezing shaft sinking. The thermal physical parameters distribution, mechanical properties of the frozen soft rock and freezing and thawing rule of deep frozen wall in Cretaceous strata are able to gain by means of modern technical means, such as field measurement, laboratory test, numerical simulation and so on. Derived from the monitored freezing point and freezing temperature field, it is revealed that conductivity value of the frozen soft rock in Cretaceous strata is generally in 3.328~3.465 W·m-1·K-1. In-situ measurements show that the time ratios of thawing-freezing in Cretaceous strata are usually between 1.0 and 1.2.These results will be useful for design and construction of freezing shaft sinking in Cretaceous strata in western China.

Key words: in-situ measurement, numerical simulation, freeze sinking, Cretaceous strata, law of freezing-thawing

中图分类号: 

  • P642.14