| 制冷液温度对地下冷冻墙制冷效果影响的有限元分析 |
| 投稿时间：2015-02-06 修订日期：2015-04-21 点此下载全文 |
| 引用本文：翟国兵,赵大军,张金宝,等.制冷液温度对地下冷冻墙制冷效果影响的有限元分析[J].钻探工程,2015,42(6):53-58.ZHAI Guo-bing,ZHAO Da-jun,ZHANG Jin-bao,et al. Finite Element Analysis on the Influence of Cooling Liquid Temperature on the Refrigeration Effect of Underground Frozen Wall[J]. Drilling Engineering, 2015,42(6):53-58. |
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| 基金项目:教育部、财政部、吉林省人民政府联合资助的跃升计划项目“国家潜在油气资源（油页岩勘探开发利用）产学研用合作创新项目”之“油页岩地下冷冻墙技术研究”（编号：OSR-06-02） |
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| 中文摘要:油页岩原位开采、矿山竖井施工、基坑支护等工程中，常采用地下冷冻墙进行止水和护壁。在地下冷冻墙制冷系统中,制冷液温度影响冻结交圈时间，进而影响地下冷冻墙的制冷效率，更影响工程的施工成本及运行费用。通过有限元模拟，对制冷过程中地下温度场进行理论分析，得出制冷液温度对地下温度场的影响规律，并对制冷液温度进行优化，得到在制冷机组制冷或风冷制冷方式下，制冷液温度应在-10～-15 ℃较为合适的结论，为提高地下冷冻墙制冷效率提供理论指导。 |
| 中文关键词:地下冷冻墙 有限元模拟 制冷液温度 制冷效率 |
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| Finite Element Analysis on the Influence of Cooling Liquid Temperature on the Refrigeration Effect of Underground Frozen Wall |
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| Abstract:For oil shale in-situ mining, mine shaft construction and foundation pit support, underground frozen wall should be built to prevent underground water flowing into the mining area and the leakage of oil and gas. Cooling liquid temperature of underground frozen wall not only affects freezing closure time, but also affects the refrigeration efficiency of the underground frozen wall and further affects the entire costs of the construction and operation. By the finite element simulation and the theoretical analysis on the underground temperature field in the refrigeration process, the influence law of cooling fluid temperature on the underground temperature field was found and the cooling liquid temperature was optimized. It was concluded that under refrigeration modes of refrigeration unit or air cooling, the appropriate temperature of cooling fluid should be -10 to -15℃, which could be the theoretical guidance to improve the refrigeration efficiency of underground frozen wall. |
| keywords:underground frozen wall finite element simulation cooling liquid temperature refrigeration efficiency |
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