The Development Law of the Freezing Temperature Field of a Calcareous Clay Layer
المؤلفون المشاركون
Wang, Zhi
Du, Meng
Rong, Chuanxin
Liu, Xiangyang
Ma, Maoyan
المصدر
Mathematical Problems in Engineering
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-12، 12ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-10-24
دولة النشر
مصر
عدد الصفحات
12
التخصصات الرئيسية
الملخص EN
The problem of “difficult” freezing of the calcareous clay layer fractures in freezing pipes has been investigated.
Based on the engineering background of the deep calcareous clay in the Yangcun Mine, model tests were carried out in order to conduct in-depth research on the development law of the freezing temperature field of this clay layer.
The test results have shown that the calcareous clay has a freezing point of −1.3°C under the action of both the water and the soil’s chemistry and the supercooling temperature can be as low as −3.8°C because of its complex mineral composition causing poor thermal conductivity.
This means that the calcareous clay will freeze slowly than the other layers of the soil.
The time taking for the temperature fields to intersect is 2.5 h, which is equivalent to 127.6 days in the actual engineering.
In the three sections, each temperature measurement point in the temperature field had an irregular saddle shape in the temperature space at the same time, and the ratio of the time between the formation and total melting of the frozen wall was 1 : 1.91.
The development speed of the thickness of the frozen wall from 5 h to 16 h was 17.9 mm/h, and the development speed from 16 h to 70 h was 1.96 mm/h; corresponding to the actual development speed of the thickness of the frozen wall which were 0.0123 m/d and 0.0014 m/d, respectively.
These speeds were significantly slower than the development speed of the thickness of the freezing wall of the general sandy clay layer, which were 0.0515 m/d in the early stage and 0.02 m/d in the later stage.
The thin thickness and low strength of the frozen wall of the calcareous clay layer cause the fracture of the frozen pipes, which should be paid attention to in actual engineering construction.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Wang, Zhi& Rong, Chuanxin& Du, Meng& Ma, Maoyan& Liu, Xiangyang. 2020. The Development Law of the Freezing Temperature Field of a Calcareous Clay Layer. Mathematical Problems in Engineering،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1194718
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Wang, Zhi…[et al.]. The Development Law of the Freezing Temperature Field of a Calcareous Clay Layer. Mathematical Problems in Engineering No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1194718
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Wang, Zhi& Rong, Chuanxin& Du, Meng& Ma, Maoyan& Liu, Xiangyang. The Development Law of the Freezing Temperature Field of a Calcareous Clay Layer. Mathematical Problems in Engineering. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1194718
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1194718
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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