Experimental Study on the Soil Conditioning Materials for EPB Shield Tunneling in Silty Sand
المؤلفون المشاركون
Cheng, Chi-Hao
Liao, Shao-Ming
Huo, Xiao-Bo
Chen, Li-Sheng
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-21، 21ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-12-17
دولة النشر
مصر
عدد الصفحات
21
التخصصات الرئيسية
الملخص EN
Earth pressure balance (EPB) shield tunneling in a silty sand stratum is frequently faced with the wear of rotary cutter disc, clogging, or even collapse of workface due to its noncohesive and discrete properties of silty sand material.
Soil conditioning is an effective way to reduce the discrete and friction properties of silty sand and to increase its rheology and fluidity, thus improving the cutting performance of EPB machines.
However, soil conditioning materials were generally prepared and injected based on past limited field experiences or lab tests which were far from reality.
In this article, a ground suitability test system for simulating shield tunneling in a conditioned ground was specially developed and used in a series of tests to investigate the influences of key factors of soil conditioning on the shield cutting performance.
In addition, a field experiment of shield tunneling in silty sand of Wuhan Metro was conducted for verification.
The major findings were obtained as follows.
(1) The proposed test system performed well in simulating and assessing the cutting performance of EPB shield in conditioned soils, and the test results agreed well with the field test.
(2) The soil conditioning materials can significantly reduce the cutting torque of shield tunneling in silty sand by up to 60%–70%.
(3) The optimal foam and slurry parameters are suggested in the paper for shield tunneling in silty sand, respectively.
(4) The test results reveal that the slurry conditioning is better than the foam in decreasing the cutter torque in silty sand.
To achieve the same effect of soil conditioning, the injection ratios of foam and slurry should be 45% and 10%, respectively, to achieve the torque reduction ratio of 60%.
These findings can provide a practical reference for engineers to determine the best-fit conditioning materials and construction parameters in the silty sand stratum.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Cheng, Chi-Hao& Liao, Shao-Ming& Huo, Xiao-Bo& Chen, Li-Sheng. 2020. Experimental Study on the Soil Conditioning Materials for EPB Shield Tunneling in Silty Sand. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-21.
https://search.emarefa.net/detail/BIM-1124240
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Cheng, Chi-Hao…[et al.]. Experimental Study on the Soil Conditioning Materials for EPB Shield Tunneling in Silty Sand. Advances in Civil Engineering No. 2020 (2020), pp.1-21.
https://search.emarefa.net/detail/BIM-1124240
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Cheng, Chi-Hao& Liao, Shao-Ming& Huo, Xiao-Bo& Chen, Li-Sheng. Experimental Study on the Soil Conditioning Materials for EPB Shield Tunneling in Silty Sand. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-21.
https://search.emarefa.net/detail/BIM-1124240
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1124240
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر