This paper demonstrates a successful freezing technology used in thick overburden of Dingji Mine, and sums up the experience of safe construction by freezing method in the thick overburden.
本文阐述了丁集矿井成功的深厚表土层冻结技术，总结了深厚表土层冻结安全施工经验。
This paper demonstrates a successful freezing technology used in thick overburden of Dingji Mine, and sums up the experience of safe construction by freezing method in the thick overburden.
本文阐述了丁集矿井成功的深厚表土层冻结技术，总结了深厚表土层冻结安全施工经验。
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