Freezing on demand: A new concept for mine safety and energy savings in wet underground mines

作     者：Mahmoud A.Alzoubi Ahmad Zueter Aurelien Nie-Rouquette Agus P.Sasmito 

作者机构：Department of Mining and Materials Engineering McGill University 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2019年第29卷第4期

页      面：621-627页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：McGill Engineering Doctoral Award(MEDA) Fonds de recherche du Québec-Nature et technologies(FRQNT)-Bourses de doctorat(B2X)for supporting this research 

主　　题：Artificial ground freezing Freezing on demand Energy saving Conjugate heat transfer Porous media 

摘      要：The artificial ground freezing(AGF)systems are designed to operate continuously for an extended period of time to control the groundwater seepage and to strengthen the groundwater structure surrounding excavation *** mode of operation requires a massive amount of energy to sustain the thickness of the frozen ***,it is of great interest to propose new concepts to reduce energy consumption while providing sufficient structural stability and safe *** paper discusses the principle of the freezing on demand(FoD)by means of experiment and mathematical model.A lab-scale rig that mimics the AGF process is conceived and *** setup is equipped with more than 80 thermocouples,flow-meters,and advanced instrumentation system to analyze the performance of the AGF process under the FoD concept.A mathematical model has been derived,validated,and utilized to simulate the transient FoD *** results suggest that the overall energy saving notably depends on the coolant’s temperature;the energy saving increases while decreasing the coolant inlet ***,applying the FoD concept in an AGF system leads to a significant drop in energy consumption.