A numerical evaluation of continuous backfilling in cemented paste backfilled stope through an application of wick drains

作     者：Li Li Yang Pengyu 

作者机构：Department of Civil Geological and Mining Engineering école Polytechnique de Montréal 

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

年 卷 期：2015年第25卷第6期

页      面：897-904页

核心收录：

学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 0709[理学-地质学] 0808[工学-电气工程] 08[工学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：the Natural Sciences and Engineering Research Council of Canada (RGPIN) the Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST) the industrial partners of the Research Institute on Mines and the Environment (RIME UQAT-Polytechnique) 

主　　题：胶结充填 回填 采场 数值 评价井 水泥浆 排水固结 应用 

摘      要：Cemented paste backfill(CPB) is gaining popularity in many underground mines worldwide. Sufficient water is added into CPB to make a flowable material for pipe transportation. Barricades are built near the drawpoints to prevent in-rush of the fill slurry. To avoid barricade failures resulting from excessive backfill pressures, backfilling is typically performed with a plug pour followed by a final pour. The interval between the two pours should be shortened or removed to increase mining productivity and avoid pipe clogging. Recently, Li proposed to apply wick drains in backfilled stopes to promote drainage and consolidation. The preliminary simulations by considering an instantaneous filling indicated that the drainage of CPB can be significantly accelerated by using wick drains. Barricade was not considered.Here, some new numerical modellings are presented with more representative filling sequences, stope geometry, and different draining configurations. The results illustrate that the stope can be backfilled continuously by using wick drains.