基于多功能模型箱的排土场相似模拟实验设计  

Design of similarity simulation experiment for dump based on multi-function model box

作　　者：赵红泽[1,2] 秦斌德 林泽辰 邵志奔 杜海瑞 朱文博 ZHAO Hongze;QIN Binde;LIN Zechen;SHAO Zhiben;DU Hairui;ZHU Wenbo(School of Energy and Mining Engineering,China University of Mining&Technology(Beijing),Beijing 100083,China;State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;Dadi Engineering Development(group)Co.,Ltd.,Beijing 100102,China)

机构地区：[1]中国矿业大学(北京)能源与矿业学院,北京100083 [2]中国矿业大学(北京)深部岩石力学与地下工程国家重点实验室,北京100083 [3]大地工程开发(集团)有限公司,北京100102

出　　处：《实验技术与管理》2023年第3期106-112,共7页Experimental Technology and Management

基　　金：中国矿业大学(北京)深部岩土力学与地下工程国家重点实验室开放基金课题(SKLGDUEK1923);国家重点研发计划项目(2018YFC0808301);中央高校基本科研业务费专项资金项目(2022YJSNY17)。

摘　　要：提出一种自主设计的多功能模型箱,基于该模型箱可设计多种排土场相似模拟实验,以在降雨作用和不同位置抗滑槽作用下排土场相似模拟实验为例。分别探究了在3 d降雨及7 d降雨作用下(降雨强度分别为217.1 mm和279.6 mm)排土场浸润线的变化规律和在坡脚、坡面下方、坡顶下方处留设抗滑槽对排土场破坏模式的影响。为验证实验结果是否准确,分别使用有限元软件COMSOL和有限差分软件FLAC^(3d)运用强度折减法对降雨条件和不同位置抗滑槽下的排土台阶进行数值模拟分析,将相似模拟实验结果和数值模拟结果进行对比论证,结果基本一致,验证了两种实验方案的合理性和可靠性,说明了基于该模型箱设计的相似模拟实验可靠。A self-designed multi-functional model box is proposed,based on the model box,a variety of similarity simulation experiments of dump can be designed.Taking the similarity simulation experiments of dumps under the effect of rainfall and anti-slide grooves at different positions as examples,the researches are conducted respectively.The change rule of the wetting line of the dumps under the effect of three days of rainfall and seven days of rainfall(the rainfall intensity is 217.1 mm and 279.6 mm,respectively)and the influence of anti-slides at the slope toe,under the slope surface and under the slope top on the failure mode of dumps are obtained.In order to verify the accuracy of the experimental results,the finite element software COMSOL and the finite difference software FLAC^(3d) are used to carry out numerical simulation analysis on the dumping benches under rainfall conditions and different locations of anti-slide groove based on the strength reduction method respectively.Compare and demonstrate the results of similarity simulation experiments and numerical simulations,the experimental results are basically consistent with the numerical simulation results,which verifies the rationality and reliability of the two experimental schemes and shows that the similarity simulation experiment designed based on the model box is reliable.

关 键 词：相似模拟 模型箱 排土场 降雨作用 抗滑槽 

分 类 号：TD824[矿业工程—煤矿开采]