高锋;甘德清;郭君;甘泽;
GAO Feng;GAN De-qing;GUO Jun;GAN Ze;Deparmentof Mining Engineering, Shanxi Institute of Technology;College of Mining Engineering, North China University of Science and Technology;College of Civil Engineering, Tangshan University;

• 1:山西工程技术学院矿业工程系
• 2:华北理工大学矿业工程学院
• 3:唐山学院土木工程学院

摘要(Abstract)：

从岩石冲击破碎能量与破碎程度关系、岩石冲击破碎能量与尺寸效应和岩石破碎能量的计算模型等3个方面总结论述了岩石冲击破碎能量特征的研究进展，指出了当前研究存在的问题。结果表明：破碎产品平均粒度与细度越小、产品粒度分布越均匀，单位破碎能越大；岩石初始尺寸和形状显著影响岩石单位破碎能，岩石初始尺寸越大、形状越不规则，单位破碎能越小；岩石破碎能量计算模型可分为未考虑粒度分布和考虑粒度分布2种情况；岩石冲击破碎能量特征研究的方向为结合岩石物理力学性质，建立岩石单位破碎能与破碎程度参数的多指标关系模型，揭示初始尺寸和形状对单位破碎能的耦合影响规律，进而构建基于岩石力学参数、初始粒度与初始分布参数、破碎产品粒度与产品分布参数的破碎能量计算模型，实现岩石单位破碎能量的准确预算，为矿山改革破碎工艺实现节能增效提供可靠的理论基础。
The research progress on crushing energy characteristics of rock under impact were summarized and discussed from 3 aspects,the relationship between rock impact crushing energy and crushing degree, rock impact crushing energy and size effect, and the calculation model of rock crushing energythe relationship between the crushing energy of rock under impact and the degree of rock crushing, size effect on crushing energy of rock under impact and calculation model of crushing energy, and the problems existing in the current research were pointed out. The results show that the smaller the average particle size and fineness of the crushed product, the more uniform the particle size distribution of products, and the greater the unit crushing energy. The initial size and shape of the rock significantly affect the unit crushing energy of the rock, the larger the initial size and the more irregular the shape of the rock, the smaller the unit crushing energy. The calculation model of rock crushing energy can be divided into 2 cases: without considering particle size distribution and considering particle size distribution. The research direction of fragmentation energy characteristics of rock under impact provides a reliable theoretical basis for establishing a multi-index relationship model between rock unit crushing energy and crushing degree parameters based on the physical and mechanical properties of rocks, revealing the coupling effect of initial size and shape on unit crushing energy, building crushing energy calculation models based on rock mechanical parameters, initial particle size and initial distribution parameters, and crushed product particle size and product distribution parameters, realizing the accurate budget of rock unit crushing energy and realizing energy saving and efficiency improvement in mine reformation and crushing process.

关键词(KeyWords)： 岩石;破碎能量特征;冲击破碎;单位能量;能量模型;研究进展
rock;fragmentation energy characteristics;impact crushing;unit energy;energy model;research progress

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(52074124);; 河北省自然科学基金青年基金资助项目(E2020209160)

作者(Authors): 高锋;甘德清;郭君;甘泽;
GAO Feng;GAN De-qing;GUO Jun;GAN Ze;Deparmentof Mining Engineering, Shanxi Institute of Technology;College of Mining Engineering, North China University of Science and Technology;College of Civil Engineering, Tangshan University;

DOI: 10.19931/j.EB.20210079

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