中文摘要：

根据模型试验的相似原理,结合大冶铁矿露天转地下开采实际,运用正交实验设计的方法,通过大量配比试验及物理力学性质测试,研制出一种以铁矿粉、重晶石粉和石英砂为骨料,不饱和树脂和石膏为胶结材料的超高陡边坡与崩落法地下开采模型试验矿岩相似材料,并通过极差和方差分析研究该相似材料物理力学性质的影响因素及其敏感性。研究结果表明：相似材料中铁矿粉含量对相似材料密度、内摩擦角起主要控制作用,不饱和树脂含量对试件的抗压强度、弹性模量、黏聚力起主要控制作用;矿岩相似材料的密度为2.37～2.83 g/cm^3,弹性模量为11.423～127.935 MPa,抗压强度为0.091～0.884 MPa,黏聚力为2.30～12.01 kPa,内摩擦角为15.93°～38.59°,满足大冶铁矿超高陡边坡与崩落法地下开采模型试验对大理岩、闪长岩及铁矿体等矿岩体物理力学性质的相似比要求。

英文摘要：

Based on the similar principles of model test and the open pit to underground mining practice of Daye Iron Mine, a new kind of similar material of underground caving mining model test which consists of iron ore powder, barite powder, quartz sand, unsaturated resin, gypsum was developed through a lot of material mechanics test. Iron ore powder, barite powder and quartz sand were main materials, and the unsaturated resin and gypsum were cementing agent. The sensitivity of every factor was analyzed by using variance and range analysis method. The results show that the mass ratio of iron ore powder has control effect on density and internal friction angle, and the mass ratio of unsaturated resin has control effect on compressive strength, elastic modulus and cohesion. The density of similar material ranges from 2.37 to 2.83 g/cm^3; the elastic modulus ranges from 11.423 to 127.935 MPa; the compressive strength ranges from 0.091 to 0.884 MPa; the cohesion ranges from 2.30 to 12.01 kPa and the friction angle ranges from 15.93° to 38.59°; which can meet the needs of marble, diorite and iron ore for Daye Iron Mine＇s underground caving mining model test.