高强度相似材料配比试验研究  

Experimental Study on Ratio of High Strength Similar Materials

作　　者：杨洪增[1,2] 赵章 李玉宝[1,2] YANG Hongzeng;ZHAO Zhang;LI Yubao(Hebei Coal Research Institute,Xingtai 054000,China;National Key Laboratory of Energy Backfilling Mining Technology,Xingtai 054000,China;Wutongzhuang Mine,Jizhong Energy Fenfffeng Group Co.,Ltd.,Handan 056503,China)

机构地区：[1]河北煤炭科学研究院,河北邢台054000 [2]国家能源充填采煤技术重点实验室,河北邢台054000 [3]冀中能源峰峰集团有限公司梧桐庄矿,河北邯郸056503

出　　处：《煤矿安全》2018年第9期59-62,67,共5页Safety in Coal Mines

摘　　要：为配制出高强度的相似模拟材料,拟采用水泥和石膏作为胶结料。以沙胶比和水膏比为控制因素,每个因素设置3个不同的水平,同时设置1个检验组,每组制作3个试块,对30个试块进行试验。通过称重、压缩得到了不同配比试块的密度、单轴抗压强度等物理力学性能指标。研究结果表明,不同配比试块的密度约为1.73 g/cm^3,各组差别较小。但不同胶结料含量试块的单轴抗压强度差别较大,最低强度为0.45 MPa,最高达到2.6 MPa,覆盖范围广,基本可以满足大部分岩体材料模型试验对相似材料的要求。利用MATLAB软件对试验数据进行回归分析,得到了回归方程。利用回归方程得出的配比与检验组试块的配比吻合较好,能够用于相似材料配比的确定。Cement and gypsum are used as cementing materials to get the high strength similar material. The sand binder ratio and water paste ratio are chosen as control factors, and each factor is set at 3 different levels. Besides, a test group is set up at the same time. Three test blocks are produced in each group and 30 blocks are tested. By weighing and compressing, the density and uniaxial compressive strength of specimens with different proportions are obtained. The results show that the density difference of specimens with different ratios is small, about 1.73 g/cm-3, but the uniaxial compressive strength of the samples with different binder content varies greatly, the lowest strength is 0.45 MPa, the highest is 2.6 MPa, covering a wide range. The strength can meet the requirements of similar materials for most rock mass material model tests. MATLAB software is used for regression analysis of test data to obtain regression equation; the ratio obtained by regression equation is in good agreement with the ratio of test blocks, which can be used to determine the ratio of similar materials.

关 键 词：相似模拟 材料配比 沙胶比 矿山压力 单轴抗压强度 

分 类 号：TD315.3[矿业工程—矿井建设]