摘要
地质力学磁力模型试验能够模拟实际工程中的复杂情况,从而确定现场中难以确定的问题。而磁性岩土相似材料与原型材料的力学性能参数是否相似,是地质力学磁力模型试验是否可靠的重要因素,为了保证模型试验结果的可靠性,需要对磁性岩土相似材料进行试验研究。由于岩土中岩体与结构面力学性能相差很大,将岩土相似材料分为岩体相似材料与结构面相似材料分别研究,选取铁粉、石英砂、粘土为岩体磁性相似材料,选取铁粉、重晶石粉、石膏为结构面相似材料。测量相似材料的密度、抗压强度、弹性模量、粘聚力、内摩擦角、泊松比等力学性能参数,研究材料含量与物理力学性能变化之间的规律,为地质力学磁力模型试验提供指导。
The magnetic model test of the geo-mechanical can stimulate complex situation of real project,so as to determine the difficult problems in the field.Whether the magnetic mechanical parameters of geotechnical similar material and prototype materials are similar,it is an important factor in Geo-mechanical Model Test of magnetic.In order to ensure the reliability of model test results,it is highly needed to study magnetic geotechnical similar material.As to the big difference of rock and structural plane,we studied the rock magnetic similar material and the structural plane magnetic similar material separately.Choosing iron powder,quartz sand and clay as the structural plane magnetic similar material and iron powder,barite powder,and gypsum as the rock magnetic similar material,the density,compressive strength,elastic modulus,cohesion,internal friction angle and poisson ratio were measured.We studied effect of different proportions of magnetic similar materials on the physical and mechanical properties,so as to give guidance to the geomechanics model test.
作者
阮博
罗先启
Ruan Bo;Luo Xianqi(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,P.R.China)
出处
《地下空间与工程学报》
CSCD
北大核心
2019年第1期45-51,共7页
Chinese Journal of Underground Space and Engineering
基金
国家重点基础研究发展计划(973)(2011CB013505)
国家自然科学基金(51279100)
关键词
地质力学磁力模型试验
磁性相似材料
物理力学性能试验
Geo-mechnical Model Test of magnetic
magnetic similar material
physico-mechanical property experiments
