Clay River Sand And Cement As The Mechanical Properties Of Soft Rock Similar Material Experiment Research

Deep underground rock engineering institutions complex diverse,the deformation of the rock and the rheological phenomenon is more prominent,so when we are in the mining of underground energy and underground engineering work,we will have a lot of difficulties,so we need to study of underground rock,but the test is very difficult to complete,therefore,to use similar material to convenient,efficient,accurate reflect the experiment method of the mechanical properties of soft rock,has been widely applied,in the practical engineering application of also has a high research value.In this paper,the mechanical properties of clay,river sand and cement as soft rock similar materials are studied.The main contents of this article are as follows:Is obtained by a lot of damage of uniaxial compression test,know the eight kinds of stress strain diagram replace rate roughly coincide with the four stages of stress strain curve,also see from the figure,following the increase of clay of cement replacement ratio,the stress of the soft rock specimens are also gradually reduced.This article also on the specimen of the four triaxial compression failure test,to make them the stress and strain of each image,total by triaxial compression failure stress strain diagram we can know that with the increase of clay of cement replacement ratio,soft rock similar material compression fracture resistance is becoming more and more low,performance on the stress and strain of the image,can be found that the stress is becoming more and more small,we can also in the general triaxial damage found on the stress and strain of image,with the improvement of clay of cement replacement ratio,soft rock specimen strain is smaller and smaller.Uniaxial creep is graded loading ways,from uniaxial creep test of creep curve,we can conclude the same replacement ratio of the specimen,the greater the stress,strain and steady state creep rate is higher;In the case of the same stress,the strain and steady-state rate of the specimen with higher replacement rate are higher.This article also made the triaxial creep test,do the confining pressure is 1 mpa and 0 mpa grading loading triaxial creep test,can be concluded that: the specimens of the same,when the confining pressure,the greater the strain of the specimens and steady-state creep rate is higher also.We through uniaxial creep and fitting of triaxial creep test and simulation test can finally know the general is the top of the roadway and the tunnel of the lower left corner of the deformation is large,the stress is big,so we are in an underground engineering,must focus on the situation of force and deformation of the two places.