脆-塑性充填裂隙变形模量研究

Study on Deformation Modulus of Brittle-Plastic Filled Fracture

本文使用万能材料试验机,通过轴向压缩的方式,以不同配比的水泥砂浆、石膏、腻子作为充填介质,研究了不同配比和不同材料的非全充填裂隙的变形模量。试验结果表明,变形模量随应力的增大而增大;以水泥砂浆为充填介质的试验中,初始时水泥砂浆配比为1∶7的充填裂隙的变形模量最大,1∶5的次之,1∶3的最小,之后三者逐渐接近;以石膏和腻子为充填介质的试验中,初始时以石膏为充填物的充填裂隙变形模量较大,随后两者变形模量大小逐渐接近。

This paper used a universal material testing machine to study the deformation modulus of the non-full filled fractures of different ratios and different materials by means of axial compression,with cement mortar,gypsum,and putty of different ratios as filling media.The test results showed that the deformation modulus increased with the increase of stress;in the experiment with cement mortar as the filling medium,the initial deformation modulus of the filling fracture with the cement mortar ratio of 1∶7 was the largest,followed by 1∶5,and the smallest of 1∶3,and then the three gradually approached;in the test with gypsum and putty as the filling medium,the deformation modulus of the filling fracture with gypsum as the filling material was relatively large at the beginning,and then the deformation modulus of the two gradually approached.