Rock angle changing plate shear test fixture

Rock angle change test device

1. Introduction

Rock angle changing plate shear test fixturereference standardTB10115-2014Code for Rock Testing of Railway Engineering - The shear strength of rocks is the ability of rocks to resist shear stress failure,At present, there are many experimental methods for measuring the shear strength of rocks indoors,Direct shear tests such as single-sided and double-sided shearing, and variable angle plate method,Punching test and triaxial test, etc.

2、 Basic principle:

reference standardTB10115-2014Code for Rock Testing of Railway Engineering - The shear strength of rocks is the ability of rocks to resist shear stress failure,At present, there are many experimental methods for measuring the shear strength of rocks indoors,Direct shear tests such as single-sided and double-sided shearing, and variable angle plate method,Punching test and triaxial test, etc. The variable angle plate method uses a press to apply vertical loads,By using a specially designed fixture, the specimen is subjected to shear failure along a certain shear plane,Then analyze the normal compressive stress and shear stress on the shear plane through static equilibrium conditions,Thus, draw the relationship curve between normal compressive stress (σ) and shear stress (τ),Determine the cohesive force of rocks（c）And the internal friction angle (φ).

3、 Equipment technical parameters:

1. Sample preparation equipment: Diamond machine,Stone cutting machine,Grinding machine;
2. Press: Technical requirements are the same as Test 5;
3. A set of angle changing plate cutting fixtures, required to be in45°-70Within the range of degrees, there are4-5An angle is available for adjustment

4The accuracy of the caliper is0.002cm.

Rock angle changing plate shear test fixturereference standardTB10115-2014Code for Rock Testing of Railway Engineering - The shear strength of rocks is the ability of rocks to resist shear stress failure,At present, there are many experimental methods for measuring the shear strength of rocks indoors,Direct shear tests such as single-sided and double-sided shearing, and variable angle plate method,Punching test and triaxial test, etc.

2、 Basic principle:

reference standardTB10115-2014Code for Rock Testing of Railway Engineering - The shear strength of rocks is the ability of rocks to resist shear stress failure,At present, there are many experimental methods for measuring the shear strength of rocks indoors,Direct shear tests such as single-sided and double-sided shearing, and variable angle plate method,Punching test and triaxial test, etc.