Basic internal friction angle measuring device in rock interface

The utility model provides a basic internal friction angle measuring device in rock interface, includes quick -witted case, takes operation panel one side of recess and quick -witted case articulated, the operation panel opposite side cooperatees with the climbing mechanism of quick -witted incasement, and pressing from both sides model one side with the rock specimen matched with that awaits measuring and being connected with recessed wall through the spring in the recess, the baffle sets up and cooperatees on the operation panel and with the rock specimen that awaits measuring, the bottom plate of operation panel is equipped with the strip reflector plate, and the top surface of operation panel is provided with the light source point with strip reflector plate matched with, and the baffle top is provided with photosensitive sheets, installs the scalable light source pole with light sense piece matched with on the operation panel. The utility model provides a basic internal friction angle measuring device in