Microscopic cracking evolution process test equipment for bifacial shearing of coal petrography

The invention discloses microscopic cracking evolution process test equipment for bifacial shearing of coal petrography. The test equipment comprises a body, wherein the body is provided with a test piece cavity which is internally provided with a support; the top wall of the body is of a split structure and comprises a left top wall and a right top wall which are symmetrical in structure and are arranged at an interval to form a pressure head installation port; the front and rear ends of the body are provided with openings; a groove is formed in the part, which is over against the pressure head installation port, of the support; the left side wall of the body is provided with a guide hole; the front and rear parts of the left top wall are symmetrically provided with a first fastening bolt hole and a second fastening bolt hole which are communicated with each other; and the right top wall is provided with a third fastening bolt hole and a fourth fastening bolt hole which are symmetrical with the first fastening bolt hole and the second fastening bolt hole. The test equipment provided by the invention has the characteristics of wide adaptability, simple structure, low processing cost, high reliability, convenience in operation and the like.