Tension-shear test device and test method for jointed columnar rock

The invention discloses a tension-shear test device and a tension-shear test method for jointed columnar rock. The tension-shear test device for the jointed columnar rock comprises a test structure, ahydraulic servo control system, a data collector, a computer host and a computer display; the test structure comprises a sample fixing unit, a tension generation unit, a supporting unit and a conversion unit; the sample fixing unit is used for fixing a rock mass sample, the tension generation unit is used for applying tension to the rock mass sample, the supporting unit provides a supporting effect for applying the tension, and the conversion unit is used for converting mechanical changes of the rock mass sample into data information; according to the test method, the test device is used forcarrying out the rock tension-shear test, the operation is simple, and the obtained test data can truly reflect the stress characteristics of the rock in the tension-shear process; and for obtaining amore accurate and perfect