6.1 Test conditions

6.1.1 The test should be performed in adit where rocks arerelatively hard and intact.6.1.2 The length of test adit shall not be less than 10 m, andsufficient counterforce shall be ensured based on pressure load. Thesectional size of test adit shall facili ......（本文共 287 字 ）     [阅读本文]>>