Abstract：The fractures of rock mass in engineering are originated from the cracks located in it，and the solution to stress fields in multi-crack body is one of the most difficult problems in fracture mechanics. The cracks on main- controlled surface in rock mass damage are regarded as uniformly-spaced collinear cracks. When the reasonable equations on crack line are applied，the problems of collinear multi-crack loaded by shearing- compressive stresses are simplified as the issues of a crack in finite-dimension rock. The methodology to solve this problem is yielding criterion of rock mass material. An analytic solution near the crack line in an elastic-perfectly plastic rock mass is obtained，when the line field analysis method is applied. The influence of frictional strength on crack surface towards the shearing-compressive stresses is analyzed，which results from closure of crack surfaces on the stress fields. By proposing the reasonable equations on the crack line and the matching conditions of the elastoplastic stress fields at their boundaries，the relations between the length of plastic zone on the crack line and shearing-compressive stresses are obtained. Also，the failure criterion of the rock mass with collinear cracks along the main-controlled surface is yielded. The correctness of the analysis method is verified by the experimental results of a model test. The study serves as an important basis for the development of rock mass fracture mechanics.
王成. 裂纹线场分析方法在岩石力学中的应用[J]. 岩石力学与工程学报, 2010, 29(S1): 3254-3258.
WANG Cheng . APPLICATION OF ANALYTICAL METHOD OF CRACK LINE FIELDS TO ROCK MECHANICS. , 2010, 29(S1): 3254-3258.
