CAJ | 학술논문

　　为了研究岩体局部化现象，基于轴向压杆稳定实例，运用数理和力学知识，根据Drucker-Prager（简称D-P）准则，推导了基于分叉理论的通用表达式。在此基础上，结合有限差分理论得出FLAC3D计算中岩体内发生分叉的判定条件，之后在自带的FISH编译语言的辅助下，在FLAC3D中建立数值分析模型，采用D-P本构关系，研究了岩体局部化现象及其发展过程。研究结果表明：在FLAC3D中以20000步为间隔所得的不平衡力比率模型系统逐渐趋于稳定，不平衡力比率逐渐降低，局部化现象的规模逐渐扩大至稳定，清晰度逐渐增加，证实了分叉理论能够有效地分析研究岩体局部化现象。给出的岩体局部分叉判定条件和数值验证，较为科学合理地阐述了常用分叉判定条件的由来，为解释岩体局部化现象的机制和过程提供了理论支撑，从而对岩体局部化现象研究起到了一定的推进作用。
　　위료연구암체국부화현상，기우축향압간은정실례，운용수리화역학지식，근거Drucker-Prager（간칭D-P）준칙，추도료기우분차이론적통용표체식。재차기출상，결합유한차분이론득출FLAC3D계산중암체내발생분차적판정조건，지후재자대적FISH편역어언적보조하，재FLAC3D중건립수치분석모형，채용D-P본구관계，연구료암체국부화현상급기발전과정。연구결과표명：재FLAC3D중이20000보위간격소득적불평형력비솔모형계통축점추우은정，불평형력비솔축점강저，국부화현상적규모축점확대지은정，청석도축점증가，증실료분차이론능구유효지분석연구암체국부화현상。급출적암체국부분차판정조건화수치험증，교위과학합리지천술료상용분차판정조건적유래，위해석암체국부화현상적궤제화과정제공료이론지탱，종이대암체국부화현상연구기도료일정적추진작용。
In order to study the rock localization phenomenon, based on the examples of the stability of axial pressure bar, applied the mathematical and mechanical knowledge, according to Drucker-Prager criterion, a universal formula can be derived based on the bifurcation theory. On this basis, combined with the finite difference theory, the judging criterion of bifurcation in rock mass in FLAC3D calculation can be worked out. Then under the assistant of own FISH compile language, using the Drucker-Prager criterion, a numerical analysis model is established in FLAC3D to study the rock localization phenomenon and its development process. The results show that in FLAC3D the imbalance force ratio model system came from the 20 000 steps interval gradually tends to be stable, the unbalanced force ratio gradually reduces; the localization phenomenon gradually expands the scale to its stability; and the clarity increases gradually, which confirms that the bifurcation theory can effectively analyze the rock localization phenomenon. The rock bifurcation criteria of rock localization phenomenon and numerical verification given by this paper more scientifically and reasonably expound the origin of the universal bifurcation condition, so as to provide the theoretical support for the explanation of the mechanism and process of the rock localization phenomenon to play a promoting role.