CAJ | 학술논문

逾渗现象广泛存在于大自然中，当物体中起决定性作用的关键变量变化至某一阈值时，其状态发生突变，此时关键变量的临界值称为逾渗阈值。岩石在水的作用下的损伤破坏过程中存在着逾渗现象，可通过重整化群的方法来研究。本文针对华南地区广泛分布的红层软岩，探讨了其在损伤过程中的逾渗现象与破坏的本质关联。通过对典型红层软岩的微观结构分析，概化出红层软岩的骨架构件和胶结物构件，建立红层软岩的重整化群模型的基本单元，将基本单元进行组合，建立出红层软岩的重整化群模型。根据重整化变换规则，推导计算出其逾渗阈值。研究表明：当红层软岩在荷载条件下的破坏临近逾渗阈值时，其内部结构发生大量破坏，软岩内部从无序损伤突变为有序损伤，继之损伤破坏加剧，由稳定破坏向非稳定破坏突变，最终导致其失稳破坏。研究对揭示红层软岩损伤破坏机理具有重要意义。
유삼현상엄범존재우대자연중，당물체중기결정성작용적관건변량변화지모일역치시，기상태발생돌변，차시관건변량적림계치칭위유삼역치。암석재수적작용하적손상파배과정중존재착유삼현상，가통과중정화군적방법래연구。본문침대화남지구엄범분포적홍층연암，탐토료기재손상과정중적유삼현상여파배적본질관련。통과대전형홍층연암적미관결구분석，개화출홍층연암적골가구건화효결물구건，건립홍층연암적중정화군모형적기본단원，장기본단원진행조합，건립출홍층연암적중정화군모형。근거중정화변환규칙，추도계산출기유삼역치。연구표명：당홍층연암재하재조건하적파배림근유삼역치시，기내부결구발생대량파배，연암내부종무서손상돌변위유서손상，계지손상파배가극，유은정파배향비은정파배돌변，최종도치기실은파배。연구대게시홍층연암손상파배궤리구유중요의의。
The percolation phenomena,which are that with some kind of critical factor changing,the original properties of the object will sudden change,widely exist in nature.And when the changing is happening,the value of the critical factor is the percolation threshold.The percolation phenomena also exist in the process of rock damaging and failure and the percolation threshold can be studied by renormalization group approach.Assumed that the failure of red-layer soft rock cased by the failure of cement in structure.And according to the microscopic structure of silty mudstone,one kind of red-layer soft rock,can build the renormalization group model of red-layer soft rock.In order to facilitate the calculation,the rules of renormalization transformation set simply.Then the percolation threshold of red-layer soft rock failure under loading condition can be calculated by the renormalization group approach.When the damage extent of red-layer soft rock failure under loading condition reached the percolation threshold,the inner structure will damage in large-scale and the strength will drop rapidly.The random damage of red-layer soft rock change into ordered damage,the velocity of damage becomes faster.