岩体爆破的损伤统计演化理论模型  

A THEORETICAL EVOLVING MODEL OF ROCK MASS BLASTING WITH STATISTICAL DAMAGE

作　　者：姚金阶[1] 朱以文[2] 袁子厚[3] 文尉 

机构地区：[1]三峡大学土木水电学院,湖北宜昌443002 [2]武汉大学土木建筑工程学院,湖北武汉430072 [3]武汉科技学院数理系,湖北武汉430073 [4]湖北宜昌岩松爆破公司,湖北宜昌443000

出　　处：《岩石力学与工程学报》2006年第6期1106-1110,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：湖北省教育厅重点项目(D200504);湖北省水电工程施工与管理重点实验室(三峡大学)项目(HEF200405);重庆交通学院结构工程实验室项目(20040005)

摘　　要：将实际爆破工程中的岩石爆破作为岩体工程的范畴,讨论岩体爆破的一般特点,并从岩体初始结构弱面的统计特性和爆破后的块度分布特征出发定义一种新的岩体损伤变量。将损伤变量与裂隙的分形维数相联系,构造一种岩体爆破统计损伤的演化理论模型。这种损伤量的定义满足完整岩石的损伤值为0,爆破以后岩体的损伤值为1。通过对该模型的初步计算分析表明,此模型具有清晰简明的特点和一定的实际应用价值。The practical blasting engineering is considered as rock mass engineering, and the general characteristics of rock mass blasting are discussed. There are various discontinuous joints and fissures in rock mass which have statistical characteristics, so the distribution parameter can be measured. The damage parameter is defined as the ratio of the area of fragmentation after blasting divided by the area of all sections. The definition meets the requirement that the damage of intact rock is 0 and is 1 after blasting. The rock fragmentation has fractal character and has relation between damage parameter and fractal dimension. So the evolvement equation can be established. The numerical calculation of the statistical damage model indicates that this model is clear in theory and applicable in practical engineering.

关 键 词：岩石力学 岩体爆破 损伤 演化模型 

分 类 号：TU457[建筑科学—岩土工程]