含杂质盐岩典型蠕变模型的参数识别与对比分析  

Parameters identification and comparative analysis of typical creep models of impurity salt rock

作　　者：易海洋 路乐乐 曹伟[4] 武志德[3] YI Haiyang;LU Lele;CAO Wei;WU Zhide(North China Institute of Science and Technology,Yanjiao,065201,China;China University of Mining and Technology,Beijing,100083,China;Research Institute of Petroleum Exploration and Development-Langfang,Langfang,065007,China)

机构地区：[1]华北科技学院建筑工程学院,北京东燕郊065201 [2]中国矿业大学(北京),北京100083 [3]中国石油勘探开发研究院廊坊分院,河北廊坊065007 [4]华北科技学院,北京东燕郊065201

出　　处：《华北科技学院学报》2020年第2期77-81,共5页Journal of North China Institute of Science and Technology

基　　金：廊坊市科技支撑计划资助项目(2019013091);中央高校基本科研业务费资助项目(3142019019);河北省高等学校科学技术研究项目(QN2019320)。

摘　　要：通过分级加载蠕变试验,测定了两组成分相近、杂质随机分布的盐岩蠕变数据。基于一组试验数据,对目前常用的几种盐岩蠕变模型,Bailey-Norton模型、伯格斯(Burgers)模型、西原模型和分数阶蠕变模型蠕变模型参数进行参数识别,并采用识别的参数计算另一组的蠕变变形,对比分析各个模型在描述含杂质岩盐蠕变变形方面的适用性。结果表明:分数阶蠕变能较好地刻画盐岩蠕变损伤引起的力学性能变化。本文给出的典型盐岩蠕变模型参数和模型对比分析结果,含杂质盐岩蠕变研究中,模型选用和参数识别具有一定的指导意义。The creep data of two salt rocks with similar composition and random distribution of impurities were determined by graded loading creep test.Based on a set of test data,the current commonly used several kinds of salt rock creep model,Bailey-Norton,Burgers model,Nishihara model and fractional order creep model is used to identify the parameters creep model parameters,and the identified parameter is used to calculate the creep deformation of another group,the applicability of the various models in describing the creep deformation of impurity salt rock is analyzed in comparison.The results show that the fractional order creep model can well describe the change of mechanical properties caused by the creep deformation of salt rock.The determined parameters and comparative results of the present paper have significance in guiding the model selection and parameters identification of further study on the creep performance of salt rock.

关 键 词：多杂质盐岩 蠕变模型 参数识别 

分 类 号：TU452[建筑科学—岩土工程]