几种岩石强度准则的对比分析

›› 2011, Vol. 32 ›› Issue (S1): 209-216.

几种岩石强度准则的对比分析

石祥超，孟英峰，李皋

西南石油大学油气藏地质及开发工程国家重点实验室，成都 610500

收稿日期:2010-12-21 出版日期:2011-05-15 发布日期:2011-05-16
作者简介:石祥超，男，1981年生，博士，主要从事石油工程岩石力学及气体钻井提速机制方面的研究
基金资助:
国家高技术研究发展计划（863计划）项目气体钻井技术与装备（No. 2006AA06A103）；国家重大专项低渗气藏特殊复杂地层高效钻井关键技术（No. 2008ZX05022-005）

Comparative analyses of several rock strength criteria

SHI Xiang-chao, MENG Ying-feng, LI Gao

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China

Received:2010-12-21 Online:2011-05-15 Published:2011-05-16

摘要/Abstract

摘要： 采用常规三轴试验数据，以最小平均拟合差为评价指标定量地对比分析5种强度准则描述岩石非线性强度特征的适用性。结果表明：直线型Mohr-Coulomb准则不能描述岩石强度的非线性特征；抛物线型Mohr-Coulomb虽能描述岩石强度的非线性特征，但拟合误差较大，计算所得强度参数与事实不符，不宜使用；对于中低围压（）下岩石强度的非线性特征，单参数Bieniawski准则拟合精度与Hoek-Brown准则相当或稍好，拟合精度接近于指数强度准则，均优于双参数Bieniawski准则；在高围压下岩石强度非线性特征较为显著，应用单参数Bieniawski 准则或Hoek-Brown准则描述误差较大，三参数Bieniawski准则和指数强度准则拟合误差较小，可用于评价深部或特深部高应力状态下岩石的强度特征。

关键词: 岩石强度准则, 岩石非线性强度特征, 强度准则适用性, 最小平均标准拟合差

Abstract: Least mean standard fitting deviation is used as an evaluation index; we analyze the applicability of five conventional triaxial strength criteria to describe the nonlinear strength characteristics of rocks based on test data of ten rocks cited from public literatures. It is obvious that linear Mohr-Coulomb criterion can’t describe the nonlinear strength characteristics of rocks. Parabolic Mohr-Coulomb criterion can describe the nonlinearity feature of rock strength; but for the reason that the fitting error is very great and the parameters from calculation is not consistent with the real data; so it is not suitable to apply parabolic Mohr-Coulomb criterion in geotechnical engineering. For the nonlinear strength characteristics of rocks at low-to-moderate confining pressure level（）, the Bieniawski criterion with a single parameter and Hoek-Brown Criterion is better than Bieniawski Criterion with two parameters; their fitting accuracy is close to exponential strength criterion with three parameters; but they can’t be used at high confining level. When nonlinear strength characteristics are very significant under high confining pressure, the fitting deviations of Bieniawski criterion with three parameters and exponential strength criterion with three parameters are smaller; so they can be used to evaluate the strength under high geostress

Key words: strength criterion of rocks, nonlinear strength characteristics of rocks, applicability of strength criterion, least mean standard fitting deviation

中图分类号:

TU 452

石祥超，孟英峰，李皋. 几种岩石强度准则的对比分析[J]. , 2011, 32(S1): 209-216.

SHI Xiang-chao, MENG Ying-feng, LI Gao. Comparative analyses of several rock strength criteria[J]. , 2011, 32(S1): 209-216.

参考文献

null

相关文章 15

[1]	郭亮，胡卸文，李晓昭，巫锡勇，吴礼舟，李煜，罗刚，马洪生，. 花岗岩断裂带原状裂隙岩水力特性试验研究[J]. , 2018, 39(11): 3937-3948.
[2]	张希巍，王刚，蔡明，徐荃，. 凌海花岗岩变形特点与脆性评价[J]. , 2018, 39(10): 3515-3524.
[3]	陈松，乔春生，叶青，邓斌. 基于摩尔-库仑准则的断续节理岩体复合损伤本构模型[J]. , 2018, 39(10): 3612-3622.
[4]	李小飞，孙江涛，陈卫忠，袁敬强，刘金泉，张庆艳,. 纤维硅灰水泥石强度与浆液抗冲刷特性[J]. , 2018, 39(9): 3157-3163.
[5]	李术才，潘东东，许振浩，李利平，林鹏，袁永才，高成路，路为, . 承压型隐伏溶洞突水灾变演化过程模型试验[J]. , 2018, 39(9): 3164-3173.
[6]	李东奇，李宗利，吕从聪. 考虑裂隙附加水压的岩体断裂强度分析[J]. , 2018, 39(9): 3174-3180.
[7]	左宇军，孙文吉斌，邬忠虎，许云飞,. 渗透压–应力耦合作用下页岩渗透性试验[J]. , 2018, 39(9): 3253-3260.
[8]	王凤云，钱德玲. 基于切向应变软化的深埋圆形隧道围岩弹塑性分析[J]. , 2018, 39(9): 3313-3320.
[9]	傅晏，袁文，刘新荣，缪露莉，谢文博,. 酸性干湿循环作用下砂岩强度参数劣化规律[J]. , 2018, 39(9): 3331-3339.
[10]	刘泉声，彭星新，黄兴，雷广峰，魏莱，刘鹤,. 全断面隧道掘进机护盾受力监测及卡机预警[J]. , 2018, 39(9): 3406-3414.
[11]	郑安兴，罗先启，. 危岩水力劈裂分析的扩展有限元法[J]. , 2018, 39(9): 3461-3468.
[12]	吴永胜，谭忠盛，余贤斌，喻渝，朱勇,. 不同加载方位角下单轴压缩千枚岩扩容特性[J]. , 2018, 39(8): 2747-2754.
[13]	李帅，朱万成，牛雷雷，李如飞，李少华. 动态扰动对应力松弛岩石变形行为影响的试验研究[J]. , 2018, 39(8): 2795-2804.
[14]	王斐笠，王述红，修占国. 应力波扰动下结构面的应力量化及强度表征[J]. , 2018, 39(8): 2844-2850.
[15]	李杨，佘成学. 堆石料单粒强度尺寸效应的颗粒流模拟方法研究[J]. , 2018, 39(8): 2951-2959.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed