基于多源信息集成的地应力场分析研究  

IN-SITU STRESS FIELD ANALYSIS BASED ON MULTI-SOURCE INFORMATION INTEGRATION

作　　者：尹健民[1] 李永松[1,2] 陈建平[2] 艾凯[1] 毛宁[1] 

机构地区：[1]长江科学院水利部岩土力学与工程重点实验室,湖北武汉430010 [2]中国地质大学工程学院,湖北武汉430074

出　　处：《岩石力学与工程学报》2012年第A02期3950-3958,共9页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家重点基础研究发展计划(973)项目(2011CB710600);中央级公益性科研院所基本科研业务项目(CKSF2011020/YT);水利部公益性行业科研专项项目(201001009)

摘　　要：在对岩体应力场特征源数据挖掘和特征提取的基础上,结合多源信息集成技术,提出地应力场模拟的多源信息集成研究方法,该方法分为以下递进的3个部分组成:初次岩体应力场特征源数据信息集成→多源信息集成计算→二次集成即监测与反馈信息集成。进行多源信息集成计算时,结合均匀设计及模拟退火–粒子群(SA-PSO)混合优化算法。将该方法用于白鹤滩水电站工程区岩体应力场进行多源数据集成计算,计算结果与测试成果相符,且对勘测过程中的钻孔岩芯饼化现象及探洞开挖过程中出现的片帮现象与计算进行对比分析,从应力量值和方向量方面证明所提出的基于多源信息集成的地应力场分析研究方法是合理及可行的。Based on data mining and feature extracting of the source data of the in-situ stress field s characters,and combined with the technology of multi-source information integration,the analytical method of multi-source information integration for in-situ stress field is proposed.And the method is organized by three gradational steps： the first time of multi-source information integration for the source data of the in-situ stress field s characters→ calculation of multi-source information integration→the second time of integration,feedback information integration.The calculation of multi-source information integrationis is carried out combining with uniform design and hybrid algorithm of simulated annealing and particle swarm optimization.This method is applied to simulate the in-situ stress field of Baihetan hydropower station,and the calculated results are consentaneous with the testing results.Meanwhile,the rock-core disking phenomenon when drilling and spalling phenomenon in the testing tunnel during excavation is compared with calculated results.It is shown that the proposed analytical method of multi-source information integration for in-situ stress field from the two sides of stress s magnitude and azimuth,is reasonable and practicable.

关 键 词：地质力学 地应力 多源信息集成 数据挖掘 残差检验 

分 类 号：P55[天文地球—构造地质学]