MATLAB在复杂地质区域地应力反演中的应用

发布时间：2019-05-21 23:59

【摘要】：地应力场反演工作是深部矿井安全有序、高效生产的重要基础工作之一。为了提升复杂地质区域地应力场的建模和反演速度,利用MATLAB特性将其"胶水式"地应用于地应力场反演过程,减少手动干预的影响,主要开展了以下工作:(1)利用MATLAB编制了模型搜索程序,快速找寻到与工程现场实测测点对应的数值模型中ZONE单元编号及位置;(2)根据主应力、正-剪应力的相互关系,编写了基于MATLAB的二者转换模块,实现了由主应力向正-剪应力的快速变换;(3)利用MATLAB中的regress模块,建立了地应力反演的多元线性回归模型,求解得到的判定系数达到88.26%(1为最大),从而实现了对初始地应力场的重构,为矿井后期的开采设计、安全分析提供依据。结果表明,MATLAB的应用使整个反演与重构过程实现了无缝衔接,大大减少了人工工作量,杜绝了大量数据人工处理带来的误差,提高了工作效率。
[Abstract]:Inversion of geostress field is one of the important basic work of safe and orderly and efficient production in deep mines. In order to improve the modeling and inversion speed of geostress field in complex geological area, the "glue" ground is applied to the inversion process of geostress field by using MATLAB characteristics, so as to reduce the influence of manual intervention. The main work is as follows: (1) the model search program is compiled by MATLAB to quickly find the number and position of ZONE element in the numerical model corresponding to the measured points in the engineering site; (2) according to the relationship between principal stress and normal shear stress, the conversion module based on MATLAB is compiled, and the fast transformation from principal stress to positive shear stress is realized. (3) using the regress module in MATLAB, the multivariate linear regression model of geostress inversion is established, and the decision coefficient is 88.26% (1 is the maximum), thus the reconstruction of the initial geostress field is realized. It provides the basis for the mining design and safety analysis in the later stage of the mine. The results show that the application of MATLAB makes the whole inversion and reconstruction process seamlessly connected, greatly reduces the manual workload, eliminates a large number of errors caused by manual data processing, and improves the working efficiency.
【作者单位】：华北科技学院安全工程学院;云南驰宏锌锗股份有限公司;山东能源郓城煤矿;
【基金】：国家自然科学基金(51604115,51504095) 中国博士后科学基金(2016T90037) 河北省自然科学基金(E2015508050) 河北省科技计划项目(16275512) 廊坊市科学技术研究与发展计划项目(2016013116)
【分类号】：TD311

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