首页|三维声发射震源定位单纯形和网格搜索扫描联合方法研究

三维声发射震源定位单纯形和网格搜索扫描联合方法研究

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声发射震源定位是进行岩体破裂损伤成像的基础内容之一.为了提高声发射震源定位的效率和精度,本文提出三维声发射震源定位单纯形法和网格搜索扫描联合方法.基于单纯形的几何原理,首先进行四面体迭代缩小疑似震源区域的范围,其次对该区域进行网格划分和节点搜索扫描最优解,最后确定震源位置.采用人工激发震源定位试验和单轴压缩试验对该算法进行检验,其定位结果与单纯形法及全局扫描法进行对比,结果表明:本文提出的算法与单纯形定位方法相比较,定位结果更稳定,同时可以有效避免定位结果陷入局部极值;与全局扫描法相比较,该方法更高效,平均用时是全局扫描定位算法的10％-20％.该算法对实验室研究大尺寸岩体或试块的破裂损伤定位具有重要意义.
Study on Joint Method of 3D Acoustic Emission Source Localization Simplex and Grid Search Scanning
Acoustic emission(AE)source localization is a fundamental element of rock fracture damage imaging.To improve the efficiency and accuracy of AE source localization,this paper proposes a joint method comprising a three-dimensional(3D)AE source localization simplex method and grid search scanning.Using the concept of the geometry of simplexes,tetrahedral iterations were first conducted to narrow down the suspected source region.This is followed by a process of meshing the region and node searching to scan for optimal solutions,until the source location is determined.The resulting algorithm was tested using the artificial excitation source localization and uniaxial compression tests,after which the localization results were compared with the simplex and exhaustive methods.The results revealed that the localization obtained using the proposed method is more stable and can be effectively avoided compared with the simplex localization method.Furthermore,compared with the global scanning method,the proposed method is more efficient,with an average time of 10％-20％of the global scanning localization algorithm.Thus,the proposed algorithm is of great significance for laboratory research focused on locating rupture damages sustained by large-sized rock masses or test blocks.

acoustic emissionsimplex formgrid search scanlocating the epicenter

刘伟建、王浩楠、肖扬、侯梦杰、董森森、张志增、卢高明

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中原工学院建筑工程学院,河南,郑州,451100

安岩智能科技(常州)有限公司,江苏,常州,213000

盾构及掘进技术国家重点实验室,河南,郑州,450001

中铁隧道局集团有限公司,广东,广州,511458

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声发射 单纯形 网格搜索扫描 震源定位

Natural Science Foundation of Henan ProvinceChina Railway Science and Technology Innovation Program Funded ProjectScience and Technology Innovation Project funded by China Railway Tunnel Group

222300420596CZ02-Special-03Tunnel Research 2021-03

2024

10.1007/s11770-023-1042-y

应用地球物理(英文版)
中国地球物理学会

应用地球物理(英文版)

影响因子：1.01
ISSN：1672-7975
年,卷(期)：2024.21(3)
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