Progressive failure analysis and fractures space model construction of overlying strata in shallow multi-seam overlapping mining

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2025-02-25 DOI:10.1016/j.engfailanal.2025.109462

Kai Wang , Xiang Zhang , Yiqiao Wang , Kangnan Li , Jiazhi Sun , Aitao Zhou , Feng Du , Yangyang Guo

{"title":"Progressive failure analysis and fractures space model construction of overlying strata in shallow multi-seam overlapping mining","authors":"Kai Wang , Xiang Zhang , Yiqiao Wang , Kangnan Li , Jiazhi Sun , Aitao Zhou , Feng Du , Yangyang Guo","doi":"10.1016/j.engfailanal.2025.109462","DOIUrl":null,"url":null,"abstract":"<div><div>The comprehension of the collapse law of overlying strata and the corresponding evolution of overburden fractures is the foundation for solving mine disasters related to rock mass dynamics and fluid flow in shallow multi-seam mining, and the correlation study is inadequate. In this work, a three-dimensional (3D) model of shallow multi-seam is developed based on discrete element method to simulate the whole process of overlapping mining. The overburden caving, fracture propagation and strata subsidence are investigated from a spatial perspective, and the evolution and distribution of highly fractured areas are assessed. Based on the stability and transformation characteristics of the collapsed overburden structure influenced by geological features and the disturbance of secondary mining, the propagation mechanism of overburden fractures is determined. Additionally, a calculation criteria of overburden collapse and fractures development height in shallow multi-seam mining with separation height as a single judgment factor is proposed. The spatial distribution models of overburden fractures in full mining stage of upper and lower coal seams are established singly, and regions are divided based on the degree of fracturing. Finally, the spatial models of overburden fractures is verified and supplemented by field investigations of morphology and distribution features of surface cracks.</div></div>","PeriodicalId":11677,"journal":{"name":"Engineering Failure Analysis","volume":"173 ","pages":"Article 109462"},"PeriodicalIF":4.4000,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Engineering Failure Analysis","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1350630725002031","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The comprehension of the collapse law of overlying strata and the corresponding evolution of overburden fractures is the foundation for solving mine disasters related to rock mass dynamics and fluid flow in shallow multi-seam mining, and the correlation study is inadequate. In this work, a three-dimensional (3D) model of shallow multi-seam is developed based on discrete element method to simulate the whole process of overlapping mining. The overburden caving, fracture propagation and strata subsidence are investigated from a spatial perspective, and the evolution and distribution of highly fractured areas are assessed. Based on the stability and transformation characteristics of the collapsed overburden structure influenced by geological features and the disturbance of secondary mining, the propagation mechanism of overburden fractures is determined. Additionally, a calculation criteria of overburden collapse and fractures development height in shallow multi-seam mining with separation height as a single judgment factor is proposed. The spatial distribution models of overburden fractures in full mining stage of upper and lower coal seams are established singly, and regions are divided based on the degree of fracturing. Finally, the spatial models of overburden fractures is verified and supplemented by field investigations of morphology and distribution features of surface cracks.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Engineering Failure Analysis 工程技术-材料科学：表征与测试

CiteScore

7.70

自引率

20.00%

发文量

956

审稿时长

47 days

期刊介绍： Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies. Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials. Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged. Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.