Three Hinge Buckling Experimental Study
三铰链屈曲实验研究
基本信息
- 批准号:521165-2017
- 负责人:
- 金额:$ 1.8万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Engage Grants Program
- 财政年份:2017
- 资助国家:加拿大
- 起止时间:2017-01-01 至 2018-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In September 1989, a buckling ("pop-up") failure occurred at Woods Sand and Gravel Quarry in Kingston, ON.This resulted in flooding of the quarry and significant impact on the local groundwater conditions (e.g.neighbouring wells went dry). Buckling failures have commonly arisen in southern Ontario and themid-western U.S. and typically develop suddenly, with little warning, driven by high horizontal in situ stressesin the stiff, laminated, near-surface rock. As a result, the Ontario Ministry of Environment and Climate Change(OMECC) has requested quantifiable assessment of rock buffer thickness (the separation between quarry floorand underlying aquifer) for future quarry development on the basis of fundamental engineering principles andsite-specific conditions. Pop-up buckling, also referred to as three hinge buckling (THB), tends to occurviolently in laminated rock slabs where a central hinge and two abutment hinges are formed. Although manyauthors have made progress in the study of buckling behaviour in rock mechanics, several key issues remainunresolved. There is potential that this licensing requirement, or similar, will arise in other Canadian and U.S.jurisdictions. Given Dexter's stated objective of extending their business interests nationally andinternationally, obtaining a greater understanding of this challenging issue will help to both offset potentialrisks to existing quarry operations and future quarry development opportunities in other jurisdictions. In orderto proactively address this issue, Dexter is initiating a research project to better understand the mechanisms andrisk factors associated with three hinge buckling, and is engaging Dr. Corkum's lab to help conduct thenecessary background research. This proposed research program will involve a laboratory experimentalprogram, supported by numerical modelling (discontinuum), to investigate the THB buckling mechanism. Inaddition, field mapping to quantify geotechnical structural conditions for a quarry in Nova Scotia will beconducted to support translating the laboratory and numerical findings to actual field conditions. The resultswill have practical, directly applicable implications for Dexter, the Canadian mining industry, regulatory
1989年9月,安大略省金斯敦的伍兹沙和砾石采石场发生屈曲(“弹出”)故障,导致采石场水浸,并对当地地下水状况造成重大影响(例如邻近的水井干涸)。屈曲破坏通常发生在安大略省南部和美国中西部,通常是在坚硬的层状近地表岩石中高水平地应力的驱动下,在几乎没有预警的情况下突然发生的。因此,安大略省环境和气候变化部(OMECC)要求根据基本工程原则和场地具体条件,为未来的采石场开发对岩石缓冲厚度(采石场底板和地下含水层之间的分离)进行量化评估。弹出屈曲,也被称为三铰屈曲(THB),在层合岩板中往往会发生剧烈的屈曲,其中形成一个中心铰链和两个桥台铰链。虽然许多作者在岩石力学中的屈曲行为研究方面取得了进展,但仍有几个关键问题尚未解决。这一许可要求或类似要求可能会在加拿大和美国的其他司法管辖区出现。鉴于德克斯特声明的目标是在国内和国际上扩大业务利益,更深入地了解这一具有挑战性的问题将有助于抵消现有采石场运营面临的潜在风险,以及其他司法管辖区未来采石场的发展机遇。为了主动解决这个问题,Dexter正在启动一个研究项目,以更好地了解与三个铰链屈曲相关的机制和风险因素,并聘请Corkum博士的实验室帮助进行必要的背景研究。这项拟议的研究计划将包括一个由数值模拟(间断)支持的实验室实验计划,以研究THB的屈曲机理。此外,将进行实地测绘,以量化新斯科舍省一个采石场的岩土结构条件,以支持将实验室和数字结果转化为实际的现场条件。这一结果将对Dexter、加拿大采矿业、监管机构产生实际的、直接适用的影响
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Corkum, Andrew其他文献
Corkum, Andrew的其他文献
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{{ truncateString('Corkum, Andrew', 18)}}的其他基金
Fundamental Mechanism and Practical Implications of Residual Stress in Rock
岩石残余应力的基本机制及其实际意义
- 批准号:
RGPIN-2022-03367 - 财政年份:2022
- 资助金额:
$ 1.8万 - 项目类别:
Discovery Grants Program - Individual
Three Hinge Buckling Stability of Laminated Rock Masses
层状岩体三铰屈曲稳定性
- 批准号:
RGPIN-2015-06613 - 财政年份:2021
- 资助金额:
$ 1.8万 - 项目类别:
Discovery Grants Program - Individual
Three Hinge Buckling Stability of Laminated Rock Masses
层状岩体三铰屈曲稳定性
- 批准号:
RGPIN-2015-06613 - 财政年份:2020
- 资助金额:
$ 1.8万 - 项目类别:
Discovery Grants Program - Individual
Three Hinge Buckling Stability of Laminated Rock Masses
层状岩体三铰屈曲稳定性
- 批准号:
RGPIN-2015-06613 - 财政年份:2019
- 资助金额:
$ 1.8万 - 项目类别:
Discovery Grants Program - Individual
Three Hinge Buckling Stability of Laminated Rock Masses
层状岩体三铰屈曲稳定性
- 批准号:
RGPIN-2015-06613 - 财政年份:2018
- 资助金额:
$ 1.8万 - 项目类别:
Discovery Grants Program - Individual
Three Hinge Buckling Stability of Laminated Rock Masses
层状岩体三铰屈曲稳定性
- 批准号:
RGPIN-2015-06613 - 财政年份:2017
- 资助金额:
$ 1.8万 - 项目类别:
Discovery Grants Program - Individual
Three Hinge Buckling Stability of Laminated Rock Masses
层状岩体三铰屈曲稳定性
- 批准号:
RGPIN-2015-06613 - 财政年份:2016
- 资助金额:
$ 1.8万 - 项目类别:
Discovery Grants Program - Individual
Evaluation of Mine In Situ Stress using Modified Flat Jack Procedure
使用改进的平千斤顶程序评估矿井原地应力
- 批准号:
500423-2016 - 财政年份:2016
- 资助金额:
$ 1.8万 - 项目类别:
Engage Grants Program
Three Hinge Buckling Stability of Laminated Rock Masses
层状岩体三铰屈曲稳定性
- 批准号:
RGPIN-2015-06613 - 财政年份:2015
- 资助金额:
$ 1.8万 - 项目类别:
Discovery Grants Program - Individual
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