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尾矿管理横幅

尾矿管理

泰克's tailings facilities are operated and maintained to meet global best practices for safety. We continually review our facilities and procedures and are committed to maintaining the highest standard of safety at our operations.

概述

尾矿是采矿过程中常见的副产品。它们通常是在开采的矿石被粉碎、研磨和加工以分离有价值的矿物并产生可销售的精矿产品时产生的。这个过程产生的废物称为尾矿。由于矿石分离过程的性质,尾矿通常以细矿物颗粒和水的泥浆形式存在。尾矿的管理包括在一个专门设计的水库中储存,称为尾矿设施。

尾矿设施历来管理良好,很少发生事故;然而,也发生过事故,从这些事故中我们知道,尾矿事故有可能对社区、当地经济和周围环境产生重大影响。因此,我们在尾矿设施的规划、设计、施工、运营和退役期间采取了广泛的措施,以确认:

  • 结构稳定
  • 固体和水在指定/批准的区域内进行管理
  • 设施符合监管要求
  • Facilities conform to applicable standards, internal policies, industry best practices and the technical guidelines of the jurisdictions in which we operate

下载尾矿管理情况说明书


尾矿设施建设

Tailings facilities can follow a number of designs, based on factors including the composition of the tailings being stored, geotechnical considerations, precipitation, seismic activity, community preference, and environmental protection. Across Teck’s operations are examples of numerous types of tailings facilities, including facilities for storing dewatered “dry stack” tailings at our steelmaking coal operations and in-pit storage utilizing existing mined-out pits. The most common form of tailings impoundment at Teck and across the mining industry is created by constructing a dam (or dams) in conjunction with natural topography to create a tailings storage facility.

建造尾矿坝的主要方法有几种。我们每个尾矿设施的具体施工方法或方法组合是基于上述因素选择的,首要任务是社区、员工和环境的安全保障。在这些方法中,有三个基本几何图形,它们是由尾矿设施开发之初坝顶相对于原始“起始坝”的移动方式定义的。

上游
上游施工始于设施坡脚处修建的初期大坝。尾矿随后被排放到设施中,形成尾矿滩。这个尾矿海滩,可以压实/控制,然后用来形成基础的后续水平的墙,因为大坝是提高。因此,坝顶会随着每个高程向上游移动。

英国圣特兰
在中线施工中,大坝从起始坝垂直升起。因此,当大坝依次升高时,坝顶相对于上游和下游方向保持固定。不同于上游几何形状,坝墙不使用海滩尾矿进行基础支撑。


Downstream
下游设计从一个类似于其他两种施工方法的起始坝开始。尾矿随后被排放到大坝中,随着堤坝的抬高,每道新墙都被建造并支撑在上一段下游边坡的顶部,因此坝顶随着每道堤坝的抬高而向下游移动。与中心线施工一样,坝墙不依赖于滩尾渣作为墙支撑。


单级
单级大坝在一个阶段内建造至全高,不再加高。这种设计最常用于小型尾矿设施。


泰克的尾矿设施

泰克积极管理55个尾矿设施,遍布我们的现有和遗留矿区。在Teck管理的这些设施中,16个处于活动状态,39个处于关闭状态,不再接收材料。我们有一个活跃的上游尾矿设施和八个封闭的上游设施。16个是我们炼钢煤炭业务的不饱和/干烟囱设施,20个是复垦各个阶段遗留矿区的封闭设施。

We also have non-operated joint venture interests with tailings dams at Antamina in Peru and Fort Hills in Alberta.

许多场地包括多个尾矿设施,这些设施通常是活动和非活动设施的混合体。

Download a full list of the tailings facilities Teck manages, including information on construction type and location.

Highland tailings facility at Highland Valley Copper operation

Highland tailings facility at Highland Valley Copper operation

尾矿设施的安全管理

泰克运营和维护我们的尾矿设施,以满足全球最佳安全实践,包括加拿大矿业协会制定的行业领先协议以及加拿大大坝协会和国际大坝委员会的最佳实践技术指导。

Six Levels of Protection

1监控技术:万博手机版注册账号现场采用GPS集线器、压力计、倾斜仪、压力计、遥感和其他技术等监测系统来监测尾矿坝、桥台、自然边坡和水位。

2员工检查:Tailings dams are inspected by trained operators and expert technical staff as frequently as several times daily, with formal staff inspections at our operations at least once per month.

3. Annual Dam Safety Inspections:正式的大坝进行安全检查annually by an external Engineer of Record.Recent annual Dam Safety Inspections for our facilities are publicly available.

4详细的第三方审查:根据每个设施的后果分类,由合格的独立尾矿审查员每三年进行一次全面的第三方大坝安全审查。

5. Internal Governance Reviews:泰克’s Tailings Working Group conducts internal management reviews of our tailings facilities as well as our major tailings projects on a regular basis.

6独立尾矿审查委员会:我们的运营、高后果遗留设施和主要开发项目都有尾矿审查委员会,由独立专家组成,他们至少每年定期开会,对设计、运营、监督和维护进行第三方审查。

应急准备

所有Teck设施都有详细的操作、维护和监督手册以及应急准备和响应计划,这些手册和计划都会定期审查和更新。我们还与当地社区和利益相关者一起审查应急响应计划,举行社区会议和应急演习,以完成这些计划,并讨论我们的尾矿管理方法。

对于所有后果严重的设施,进行正式的淹没研究,以确定在极不可能发生尾矿事故的情况下,任何可能受影响的社区和水体,以评估设计/缓解策略,并协助应急计划和响应。

泰克遵循加拿大大坝协会后果分类系统,该系统根据故障的潜在环境、安全和经济影响,从低到极端分配后果等级。这一排名并不反映故障的可能性,而是提供了一个工具,以协助设施设计和应急规划。

Transparency on Tailings

泰克致力于就尾矿设施的建设和管理向社区和其他利益相关者公开透明。每个尾矿设施最重要的信息之一是年度大坝安全检查(DSI)。第三方记录工程师每年对每个尾矿设施进行DSI。DSI是对设施和相关基础设施的详细检查,目的是确定可能影响结构安全性和可靠性的任何条件或变化,并在注意到任何值得注意的问题时提出建议。泰克跟踪建议,并与记录工程师合作,及时解决每个项目。

In most jurisdictions, DSIs are provided to the government on an annual basis but have not often been made publicly available. Following the Mount Polley tailings dam failure in 2014, the Government of British Columbia, Canada, made DSIs for mines in B.C. publicly available. We support this transparency and have built on this disclosure by making the尾矿设施的DSIin all jurisdictions publicly available.

泰克不向河流或海洋排放尾矿。

专注于持续改进

While we are confident in the safety and security of our tailings facilities, we are committed to continually reviewing our facilities and procedures to maintain the highest standard of safety at our operations. As such, following the tailings failure at Vale’s Feijão Mine in Brazil, we initiated a special review of our tailings facilities and procedures. This review will include external experts who will be independent to any aspect of the design or operation of any of our facilities.

我们还与许多地方、国家和国际组织合作,支持改进整个行业的尾矿和矿山废物管理,包括:

  • 国际采矿和金属理事会(ICMM):代表国际领先采矿和金属公司的全球行业协会。
  • 加拿大矿业协会(MAC):一个促进加拿大采矿和选矿工业发展的全国性协会。通过MAC,我们实施了“走向可持续采矿”(TSM)计划,这有助于提高行业绩效。
  • 加拿大’s Oil Sands Innovation Alliance (COSIA):一个油砂生产商联盟致力于通过合作行动和创新,加速改善加拿大油砂的环境绩效。
  • 不列颠哥伦比亚省专业工程师和地球科学家协会:作为一个成员公司,Tek是一个审评者,它为2016发布的大坝基础勘察的要求制定了指南。
  • Australian Research Council:In 2017, Teck became part of an initial three-year applied research program, along with four universities in Australia and several other mining companies, focused on finding more effective tools for predicting and avoiding tailings facility failures.
  • 加拿大水坝协会:作为该协会的成员,泰克的高级技术领导人为行业最佳实践指导提供了意见。

泰克Tailings Facility Inventory


Dam Safety Inspection Reports

Dam Safety Inspection Reports

Dam Safety Inspections (DSIs) are one of the measures in place for the safe management of our tailings facilities. DSIs are conducted annually by a third-party Engineer of Record for mine tailings facilities in order to to review the safe operation, maintenance and surveillance of the facility and to identify and make any recommendations.

通过操作遵循Teck尾矿设施DSI的链接。

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尾矿信息请求

应政府的要求投资者采矿和尾矿安全倡议, chaired by theChurch of England and Swedish Council on Ethicsfor the AP Funds, Teck has provided specific details and information regarding our tailings facilities and our approach to tailings management. We are committed to working with stakeholders and being open and transparent on this important issue.


泰克

泰克是一家多元化资源公司,致力于负责任的采矿和矿产开发,主要业务部门专注于铜、炼钢、煤炭和锌,以及能源资产投资。