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首页> 外文会议>Annual national meeting American Society for Surface Mining and Reclamation >PLAN FOR INJECTION OF COAL COMBUSTION BYPRODUCTS INTO THE OMEGA MINE FOR THE REDUCTION OF ACID MINE DRAINAGE
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PLAN FOR INJECTION OF COAL COMBUSTION BYPRODUCTS INTO THE OMEGA MINE FOR THE REDUCTION OF ACID MINE DRAINAGE

机译：将煤燃烧副产物注入奥美茄排水中的计划

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摘要

The Omega Mine Complex is located outside of Morgantown, West Virginia. The mine is in the Upper Freeport Coal, an acid-producing coal seam. The coal was mined in a manner that has resulted in acid mine drainage (AMD) discharges at multiple points. During the 1990's, the West Virginia Division of Environmental Protection (WVDEP) assumed responsibility for operating a collection and treatment system for the AMD. Collection and treatment costs are approximately $300,000 per year. An innovative procedure of injecting grout into the mine workings to reduce AMD and the resulting treatment costs is proposed. The procedure involves injecting grout mixes composed primarily of coal combustion byproducts (CCB's) and water, with a small quantity of cement. The intention of the injection program is to fill the mine voids in the north lobe of the Omega Mine (an area where most of the acidity is believed to be generated) with the grout, thus reducing the contact of air and water with potentially acidic material. The grout mix design consists of an approximate 1:1 ratio of fly ash to byproducts from fluidized bed combustion. Approximately 100 gallons of water per cubic yard of grout is used to help achieve flowability. Observation of the mine workings via subsurface borings and downhole video camera operation confirmed that first-mined areas were generally open while second-mined areas were generally partially collapsed. The injection program was developed to account for this by utilizing closer injection hole spacing in second-mined areas. The construction documents have been prepared, and the project is expected to be bid in 1997. The engineer's cost estimate is approximately $2,500,000. Administration of a construction contract for the project is ongoing through WVDEP's Abandoned Mine Lands (AML) program. Funding for the project is coming from the WVDEP; Allegheny Power; Consol, Inc.; United States Office of Surface Mining Reclamation and Enforcement (OSMRE); Anker Energy Corporation; and the Electric Power Research Institute.
机译：Omega矿山综合体位于西弗吉尼亚州摩根敦境外。该矿井是煤层上部自由港煤层。以酸性矿态引流（AMD）排出在多个点的方式中挖掘煤。在1990年代，西弗吉尼亚州的环保（WVDEP）司承担责任为AMD运营收集和治疗系统。收集和治疗费用每年约为300,000美元。提出了一种将灌浆注入矿井工作以减少AMD的创新程序和所产生的治疗成本。该程序涉及注射主要由煤燃烧副产品（CCB）和水的灌浆混合物，少量水泥。注射计划的目的是将矿井空隙填充在欧米茄矿井的北叶中（其中大部分酸度被产生的区域）与灌浆，从而减少了空气和水与潜在的酸性材料的接触。灌浆混合设计由粉煤灰的近似1：1与流化床燃烧的副产物组成。每间立方围场灌浆约100加仑的水用于帮助实现流动性。通过地下钻孔和井下摄像机操作观察矿井工作确认，第一开采区域通常是开放的，而第二次开采区域通常会塌陷。通过利用二次开采区域中利用更紧密的注射孔间距来实现注射程序以解释这一点。建筑文件已准备好，预计该项目将于1997年出价。工程师的成本估计约为2,500,000美元。通过WVDEP被遗弃的矿山土地（AML）计划来管理该项目的施工合同。该项目的资金来自WVDEP; Allegheny Power; CONSOL，INC;美国表面挖掘办公室垦区和执法（Osmre）; Anker Energy Corporation;和电力研究所。

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