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首页> 外文会议>39th annual conference and expo of the International Erosion Control Association 2008 : Environmental connection 2008: Drive your future >Challenging Restoration Project of the Columbia Riverbank and Hillside at Teck Cominco Metals Smelter in Trail, British Columbia, Canada
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Challenging Restoration Project of the Columbia Riverbank and Hillside at Teck Cominco Metals Smelter in Trail, British Columbia, Canada

机译：在加拿大不列颠哥伦比亚省的Teck Cominco金属冶炼厂的哥伦比亚河岸和山坡上具有挑战性的修复项目

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Teck Cominco Metals Ltd. has operated a lead-zinc smelter in Trail since the late 1800's. A number of attempts to re-vegetate the riverbank have been made; however, these have been met with poor to, at best, moderate success. The hillside below the smelter was divided into four treatment units, and the adjacent riverbank into five treatment sections. Live cuttings used in the soil bioengineering structures were collected locally within the project area near Trail, British Columbia.rnIn the spring and fall of 2006 soil bioengineering structures were installed along the Columbia River. These consisted of brush layers with protective layers and live cutting pockets in rip-rap, as well as brush sills and fascines within a gravel bank. The cuttings that were used consisted of a mixture of Willow, Black Cottonwood, Red-Osier Dogwood, and a small amount of Pacific Willow. Planting was machine-assisted using excavators. During the summer of 2006, survival and growth of the spring-planted structures was assessed as good to excellent.rnInstallation of soil bioengineering structures on two of the hillside units commenced in the fall of 2006, with the exception of two small areas with a slope gradient less than 40% (22~0) that were planted during the spring using an excavator. On slopes gradient greater than 40% (22~0), which is the majority of the hillside, machine-assisted planting was done in the fall using a Schaeff Walking Excavator (Spyder Hoe). On slopes gradient greater than 60% (31~0) the excavator was tethered to a skidder located at the top of the slope. Materials were transported onto the slope using an overhead cable system.rnThe soil bioengineering structures consisted of brush layers using a species mixture of black cottonwood and willow. In combination with the brush layers, a custom soil amendment was utilized to increase soil fertility, retain moisture and regulate pH. Straw wattles were also installed across the slope, designed to act as sediment traps, shortening the slope length to reduce risk of surface erosion leading to rill formation. Survival and growth of the spring and fall-planted areas was generally good, although in areas survival was poor due to soil factors (high salts/contamination). The hillside units were also planted with container type native shrubs and conifer trees. The following spring of 2007 the second and third units were completed and hydro-seeded with native grasses using pulp mill bio solids as mulch. Irrigation system was installed and application of compost tea was carried out in the fall of 2007.
机译：Teck Cominco Metals Ltd.自1800年代末以来一直在Trail运营铅锌冶炼厂。已经进行了许多重新植被河岸的尝试；但是，这些方法取得的成功至多还是很差。冶炼厂下方的山坡分为四个处理单元，相邻的河岸分为五个处理段。在不列颠哥伦比亚省特雷尔附近的项目区域内，本地收集了用于土壤生物工程结构的活物。在2006年春季和秋季，沿着哥伦比亚河安装了土壤生物工程结构。其中包括带有保护层的刷子层和翻录中的活动切割口袋，以及砾石堆中的刷子基台和fascines。使用的插条由柳树，黑杨木，红，山茱Dog和少量太平洋柳树的混合物组成。种植是使用挖掘机机械辅助的。在2006年夏季，对春季种植结构的存活和生长进行了评估，结果达到了极好。rn2006年秋季，在两个山坡单元上开始安装土壤生物工程结构，但两个小坡度地区除外在春季使用挖掘机种植的坡度小于40％（22〜0）。在坡度大于40％（22〜0）的坡度（占山坡的大部分）上，秋天使用Schaeff步行挖掘机（Spyder Hoe）进行了机械辅助种植。在坡度大于60％（31-0）的坡度上，将挖掘机拴在坡度顶部的集材机上。使用架空电缆系统将材料运输到斜坡上。土壤生物工程结构由刷毛层组成，刷毛层使用黑杨木和柳树的混合物。结合刷层，使用定制的土壤改良剂来增加土壤肥力，保留水分和调节pH。整个斜坡上还安装了稻草篱笆，旨在充当泥沙收集器，缩短斜坡长度，以减少导致小溪形成的表面侵蚀风险。春季和秋季种植区的生存和生长总体良好，尽管由于土壤因素（盐分高/污染），该地区的生存期较差。山坡单元还种植了容器型原生灌木和针叶树。第二个和第三个单元于2007年春季完成，并使用纸浆厂生物固体作为覆盖物，用天然草进行了水力播种。安装了灌溉系统，并于2007年秋季进行了堆肥茶的施用。

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