The development of a cover for inclined acid-generating areas, such as the external face of dykes and the slope of waste rock piles, is undoubtedly one of the biggest technical reclamation challenges at several mine sites. The LaRonde mine site, owned and operated by Agnico Eagle Mines (Quebec, Canada) is currently engaged to identify an optimal reclamation scenario for the Dyke 1 of its acid-generating tailings storage facilities. One of the promising reclamation options for controlling water infiltration in the acid-generating waste rock on the Dyke 1 is the use of an inclined cover built with available mine waste materials. An instrumented inclined cell with an inclination angle of 18.3 degrees was built on a slope of this dyke to validate if low sulfide tailings and non potentially acid-generating waste rock can be used as cover material to reclaim the Dyke 1. The instrumented inclined cell was monitored for 3 years (2017 to 2019) using volumetric lysimeters, suction sensors, and volumetric water content sensors. The monitoring was done under natural climatic conditions and artificial wetting events. Under natural conditions, less than 1% (5 mm) of incident rainfall percolated in the volumetric lysimeters installed along the slope of the inclined cell. Under controlled conditions associated with artificial wetting events of 6.4 mm/h over a period of 12 h, net percolation values between 1 and 9% (4 to 60 mm) of the sum of incident precipitation were measured. The distance between the top of the cell and the Down Dip Limit (DDL) point was greater than the slope length of the cover under natural conditions and the DDL point moved from the bottom toward the top to reach values between 12 and 20 m from the top of the slope when the wetting events were applied on the cover. These results confirmed the suitability of mining materials as an inclined cover material to control water infiltration in reactive mine waste rocks.

毫无疑问，为倾斜的产酸地区（如堤坝的外表面和废石堆的坡度）开发覆盖层，无疑是几个矿场面临的最大的技术开垦挑战之一。由Agnico Eagle Mines（加拿大魁北克）拥有和运营的LaRonde矿场目前正致力于为其酸产生尾矿存储设施的Dyke 1确定最佳的填海方案。用于控制堤1上产酸废石中水渗透的有前途的填海方案之一是使用由可用的矿山废料建造的倾斜井盖。倾斜的倾斜仪器，倾斜角度为18。溶渗仪，吸力传感器和体积水含量传感器。监测是在自然气候条件和人工润湿事件下进行的。在自然条件下，沿着倾斜单元的坡度安装的体积测渗仪中只有不到1％（5 mm）的入射降雨渗入。在与人工润湿事件相关的受控条件下，在12小时内以6.4 mm / h的速度浸湿，测得的净渗滤值为入射降水总量的1％至9％（4至60 mm）。在自然条件下，像元顶部与下浸极限（DDL）点之间的距离大于盖的坡度长度，并且DDL点从底部朝顶部移动，达到距离底端12至20 m的值。将润湿事件应用到覆盖层上时的坡度顶部。