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Ecological restoration method for coal mine in permafrost region
The invention discloses an ecological restoration method for a coal mine in a permafrost region, ecological restoration is carried out by utilizing a block stone composite covering layer, the block stone composite covering layer comprises a vegetation layer, a substrate layer, a slag layer, a vegetation blanket and a block stone layer from top to bottom, and a closed convection heat exchange layer is formed on a mine area surface. In warm seasons, the upper portion of the block stone layer is high in air temperature, small in density and weak in convection effect, and the block stone layer plays a role of a heat insulation layer. In cold seasons, the upper portion of the block stone layer is low in temperature and high in density, and the convection effect occurs in the block stone layer. In addition, the thermal physical property of the covering layer has phase variability, the heat conductivity coefficient of the covering layer is small under the positive temperature condition, and the heat conductivity coefficient of the covering layer is large under the negative temperature condition. The problems of ecological restoration of the strip mine area in the permafrost region, protection of pit slope exposed frozen soil and restoration of hydrology and ecology of the strip mine area in the permafrost region are solved.
本发明公开了一种冻土区煤炭矿山生态修复方法，利用块石复合覆盖层进行生态修复，块石复合覆盖层由上至下分别为植被层、基质层、矿渣层、植被毯、块石层，在矿区面形成封闭的对流换热层。在暖季，块石层上部气温较高，密度较小，对流作用较弱，起到了隔热层的作用；在冷季，块石层上部气温较低，密度较大，内部发生对流效应。加之，覆盖层的热物理性能具有相变异性，在正温条件下，其导热系数较小，而在负温条件下，导热系数较大。以解决多年冻土区露天矿区的生态修复、矿坑边坡暴露冻土保护以及修复多年冻土区露天矿区水文生态。
Ecological restoration method for coal mine in permafrost region
The invention discloses an ecological restoration method for a coal mine in a permafrost region, ecological restoration is carried out by utilizing a block stone composite covering layer, the block stone composite covering layer comprises a vegetation layer, a substrate layer, a slag layer, a vegetation blanket and a block stone layer from top to bottom, and a closed convection heat exchange layer is formed on a mine area surface. In warm seasons, the upper portion of the block stone layer is high in air temperature, small in density and weak in convection effect, and the block stone layer plays a role of a heat insulation layer. In cold seasons, the upper portion of the block stone layer is low in temperature and high in density, and the convection effect occurs in the block stone layer. In addition, the thermal physical property of the covering layer has phase variability, the heat conductivity coefficient of the covering layer is small under the positive temperature condition, and the heat conductivity coefficient of the covering layer is large under the negative temperature condition. The problems of ecological restoration of the strip mine area in the permafrost region, protection of pit slope exposed frozen soil and restoration of hydrology and ecology of the strip mine area in the permafrost region are solved.
本发明公开了一种冻土区煤炭矿山生态修复方法，利用块石复合覆盖层进行生态修复，块石复合覆盖层由上至下分别为植被层、基质层、矿渣层、植被毯、块石层，在矿区面形成封闭的对流换热层。在暖季，块石层上部气温较高，密度较小，对流作用较弱，起到了隔热层的作用；在冷季，块石层上部气温较低，密度较大，内部发生对流效应。加之，覆盖层的热物理性能具有相变异性，在正温条件下，其导热系数较小，而在负温条件下，导热系数较大。以解决多年冻土区露天矿区的生态修复、矿坑边坡暴露冻土保护以及修复多年冻土区露天矿区水文生态。
Ecological restoration method for coal mine in permafrost region
一种冻土区煤炭矿山生态修复方法
YANG LINSHAN (author) / FENG QI (author) / GAO ZEYONG (author) / SHANG YUNHU (author) / ZHU MENG (author) / GUO XIAOYAN (author)
2024-09-27
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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