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河水上涨与极限法土条间作用力的关系研究
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作者 彭坚 《黑龙江水利科技》 2022年第4期87-89,共3页
土质岸坡常是河水稳定或河水流量可控条件下的岸坡结构。采用Geo-studio软件对一实例岸坡进行建模分析,充分利用Geo-studio软件在水流水压力计算上的优势,探究河水水位上涨时,同一土条划分方式下,土质岸坡的各土条间的相互作用力的演化... 土质岸坡常是河水稳定或河水流量可控条件下的岸坡结构。采用Geo-studio软件对一实例岸坡进行建模分析,充分利用Geo-studio软件在水流水压力计算上的优势,探究河水水位上涨时,同一土条划分方式下,土质岸坡的各土条间的相互作用力的演化趋势,主要结论:随着河水水位上涨,土条重度增加,土条与土条间的正应力上升迅速,切应力变化相比之下较小。建议:在河流上、下游水闸处的工作人员,应时刻关注河中水位变化情况,应及时做好排水或疏导水工作。 展开更多
关键词 河坝边坡 水位面变化 极限平衡 安全系数
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Study on the change rule of groundwater level and its impacts on vegetation at arid mining area 被引量:3
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作者 雷少刚 卞正富 +1 位作者 张日晨 李林 《Journal of Coal Science & Engineering(China)》 2007年第2期179-182,共4页
The shallow groundwater in Shendong mining area was broken because of large-scale underground mining activities. Selecting 32201 working-face as research area, analyzed the change rule of groundwater level and aquifer... The shallow groundwater in Shendong mining area was broken because of large-scale underground mining activities. Selecting 32201 working-face as research area, analyzed the change rule of groundwater level and aquifer thickness under mining impact with a large number of water level observation data. Then, the impacts of groundwater level change on vegetation were analyzed by the relationship theory of arid area groundwater and vegetation. The results show that the aquifer structure and the water condition of supply flow and drainage are changed by the water proof mining. The groundwater level recovere only a little compared with the original groundwater level in two years. But the great change of groundwater level do not have notable influences on vegetation of this mining area, and further study indicates that there are certain conditions where groundwater level change impacted on vegetation. When the influence of groundwater level change was evaluated, the plant ecological water level, warning water level and spatial distribution character of original groundwater and mining-impacted groundwater-level change should be integrated. 展开更多
关键词 mining working-face groundwater level VEGETATION arid area
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