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南坪县位于四川西北高原与甘肃省交界的边远山区。县城建立在白水江右岸的阶地和后山(韩家山)水泉沟的洪积扇上,下侧有关庙沟,上侧有叭拉沟,三沟环抱,四面山高坡陡。这里地形复杂,地震频繁,岩层破碎,植被稀少,天气多变,降雨量集中,冲沟十分发育,水土流失严重,产生过多处滑坡,足泥石流易发区。南坪县城因泥石流的危害和威胁,曾两次搬迁。现在新建的县城距离水泉沟不到200米,也是处在泥石流灾害包围之中,人民的生命财产长期遭受着严重威胁和损失。
Nanping County is located in the remote mountainous area at the junction of Sichuan’s northwestern plateau and Gansu Province. The county seat is built on the terrace on the right bank of the Baishuijiang River and on the alluvial fan of Shuiquangou in the Hou Shan (Han Jiashan). The lower part is related to the Miaogou ditch and the upper part is covered with a bellows ditch and a ditch surrounded by three ditches. Here the terrain is complex, frequent earthquakes, rock crusts, scarce vegetation, changing weather, concentrated rainfall, gully development, serious soil erosion, resulting in too many landslides, enough debris flow prone areas. Nanping County due to debris hazards and threats, has been relocated twice. Now the newly built county is less than 200 meters away from Shuiquan ditch. It is also surrounded by mudslide hazards. People’s lives and property have suffered serious threats and losses in the long term.