【摘要】 黑方台1968年开始提灌灌溉,由于灌溉水的下渗,滑坡灾害越来越严重,到1990年左右达到高峰,1992年以后基本稳定,保持在年平均4次左右。文章通过黑方台滑坡区灌溉引起的土体理化性质的变化分析,探讨了由于灌溉引起滑坡的机理。通过分析该区滑坡灾害,得到黑方台滑坡年均产沙量为5.722×105m3,年均地下潜蚀量为1.552×106m3,共计产沙1.552×106m3,年均经济损失33.8万元的结论。更多还原

【Abstract】 The Heifang platform was irrigating since 1968. The very seriousness landslide harm was induced by irrigated water. The landslide fastigium was happened about 1990, and it was 4 times after 1992 when it was basic stabilized. Based on the analyzed to the physical and chemical character of land, the mechanism of landslide induced by irrigated water had been studied in this paper. The per annum sediment yield of landslide was 5.722×105m3, and the sediment yield of land subsidence was 1.552×106m3. So the total sediment yield was 1.552×106m3. The economical loss were 3.38×105 yuan.更多还原