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文中采用土壤深层水量渗漏测试记录仪对库姆塔格沙漠地区多坝沟季节性河道1.5m深处的水分渗漏过程进行了实时监测与人工模拟实验。结果表明:1)在自然流水过程中,上游有泉水维持,长期流水河段水分渗漏速率的波动幅度为0.1750~0.6042mm/min,平均值为0.3444mm/min;2)下游间歇性过水河段在无水期,基本没有渗漏,有水流过期间的水分渗漏速率的波动幅度为0.0059~0.6073mm/min,平均值为0.0809mm/min;3)水层深度的变化对土壤渗漏速率影响显著,当水层深度增加时,渗漏速率呈现先增加后稳定的趋势,当水层深度下降时,土壤渗漏速率随之降低;4)自然记录与人工模拟的结果均表明:间歇性来水时,大约历时4~6h就可以入渗到1.5m深度,而每次退水后(断流后)渗漏速率逐渐减小,但这个过程维持8~10d时间。
In this paper, a deep soil leakage test recorder was used to monitor and simulate the water leakage at a depth of 1.5m in the Daduogou seasonal channel in the Kumtag Desert. The results showed that: 1) In the process of natural water flow, the spring water was maintained in the upper reaches and the water leakage rate in the long-term water flow reached between 0.1750 and 0.6042 mm / min with an average of 0.3444 mm / min. 2) During the waterless period, there was no seepage. The water leakage rate fluctuated within the range of 0.0059 ~ 0.6073mm / min with an average of 0.0809mm / min during the period of water flow. 3) The change of water depth affected soil infiltration The leakage rate has a significant effect. When the water depth increases, the leakage rate first increases and then stabilizes. When the water depth decreases, the soil leakage rate decreases. 4) The results of natural records and artificial simulations show that: Intermittent water, the lasted about 4 ~ 6h can infiltrate to a depth of 1.5m, and each time after the reclamation (after the cutoff) leakage rate gradually decreased, but the process to maintain the 8 ~ 10d time.