栅格岩溶分布式水文模型
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

P338

基金项目:

国家重点研发计划(2018YFC1508101);国家自然科学基金(51879067);江苏省杰出青年基金(BK20180022)


Grid-based karst distributed hydrological model
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 文章评论
    摘要:

    为提高岩溶区洪水的模拟精度,基于自由水蓄水库和线性水库的概念,提出了考虑表层岩溶带与深层地下溶隙调蓄作用下的降水-径流分布式模拟方法。在栅格新安江模型的基础上引入表层岩溶带及深层地下溶隙调蓄模块,构建了栅格岩溶分布式水文模型,并将该模型和栅格新安江模型应用于典型岩溶流域(普厅河流域)进行对比分析。结果表明:栅格岩溶分布式水文模型在普厅河流域的模拟精度高于栅格新安江模型,20场洪水的平均径流深误差降低了4.92%,平均洪峰误差降低了3.59%,平均确定性系数提升了0.23;基于栅格的表层岩溶带自由水蓄水库及深层地下溶隙线性水库可根据流域岩溶发育的空间分布情况,对表层岩溶带和深层地下溶隙调蓄过程进行精确模拟;栅格岩溶分布式水文模型的参数空间分布考虑了流域的石漠化情况,模拟的径流成分较栅格新安江模型更加合理,能有效提高普厅河流域的洪水模拟精度。

    Abstract:

    This study aims to improve the flood simulation accuracy in karst areas. Based on the concepts of freewater reservoir and linear reservoir, a distributed rainfall-runoff simulation method was proposed to consider the regulation effect of epikarst and deep subsurface fracture on water storage. A grid-based karst distributed hydrological model(GKDHM)was established by introducing the water storage modules of epikarst and deep subsurface fracture into the grid-Xinanjiang(GXAJ)model. The GKDHM was further tested through its application to a typical karst-dominated watershed, the Puting River Watershed. The results show that the simulation accuracy of the GKDHM in the Puting River Watershed is apparently higher than that of the GXAJ model, and compared to the GXAJ model, the GKDHM decreased the average relative runoff error of 20 flood events by 4. 92%, decreased the average relative flood peak error by 3. 59%, and increased the average deterministic coefficient by 0. 23. With the GKDHM, the water storage regulation effects of epikarst and deep subsurface fracture can be accurately simulated using distributed freewater reservoirs of epikarst and linear reservoirs of deep subsurface fractures when detailed information of the spatial distribution of karst-dominated area is available. The GKDHM is also capable of well considering the rocky desertification of the watershed through rational determination of the spatial distribution of its parameters. The simulated runoff components by the GKDHM are apparently more reasonable than those by the GXAJ model. In conclusion, the developed GKDHM can effectively improve the accuracy of flood simulation in the Puting River Watershed.

    参考文献
    相似文献
    引证文献
引用本文

张珂,周佳奇,张企诺,等.栅格岩溶分布式水文模型[J].水资源保护,2022,38(1):43-51.(ZHANG Ke, ZHOU Jiaqi, ZHANG Qinuo, et al. Grid-based karst distributed hydrological model[J]. Water Resources Protection,2022,38(1):43-51.(in Chinese))

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2021-08-03
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2022-01-20
  • 出版日期: