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Volume 39 Issue 1
Jan.  2020
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Article Navigation >  Bulletin of Geological Science and Technology  > 2020  >  39(1): 53-59, 66
Zhou Jianwei, Su Danhui, Yuan Lei, Wen Bing, Feng Haibo, Zheng Xiaoming, Yin Zuocong, Zhang Anpeng. Water vapor transport mechanism in unsaturated zone of rock slope and its ecological significance[J]. Bulletin of Geological Science and Technology, 2020, 39(1): 53-59, 66. doi: 10.19509/j.cnki.dzkq.2020.0106
Citation: Zhou Jianwei, Su Danhui, Yuan Lei, Wen Bing, Feng Haibo, Zheng Xiaoming, Yin Zuocong, Zhang Anpeng. Water vapor transport mechanism in unsaturated zone of rock slope and its ecological significance[J]. Bulletin of Geological Science and Technology, 2020, 39(1): 53-59, 66. doi: 10.19509/j.cnki.dzkq.2020.0106
shu

Water vapor transport mechanism in unsaturated zone of rock slope and its ecological significance

doi: 10.19509/j.cnki.dzkq.2020.0106
  • Received Date: 23 Jan 2020
    Abstract
  • Water in unsaturated zone of rock slope has important ecological significance for plant growth.At present, there are few systematic studies on water vapor transport in unsaturated zone of rock slope.Most of studies focus on the interface between atmosphere and rock mass and the qualitative level of whether condensate water can be generated, while the unsaturated zone of rock slope is not studied as a whole system.In order to elucidate the water vapor transport mechanism in unsaturated zone of rock slope and its relationship with plant growth, this paper carries out temperature and humidity monitoring test of the slope by means of thermodynamics and system science theory, and studies the water vapor transport mechanism in detail.It is found that the driving force of water vapor migration in the unsaturated zone of rock slope is the partial pressure gradient of water vapor.In winter, water vapor migrates from deep to shallow part of the slope; in summer, water vapor migrates from atmosphere to deep part of the slope.The unsaturated zone of rock slope has water vapor saturation zone, which is larger in summer and smaller in winter.At the same time, through monitoring and analyzing the survival rate of compound green plants in rock slope, the mechanism of water vapor circulation in unsaturated zone of rock slope and its ecological significance were discussed.This paper is of great theoretical and practical significance for studying hydrology of rock mass unsaturated zone, exploring the source of plant water, guiding the rehabilitation of rock slope and even arid and semi-arid zone.

     

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