Loess platform landslip comprehensive treatment method based on underground water level control

Abstract

The invention discloses a loess platform landslip comprehensive treatment method based on underground water level control. The method is characterized in that a method combining the long term and the medium and short term is adopted; a long term treatment method includes the step that the unfavorable situation that the underground water level rises continuously is restrained based on a water-saving irrigation initiative prevention and control measure, and therefore a landslip risk is controlled; and a medium and short term treatment method includes the step that the existing ultra-high underground water level fast lowers through an effective drainage engineering measure, and the purpose of reducing landslip hazards is achieved. The loess platform landslip comprehensive treatment method has the beneficial effects that by means of the technical scheme, both symptoms and root causes of landslips can be treated, on the long term scale, the unfavorable situation that the underground water level rises continuously is restrained based on the water-saving irrigation initiative prevention and control measure, and therefore the landslip risk is controlled; and on the medium and short term scale, the existing ultra-high underground water level fast lowers through the effective drainage engineering measure, and the purpose of reducing the hazards is achieved.

Description

technical field [0001] The invention relates to a method for comprehensive treatment of loess platform landslides based on groundwater level control. Background technique [0002] Due to long-term flood irrigation, the groundwater level in the loess plateau area is too high, which induces a large number of landslides. The existing technology has the following methods to control the landslides of the loess plateau: [0003] 1. Slope cutting scheme: that is to adopt the means of excavating multi-level slopes to slow down the slope and achieve the purpose of landslide control. Its disadvantages are: (1) The loess at the foot of the slope is saturated with flow and plastic, and it cannot be constructed according to the design drawing; (2) It is an emergency treatment plan, which does not reduce the groundwater level that is crucial to the stability of the slope. Not a permanent cure. [0004] 2. Vertical mixed well drainage: This method is suitable for slope drainage of specif...

AI Technical Summary

Problems solved by technology

Its disadvantages are: (1) The loess at the foot of the slope is saturated with flow and plastic, and it cannot be constructed according to the design drawing; (2) It is an emergency treatment plan, which does not reduce the groundwater level that is crucial to the stability of the slope. No permanent cure

Its disadvantages are: (1) The filter material around the hole wall needs to use fine sand

If the particle size is too large, it is easy to cause silt holes, which will affect long-term use; (2) the permeability of loess is small, resulting in a small radius of influence on the drainage of the mixing well, the precipitation effect is not significant, and the engineering application cost is high

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