Self-balancing siphon drainage method by using side slope declining drill hole

Abstract

The invention discloses a self-balancing siphon drainage method by using a side slope declining drill hole. A siphon drainage pipe is introduced to the deep part of a side slope through a downward declining hole, a relative height difference between the opening and the bottom of the declining hole is kept less than 9m, and the siphon drainage pipe is introduced to a certain position of a slope surface from the bottom of the declining hole so that a water inlet and a water outlet of the siphon drainage pipe have the same elevation, and water is drained in real time when the water level of a slope body is raised. By adopting the self-balancing siphon drainage method provided by the invention, the condition of draining water at the deep part of the side slope can be realized, the problem of drainage treatment of big landslides can be solved, the low construction cost for maintaining side slope stabilization can be ensured, the earth and stone excavation is unneeded in the treatment process, the implementation process of treatment engineering is simple and easy to operate, drainage measures are favorable in reliability and strong in adaptability, and the power and the frequent management maintenance are unnecessary in the drainage process.

Description

technical field [0001] The invention relates to a deep drainage technology of a slope, in particular to a slope treatment method suitable for deformation and damage of slopes affected by groundwater. Background technique [0002] Landslide disasters caused by slope deformation and damage often cause heavy losses to engineering construction and life and property. Most landslides are significantly affected by rainfall because the rainfall causes the groundwater table to rise and reduce the stability of the slope. In particular, the stability of cohesive soil slopes containing gravel is closely related to the change of groundwater level. The rise of the groundwater level of the slope is a process of rainfall accumulation. Generally, a heavy rainfall process will not cause a large rise in the groundwater level of the slope. Under these conditions, the process of heavy rainfall further raises the groundwater level of the slope body, which will cause slope damage and landslides....

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Problems solved by technology

[0003] The current main drainage measures for slopes include: underground drainage holes, horizontal drainage holes, water collection well pumping, surface drainage ditches and blind drainage ditches, etc. The main problems of these drainage measures are: (1) The drainage measures of the slope have a negative impact on the drainage environment of the slope. The requirements are high, and many slopes often lack favorable landform conditions, which makes it difficult to ensure the effectiveness of drainage measures; (2) Surface drainage and shallow drainage have poor effects on improving slope stability; (3) The cost of underground drainage holes is relatively high High, complex construction technology; (4) Water collection well pumping requires power and regular management

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