Method for treating landslide projects through combining chemical electroosmosis method with micro anti-slide piles

Abstract

The invention relates to a method for treating landslide projects through combining a chemical electroosmosis method with micro anti-slide piles. The method comprises the following steps of: arranging metal electrodes and pouring different chemical solutions in boreholes and forming electroosmosis and chemical reaction under the action of a direct current field so as to enhance the shear strengthof potential failure surfaces of sliding zones; and then casting concrete in the boreholes and forming a micro reinforced concrete anti-slide pile system so as to provide a slide-resisting force. Themethod for treating the landslide projects through combining the chemical electroosmosis method with the micro anti-slide piles has the advantages and effects that: through carrying out electroosmosis reinforcement on the soft soil layers of potential landslide zones by using the chemical electroosmosis method, the coefficient of the shear strength of the potential landslide zones is remarkably increased, and the processing cost for the anti-slide piles or other treatment methods is effectively reduced; the bore diameter of the boreholes required by the micro anti-slide piles is small and themicro anti-slide piles are formed in identical boreholes to those for the chemical electroosmosis method through sequentially constructing, thus the difficulty and the cost for boring are low; and the shear strength and the slide-resisting force for landslide sliding zones are effectively enhanced. The method provided by the invention has the characteristics of simple construction technology, strong operability, convenience for quality control, obvious economic benefit and remarkable effect for treating landslides.

Description

Technical field [0001] The invention belongs to the technical field of rock landslide treatment engineering, and is a method for treatment of landslide engineering by chemical electroosmosis combined with miniature anti-slide piles. Background technique [0002] my country is a country with serious landslide disasters. Landslide disasters directly affect people's lives and property safety. Landslide management is a national disaster prevention and mitigation project with high technical difficulty, large investment amount, dangerous construction, and great destructiveness. With the operation of the normal water storage level of the Three Gorges Project, the landslide treatment project in the Three Gorges Reservoir area is particularly prominent. The landslide in the reservoir area will directly affect shipping and the safety of the dam. At present, the treatment of landslides mainly focuses on several methods such as slope cutting, weight reduction and back pressure, anti-slide re...

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Problems solved by technology

[0003] Prior to the present invention, the Chinese patent "Slope Anti-slide Pile" (Patent No.: ZL200410008780.0) disclosed a compression side with a V-shaped cross section. Shaped anti-slide piles, when the soil is partially deformed, the landslide body will move along the V-shaped area formed between the two anti-slide piles on the outer surface of the anti-slide piles, and the landslide body will become more and more dense, resulting in an arch effect, thus To ensure the stability of the landslide; however, due to the special pile type, the drilling construction is difficult, and the construction cost is high; at the same time, due to the lack of effective treatment of the potential sliding surface, the anti-sliding force that needs to be applied is relatively large, resulting in an increase in the amount of engineering and processing. Increased costs

The Chinese patent "Side Landslide Failure Surface Locking Solid and Its Installation Method" (Patent No.: ZL200910103618.X) discloses a side landslide failure surface locking solid. By filling the locking solid with a mixture of quicklime and expansion agent, it is driven into the locking solid. After solidification, the locking solid in the borehole can be closely combined with the hole wall after absorbing water, and the overall rigidity between the upper rock and soil mass, sliding bed and locking solid on the sliding surface of the side landslide is enhanced; but the pile diameter is relatively large, and the drilling construction cost Higher, the use of the jacket rigid ring also increases the cost of treatment; the locking solid has a limited ability to absorb water in the landslide body

However, the existing technology has done less work on improving the shear strength parameters of the potential failure surface, and there is no better technical method to improve the potential failure surface; and the landslide is only treated by conventional methods such as anti-slide piles or anchoring technology, so The anti-skid force and engineering cost that needs to be paid are relatively high

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