Three-dimensional space water drainage method and structure of gravitational field

Abstract

The invention provides a tridimensionality drainage method for a gravity field. By drawing an underground percolation contour map and a stratigraphic section map, the method carries out earth stability analysis, and sets vertical gulley holes and the position of a cut-off wall according to the acquired data with the aid of a boundary map of a stratum percolation pressure field for stratum safety condition analyzed with stratum professional experience. The invention also provides a tridimensionality drainage structure of a gravity field, which comprises at least one cut-off wall and at least one horizontal drain pipe. A drainage path system constructed by the method can truly discharge perched water and underground vadose water in the tridimensionality geographic space of regions covered in discharge construction according to natural gravity of physics so as to ensure the designed drainage efficiency and effectively control the percolating water pressure in the stratum, thereby being applicable to stratum with various geological conditions and various percolation rates.

Description

technical field [0001] The present invention relates to a drainage method and structure of formation seepage water, in particular to a method of using gravity to construct a permanent automatic drainage path system in a three-dimensional stratum space and the structure of the drainage path system constructed according to the method. Background technique [0002] The water level line saturated with water in the stratum and the state of the seepage water pressure are important dynamic factors related to the stability of the stratum. At present, the drainage methods of various seepage water in the stratum are roughly described as follows: [0003] (1) Horizontal drainage hole method [0004] The horizontal drainage hole method is a design concept of water collection first and then drainage. The horizontal drainage hole is used to remove seepage water in the formation and reduce seepage water pressure. This method is a mature technology that has been used for a long time. Since...

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Problems solved by technology

[0010] The purpose of the present invention is to provide a gravity drainage method that is suitable for various formations and does not require maintenance and follow-up management, so as to solve the problems of the aforementioned various drainage methods, such as: it is impossible to determine that the construction can meet the design requirements, and the construction cost is expensive , long construction period, low safety in the construction process, follow-up maintenance and management after construction, short service life, and only temporary drainage, etc.

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