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An electromagnetic field seepage combined bolt drainage device and its construction method

A technology of drainage device and construction method, which is applied in the direction of infrastructure engineering, construction, sheet pile wall, etc., can solve the problems of reducing the drainage effect of drainage bolts, and achieve the effect of good drainage effect, increasing infiltration rate, and accelerating drainage.

Active Publication Date: 2018-09-11
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the invention is to solve the problem that the drainage effect of the drainage bolt is reduced when the permeability of the rock and soil around the bolt is low; to propose an electromagnetic field seepage combined bolt drainage device and its construction method

Method used

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  • An electromagnetic field seepage combined bolt drainage device and its construction method
  • An electromagnetic field seepage combined bolt drainage device and its construction method
  • An electromagnetic field seepage combined bolt drainage device and its construction method

Examples

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Effect test

Embodiment 1

[0051] A construction method for an electromagnetic field seepage combined bolt drainage device, comprising the following steps:

[0052]1) Investigate and analyze the geological conditions of the slope, conduct engineering geological exploration and design, analyze and determine the position of the potential sliding surface of the landslide, and determine the depth and diameter of the designed borehole 11. In this embodiment, the borehole 11 has a diameter of 200mm and a depth of 11m, and penetrates through the potential sliding surface to the stable rock and soil body for more than 3m. The end of the borehole 11 is slightly inclined upward, and the inclination angle is 2 degrees.

[0053] 2) According to the depth and diameter of the borehole 11, make the permeable steel pipe 3:

[0054] 2-1] Intercept the permeable steel pipe 3 , the pipe wall of the permeable steel pipe 3 has several drainage holes 4 . The permeable steel pipe 3 has openings at both ends and an outer dia...

Embodiment 2

[0068] A construction method for an electromagnetic field seepage combined bolt drainage device, comprising the following steps:

[0069] 1) Investigate and analyze the geological conditions of the slope, conduct engineering geological exploration and design, analyze and determine the position of the potential sliding surface of the landslide, and determine the depth and diameter of the designed borehole 11. In this embodiment, the borehole 11 has a diameter of 500mm and a depth of 30m, and penetrates through the potential sliding surface to the stable rock and soil body for more than 3m. The end of the borehole 11 is slightly inclined upwards, and the inclination angle is 2 degrees to 4 degrees.

[0070] 2) According to the depth and diameter of the borehole 11, make the permeable steel pipe 3:

[0071] 2-1] Intercept the permeable steel pipe 3 , the pipe wall of the permeable steel pipe 3 has several drainage holes 4 . The permeable steel pipe 3 has openings at both ends a...

Embodiment 3

[0085] The main technical content of this embodiment is the same as that of Embodiment 1 or 2. Further, before the start of step 6), the permeable concrete anchor body 2 is initially set, and the permeable steel pipe 3 is stretched outward to form prestress, and then the outer anchor is poured pier 10.

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Abstract

The invention discloses an electromagnetic field seepage combined anchor rod draining device and a construction method thereof. The electromagnetic field seepage combined anchor rod draining device is characterized by comprising a permeable steel pipe, permeable concrete, coils, epoxy resin, locating supports, an external anchor steel plate and an external anchor pier; drain holes are formed at intervals in the surface of the permeable steel pipe on which the coils are wound, and the coils are connected to a high-frequency alternating-current power supply through conducting lines; each of the inner and outer sides of the permeable steel pipe is coated by an epoxy resin protective layer, and the permeable concrete is poured at the inner and outer sides of the permeable steel pipe; and the external anchor steel plate and the locating supports are connected with the permeable steel pipe, and the permeable concrete is poured at the end parts of the external anchor steel pipe and the permeable steel pipe to form the external anchor pier. By using the permeable steel pipe with the coils, an electromagnetic field and electromagnetic heating can act in a soil body around an anchor rod, so that the viscosity of water in the soil body is reduced and the draining efficiency is increased under the combined action of the electromagnetic field and a temperature field.

Description

technical field [0001] The invention relates to the technical field of rock-soil anchoring engineering, in particular to an electromagnetic field seepage combined bolt drainage device and a construction method thereof. Background technique [0002] Slope is one of the most common engineering forms in the construction of road and railway subgrade engineering, and the instability and collapse of the slope will cause heavy personnel or economic losses. The use of bolts to reinforce the slope is one of the most commonly used important methods in the engineering field; rainfall or groundwater level changes will cause water seepage in the rock and soil mass, which will reduce the shear strength of the rock and soil mass, resulting in edge Slope instability or collapse. For this technical problem, the common method is to install drainage facilities such as drainage ditches or drainage holes on the slope. However, in practical engineering applications, affected by factors such as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/74E02D3/11
CPCE02D3/11E02D5/74
Inventor 刘汉龙吴迪孔纲强周航丁选明
Owner CHONGQING UNIV
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