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Soil non-excavation grounding resistance reduction method

A non-excavation, soil technology, applied in the direction of connection, connection contact materials, electrical components, etc., can solve the problems of high design calculation value, shortening the life of the grounding body, and unsatisfactory, and achieve low overall cost, short construction period, Obvious effect of reducing resistance

Inactive Publication Date: 2012-07-25
云南省昆明农业气象试验站 +1
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  • Claims
  • Application Information

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Problems solved by technology

Moreover, the resistance reducing agent will generally corrode the grounding body, greatly shortening the life of the grounding body, resulting in high design calculation values ​​of grounding resistance, step voltage and contact voltage, which cannot meet the requirements of current standards

Method used

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  • Soil non-excavation grounding resistance reduction method
  • Soil non-excavation grounding resistance reduction method
  • Soil non-excavation grounding resistance reduction method

Examples

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Embodiment 1

[0015] Example 1: In mountainous areas where the soil types are gravel, gravel, pure stone, rock, limestone, weathered soil rock, sedimentary rock, etc., the soil texture is poor, the soil distribution is uneven, and the soil resistivity is above 300Ω. When installing electrical facilities, first analyze the geological survey report, and use the numerical simulation method to analyze the spatial distribution of soil resistivity in underground layers, obtain the distribution layer 8 with soil resistivity less than 300Ω.m, and determine the longitude, latitude and depth of the inflection point of the distribution layer The three-dimensional coordinates are then set on the control panel of the traction drilling rig according to the three-dimensional coordinates of the longitude, latitude and depth of the inflection point of the soil resistivity distribution layer, and the traction drilling path 8 is set; the traction drill bit pulls the hollow synthetic material pipeline 5, and the...

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Abstract

The invention relates to a soil non-excavation grounding resistance reduction method, in particular to a non-excavation project resistance reduction technology. The soil non-excavation grounding resistance reduction method is characterized in that two layers of horizontal resistance reduction ground screens are arranged on the grounding soil; one layer of the horizontal resistance reduction ground screen is arranged on the soil surface to form a surface ground screen, and the other layer is located in the underground soil layer with the soil resistance smaller than 300 ohm meters to form an underground ground screen; the surface ground screen is steel fabric; the underground ground screen is formed by spraying a resistance reducing agent into the soil through holes formed on the pipes laid by a directional drilling non-excavation pipe laying method so as to bind with the soil; and the surface ground screen is connected with the underground ground screen through a vertical grounding connection wire. The non-excavation resistance reduction method provided by the invention does not affect the traffic nor destroy the environment, and has the advantages of short construction period, low comprehensive cost, significant resistance reduction effect, and high social and economic value.

Description

technical field [0001] The invention belongs to lightning protection construction technology, in particular to a non-excavation engineering grounding resistance reduction technology. Background technique [0002] When electrical grounding devices are used in industries such as electric power, telecommunications, construction, radio, television, railways, highways, aviation, water transportation, national defense and military industry, metallurgical mines, coal, petroleum, chemical industry, textiles, medicine and health, culture and education, etc., it is necessary to Conduct resistance reduction treatment on grounded soil. The traditional method of reducing resistance is to lay welded steel mesh on the soil surface. For the purpose of reducing the cost of grounding, the resistance reducing agent was used to reduce the resistance. The resistance reducing agent is a good conductor. When it is used between the grounding body and the soil, it can be in close contact with the g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R4/66H01R43/00
Inventor 王鹏云李万春曾琳曾艳李楠王再军
Owner 云南省昆明农业气象试验站
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