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Method for monitoring soil gas by field surveying

A soil gas, site technology, used in the analysis of gas mixtures, measurement devices, sampling, etc.

Inactive Publication Date: 2016-05-04
NANJING SREMOL ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when soil gas monitoring is performed on sites where existing buildings or other obstacles (such as rivers, landfills, etc.) , does not allow professional equipment to pass through obstacles in the way of vertical drilling, etc.), it is impossible to directly use the vertical drilling method for soil gas monitoring

Method used

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  • Method for monitoring soil gas by field surveying
  • Method for monitoring soil gas by field surveying

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Experimental program
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Embodiment Construction

[0015] This method includes the following steps:

[0016] 1) Select a location convenient for horizontal directional drilling around buildings or other obstacles;

[0017] 2) Use a horizontal drilling tool to drill holes and perform horizontal drilling under buildings or other obstacles; the drill bit at the front of the drilling tool is integrated with a guide instrument and a soil gas collection and transmission device. The guide instrument integrated on the drill bit is connected with the receiving device on the ground through wireless form to determine the position and depth of the underground drill bit. When the drill bit is drilling horizontally in the soil, if there is a deviation from the established track, the position of the drill bit can be adjusted in time to ensure that the drill bit reaches the specified depth and position in the soil.

[0018] 3) When drilling horizontally, the front end of the drilling tool is equipped with a drill pipe guide probe and a gas m...

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Abstract

The invention provides a method for monitoring soil gas by field surveying. The method comprises the following steps: selecting sites, which can be conveniently directionally drilled in the horizontal direction, of the periphery of a building or other obstacles; drilling by using a horizontal drilling tool; carrying out horizontal drilling under the building or the other obstacles, wherein a guiding device and a soil gas collection and transmission device are integrated on a drill bit at the front section of the drilling tool, and the guiding device integrated on the drill bit is connected with a receiving device on the ground in a wireless manner so as to ensure the position and depth of the underground drill bit; and when the drill bit is horizontally drilled into soil, adjusting the position of the drill bit in time if a condition that the drill bit deviates from an existing track occurs, so as to ensure that the drill bit reaches appointed depth and position in the soil.

Description

1. Technical field [0001] The invention relates to a method for monitoring soil gas in a site, in particular to a method for monitoring polluted soil gas in buildings or other obstacle sites. 2. Background technology: [0002] Soil gas monitoring includes the monitoring of volatile organic gases, oxygen, carbon dioxide, etc. in the soil. In the early stage of site investigation, for some suspected or confirmed polluted sites, soil gas monitoring is one of the important means to judge whether the soil of the site is polluted or to preliminarily judge the degree of soil pollution. [0003] At present, for soil gas monitoring, professional equipment such as Geoprobe is generally used to monitor the gas composition and content in soil qualitatively or semi-quantitatively through an online monitoring system using vertical drilling. However, when soil gas monitoring is performed on sites where existing buildings or other obstacles (such as rivers, landfills, etc.) , Professional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N1/22
CPCG01N33/0004G01N1/2294
Inventor 陈政陈露王青薇何志超唐海燕林继康
Owner NANJING SREMOL ENVIRONMENTAL TECH
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