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A prefabricated soil gas well device and its preparation method and construction method

A gas well and soil technology, applied in measuring devices, sampling devices, instruments, etc., can solve the problems that affect the accuracy of detection results, the surrounding environment of the pollution source is complex, and it is not suitable for on-site construction, so as to shorten the construction period, fast installation, and scrub resistance. Good results

Active Publication Date: 2021-12-28
SUZHOU HUANZHIAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing soil gas collection equipment always has a small amount of soil entering the sampling device when it penetrates into or pulls out the soil, causing blockage and impure gas, which affects the accuracy of the test results
[0004] According to the "Technical Guidelines for Soil and Groundwater Self-Monitoring of Enterprises in Production (Draft for Comments)", 1-2 soil monitoring points are arranged around each key facility of an in-production enterprise, and 2-3 soil monitoring points are arranged in each key area. There are many points and the surrounding environment of some enterprises' pollution sources is complex, so it is not suitable for on-site construction. Therefore, it is necessary to design a simple soil gas well device according to the actual soil gas requirements of the enterprises in production.

Method used

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  • A prefabricated soil gas well device and its preparation method and construction method
  • A prefabricated soil gas well device and its preparation method and construction method
  • A prefabricated soil gas well device and its preparation method and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Example 1: figure 1 , The preform means a soil gas well, comprising an outer sleeve, the bottom of the base 1 is detachably connected to the outer tube 2, the outer sleeve 1 is connected with the base 2 or the separation is achieved by rotating operation; the outer sleeve 1 is provided with a first lumen sequentially quartz sand bottom 3, a first dry bentonite layer 4, a first layer 5 and the first bentonite slurry cement mortar layer 6, the first quartz sand 3 7 equipped with a first probe, the first inner layer of cement mortar 6 is inserted and is provided with an end portion 8 of the inner sleeve 8 of the inner sleeve said outer sleeve 1 extends upwardly within the inner sleeve 8 is provided with downwardly extending first probe 7 and is connected to a first air duct 9, the upper end portion of the first guide pipe 9 is provided with a first valve 10, the inner sleeve 8 of the mouthpiece is provided with with the sealing cap 12, the base 1 is provided with the above-des...

Embodiment 2

[0073] Example 2: Figure 4 , The preform means a soil gas well, comprising an outer sleeve, the bottom of the base 1 is detachably connected to the outer tube 2, the outer sleeve 1 is connected with the base 2 or the separation is achieved by rotating operation; the outer sleeve 1 is provided with a first lumen sequentially quartz sand bottom 3, a first dry bentonite layer 4, a first layer 5 and the first bentonite slurry cement mortar layer 6, the first quartz sand 3 7 equipped with a first probe, the first interposed layer of cement mortar is provided with an end portion of the inner sleeve and the inner sleeve 8 8 6 projecting upwardly within the outer sleeve 1, the outer tube 1 quartz sand between the first 3 and the base 2 is provided with a set of extension layer structure 13, the bottom extension layer structure successively comprises a second quartz sand 13-1, 13-2 of the second layer of dry bentonite, a second bentonite slurry layer 13-3 and the third layer of dry bentoni...

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Abstract

The invention discloses a prefabricated soil gas well device and its preparation method and construction method. The device adopts a pre-casting method, and the first quartz sand layer, the first dry bentonite layer, the first bentonite mud layer, and the first cement mortar layer , the first probe, the first air guide pipe, the inner casing and the base constitute a prefabricated part that can be separated from the outer casing. During construction and installation, the whole device can be put in after drilling on site, and the soil gas can be formed after removing the outer casing. For the monitoring well, fill the gap between the prefabricated part and the well with bentonite, and pour cement mortar at the joint between the inner casing and the ground to realize the assembly and fixation of the gas well device, which has good portability, flexibility, and transportation The installation is simple; in addition, the present invention can effectively ensure the quality of gas sampling, thereby helping to ensure the accuracy of soil gas monitoring results, and the prefabricated parts can avoid construction errors caused by on-site construction.

Description

Technical field [0001] The present invention relates to the field of monitoring technology of soil gas. Background technique [0002] Soil gas is one of the important components of the soil. Soil gas is basically mainly atmospheric, but there are also a small part of the biochemical process in the soil, which is of great significance for plant growth and soil formation. Detection of soil gas can understand the ventilation of the soil, or indirectly reflect the soil's contamination of some pollutants. [0003] At present, through the measurement of the soil indicators, it is the most important means of collecting soil gas samples. The existing soil gas collection equipment has a small amount of soil in the sampling device in depth or unplugging the soil, causing clogging and gas to not purify, affecting the accuracy of the test results. [0004] According to the "Soil and Groundwater Self-Monitoring Technical Guide (Draft for Groundwater), 1-2 soil monitoring points in each key fa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00G01N1/22
Inventor 李刚沈伟伟沈益婷姚香平
Owner SUZHOU HUANZHIAN INFORMATION TECH CO LTD
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