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Test device and test method for poisonous and harmful gas deep hole in tunnel

A technology of harmful gas and testing equipment, applied in mining equipment, measuring devices, earthwork drilling and mining, etc., can solve the problems of inaccessibility and inaccurate gas detection in tunnel exploration holes, etc., and achieve the effect of convenient statistics and analysis

Active Publication Date: 2019-10-08
CHENGDU SUDU GEOLOGICAL ENG CONSULTING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the gas detection in the existing tunnel exploration holes is inaccurate, and at the same time, the relationship between the concentration of various gases in the hole and the drilling depth cannot be obtained. The purpose is to provide a deep hole for toxic and harmful gases in the tunnel The test equipment and its test method, the equipment and its test method can not only effectively detect the composition and concentration of various gases in the borehole, but also record the concentration values ​​of each gas at different depths, and summarize the relationship between the concentration of each gas and the depth of the borehole relation

Method used

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  • Test device and test method for poisonous and harmful gas deep hole in tunnel
  • Test device and test method for poisonous and harmful gas deep hole in tunnel
  • Test device and test method for poisonous and harmful gas deep hole in tunnel

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Experimental program
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Effect test

Embodiment 1

[0035] Such as Figure 1 to Figure 4 As shown, the tunnel toxic and harmful gas deep hole test equipment includes a detector 1, a lifter 4 and a control terminal 6 connected in sequence. The detector 1 is used to detect the gas composition and concentration in the hole and collect gas samples. The detector 1 The lifter 4 is connected by a self-supporting cable 2 and a pulley 3. The self-supporting cable 2 is composed of a steel rope and an electric wire. The pulley 3 changes the pulling direction of the self-supporting cable 2, and the control terminal 6 issues operation instructions, displays the working status, displays and saves the detection data, and the control terminal 6 realizes the movement and testing of the detector 1 by controlling the lifter 4 and sampling. The wireless transmission 5 can be used to realize signal transmission between the elevator 4 and the control terminal 6, and the wireless data transmission can be used between the elevator 4 and the control t...

Embodiment 2

[0050] The structure of this embodiment is basically the same as that of Embodiment 1, the difference is that it is used for the implementation of gas sampling, and an empty gas sample bag 19 should be installed before starting up the equipment. First pull out the rope end of the cable 2 from the lifter 4, connect the cable 2 to the in-hole detector 1, then put the in-hole detector 1 into the drilled hole, and set the position of the pulley 3 and the lifter 4 After the device is powered on, the control terminal 6 automatically wirelessly connects to the lifter 4, and the device will display a ready icon on the touch screen 30 of the control terminal when the device is ready. Equipment assembled as figure 1 shown. After booting, the detector 1 in the hole will preheat the air pressure sensor 17, and the control terminal 6 will display the words "equipment preheating". At this time, the equipment cannot be operated, and the water contact insurance 38 is automatically disconnect...

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Abstract

The invention discloses a test device and a test method for a poisonous and harmful gas deep hole in a tunnel. The test device comprises a detector, a lifter and a control terminal, which are sequentially connected, and the control terminal is used for realizing the movement of the detector by controlling the lifter. The detector comprises a shell which is hollow and open at two ends, an air inletport is formed in the outer wall of the shell, a gas detection device and a gas sampling device are arranged in the shell, and the gas inlet port is located between the gas detection device and the gas sampling device. The test method comprises two steps of gas detection and gas sampling. According to the device and the method in the invention, the components and the concentration of various gases in a drilled hole can be effectively detected, the detection data has real-time performance and accuracy, the concentration values of the gases at different depths can be recorded, the relation between the concentration of each gas and the depth of the drilled hole is summarized, and the test device and the test method are professional for the industry of evaluating the poisonous and harmful gas in the tunnel, are used for detecting the concentration of the poisonous and harmful gas in the geological exploration drilled hole and are suitable for evaluation of poisonous and harmful gases inrailway, highway and urban rail transit tunnels.

Description

technical field [0001] The invention relates to the technical field of geological exploration drilling detection, in particular to a deep hole testing device for toxic and harmful gas in tunnels and a testing method thereof. Background technique [0002] Toxic and harmful gases pose a huge threat to tunnel engineering (such as CH 4 、H 2 Initiated deflagration, H 2 S, SO 2 Personnel poisoning caused by CO 2 The railway industry even stipulates that toxic and harmful gas evaluation must be carried out in the survey and design stage of railway tunnels, among which the detection of toxic and harmful gases in exploration boreholes is one of the important means of tunnel toxic and harmful gas evaluation. [0003] At present, the industry mainly uses portable gas concentration detectors to detect the gas composition and concentration at the tunnel exploration hole orifice. This detection method has two disadvantages: one is H 2 S, SO 2 Gases such as gas are heavier than air, ...

Claims

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Application Information

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IPC IPC(8): G01N33/00G01D21/02
CPCG01N33/0062G01N33/0073G01D21/02G01N33/0036G01N1/2294G01N1/24G01N2001/245E21B49/08E21F17/00G01L5/047G01L19/0618
Inventor 苏培东邱鹏
Owner CHENGDU SUDU GEOLOGICAL ENG CONSULTING CO LTD