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Simple and convenient method for detecting original content of gas

A gas and content technology, which is applied in the field of detecting the original gas content, can solve the problems of long time-consuming, poor accuracy, troubles, etc., and achieve the effect of shortening time, saving manpower and material resources, and easy operation

Inactive Publication Date: 2017-05-10
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gas content in the coal seam is directly related to the gas pressure of the coal seam, but it is cumbersome to measure the original gas pressure of the coal seam downhole, and the accuracy is poor, so the analytical method is often used to measure the gas content of the coal seam on site
Although the gas content obtained by this method can guide the on-site production to a certain extent, the process takes a long time. , always in parsed state
How much gas is released in this process cannot be directly measured

Method used

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  • Simple and convenient method for detecting original content of gas
  • Simple and convenient method for detecting original content of gas

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Experimental program
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specific Embodiment approach

[0012] The convenient method for detecting the original content of gas of the present invention, its preferred embodiment is:

[0013] Include steps:

[0014] A. Take coal samples and conduct on-site analysis: The exposure time of coal samples in the air should be minimized, and the coal samples should be analyzed immediately after they are filled into tanks. , Drilling time, the time when the drilling tool is lifted to the hole, the time when the coal sample is filled in the tank, and the time when the analysis and measurement start. After the analysis starts, the gas analysis rate and the corresponding time should be recorded;

[0015] B. Regress the obtained data to obtain the relationship curve between the gas precipitation rate and time: perform regression on the measured data in the statistical software, and then obtain a curve equation;

[0016] C. Calculating the gas content by integration: Integrate the obtained curve equation with time t to calculate the gas content...

specific Embodiment

[0019] 1. Take coal samples and conduct on-site analysis: The exposure time of coal samples in the air should be minimized, and the coal samples should be analyzed immediately after they are filled into tanks. In this process, it is necessary to accurately record the time of encountering coal in the drilling hole, the time of drilling coal samples, the time of pulling out of the drill, the time of lifting the drilling tool to the hole, the time of coal sample filling, and the time of starting analysis and measurement. After the analysis starts, the gas analysis rate and the corresponding time should be recorded.

[0020] 2. Regression the obtained data to obtain the relationship curve between the gas precipitation rate and time: the measured data is regressed in the statistical software to obtain a curve equation.

[0021] 3. Integrate to obtain gas content: integrate the obtained curve equation for time t to calculate the gas content of the coal seam.

[0022] Compared with ...

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Abstract

The invention discloses a simple and convenient method for detecting original content of gas. The simple and convenient method comprises the following steps: taking a coal sample; after filling the coal sample into a tank, immediately analyzing; in the process, accurately recording drilling and coal meeting time, coal sample drilling time, drilling starting time, time for lifting a drilling tool to a hole, coal sample tinning time and time for starting analysis and determination; after starting the analysis, recording time corresponding to a recorded gas analysis speed; carrying out regression on obtained data to obtain a relation curve between a gas separation speed and time; carrying out the regression on measured data in statistical software, so as to obtain a curvilinear equation; carrying out integration to obtain gas content: carrying out the integration on time through the obtained curvilinear equation and calculating the content of the gas in a coal seam. According to the simple and convenient method disclosed by the invention, the curve of the gas separation speed and the time is ingeniously utilized; a gas amount before a test, namely the amount of the gas separated out at the initial stage of sampling, is calculated, so that an obtained result is closer to the original content of the gas in the coal seam; the simple and convenient method is simple and convenient to operate, the data processing time is greatly shortened and manpower and material resources are saved.

Description

technical field [0001] The invention relates to a coal seam gas detection technology, in particular to a simple method for detecting the original gas content. Background technique [0002] The purpose of on-site sampling and detection of coal seam gas content in underground working faces of coal mines is to accurately grasp the amount of coal seam gas emission, so as to take corresponding outburst prevention measures to ensure safe production at the working face. The gas content in the coal seam is directly related to the gas pressure of the coal seam, but it is troublesome to measure the original gas pressure of the coal seam downhole, and the accuracy is poor, so the analytical method is often used to measure the gas content of the coal seam on site. Although the gas content obtained by this method can guide on-site production to a certain extent, the process takes a long time. , is always parsed. How much gas is released in this process cannot be directly measured. Gen...

Claims

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Application Information

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IPC IPC(8): G01N1/08G01N33/22
CPCG01N1/08G01N33/225
Inventor 王家臣李杨张康宁杨胜利潘卫东仲淑姮
Owner CHINA UNIV OF MINING & TECH (BEIJING)