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Forecasting method for gas outburst of tunneling coal roadway

A gas outburst and prediction method technology, applied in the field of prediction, can solve problems such as difficult to improve accuracy, uneven distribution of coal body, uneven stress distribution, etc., and achieve accurate prediction, low noise of monitoring data, and credible results

Inactive Publication Date: 2013-09-04
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

The above static prediction methods are affected by factors such as artificiality, uneven coal body distribution, and uneven stress distribution, so it is difficult to improve the accuracy of prediction.

Method used

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  • Forecasting method for gas outburst of tunneling coal roadway
  • Forecasting method for gas outburst of tunneling coal roadway
  • Forecasting method for gas outburst of tunneling coal roadway

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0018] Figure 1 is a flow chart of the data processing of the radon concentration detected by the radon concentration measuring instrument on the coal mine tunneling working face: the radon concentration measuring instrument is installed near the head of the excavation face, which must meet the measurement range of the radon concentration measuring instrument and must To avoid interference and damage to the instrument due to construction factors, for example, real-time monitoring of radon concentration changes at a distance of 15 meters from the excavation surface, as the excavation surface advances, adjust the position of the radon concentration detector, and set it according to the actual situation of the coal roadway excavation surface The location of the monitoring, after the monitoring starts, when the real-time monitoring data volume reaches the initial ...

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Abstract

Provided is a forecasting method for gas outburst of a tunneling coal roadway. The forecasting method for gas outburst of the tunneling coal roadway comprises the steps that a radon concentration tester is used for carrying out continuous and real-time monitoring on concentration of radon nearby a coalface of the coal roadway, a dynamic gas outburst danger critical index is built, data, obtained through continuous monitoring, of the concentration of the radon and the dynamic gas outburst danger critical index are compared, and gas outburst is forecasted. The forecasting method for gas outburst of the tunneling coal roadway is a dynamic non-contact type continuous forecasting method, compared with a static forecasting method, the defect that the static forecasting method is influenced by factors such as manpower, uneven distribution of coal bodies and uneven distribution of stress is overcome, and accuracy of forecast is improved.

Description

Technical field [0001] The present invention involves a prediction method, especially a prediction method of digging into the coal alley. Background technique [0002] The protruding gas is an unusual complicated power phenomenon in the production of coal mines, and it is also one of the main disasters of coal mines, which causes great harm to safety production.The prediction of the prominent gas is an important aspect of the research of coal mines. At present, my country's gas prominent daily predictions are used in large quantities of diamonds S, drilling gas pouring out of the initial speed Q, drilling gas solution indicators K 1 Value, △ H 2 , Gas Disposter Index △ P, Coal Body Pait Oyquartine F, gas pressure P and other drilling static predictive prediction methods.The above static prediction methods are affected by factors such as artificial and uneven distribution of coal bodies and uneven stress distribution, and the accuracy of prediction is difficult to improve. [0003...

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Application Information

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IPC IPC(8): E21F17/18
Inventor 赵志刚谭云亮赵同彬宋璐璐武见周
Owner SHANDONG UNIV OF SCI & TECH