Method for evaluating gas tunnel outburst and device for implementing same

An evaluation method and technology for tunnels, applied in the fields of instrumentation, calculation, electrical and digital data processing, etc., can solve the problems of small number of gas tunnels, tight construction period, and difficulty in excavating coal at skew crossings, and achieve the effect of strong practical significance.

Inactive Publication Date: 2009-09-02
CHINA RAILWAY HI TECH IND CORP LTD
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Problems solved by technology

[0004] In comparison, the coal system has accumulated a set of effective production management rules and regulations over the years, has special explosion-proof and outburst-proof equipment, and has a professional team that has been dealing with coal and gas for a long time. The number of gas tunnels is small, lack of experience, lack of equipment, and lack

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  • Method for evaluating gas tunnel outburst and device for implementing same
  • Method for evaluating gas tunnel outburst and device for implementing same
  • Method for evaluating gas tunnel outburst and device for implementing same

Examples

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Embodiment 1

[0026] Such as figure 1 As shown, the gas outburst index data were evaluated at the pre-construction site. In the gas tunnel work area, the maximum buried depth of the tunnel face is measured to be 220; there is no geological structure measured in front of the tunnel face; the advance drilling of the tunnel face is normal, and there is no dynamic phenomenon; the gas pressure value of the tunnel face is measured is 0.25; the measured initial velocity value of gas gushing from the borehole opposite the face is 2.5; the coal structure type of the face is measured as primary structure coal; The data processor (3) reads out the blank table of evaluation of outstanding risk indicators from the form memory (2) figure 2 In the above process, when the data (4) is input, compare and classify the input data with the indicators in the outstanding risk index evaluation system table memory (1), and generate the index data evaluation classification table for the classification results im...

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Abstract

The invention discloses a method for evaluating a gas tunnel outburst, an index system for implementing the method, and a device for implementing the method, which belong to the technical field of gas tunnel constructions and aim to evaluate the gas tunnel outburst. The method, the system and the device are characterized by establishing a prominence hazard index evaluation system table memory (1), a security level table memory (6) and a table memory (2), and inputting the following prominence hazard indexes on site: largest embedding depth, geological structure, advancing drilling power phenomenon, gas pressure, measurements of drilling gas outrush initial velocity and coal body structure types, and evaluation data, wherein the prominence hazard indexes are analyzed and evaluated to obtain an evaluation result; and because the indexes not only take geologic factors into consideration, but also discard a long process of indoor analysis, and the analysis and the identification can be performed at a construction site, the method, the system and the device has stronger practical meaning.

Description

technical field [0001] The invention relates to the technical field of gas tunnel construction, in particular to a gas tunnel outburst evaluation method and implementation equipment thereof. Background technique [0002] Tunnel coal and gas outburst refers to the sudden ejection of coal and gas during excavation. This ejection produces a large impact force in a short period of time (minutes or even seconds), destroys the working face, and discharges a large amount of coal, rock flow and gas from the depth of the coal seam, which can destroy the roadway facilities and cause suffocation, burning and Accidents such as explosions and coal and rock flow burial. [0003] According to incomplete statistics, the total number of coal and gas outbursts in all countries in the world has reached more than 30,000 times, and the outburst with the largest intensity occurred on July 13, 1969 at the Gagarin Mine in the former Soviet Union's Donbas mining area. Coal and gas outbursts, the a...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 丁睿卿三惠
Owner CHINA RAILWAY HI TECH IND CORP LTD
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