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Method for evaluating hazard of gas tunnel and device for implementing same

An evaluation method and risk technology, applied in the field of gas tunnel risk evaluation method and its implementation equipment, can solve the problems that the index system has not been established and has not been fully developed

Inactive Publication Date: 2009-09-02
CHINA RAILWAY HI TECH IND CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on the safety detection of gas tunnels has not yet been carried out, or has not been fully carried out, especially the index system in this regard has not yet been established.

Method used

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  • Method for evaluating hazard of gas tunnel and device for implementing same
  • Method for evaluating hazard of gas tunnel and device for implementing same
  • Method for evaluating hazard of gas tunnel and device for implementing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the gas tunnel hazard index data is evaluated at the construction site. The stratum lithology (surrounding rock permeability) measured in the gas tunnel work area is shale; the measured geological structure is a closed coal seam structure; 1.0; the measured gas pressure is 0.35; after investigation, the construction team has certain experience; the technical level of the construction team is medium; the engineering measures adopted by the construction team are general ventilation; Hazard index data (4) is sequentially input to the data processor (3) and the hazard index evaluation blank table read from the form memory (2) image 3 In the process, when the data (4) is input, compare and classify the input data with the indicators in the gas tunnel hazard index classification table memory (1), and assign values, and at the same time, assign the results of the classification and assignment to generate index evaluations. class statistics Figur...

Embodiment 3

[0035] Such as figure 1 As shown, the gas tunnel hazard index data is evaluated at the construction site. The formation lithology (surrounding rock permeability) measured in the gas tunnel work area is silt; the measured geological structure has nothing to do with the coal seam; the measured number of times of coal removal is 2 times; the measured absolute gas emission is 0.4; the measured gas concentration is 0.2; The measured gas pressure is 0.1; after investigation, the construction team has experience; the construction team has a high technical level; the engineering measure adopted by the construction team is to strengthen ventilation; the management system of the construction team is relatively loose. The above-measured salient risk index data (4) are sequentially input into the risk index evaluation blank table that the data processor (3) reads from the form memory (2) image 3 In the process, when the data (4) is input, compare and classify the input data with the ind...

Embodiment 4

[0037] Such as figure 1 As shown, the gas tunnel hazard index data is evaluated at the construction site. The stratum lithology (surrounding rock permeability) measured in the gas tunnel work area is mudstone; the measured geological structure is a closed coal seam structure; the measured number of coal uncovering is 10 times; the measured absolute gas emission is 2.5; the measured gas concentration is 1.5 The measured gas pressure is 0.7; after investigation, the construction team has only certain experience; the construction team has a medium technical level; the construction team has not taken engineering measures; The above-measured salient risk index data (4) are sequentially input into the risk index evaluation blank table that the data processor (3) reads from the form memory (2) image 3 In the process, when the data (4) is input, compare and classify the input data with the indicators in the gas tunnel hazard index classification table memory (1), and assign values, ...

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Abstract

The invention discloses a method for evaluating the hazard of a gas tunnel, an evaluation 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 hazard of the gas tunnel. The method, the system and the device are characterized by establishing a gas tunnel hazard index classification table memory, a security level corresponding table memory and a table memory, and inputting the following hazard indexes on site: stratum lithology (R1), geological structure (R2), coal-openning times (R3), absolute gas discharge amount (R4), gas density (R5), gas pressure (R6), gas tunnel construction experience (R7) of a construction team, the technical level of the construction team (R8), engineering measures (R9) and the evaluation value of a management control system (R10), wherein the hazard indexes are analyzed and processed to obtain an evaluation result through which engineering measures for dealing with the hazards can be made earlier, thus the method, the system and the device have important meanings on ensuring the construction safety and saving the cost for after-treatments of an accident.

Description

technical field [0001] The invention relates to the technical field of gas tunnel construction, in particular to a gas tunnel risk assessment method and implementation equipment thereof. Background technique [0002] With the increase of national investment in infrastructure construction and the implementation of the western development strategy, the construction of high-grade highways and railways has extended from the coastal areas to the southwest and northwest mountainous areas. There is a remarkable feature in the construction of expressways and railways in these areas , that is, more road tunnels are built, and gas tunnels passing through coal-measure strata and high-pressure coal seams are becoming more and more common. With the increase in the construction of highway tunnels in coal-measure strata in recent years, safety accidents have also increased accordingly. There are two technical difficulties in building tunnels in coal-measure strata: one is that most coal-m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 卿三惠丁睿
Owner CHINA RAILWAY HI TECH IND CORP LTD
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