Modified explosive diagram for determining gas-mixture explosibility
Determination of mine gas explosibility is definitely a significant work for mine safety especially when any mine rescue strategies are under planning or implementing. In detail, its importance can be well understood by the following two aspects: First, if a coal mine's production is under the...
| Main Authors: | , |
|---|---|
| Format: | Journal Article |
| Published: |
2013
|
| Online Access: | http://hdl.handle.net/20.500.11937/39384 |
| _version_ | 1848755577581207552 |
|---|---|
| author | Cheng, Jianwei Luo, Y. |
| author_facet | Cheng, Jianwei Luo, Y. |
| author_sort | Cheng, Jianwei |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Determination of mine gas explosibility is definitely a significant work for mine safety especially when any mine rescue strategies are under planning or implementing. In detail, its importance can be well understood by the following two aspects: First, if a coal mine's production is under the normal conditions, the underground mine atmosphere must be monitored as a timely matter and its explosibility should also be determined shortly due to the continuous emission of methane or other combustible gases. Thus, the critical time which means a time period that combustible gases could build up to reach the lower flammable limit and then pass the upper flammable limit can be effectively watched and controlled. Second, when facing a mine rescue work or mitigating a hazard of mine accidents (gas explosion, coal fire, etc.), the explosibility determination is also very critical for miners' lives. In this paper, a widely used mine gas explosibility determination method, the Coward diagram, is going to be modified to improve its accuracy. The improvements made in this research effort include: (1) expanding the original Coward diagram; (2) correcting flammable limits; (3) redefining the nose limit for each combustible gas; (4) developing an equation to predict the excess amount of inert gas for individual combustible gas. Finally, the flowchart of the modified Coward explosibility diagram method is listed. By a cross-verification study, it shows that the modified Coward method has better accuracy and reliability and could be applied in practices. © 2013 Elsevier Ltd. |
| first_indexed | 2025-11-14T08:58:31Z |
| format | Journal Article |
| id | curtin-20.500.11937-39384 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:58:31Z |
| publishDate | 2013 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-393842017-09-13T14:24:48Z Modified explosive diagram for determining gas-mixture explosibility Cheng, Jianwei Luo, Y. Determination of mine gas explosibility is definitely a significant work for mine safety especially when any mine rescue strategies are under planning or implementing. In detail, its importance can be well understood by the following two aspects: First, if a coal mine's production is under the normal conditions, the underground mine atmosphere must be monitored as a timely matter and its explosibility should also be determined shortly due to the continuous emission of methane or other combustible gases. Thus, the critical time which means a time period that combustible gases could build up to reach the lower flammable limit and then pass the upper flammable limit can be effectively watched and controlled. Second, when facing a mine rescue work or mitigating a hazard of mine accidents (gas explosion, coal fire, etc.), the explosibility determination is also very critical for miners' lives. In this paper, a widely used mine gas explosibility determination method, the Coward diagram, is going to be modified to improve its accuracy. The improvements made in this research effort include: (1) expanding the original Coward diagram; (2) correcting flammable limits; (3) redefining the nose limit for each combustible gas; (4) developing an equation to predict the excess amount of inert gas for individual combustible gas. Finally, the flowchart of the modified Coward explosibility diagram method is listed. By a cross-verification study, it shows that the modified Coward method has better accuracy and reliability and could be applied in practices. © 2013 Elsevier Ltd. 2013 Journal Article http://hdl.handle.net/20.500.11937/39384 10.1016/j.jlp.2013.02.007 restricted |
| spellingShingle | Cheng, Jianwei Luo, Y. Modified explosive diagram for determining gas-mixture explosibility |
| title | Modified explosive diagram for determining gas-mixture explosibility |
| title_full | Modified explosive diagram for determining gas-mixture explosibility |
| title_fullStr | Modified explosive diagram for determining gas-mixture explosibility |
| title_full_unstemmed | Modified explosive diagram for determining gas-mixture explosibility |
| title_short | Modified explosive diagram for determining gas-mixture explosibility |
| title_sort | modified explosive diagram for determining gas-mixture explosibility |
| url | http://hdl.handle.net/20.500.11937/39384 |