Quantitative Identification of the Water Resistance Capacity of Composite Strata in Mining Coal Seam Floors
In coal seam mining, the water resistance of the floor composite strata is the key to determining whether water disaster occurs or not and to formulating water control countermeasures. Taking the Pingdingshan Coalfield No. 8 mine and Shoushan mine as the research objects, the thickness ratio of plas...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
|
| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/3143024 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832560129103364096 |
|---|---|
| author | Xinyi Wang Fang Li Qi Wang Bo Chen Yu Zou Bo Zhang |
| author_facet | Xinyi Wang Fang Li Qi Wang Bo Chen Yu Zou Bo Zhang |
| author_sort | Xinyi Wang |
| collection | DOAJ |
| description | In coal seam mining, the water resistance of the floor composite strata is the key to determining whether water disaster occurs or not and to formulating water control countermeasures. Taking the Pingdingshan Coalfield No. 8 mine and Shoushan mine as the research objects, the thickness ratio of plastic brittle rock, core recovery rate, thickness of effective aquiclude, fault complexity, composite compressive strength, and equivalent water resistance coefficient were selected as the index factors. The comprehensive weight of each index factor was determined by using the entropy weight theory. The water resistance of the J16-17 coal seam floor composite rock in the study area was quantitatively evaluated using the fuzzy variable set mathematical model and was divided into five grades: extremely weak, weak, medium, strong, and very strong. The results show that the J16-17 coal floor composite rock layers with strong and very strong water resistance areas account for 23.64% of the total area, the medium areas account for 58.26%, and the weak and extremely weak areas account for 18.1%. These results provide support for the accurate assessment of water inrush hazards of a coal floor. |
| format | Article |
| id | doaj-art-a098160f16e64f0faf0918d5c8786437 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-a098160f16e64f0faf0918d5c87864372025-02-03T01:28:20ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/31430243143024Quantitative Identification of the Water Resistance Capacity of Composite Strata in Mining Coal Seam FloorsXinyi Wang0Fang Li1Qi Wang2Bo Chen3Yu Zou4Bo Zhang5Institute of Resources & Environment, Henan Polytechnic University, Jiaozuo 454000, ChinaInstitute of Resources & Environment, Henan Polytechnic University, Jiaozuo 454000, ChinaCollege of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaInstitute of Resources & Environment, Henan Polytechnic University, Jiaozuo 454000, ChinaJiangmen Branch Bureau of Hydrology, Guangdong Provincial Bureau of Hydrology, Jiangmen 529000, ChinaInstitute of Energy and Chemical Industry, China Pingmei Shenma Group, Pingdingshan 467000, ChinaIn coal seam mining, the water resistance of the floor composite strata is the key to determining whether water disaster occurs or not and to formulating water control countermeasures. Taking the Pingdingshan Coalfield No. 8 mine and Shoushan mine as the research objects, the thickness ratio of plastic brittle rock, core recovery rate, thickness of effective aquiclude, fault complexity, composite compressive strength, and equivalent water resistance coefficient were selected as the index factors. The comprehensive weight of each index factor was determined by using the entropy weight theory. The water resistance of the J16-17 coal seam floor composite rock in the study area was quantitatively evaluated using the fuzzy variable set mathematical model and was divided into five grades: extremely weak, weak, medium, strong, and very strong. The results show that the J16-17 coal floor composite rock layers with strong and very strong water resistance areas account for 23.64% of the total area, the medium areas account for 58.26%, and the weak and extremely weak areas account for 18.1%. These results provide support for the accurate assessment of water inrush hazards of a coal floor.http://dx.doi.org/10.1155/2021/3143024 |
| spellingShingle | Xinyi Wang Fang Li Qi Wang Bo Chen Yu Zou Bo Zhang Quantitative Identification of the Water Resistance Capacity of Composite Strata in Mining Coal Seam Floors Geofluids |
| title | Quantitative Identification of the Water Resistance Capacity of Composite Strata in Mining Coal Seam Floors |
| title_full | Quantitative Identification of the Water Resistance Capacity of Composite Strata in Mining Coal Seam Floors |
| title_fullStr | Quantitative Identification of the Water Resistance Capacity of Composite Strata in Mining Coal Seam Floors |
| title_full_unstemmed | Quantitative Identification of the Water Resistance Capacity of Composite Strata in Mining Coal Seam Floors |
| title_short | Quantitative Identification of the Water Resistance Capacity of Composite Strata in Mining Coal Seam Floors |
| title_sort | quantitative identification of the water resistance capacity of composite strata in mining coal seam floors |
| url | http://dx.doi.org/10.1155/2021/3143024 |
| work_keys_str_mv | AT xinyiwang quantitativeidentificationofthewaterresistancecapacityofcompositestratainminingcoalseamfloors AT fangli quantitativeidentificationofthewaterresistancecapacityofcompositestratainminingcoalseamfloors AT qiwang quantitativeidentificationofthewaterresistancecapacityofcompositestratainminingcoalseamfloors AT bochen quantitativeidentificationofthewaterresistancecapacityofcompositestratainminingcoalseamfloors AT yuzou quantitativeidentificationofthewaterresistancecapacityofcompositestratainminingcoalseamfloors AT bozhang quantitativeidentificationofthewaterresistancecapacityofcompositestratainminingcoalseamfloors |