Zobrazeno 1 - 10
of 180
pro vyhledávání: '"Collapse column"'
Publikováno v:
Meikuang Anquan, Vol 55, Iss 12, Pp 206-213 (2024)
With the gradual depletion of shallow coal resources, the most serious threat restricting the safe mining of Group A coal seams in Huainan Mining Area has changed from gas to floor confined water. According to the production and geological conditions
Externí odkaz:
https://doaj.org/article/06de73a662dd48108385b741b2320257
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract The collapse column may result in failure of the surrounding rock during roadway excavation. It is of considerable importance to elucidate the failure characteristics and develop the corresponding control technologies for the surrounding roc
Externí odkaz:
https://doaj.org/article/19df029d1acf4c1d8e1854c0142596bf
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract In order to reveal the disastrous mechanism of seepage instability of karst collapse column considering variable mass effect, a variable mass fluid–solid coupling mechanical model of water inrush is established, by considering the random d
Externí odkaz:
https://doaj.org/article/a42ad02d6ca340c4ad47956b01dd8b41
Autor:
Wu Yongjiang, Cao Zhengzheng, Li Zhenhua, Du Feng, Wang Wenqiang, Zhai Minglei, Hong Zijie, Xue Yi
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract To obtain the seepage evolution rule and water inrush mechanism of the collapse column, a multi-field coupled mechanical model for water inrush disasters caused by the collapse column is established in this paper, on the basis of the specifi
Externí odkaz:
https://doaj.org/article/10de06b8e94e413a96a0560741256894
Publikováno v:
Water Resources and Industry, Vol 31, Iss , Pp 100250- (2024)
Hidden collapse column associated with high pressure dynamic water is a main cause of major water inrush accidents in North China type coal fields. Taking the structural abnormality area discovered in 11603 working face of Daizhuang Coal Mine as an e
Externí odkaz:
https://doaj.org/article/81f570c99df34516833228dfab87ab44
The law of water inrush disaster of collapse column considering the influence of fillings activation
Publikováno v:
Meikuang Anquan, Vol 54, Iss 5, Pp 113-120 (2023)
In order to study the water-inrush disaster law of collapse column under the influence of interstitial material activation, a return air roadway of Shenhua Group was taken as the research object. The strength reduction and permeability mutation cause
Externí odkaz:
https://doaj.org/article/114eb2e81b1d4ea48330287dc136ebba
Publikováno v:
Meikuang Anquan, Vol 54, Iss 2, Pp 174-180 (2023)
In order to overcome the problem of multiple solutions and uncertainties in the identification of collapsed columns with a single seismic attribute and the problem of identification accuracy shift caused by unbalanced sample data, a binary classifica
Externí odkaz:
https://doaj.org/article/72d1ee5e75064579ab82caada336b776
Publikováno v:
Meikuang Anquan, Vol 54, Iss 2, Pp 181-188 (2023)
Collapse columns which can usually destroy the integrity of strata are widespread in the Carboniferous and Permian coalfields for North China type. The incubation and development process of collapse column could change the mechanical property and aco
Externí odkaz:
https://doaj.org/article/32a087c47b284767ad02f1addee7aaef
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