Zobrazeno 1 - 10
of 8 928
pro vyhledávání: '"roadway"'
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:
Taiyuan Ligong Daxue xuebao, Vol 55, Iss 6, Pp 989-999 (2024)
[Purposes] This research is conducted to exploret the roof movement law of double roadway arrangement in thick coal seam and the abutment pressure distribution mechanism of surrounding rock. [Methods] The roof cuttings of single roadway in belt chann
Externí odkaz:
https://doaj.org/article/53c38fa004a44b70b9900cd38c5c538b
Publikováno v:
Taiyuan Ligong Daxue xuebao, Vol 55, Iss 6, Pp 1031-1044 (2024)
[Purposes] This article aims to solve the stability problem of the roadway after using concrete flexible mold filling technology to leave the roadway along the goaf in the working face. To solve the problem of roadway stability after retaining the ro
Externí odkaz:
https://doaj.org/article/7230d72e926b48fb9fed56b865868767
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract Deep close distance coal seam mining is affected by the goaf of upper coal and remaining coal pillar, and the roadway of lower coal is difficult to maintain stability. By means of theoretical analysis, physical simulation test and numerical
Externí odkaz:
https://doaj.org/article/0446aeb04c004000af8fc72524eac2fa
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 11, Pp 5078-5091 (2024)
Abstract To further investigate the propagation characteristics of shock waves and flame waves in H‐type tunnel gas explosions, numerical simulation studies were conducted on a dual‐source gas explosion model using Fluent software. Three distinct
Externí odkaz:
https://doaj.org/article/a3d504794ad8442997506d9c4725a93a
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 11, Pp 5316-5327 (2024)
ABSTRACT The severe deformation of the surrounding rock of the coal floor in Shanghaimiao mining area is affecting the safe, efficient production of mine wells in this region. In this study, the heave mechanism and control of the roadway floor were i
Externí odkaz:
https://doaj.org/article/af9f08dbaf5241fa942c49efac9e659d
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract Effective and safe support in soft rock roadways remains a critical challenge in underground coal mining due to the extreme weakness of the rocks and their susceptibility to weathering and water invasion. This paper examines the tailgate of
Externí odkaz:
https://doaj.org/article/159c4375752148fd8407bf9496be7329