Results 251 to 260 of about 1,016,619 (289)

Deformation mechanism and mechanical response of coal mine roadway roof in the unsupported area during rapid tunneling. [PDF]

Sci Rep
Wang S, Yang S, Guo W, Ma L, Yu Z, Wang P.   +5 more
europepmc   +1 more source

Roadway roof shear slip movement mechanism induced by the strong dynamic pressure while ultra-thick coal seam mining. [PDF]

Sci Rep
Liu C, Wang F, Zuo Y, Wang C, Gao C, Lu Y, Sun W, Hao W, Tang T, Zhang Y.   +9 more
europepmc   +1 more source

Analysis and control of gas blowout accidents in working faces beneath thick magmatic rock. [PDF]

Sci Rep
Ma S, Su Y, Wang X, Guo B, Zhang S, Li H.   +5 more
europepmc   +1 more source

Disaster-causing mechanism and control technology of interlayer rock breakage in gently inclined close distance coal seams mining. [PDF]

Sci Rep
Yuchi X, Du X, Shu P, Yu L, Lei W, Yang W, Zhang Z.   +6 more
europepmc   +1 more source

Research and application of pre-excavated double withdrawal channel technology without coal pillar abandonment. [PDF]

Sci Rep
Zhang J, Shi Z, Wu C, Xiao F, Shi L.
europepmc   +1 more source

Case Study on Pre-Splitting Blasting Reasonable Parameters of Goaf-Side Entry Retained by Roof Cutting for Hard Main Roof

Processes, 2023
The key parameters of pressure relief pre-splitting blasting technology (PRPBT) contribute to the implementation effect of goaf-side entry by roof cutting (GSERC).
Hengzhong Zhu
exaly   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

The mechanism and prevention of rockburst induced by the instability of the composite hard-roof coal structure and roof fractures

Engineering Fracture Mechanics
Junwen Zhang, Xukai Dong
exaly   +2 more sources

Study on the Collapse Mechanism of the Hard Roof Rocks

Advanced Materials Research, 2012
The collapse of the hard roof rocks was characterized by its sudden and entire breakage and falling during the mining of the shallow-thick coal seams in Datong district. In this paper, structural mechanics methods was used to study the collapse mechanism of the hard roof rocks.
Qing Guo Huang, Feng Gao, Jun Zhao
openaire   +1 more source

Determination and Engineering Practice of Unsupported Roof Distance for Rapid Excavation of Roadway with Thick and Hard Basic Roof

Geotechnical and Geological Engineering, 2021
In order to determine the reasonable empty roof distance during roadway excavation, a mechanical model of the direct roof rock beam was established, and the relationship between the direct roof tensile stress and the empty roof distance was obtained. According to the criterion of roof stability, that is, the tensile stress of the roof does not exceed ...
Sen Yang, Xinzhu Hua, Peng Yang, Xiao Liu   +3 more
openaire   +1 more source

Failure of the hard roof and the impact on coal burst occurrence

2022
A coal burst is one of the fiercest and most dynamic, instability events in underground longwall mining. The coupled static and dynamic loadings are recognised as one of the main factors that lead to coal bursts. To qualify the static and dynamic loadings, it is essential to understand the mining-induced mechanical behaviour of strata which includes ...
openaire   +2 more sources