Results 141 to 150 of about 8,725 (226)

Characteristics of overburden failure and evolution of fractures in fully mechanized top coal mining face. [PDF]

Sci Rep
Wang X, Liu F.
europepmc   +1 more source

Structural model of hard overburden shell in thick coal seam and its application. [PDF]

Sci Rep
Fu X, Zeng L, Rong H, Zhang H, Liu T, Song J.   +5 more
europepmc   +1 more source

Research on the active sealing and promoting extraction technology of high-gas mine working face return air corner gas. [PDF]

Sci Rep
Sun B, Gong X, Fan X, Cheng X, Yang P, Xiao L, Cheng C, Ma X.   +7 more
europepmc   +1 more source

Research on the predicted height of water-conducting fracture zones based on the BO-RFR model and SHAP analysis. [PDF]

Sci Rep
Qiu M, Wen Y, Teng C, Shi M.
europepmc   +1 more source

Patterns and security technologies for co-extraction of coal and gas in deep mines without entry pillars [PDF]

, 2015

core   +1 more source

Catch Me If You Can: Education and Catch-up in the Industrial Revolution [PDF]

Existing evidence, mostly from British textile industries, rejects the importance of formal education for the Industrial Revolution. We provide new evidence from Prussia, a technological follower, where early-19th-century institutional reforms created ...
Erik Hornung, Ludger Woessmann, Sascha O. Becker   +2 more
core  

Study on crack propagation law of overlying strata in the process of small coal pillar mining in inclined extra-thick coal seam. [PDF]

Sci Rep
Lu W, Zhao P, Jin Q, Jin H, Li S, Bai J.
europepmc   +1 more source

Influence mechanism of cutting turbulent wind on coal dust lateral dispersal in large mining height fully mechanized mining face

Meikuang Anquan
The large size shearer drum in the large mining height working face generates more obvious turbulent wind in cutting the coal body, which causes the local wind speed of the working face to change, and the horizontal diffusion of dust particles to the sidewalk area.
Zhixin WANG, Liren LIU, Xiaotao ZHANG, Shengtian HE   +3 more
openaire   +1 more source

Study on Air Leakage Law and Coal Spontaneous Combustion Danger Area in Goaf of Ultra-Long Fully Mechanized Mining Faces with Large Mining Height. [PDF]

ACS Omega
Yuan G, Ma L, Sun J, Zhang P, Chen R, Pei G, Ma W.   +6 more
europepmc   +1 more source

Theory and practice of integrated coal production and gas extraction [PDF]

, 2015
Liang Yuan
core   +1 more source