Results 121 to 130 of about 26,903 (228)

Geoelectric field response characteristics analysis of floor roadway surrounding rock fracture caused due to coal seam mining. [PDF]

Sci Rep, 2021
Ou Y, Zhang P, Fu M, Hu X, Wu R, Liu C, Sun B, Xu S, Li S, Tan L.   +9 more
europepmc   +1 more source

Mechanical Mechanism of Surrounding Rock Failure and Stability Control for Gob‐Side Entry Driving Near an Advancing Working Face

Energy Science & Engineering
Addressing the challenges of surrounding rock control in gob‐side entry driving near an advancing working face affected by adjacent working faces and gobs, taking 5104 return airway of No.1 well in Checun Coal Mine as the background, using theoretical ...
Delong Cui, Yujiang Zhang, Shuai Zhang, Xiangye Wu, Qian Wang, Bingyuan Cui, Defu Zhu   +6 more
doaj   +1 more source

Evaluating the Potential Effects of Deicing Salts on Roadside Carbon Sequestration [PDF]

, 2019
This project sought to document patterns of road deicing salts and the effects of these salts on the amount of carbon being sequestered passively along Montana Department of Transportation roads; it was designed collaboratively with a related roadside ...
Ament, Rob, Fay, Laura, Hartshorn, Tony, Powell, Scott   +3 more
core  

Failure characteristics and control technology of surrounding rock during roadway passing collapse column

Scientific Reports
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 rock. A discrete fracture mesh (DFN) and a strain-softening constitutive model are employed to simulate the ...
Ce Jia, Chaojun Fan, Sheng Li, Xiaoshuai Liu, Mingkun Luo   +4 more
openaire   +3 more sources

English for Study and Work: Coursebook in 4 books. Book 2 Obtaining and Processing Information for Specific Purposes [PDF]

, 2015
Подано всі види діяльності студентів з вивчення англійської мови, спрямовані на розвиток мовної поведінки, необхідної для ефективного спілкування в академічному та професійному середовищах.
Зуенок, И. И., Зуенок, Ирина Ивановна, Зуєнок, І. І., Зуєнок, Ірина Іванівна, Кострицкая, С. И., Кострицкая, Светлана Ивановна, Кострицька, С. І., Кострицька, Світлана Іванівна, Поперечна, Н. В., Поперечна, Неллі Василівна, Поперечная, Н. В., Поперечная, Нелли Васильевна, Швец, Е. Д., Швец, Елена Дмитриевна, Швець, О. Д., Швець, Олена Дмитрівна   +15 more
core  

Optimized Layout and Roadway support planning with integrated intelligent software [PDF]

, 1996
With declining ore grades, exhaustion of near surface reserves and rising labour costs the underground coal and metal mining industry in the European Union requires efficient planning tools that will improve its performance since mechanisation has almost
Josien, Jean-Pierre, Kammer, W., Kouniali, Samy, Piguet, Jack-Pierre, Sbierczik, G.   +4 more
core   +1 more source

Numerical Simulation Study on the Deformation Patterns of Surrounding Rock in Deeply Buried Roadways under Seepage Action

Applied Sciences
To reveal the deformation patterns of the surrounding rock in deeply buried straight-wall arch-shaped roadways under seepage action, this study, based on an FLAC3D numerical simulation and classic elastoplastic theory, investigates the influences of ...
Xuebin Xie, Liang Li
doaj   +1 more source

The contribution of conveyed coal to mine heat problems [PDF]

, 1981
As coal mines get deeper, more mechanised and more productive the heat load on the ventilation system increases. In certain cases to the point where serious environmental problems may arise.
Watson, Andrew Gordon
core  

Effect of bolting on roadway support in extremely weak rock [PDF]

, 2016

core   +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