Results 101 to 110 of about 6,281 (245)
Longwall Mining Stability in Take-Off Phase [PDF]
Mechanised longwall mining is one of the more commonly employed exploitation methods in underground mines in the north of Spain as well as in the rest of the world. It is continuously changing and evolving, with new techniques, technology, equipment, and
Alcalde Gonzalo, José +4 more
core +3 more sources
Failure Mechanism of Asymmetric Large Deformations Under Repeated Mining in Roadways
Principal stress‐evolution diagram at different advance positions of 42205 working face. ABSTRACT To address the challenge of controlling severe asymmetrical deformation in roadways subjected to repeated mining, this study (i.e., based on the engineering context of the Buertai Coal Mine) investigated the characteristics of the regional stress field in ...
Ai‐Rong Wang +3 more
wiley +1 more source
Influence Mechanism of Main Roof Height on Surrounding Rock Stability of Gob-Side Entry Driving [PDF]
The main roof directly affects the stress environment and the control effect of the surrounding rock of gob-side entry driving. A mechanical model of the surrounding rock of gob-side entry driving was established to analyze the influence mechanism of ...
Gao-feng Chen +5 more
core +2 more sources
Study on Failure Law of Mining Process of Narrow Coal Pillars in Fully Mechanized Caving Roadway [PDF]
In order to determine the damage law of narrow coal pillars in the roadway along the goaf, taking the 4-5(06) working face of a mine in Xinjiang as the research object, the 3D finite difference software FLAC3D is used to analyse the stress and displacement distribution characteristics of narrow coal pillars in the mining process.
Ren Haifeng, Zhao Xuewen, Cao Peng
openaire +2 more sources
This study assessed the industrial hemp value web resilience in the Swabian Alb, Southern Germany, where regional implementation remains limited despite hemp's bioeconomy potential. Using an indicator framework and stakeholder interviews, the research found the small, fluctuating cultivation area (e.g., 25 ha in 2024) focuses on hemp seed valorisation;
Lena‐Sophie Loew, Moritz von Cossel
wiley +1 more source
To address the challenges of surrounding rock control caused by complex stress sources and intense ground pressure in gob‐side entry driving (GED) with narrow coal pillars under extra‐thick coal seams, this study takes the 10 m‐thick coal seam 8204 panel of Tashan Coal Mine as the engineering background.
Dongjie Jiang +6 more
wiley +1 more source
Survey on roof movement of the gangue backfill working face [PDF]
This paper studied the roof movement characteristics of LW1302N-1 with gangue backfill mining in Shandong Xinjulong Company of China. The monitoring of roof subsidence of the gob and bearing stress of filled gangue was carried out by using the roof ...
Guangjing Sun, Jinhai Liu, Tao Feng
core +2 more sources
Research of ground cracks caused by fully-mechanized sublevel caving mining based on field survey
AbstractFully-mechanized sublevel caving mining have been widely used due to its efficiency, however, the accompanied breakage such as ground cracks caused by which is much bigger than traditional mining methods. The study of ground cracks caused by fully-mechanized sublevel caving mining can give supports to the prevention or repairation of them ...
Kan, Wu +5 more
openaire +1 more source
Research Progress and Typical Cases of Deep Mines Backfill Technology in China
With the increasing depletion of shallow mineral resources and the growing demand for metals, deep mining has become a strategic focus for China. However, deep mining operations face a series of complex challenges, including high ground stress, elevated geothermal gradients, and severe rockburst hazards.
Shuai Li +5 more
wiley +1 more source
English for Study and Work: Coursebook in 4 books. Book 2 Obtaining and Processing Information for Specific Purposes [PDF]
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. +15 more
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