Results 41 to 50 of about 46,511 (232)

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

open access: yesDeep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang   +5 more
wiley   +1 more source

Spatial and Temporal Distribution of Groundwater in Open-Pit Coal Mining: A Case Study from Baorixile Coal Mine, Hailaer Basin, China

open access: yesGeofluids, 2022
Groundwater distribution influenced by mining activities is hard to be tracked due to the lack of accurate and real-time monitoring data. To address the groundwater dynamic change data under the mining conditions of open-pit coal mines, a three ...
Wenfeng Du   +5 more
doaj   +1 more source

Mining revival [PDF]

open access: yes, 2010
In relation to its size the United Kingdom (UK) is remarkably well-endowed with mineral resources as a result of its complex geological history. Their extraction and use have played an important role in the development of the UK economy over many years ...
Lusty, Paul
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Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

open access: yesDeep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang   +4 more
wiley   +1 more source

Research on the intelligent capability maturity and evolution logic of open-pit coal mines

open access: yesGong-kuang zidonghua
Existing studies on the construction of intelligent open-pit coal mines have primarily focused on areas such as overall planning, basic architecture, and the evaluation of the completeness of construction content. However, there has been limited research
WANG Zhongxin   +9 more
doaj   +1 more source

Regularity of particle velocity decrease with scaled distance for rockbursts and shot holes [PDF]

open access: yesActa Montanistica Slovaca, 2015
The paper is intended as an analysis of particle velocity generated during rockbursts in deep coal mines in the Ostrava-Karviná Coal Basin (OKCB), which are recorded at five underground seismic stations.
Karel Holub, Jana Rušajová
doaj   +1 more source

Effect of Coalbed Methane Well Fracturing on Slope Stability of Open‐Pit Coal Mine: A Case Study of Shengli East No. 2 Open‐Pit Coal Mine [PDF]

open access: yesAdvances in Civil Engineering, 2020
The impact of hydraulic fracture from CBM well fracturing on slope stability of the Shengli East No. 2 open‐pit coal mine is analyzed by numerical simulation and limit equilibrium methods. The interference effect of coalbed methane (CBM) well fracturing on slope stability of the open‐pit coal mine promotes the coordinated development of CBM, and open ...
Qingzhong Zhu   +7 more
openaire   +2 more sources

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

open access: yesDeep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu   +4 more
wiley   +1 more source

Management plan of geological hazard threats in the fault zone of adjacent open-pit mines

open access: yesMeitan kexue jishu
In the development of large-scale open-pit coal fields in China, there are often several Coal companies entering the same coal field, and each Coal company is a main body of development, mining coal resources in the state-allocated strip area, and ...
Guangwei LIU   +5 more
doaj   +1 more source

Coal mining areas: environmental issues and solutions (on the example of Kuzbass) [PDF]

open access: yes, 2015
Rozdział z: Functioning of the Local Production Systems in Central and Eastern European Countries and Siberia. Case Studies and Comparative Studies, ed. Mariusz E.
Tsvelodub, Yuliya
core  

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