Results 61 to 70 of about 507,235 (176)

Studies of methane inflow from longwall floor into the mine atmosphere

E3S Web of Conferences
The results of studies assessing methane inflow from longwall floor are presented. Based on mine observation data, the facts of an increase in local gas release from the carbon massif caused by an increase in the reservoir properties of rocks have been confirmed.
Kobylkin Alexander, Kubrin Sergey, Meshcheryakov Dmitry, Pozdeev Evgeny, Zakorshmennyi Iosif   +4 more
openaire   +2 more sources

Caribou mine reports

, 2022
Mine report no. 700.Includes illustrations, maps.Typescript.Includes a compilation of reports and maps on the Caribou mine ranging in date from 1913 to 1920.Reports sent to Geo. E. Collins -- Report no.

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Solving hydrogeological parameters of thick sandstone based on various analytical and numerical methods

Meitan kexue jishu
In the process of coal mining, accidents such as water inrush in mines can not only cause huge economic losses, but also seriously threaten the safety of workers. Hydrogeological parameters play an important role in calculating the amount of water inflow
Quanchao ZHOU, Ling LIU, Jisheng LI, Caiyun YIN   +3 more
doaj   +1 more source

Strategic research on mine water resource protection and utilization in coal mines of Yellow River Basin

Meitan xuebao
The ecological protection and high-quality development of Yellow River Basin constitute a major national strategy, however, water scarcity has become the greatest constraint to its development.
Qiang WU, Junlian GAO, Yifan ZENG, Yang CHENG, Yuxuan WANG   +4 more
doaj   +1 more source

Foreign Capital Inflow, Non-traded Intermediary, Urban Unemployment, and Welfare in a Small Open Economy: A Theoretical Analysis [PDF]

The paper attempts to analyse the implications of foreign capital inflow in a small open economy with a non-traded intermediary on the welfare and urban unemployment in a three-sector Harris-Todaro (1970) framework.
Sarbajit Chaudhuri
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Prediction of water inrush from coal seam floor based on machine learning with small sample data

Meikuang Anquan
With the development of computer technology, machine learning method has become an important technology for the prediction of water inrush in coal seam floor.
Chenxi LI, Haifeng LU
doaj   +1 more source

Sallie Barber mine, Summit County, Colorado

, 2022
Mine report no. 1504.Sallie Barber mine / D.F. Reed -- Report on the Sallie Barber mine, Breckenridge, Colo. / W. Gardner -- Sallie Barber mine / W.H. Brehmer -- The Sallie Barber mine / Puttner and Knappe -- Sallie Barber mine, Summit County, Colorado /
Brehmer, W. H., Reed, D. F., McClave, J. M. (James M.)   +2 more
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Research on distribution characteristics and water filling modes of mine water inflow in western mining areas of China

Meitan kexue jishu
The characteristics of Chinese energy endowment determine that coal is the main energy source for long-term stability in the future. With the depletion of coal resources in the eastern region, the northwest coal rich area has become the core area for ...
Jian YANG, Yue PU
doaj   +1 more source

Mine tailings pollution, Colorado

, 2023
Mine report no. 1692.Typescript (carbon copy).Some facts about pollution May 26, 1936 -- Letter of correspondence regarding the introduction of a bill concerning the impounding of mine tailings, dated February 20 ...

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Dynamic prediction method and application of mine water inflow based on mining rock mass seepage theory

Meitan xuebao
Accurate prediction of mine water inflow is the core issue for water hazard prevention and control and protective water resource mining in coal mines. During high-intensity coal extraction, the dynamic evolution of permeability in the mining rock mass ...
Feng DU, Pengtao LU, Zhenhua LI, Dan MA, Wenwu DOU, Xiang DING, Wenqiang WANG, Yufeng HUANG   +7 more
doaj   +1 more source