Results 21 to 30 of about 1,142,888 (106)
Geofluids, Volume 2021, Issue 1, 2021., 2021 In order to explore the law of groundwater evolution, the water source connection between faults and aquifers and the main sources of mine water inrush in the deep mining area of Yangcheng Coal Mine in Jining City, 40 groups of hydrochemical samples were collected and analyzed by Piper Diagram and Durov Diagram.
Weitao Liu +7 more
wiley +1 more source
Location of Jiaojia Gold Mine.
, 2023 The problem of high stress conditions is a critical challenge for mining activity in deep metal mines, and the difficulty and economic cost of maintaining stope stability also increases.
Hong Zhou (29614) +7 more
core +1 more source
Gold King, San Juan County, Colorado: part 2 [PDF]
, 2022 Mine report no. 1445.Includes assay certificates and newspaper clippings.Typescript (carbon copy).Preliminary report of the Gold King Extension group of lode mines / J.H. Marks -- Report on Gold King Extension / J.H.
Noon, Bernard +3 more
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Geofluids, Volume 2019, Issue 1, 2019., 2019 The Xiejiagou deposit is a representative medium‐sized gold deposit in Jiaodong the Peninsula, which contains gold reserves of 37.5 t. The orebodies are hosted in the Linglong biotite granite with a zircon LA‐ICP‐MS U–Pb age of 160.5 ± 1.3 Ma (N = 15, MSWD = 1.2) and are characterized by disseminated‐ or stockwork‐style ores.
Peng Chai +4 more
wiley +1 more source
Report on the Pewabic Gold Company's tunnel project, Gilpin County, Colorado [PDF]
, 2022 Mine report no.
Alsdorf, Percy R.
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Optimization for U‐Shaped Steel Support in Deep Tunnels under Coupled Static‐Dynamic Loading
Advances in Civil Engineering, Volume 2019, Issue 1, 2019., 2019 With the effects of high geostress and intensive dynamic disturbances in deep mining, the stability and safety of tunnels are seriously affected. The optimization for U‐shaped steel support is of vital significance and can solve the problems of cost reduction and tunnel instability.
Yujun Zuo +7 more
wiley +1 more source
Mathematical Problems in Engineering, Volume 2018, Issue 1, 2018., 2018 Mining of ore body in the vicinity of a shaft has a significant influence on its stability. The in situ monitoring and numerical simulation are employed to analyze the effect of shaft pillar extraction at Xincheng Gold Mine. The XI# ore body is recently found around and beneath the shaft, and mining in this area may be detrimental to the shaft. Firstly,
Xige Liu +4 more
wiley +1 more source
Haile Gold Mine Records - Accession 182 - M83 (104-106) [PDF]
, 1978 The Haile Gold Mine Records consist of a report by the Bureau of the U.S. Department of the Interior describing the history and operation of the gold mine and weekly time and payroll records. The records are entirely photocopies.
Haile Gold Mine
core +1 more source
Research on the Safe Broadcasting of Television Program
MATEC Web of Conferences, 2016 The existing way of broadcasting and television monitoring has a lot of problems in China. On the basis of the signal technical indicators monitoring in the present broadcasting and television monitoring system, this paper further extends the function of
Song Jin Bao +2 more
doaj +1 more source
IEEE Access, 2017 To consider the uncertainty when determining the values of geo-mechanical parameters, interval values are used to indicate the physical and mechanical parameters of the rockmass.
Longjun Dong +3 more
doaj +1 more source