Results 121 to 130 of about 31,862 (304)

Pit north side

, 1980
The open-pit mine at Brenda ...

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Optimization of cut‐hole layout under high in situ stress based on numerical simulation and field tests

Deep Underground Science and Engineering, EarlyView.
This study investigates the blast‐induced rock damage patterns under different cut‐hole layouts and ground stress conditions through numerical simulations and field tests. The findings in this study provide valuable insights for similar underground engineering applications.
Junjie Zhao, Diyuan Li, P. G. Ranjith, Xinxin Lü, Yanliang Li, Xiaoli Su   +5 more
wiley   +1 more source

Failure characteristics and the energy criterion of rock with a through‐going joint under true‐triaxial unloading conditions: Insights from the DEM model

Deep Underground Science and Engineering, EarlyView.
The rock failure mode is significantly influenced by the contributing factors, such as the joint inclination, the initial confining pressure, and the unloading point. We found six typical rock failure modes after a large number of numerical tests. Abstract Excavation unloading damages rock masses, with preferential failure along geological defects in ...
Fei Liu, Changhui Liang, Sijia Liu, Yongjun Zhang, Luo Wang   +4 more
wiley   +1 more source

Groundwater control technology in open pit mines and its impact on stability of end-slopes

Meikuang Anquan
There are many rich water open-pit mines in China and the water inflow is large, if the mine groundwater or slope is not properly treated, it will face the dilemma of “water disaster, difficult strengthening of slope, and difficult mining of mines”. Open
Hai WANG, Chenguang WANG, Yan ZHANG, Honggang ZHANG, Xuanming HUANG, Hechao MIAO   +5 more
doaj   +1 more source

Chemical Composition and Toxicity of PM₁₀ and PM_0.1 Samples near Open-Pit Mines and Coal Power Stations. [PDF]

Life (Basel), 2022
Larionov A, Volobaev V, Zverev A, Vdovina E, Bach S, Schetnikova E, Leshukov T, Legoshchin K, Eremeeva G.   +8 more
europepmc   +1 more source

Open pit uranium mine Zee-2

, 2022
Date scanned: 2002-7-18.Figure 6 Open pit uranium mine Zee-2 showing massive failure along south wall. Outlined area "A" of figure 5. NASA Photograph 58-0007, May 1974.Held in the Russell L.

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Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

Advances in reconstruction of coal micro-nano structure and its application in water injection seepage mechanisms

Meitan kexue jishu
Coal seam water injection is a key technology for source control of hazards such as dust and gas. The complex pore-fracture structure within the coal mass directly determines the effectiveness of water injection, making it essential to clarify the ...
Gang WANG, Xuechang CHEN, Xiangyu CHU, Xiangjie QIN, Dongyang HAN, Hao CHEN, Yanming ZHANG   +6 more
doaj   +1 more source

A New Challenge: Detection of Small-Scale Falling Rocks on Transportation Roads in Open-Pit Mines. [PDF]

Sensors (Basel), 2021
Shi T, Zhong D, Bi L.
europepmc   +1 more source

Mississippi Group Mines, electric locomotive and cars

, 2022
Date scanned: 2002-6-20.USBM #64863; Electric locomotive, 65-ton, hauling 810 cu. ft. differential drop-door cars. Mississippi Group Mines, M. A. Hanna Company, Keewatin, Minnesota. - M. S. Petersen - October 1946.Held in the Russell L.
Petersen, Max S.
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