DIFFERENTIATED ASSESSMENT OF STABILITY OF EXPOSED ROCK SURFACES IN SUBLEVEL STOPING WITH BACKFILL

2021 ◽  
pp. 85-93
Author(s):  
V. I. Golik ◽  
Yu. Razorenov ◽  
V. S. Puzin ◽  
G. V. Stas
Keyword(s):  
Exposed Rock ◽  
Sublevel Stoping

Impact of Geological Heterogeneities on Induced-Seismicity in a Deep Sublevel Stoping Mine

2018 ◽  
Vol 176 (2) ◽  
pp. 697-717 ◽  
Author(s):  
Francesca De Santis ◽  
Isabelle Contrucci ◽  
Jannes Kinscher ◽  
Pascal Bernard ◽  
Vincent Renaud ◽  
...  
Keyword(s):  
Induced Seismicity ◽  
Sublevel Stoping

scholarly journals A New Method for Determination of Joint Roughness Coefficient of Rock Joints

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Shigui Du ◽  
Huicai Gao ◽  
Yunjin Hu ◽  
Man Huang ◽  
Hua Zhao
Keyword(s):  
Scale Effect ◽  
Fractal Model ◽  
Rock Joints ◽  
Effective Length ◽  
Roughness Coefficient ◽  
Joint Roughness Coefficient ◽  
Joint Roughness ◽  
Exposed Rock ◽  
Study Results

The joint roughness coefficient (JRC) of rock joints has the characteristic of scale effect. JRC measured on small-size exposed rock joints should be evaluated by JRC scale effect in order to obtain the JRC of actual-scale rock joints, since field rock joints are hardly fully exposed or well saved. Based on the validity analysis of JRC scale effect, concepts of rate of JRC scale effect and effective length of JRC scale effect were proposed. Then, a graphic method for determination of the effective length of JRC scale effect was established. Study results show that the JRC of actual-scale rock joints can be obtained through a fractal model of JRC scale effect according to the statistically measured results of the JRC of small-size partial exposed rock joints and by the selection of fractal dimension of JRC scale effect and the determination of effective length of JRC scale effect.

scholarly journals Phenotypic Characterization of some Actinobacteria and Fungi Isolated From Exposed rock surfaces in Southwestern Sinai, Egypt

2019 ◽  
Vol 36 (1) ◽  
pp. 66-99
Author(s):  
Noha Kamal ◽  
Shimaa Abdelsalam ◽  
Nareman Harpy ◽  
Maha Hewedy ◽  
Ibrahim El-Aassy
Keyword(s):  
Phenotypic Characterization ◽  
Exposed Rock ◽  
Southwestern Sinai

Geologically Old but Freshly Exposed Rock Fragments Encountered by Yutu‐2 Rover

2021 ◽  
Vol 126 (3) ◽  
Author(s):  
Sheng Gou ◽  
Zongyu Yue ◽  
Kaichang Di ◽  
Roberto Bugiolacchi ◽  
Wenhui Wan ◽  
...  
Keyword(s):  
Rock Fragments ◽  
Exposed Rock

scholarly journals Radiocarbon Dates from Jar and Coffin Burials of the Cardamom Mountains Reveal a Unique Mortuary Ritual in Cambodia's Late- to Post-Angkor Period (15th–17th Centuries AD)

Radiocarbon ◽  
2012 ◽  
Vol 54 (01) ◽  
pp. 1-22 ◽  
Author(s):  
Nancy Beavan ◽  
Sian Halcrow ◽  
Bruce McFadgen ◽  
Derek Hamilton ◽  
Brendan Buckley ◽  
...  
Keyword(s):  
Phnom Penh ◽  
Radiocarbon Dates ◽  
Mortuary Ritual ◽  
Island Southeast Asia ◽  
Calendar Date ◽  
Exposed Rock ◽  
15Th Century ◽  
Funerary Rituals ◽  
Time Period ◽  
Burial Rituals

We present the first radiocarbon dates from previously unrecorded, secondary burials in the Cardamom Mountains, Cambodia. The mortuary ritual incorporates nautical tradeware ceramic jars and log coffins fashioned from locally harvested trees as burial containers, which were set out on exposed rock ledges at 10 sites in the eastern Cardamom Massif. The suite of 2814C ages from 4 of these sites (Khnorng Sroal, Phnom Pel, Damnak Samdech, and Khnang Tathan) provides the first estimation of the overall time depth of the practice. The most reliable calendar date ranges from the 4 sites reveals a highland burial ritual unrelated to lowland Khmer culture that was practiced from cal AD 1395 to 1650. The time period is concurrent with the 15th century decline of Angkor as the capital of the Khmer kingdom and its demise about AD 1432, and the subsequent shift of power to new Mekong trade ports such as Phnom Penh, Udong, and Lovek. We discuss the Cardamom ritual relative to known funerary rituals of the pre- to post-Angkorian periods, and to similar exposed jar and coffin burial rituals in Mainland and Island Southeast Asia.

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