Development of an Optimum Forepole Spacing (OFS) determination method for tunnelling in silty clay with a case study

2018 ◽  
Vol 74 ◽  
pp. 20-32 ◽  
Author(s):  
Zhechao Wang ◽  
Wei Li ◽  
Shucai Li ◽  
Wenge Qiu ◽  
Wantao Ding
2020 ◽  
Vol 14 (2) ◽  
pp. 501-517
Author(s):  
Mohammad Abubakar Naveed ◽  
Zulfiqar Ali ◽  
Abdul Qadir ◽  
Umar Naveed Latif ◽  
Saad Hamid ◽  
...  

2018 ◽  
Vol 10 (8) ◽  
pp. 1190-1197
Author(s):  
Xiang Xia ◽  
Chong Yu ◽  
Bo Liu ◽  
Yaqun Liu

2014 ◽  
Vol 635-637 ◽  
pp. 1841-1846
Author(s):  
Ling Hua Zhou ◽  
Xiang Hong Xu ◽  
De Zhong Yu

This paper presents a methodology for diagnostics of fixture failures in multistation assembly processes. Diagnosis matrix equation is established by state space equation and measurement equation, which study the conditions of deviation source diagnosis. The determination method of deviation source diagnosis is obtained. 3-D scanner is used to measure the key data. A case study illustrates the proposed method.


2019 ◽  
Author(s):  
ARTUR CERVEIRA BERTONE ◽  
MÁRIAN DA COSTA ROHN ◽  
WESLEY LEONEL DE SOUZA ◽  
ELOY KAVISKI ◽  
CANDICE SCHAUFFERT GARCIA ◽  
...  

Author(s):  
Ildar Fayzullin ◽  
Lydiya Kuptsova ◽  
Vadim Mukhametdinov

The article analyzes the ceramics of the Timber culture, recovered from a kurgan cemetery near the village of Tverdilovo (excavated in 2017 in the Western Orenburg region). Under embankment of kurgan 1, 30 vessels were found in 21 burials, made in a narrow chronological interval. When considering these vessels according to one methodological system, which includes morphological and technical and technological analysis, the peculiarities of the production of pottery were highlighted both for a single group of the population and for the region as a whole. The analysis of the technological traditions of ceramics production from the Tverditovo kurgan cemetery shows that the population that left these ceramics was not homogeneous. There are two different traditions even at the stage of selection of plastic soft raw materials: one of them used silty clay for making dishes, the other applied natural clay. So, it is difficult to explain an isolated case of using sludge and low-grade ferrum clay. Using comparative analysis we can assume that the nearest burial monument according to its ceramics products is the Bogolubovskiy kurgan cemetery where we also can find silty and natural clay and the receipt of molding mass as “clay+ chamotte+ organic materials”. Pottery traditions of the population that left the presented vessels were heterogeneous, which is recorded both in terms of morphological and technological characteristics. A similar picture is typical for other settlement and burial sites in the Orenburg Cis-Urals. The monument was dominated by the pottery traditions of the Timber culture with a slight influence of the Alakul elements.


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