نتایج جستجو برای: difficult geological conditions

تعداد نتایج: 1087328  

Journal: :The Institution of Civil Engineers Engineering Division Papers 1951

Journal: :iranian journal of science and technology (sciences) 2015
j. chuan zhang

the main purpose of this research paper is to compare qiujiahe formation (є1q) and longmaxi formation (s1ln) in north sichuan basin where shale gas exploration has not been fully researched, and hence represents the possibility of shale gas concentration under the complex geological conditions. based on valid laboratorial analysis, there are optimistic prospects for є1q and s1ln of research are...

2011
Polychronis Dilaveris Skevos Sideris Sofia Vaina Konstantinos Gatzoulis Christodoulos Stefanadis

Increased vascular calcification and tortuosity are rather common in end-stage renal failure patients who are on hemodialysis. It renders manipulation of catheters and performance of percutaneous transluminal interventions more difficult than expected. Such vascular alterations may be evident in large veins and pose significant difficulties in placement of pacing leads as shown in our case. To ...

Journal: :journal of mining and environment 2012
omid frough seyed rahman torabi majid tajik

successful application of a tbm in a project requires investigating both the ground conditions and the machine and backup system design features. prediction of the machine performance is very important as it has a big effect on the duration of the project and the costs. in this respect, both penetration rate and advance rate must be estimated. utilization factor, which depends on the type of op...

2016
Pamela Puppo Manuel Curto Harald Meimberg

Geological history of oceanic islands can have a profound effect on the evolutionary history of insular flora, especially in complex islands such as Tenerife in the Canary Islands. Tenerife results from the secondary connection of three paleo-islands by a central volcano, and other geological events that further shaped it. This geological history has been shown to influence the phylogenetic his...

Journal: :DEStech Transactions on Computer Science and Engineering 2018

Journal: :Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) 2019

2014
Wahid Ali Noor Mohammad Mohammad Tahir

This research work presents a case study of rock mass characterization on diversion tunnels at Diamer Basha Dam, Pakistan. Geological and geotechnical studies were performed to characterize the rock mass along the axis of diversion tunnel. The core specimens retrieved were tested in laboratory and physical and mechanical properties of the rock mass were determined. Detailed discontinuity survey...

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