scholarly journals INFRASTRUCTURE PARAMETERS AFFECTING CAPACITY OF RAILWAYS IN TEN-T

2016 ◽  
Vol 5 ◽  
pp. 22
Author(s):  
Vít Janoš ◽  
Milan Kríž
Keyword(s):  
Double Track ◽  
Track Line ◽  
Opposite Line

The article presents possible solutions of the issue of the lost capacity on a double-track line. It is shown a solution where an inserted train on the double-track line use the lost capacity of the opposite line track using active overtaking. The feasibility of such a solution is discussed and the length of sections suitable for active overtaking is calculated.

scholarly journals TUNNELING IN OPHIOLITHIC SERIES FORMATIONS: TUNNELS OF THE NEW HIGH-SPEED RAILWAY DOUBLE TRACK LINE - SECTION LIANOKLADI - DOMOKOS

2017 ◽  
Vol 43 (3) ◽  
pp. 1272
Author(s):  
N. Mourtzas ◽  
A. Gkiolas
Keyword(s):  
High Speed ◽  
Mountainous Area ◽  
Underground Excavation ◽  
Geotechnical Parameters ◽  
Line Section ◽  
Geotechnical Investigations ◽  
Double Track ◽  
Narrow Area ◽  
Track Line ◽  
Tectonic Origin

For the project “3rd phase of design of the new high speed double track line - section Lianokladi – Domokos (subsection: Ch. 0+000 - Ch. 13+500)” geological and geotechnical investigations and designs were implemented for tunnels and cut & cover of the subsection Ch. 9+685 - Ch. 12+254. The above subsection, a significant part of which is already constructed, includes three tunnels (SS1, SS2 and SS4) and one Cut & Cover (SS3). Tunnels SS1, SS2 and SS4 are of lengths 860m, 477m and 495m, with overburden 58m, 50m and 60m respectively and are driven in mountainous area consisting of ophiolithic series formations, mainly massive basalts with varying fragmentation, dolerites, spilitic intrusions and serpentinites. The above formations are characterised by variable fragmentation, weathering and degree of alteration. At places metamorphic basalt (amphibolite) is also encountered. Schist-chert intrusions and ophiolithic material with intense schistification, are considered of tectonic origin and are connected with the major and secondary compressive fault zone in the area. Limestone blocks inside the ophiolithic mass are also considered of tectonic origin. The narrow area of the alignment is characterized by the presence of normal and transverse faults, along with major joints crossing the rockmass. The formations along the tunnels, according to their engineering – geological behaviour, were separated to seven geotechnical units. Representative values for the geotechnical parameters of each unit were determined and analyses for the corresponding primary support categories were performed, using code UNWEDGE (RocScience) for rock-classes were behaviour of underground excavation is determined mainly due to orientation of joints and using code PHASE2 version 6.011(RocScience) for formations were behaviour of underground excavation is determined mainly by their strength and deformability.

scholarly journals Estimation of conditions of using combined single-track and double-track railways at high-speed traffic

2018 ◽  
Vol 216 ◽  
pp. 02010 ◽  
Author(s):  
Alexei Dmitrenko ◽  
Sergei Karasev ◽  
Alexandra Kalidova ◽  
Dmitry Sivitsky
Keyword(s):  
Simulation Modeling ◽  
High Speed ◽  
Capital Investments ◽  
Single Track ◽  
Railway Transportation ◽  
Relevant Issue ◽  
Important Condition ◽  
High Speed Railway ◽  
Double Track ◽  
Track Line

An important condition when arranging high-speed railway transportation with insignificant traffic is saving of capital investments in construction of new lines or the reconstruction the existing ones. Development of methods for multi-criteria estimation of the possibility of using fully single-track blocks on a line with high-speed traffic, as well as single-track blocks with double-track inserts, is a relevant issue. The purpose of the study is to develop the criteria and the method for estimation of the feasibility of using single-track elements on a line with high-speed traffic. Methods of simulation modeling, mathematical statistics, regression analysis were used. A method that includes estimation of the technological conditions of using single-track elements on a line with high-speed traffic instead of double-track blocks was developed. The method can be used for multi-criteria optimization of the configuration of a combined single-track and a double-track line using single-track elements in high-cost areas.

scholarly journals Organizing transportation on a double-track line under conditions of major overhaul on one track

2006 ◽  
Vol 16 (1) ◽  
pp. 97-105
Author(s):  
Branislav Boskovic ◽  
Milos Ivic ◽  
Aleksandar Markovic
Keyword(s):  
Decision Making ◽  
Computer Simulation ◽  
Analytical Models ◽  
Traffic Intensity ◽  
Major Overhaul ◽  
Railway Line ◽  
Traffic Organization ◽  
Double Track ◽  
Track Line

The problem of traffic organization on a railway line during the execution of civil works on super and sub-structures maintenance under the present conditions is becoming more and more difficult to solve, above all, due to the increased traffic intensity. In order to make decisions on indispensable measures to be taken under such circumstances, one needs information on train compositions and their delays, line capacity, facilities, etc. In order to obtain such information, it is necessary to use a computer simulation which significantly enhances the range of the problem to be solved and offers answers to the questions that cannot be solved by analytical models alone. The paper presents a simulation model of the trains? movement on a double-track line when one track is closed to traffic due to the work executions. Such model will provide a better quality of decision-making in the process of traffic organization under given circumstances.

Ventilation plan objectives of the double-track metro tunnels excluding the running facilities construction

2019 ◽  
Vol 4 (6) ◽  
pp. 202-213
Author(s):  
E.A. Savenkov ◽  
◽  
V. Castaneda Negalskalov ◽  
R.A. Kurov ◽  
◽  
...  
Keyword(s):  
Double Track

Research on imbalance between supply and demand in China's natural gas market under the double-track price system

Energy Policy ◽  
2021 ◽  
Vol 155 ◽  
pp. 112380
Author(s):  
Jian Chai ◽  
Xiaokong Zhang ◽  
Quanying Lu ◽  
Xuejun Zhang ◽  
Yabo Wang
Keyword(s):  
Natural Gas ◽  
Supply And Demand ◽  
Price System ◽  
Natural Gas Market ◽  
Gas Market ◽  
Double Track
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