Inland Navigation System Research Articles

Quantitative Assessment on Navigation Impact of the Controlled Waterway in the Upper Yangtze River Using Queuing Model

As an important transportation link between eastern and western economic zones of China, the Yangtze River waterway has been globally ranked first in relation to freight volume since 2010, and the density of ship traffic has also increased significantly. However, the inland navigation system has been increasingly threatened by traffic congestion, which is more serious in the controlled waterways of the upper Yangtze River. In this study, the distribution laws of ship traffic flow and service time in the controlled waterway were analyzed, indicating that the traffic flow obeys the Poisson distribution, and the service time obeys a negative exponential distribution. Thereafter, by simplifying the queuing processes and rules, the M/M/1 queuing service model was established to calculate ship queuing indicators in a controlled waterway. It was found that the ship queuing indicators varied greatly among different controlled waterways. Compared with downstream ships, upstream ships usually had longer queuing lengths and times, which were also more affected by the increasing number of ship arrivals and service times. Consequently, a dimensionless loss coefficient was proposed to quantify the influence of the controlled waterway on the navigation capacity. As the service time and number of ships increased, the loss coefficient also increased. The results of this study could provide references for understanding the ship queuing problem, and thereby the assessment of navigation capacity and anchorage constructions in a controlled waterway.

Feasibility of retrofitting existing miter-type lock gates with discontinuous contact blocks

ABSTRACTThe US inland navigation system facilitates the transportation of billions of dollars of goods annually, with lock gates being a major component of the system. Miter-type gates are the most common found in the US and are typically designed to bear continuously against the lock chamber wall along the height of the gate in the region known as the quoin. To aid continuous contact along the quoin, adjustable contact blocks are installed. Currently, contact blocks are large, continuous pieces of steel, making installation and adjustment difficult and expensive. Furthermore, the entire quoin block needs to be replaced if only a small portion is damaged. Initial investigations revealed that the reaction distribution in the quoin with a continuous contact block is likely not distributed uniformly as assumed in design, raising the question of the necessity of a continuous contact block system. Thus, this study investigates using smaller, intermittent quoin blocks as a retrofit option on existing miter gates. Numerical models of several lock gates are utilized, and the stress fields are compared between gates utilizing continuous and discontinuous contact blocks. It is demonstrated that discontinuous quoin blocks are a feasible retrofit option, albeit with a potential need for additional retrofit requirements.

Interpolating Bathymetric Big Data for an Inland Mobile Navigation System

Depth information is crucial in most navigational analysis and decision support implemented in existing inland navigation systems. Bathymetric data sets need to be preprocessed and converted into Digital Terrain Model by interpolation methods to provide different vector layers for Electronic Navigational Chart. Data for inland waters needs to be precise and valid due to quickly alternating inland environment and much shallower areas than on marine waters. At the same time visual effect of created layers needs to be readable and easily interpreted by a navigator. In this paper authors analyze different interpolation method for DTM building from the perspective of accepted criteria. Created depth contours are the base of navigational analysis provided by mobile inland navigation system MOBINAV. The experiments used real inland data from bathymetric surveys conducted on waters of Szczecin area.DOI: http://dx.doi.org/10.5755/j01.itc.47.2.19561

A multidisciplinary approach in wetland geoarchaeology: Survey of the missing southern canal connection of the Fossa Carolina (SW Germany)

In this manuscript we document a multidisciplinary approach in wetland geoarchaeology for detecting artificial structures in a middle European floodplain. By means of a large set of different prospection methods (cadastral analysis, aerial archaeology, LiDAR, SQUID based magnetic prospection, electrical resistivity tomography, seismic refraction tomography, ground penetrating radar) and a subsequent geoarchaeological drilling campaign we provide an overview about the potentials and limits of the applied methods.Our site-specific aims focus on the Fossa Carolina, Charlemagne's shortcut for linking the Rhine-Main and the Altmühl-Danube inland navigation systems during the Early Middle Ages. Our results show that Altmühl meander loops were quasi stable since Carolingian times and that an Altmühl floodplain-crossing trench of at least 650–700 m was required for linking the Altmühl River with the – archaeological known – southernmost position of the existing Carolingian canal. However, our large set of remote sensing and geophysical prospection tools and the corresponding drilling campaign do not show any evidence for the missing Carolingian trench within the Altmühl floodplain. Our results support the idea that the Carolingian canal was never entirely completed although large parts of the canal were almost finished in the northern sections.

Impact of Shippers' Choice on Transportation System Congestion and Performance: Integrating Random Utility with Simulation

In this research, we show how modeling shippers’ responses to congested freight transportation on an important segment of the Upper Mississippi River (UMR) inland navigation system strongly influences the measurement of expected economic benefits attributed to a range of congestion mitigation measures. We present a model of the UMR that integrates a shippers’ random utility model with a discrete event simulation model of the most congested 100-mile segment of the UMR system. The random utility model recognizes that waterway shippers may opt out of using the UMR in response to increased congestion and instead utilize alternative transport modes or destinations. Incorporating the dynamic response of shippers to changing operating conditions improves existing simulation models by explicitly accounting for the preferences and values of shippers, thereby providing a consistent estimate of the direct economic benefits associated with measures designed to reduce congestion and improve system performance. The major contributions of our research include demonstrating the importance of using models that capture shippers’ responses to congestion in freight transportation systems and illustrating a novel methodology for quantifying the direct economic benefits to users of measures to improve transportation on the UMR.

Impact of Shippers' Choice on Transportation System Congestion and Performance: Integrating Random Utility with Simulation

AbstractIn this research, we show how modeling shippers' responses to congested freight transportation on an important segment of the Upper Mississippi River (UMR) inland navigation system strongly influences the measurement of expected economic benefits attributed to a range of congestion mitigation measures. We present a model of the UMR that integrates a shippers' random utility model with a discrete event simulation model of the most congested 100-mile segment of the UMR system. The random utility model recognizes that waterway shippers may opt out of using the UMR in response to increased congestion and instead utilize alternative transport modes or destinations. Incorporating the dynamic response of shippers to changing operating conditions improves existing simulation models by explicitly accounting for the preferences and values of shippers, thereby providing a consistent estimate of the direct economic benefits associated with measures designed to reduce congestion and improve system performance. The major contributions of our research include demonstrating the importance of using models that capture shippers' responses to congestion in freight transportation systems and illustrating a novel methodology for quantifying the direct economic benefits to users of measures to improve transportation on the UMR.

Sensor fault diagnosis of inland navigation system using physical model and pattern recognition approach

In recent years, inland navigation networks benefit from the innovation of the instrumentation and SCADA systems. These data acquisition and control systems lead to a reactive asset-management of inland navigation networks. However, sensors and actuators are subject to faults due to the strong effects of the environment, aging, etc. In this paper, a sensor Fault Detection and Isolation (FDI) approach is proposed using an Integrator-Delay-Zero (IDZ) model, interval observers and the dynamic classification algorithm AUDyC. The combined use of these approaches allows the improvement of the sensor fault diagnosis. The proposed approach is introduced through the case study of the Cuinchy-Fontinettes reach in the north of France.

The Irish coal canals

Inland navigation systems were built in Ireland in the eighteenth century with the specific intention of transporting coal to Dublin from the recently discovered coal deposits in east County Tyrone. The two interlinked canal systems were the Newry navigation and the Tyrone navigation with Lough Neagh in between. The Newry navigation comprised four elements : the 29 km long canal from Portadown to Newry, the water supply for the summit length, the shipping basin at Newry and the 5·2 km long ship canal leading to Carlingford Lough and the open sea. The Tyrone navigation comprised three elements: the 7 km length of the Coalisland Canal from the River Bann to Coalisland, the Coalisland basin and Ducart's Canal beyond Coalisland to the principal coalfield. This paper gives an outline of the background, which showed the need for the canals, their construction, the commercial outcome and their ultimate decline, the current state of repair and future prospects.

A Study on the Asahi-River Improvement Projects before World War II

The government, which had established a river improvement plan in 1925, started improvement projects in 1930 on the Asahi River. Main purpose of the project was to improve the inland navigation system as well as flood control City planning law was applied to Okayama city in 1923.Since the navigation system of the downstream of the Asahi River was very important for the urban development, it was asserted that the downstream of the Asahi River should be turned into a canal.The Hyakken. River had been diverged from the main stream of the Asahi River in the 1600s.The people of Okayama raised objections to the original plan, and besides, there was the intense struggle with the improvement plan between those who lived in the area near the main stream and those who lived in the area near the diverged channel.Finally, the Hyakken River was officially designated as a diversion channel in the plan, and the main stream of the Asahi River was improved to serve the needs of navigation system as well as a flood flow channel.

FACTORS AFFECTING WATERWAY INVESTMENT DECISIONS1

ABSTRACT: There are many factors, other than economic efficiency, which must be considered in judging the merits of proposed investments in the inland navigation system. No satisfactory formula exists for deciding the net worth of public investments in water resources projects. Such a measure would not be accepted because these investments can serve conflicting goals. Political, rather than technical, judgments are required to resolve these goal conflicts.

Development of the Ship Channel Between Montreal and Deep Sea

The dredged channel of the St. Lawrence River between Montreal and lle aux Coudres forms part of one of the largest inland navigation systems in the world. From the Gulf, ships can travel almost 2000 miles to the head of the Lakes. The various stages of development of the channel to obtain a controlling depth of 35 ft between Montreal and Quebec City and a sufficient depth for a draft of 48 ft—with the aid of the tide— from Quebec City eastward are discussed in this paper.

Soviet Waterways: The Development of the Inland Navigation System in the U.S.S.R

Journal Article Soviet Waterways: The Development of the Inland Navigation System in the U.S.S.R Get access Soviet Waterways: The Development of the Inland Navigation System in the U.S.S.R. By Andrei Lebed and Boris Yakovlev. Munich, Institute for the Study of the U.S.S.R., 1956. xii+162 pp. Maps. Tables. Bibliog. Index. (Series 1, No. 36.) L. Bott L. Bott Search for other works by this author on: Oxford Academic Google Scholar International Affairs, Volume 34, Issue 2, April 1958, Page 240, https://doi.org/10.2307/2606771 Published: 01 April 1958

ON THE COMMERCIAL CENTERS IN CHINA

Peking_??__??_, Soochow_??__??_, Foshan_??__??_and Hankow_??__??_were, according to Liu Hsien-t'ing_??__??__??_, the geographer of that day, were four commercial centers in the 17th century China. Now T'ienchin_??__??_, Shanghai_??__??_and Canton_??__??_(or Hongkong_??__??_)has replaced the former three cities. This fact means that inland cities have lost their importance, and the seaside cities in neibourhood have taken their places. It means also that the inland navigation systems still have never changed since more than 300 years.