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Mine use sublevel caving method, in the production process, the mine pass is an essential ore transport channel, in the production plays an very important role. Therefore the stability of the chute is an important technical support of the mining production and the safety in underground metal mines. Taking a sublevel caving method mining as the research background, Using the MIDAS / GTS finite element...
Service area is one of fundamental parts in freeway, an important mark to show freeway's perfection. Its disposition plays very important role in reducing the traffic accidents, optimizing the driving environment, raising the operational and social efficiency. The issue, which should be seriously considered during freeway plan and construction, is how to make facility disposition at service area suitable,...
The present main problems of roadside transfer hub of routine public transit system are described, and the conception and functions of off-street transfer hub are analyzed. So the bus line number, bus frequency, aggregate and disperse passenger flows, transfer passenger flow and transfer time of the transfer hub are chosen as the indexes to describe the distributed and transferred functions of substations...
The layout of routine public transit is quite important for the functions of the whole system in transportation hub planning. The measure standard and calculation model of travel cost using the off-street transfer hub is confirmed based on the service objects and service function. The possibility of passengers traveling route is analyzed in detail, and the Logit model is chosen to simulate the route...
It is well known that limited safety distance and excessive intersections are the main reasons of the increasing traffic accidents on arterial roads. Based on the highway functional classification and intersection control types, the intersection spacing mode is divided firstly to make sure the arterial road access spacing and intersection corner clearance as the research object. Then for the concept...
Death and injuries as a result of road accidents is a recognized global problem and authorities are aware of the consequences this global phenomenon might lead to. Roadway safety is one of the most important issues in transportation. Intersections are the locations with higher traffic crashes as compared with other roadway locations. This paper introduces an approach to evaluate roadway intersection...
Highway intersections play great important roles in the well-being of the whole highway system. Inappropriate control of highway intersections usually leads to poor performance, which causes traffic accidents and congestions. Although there are many factors affecting intersection performance, traffic volumes and compositions are by far the most important factors. Besides, they are impossible to be...
The unique characteristics of highway intersections have caused them to be the most dangerous places in the road system. Complexity of causes of traffic crashes at highway intersections, difficulty in data collection of traffic accidents and traffic conflicts and many other reasons have made safety performance evaluation of highway intersections one of the most difficult tasks, in spite of the fact...
Safety performance of highways has always been the focus of traffic engineering studies. Although many factors impact safety of highway transportation, at-grade intersection spacing is by far one of the most important factors. In reality, many situations can lead to closely neighbored intersections which become major causes of traffic accidents. To improve safety, intersection spacing should guarantee...
Network design problem has originated in the practice of traffic engineering. Planning and designing road system has always been the most important task of traffic engineers. The objective of network design problem is to plan and design an improvement project for a road network systematically so that the total travel cost of the whole road system is minimized. Because of the complexity of the models,...
Traffic conflict studies have been accepted because the data and the effectiveness of a treatment of safety problems can be collected and evaluated in a short period of time. Driving behavior is the reflection of the vehicles operating characteristic, and it has close relation with traffic safety. In the paper, the process of vehicle coming and going at intersection, and driving behavior when conflict...
Multi-path effect is the main error source for GPS high precision positioning in near distance differential circumstance. This paper presents a novel method for vehicle navigation in the situation. The current state vector of a vehicle can be used to estimate the state vector in the next interval. Then residual error vector can be computed by using the estimated state vector and the state vector measured...
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