Current Situation and Development of Construction’s Control Method that Oversized Earth-Rock Mixtures Subgrade

2012 ◽  
Vol 170-173 ◽  
pp. 3190-3193
Author(s):  
Lian Yu Wei ◽  
Zhi Ming Zhang
Keyword(s):  
Control Method ◽  
Site Investigation ◽  
Current Situation ◽  
Construction Control ◽  
Control Technology ◽  
Construction Site ◽  
Control Technologies

Through large amount analysis of construction site investigation and data, we summed up several constructions control technologies and methods easier to achieve in projects for the aspect of the super-size filling embankment construction control technology.

scholarly journals Research on the development status and trend of chassis control technology by wire

2021 ◽  
Vol 268 ◽  
pp. 01040
Author(s):  
Chang Yang ◽  
Rongliang Liang
Keyword(s):  
Control System ◽  
Control Method ◽  
Rapid Development ◽  
Steering System ◽  
Control Technology ◽  
Development Status ◽  
Chassis Control ◽  
Automobile Electronic ◽  
Control Technologies ◽  
Mechanical Devices

With the rapid development of automobile electronic industry, more and more electronic control technologies are replacing the traditional mechanical devices of automobile. Modern automobile chassis control technology is developing towards the direction of wire control. The wire control system will replace the traditional control system which mainly consists of hydraulic, pneumatic and mechanical systems, so as to realize the integration with other systems. In this paper, the development status of vehicle by wire control technology in various countries, as well as the composition, working principle and control method of vehicle by wire steering system and brake by wire system are summarized, the key technologies affecting the development of vehicle by wire control are summarized, and the application of by wire control technology in the future automotive field is prospected.

Study on the Drilling Formation Selection and Risk Analysis of the Directional Drilling

2012 ◽  
Vol 461 ◽  
pp. 652-655
Author(s):  
Ying Wu ◽  
Peng Zhang ◽  
Xiao Li
Keyword(s):  
Site Investigation ◽  
Construction Site ◽  
Construction Process ◽  
Directional Drilling ◽  
Selection Methods ◽  
Related Literature ◽  
Literature Research ◽  
Geological Conditions ◽  
Drilling Technology ◽  
Pipeline Crossing

Directional drilling technology is an important and very promising trenchless pipeline crossing technology. On the basis of the related literature research at home and abroad and our pipeline construction site investigation, focuses on several common soil properties are introduced, and then the formation adaptability of directional drilling is analyzed. The drilling selection methods are made when drilling in the specific geological conditions, and the possible risks of the construction process have been classified in the directional drilling.

scholarly journals Zoning Control Technology of Gob-Side Roadway Driving with Small Coal Pillar Facing Mining in a Special Isolated Island Working Face: A Case Study

2021 ◽  
Vol 11 (22) ◽  
pp. 10744
Author(s):  
Changliang Han ◽  
Houqiang Yang ◽  
Nong Zhang ◽  
Rijian Deng ◽  
Yuxin Guo
Keyword(s):  
Control Method ◽  
Coal Pillar ◽  
Control Technology ◽  
Stability Zone ◽  
Pressure Relief ◽  
Collaborative Control ◽  
Working Face ◽  
Underground Coal Mines ◽  
Engineering Practices

The gob-side roadway in an isolated island working face is a typical representative of a strong mining roadway, which seriously restricts the efficient and safe production of underground coal mines. With the engineering background of the main transportation roadway 1513 (MTR 1513) of the Xinyi Coal Mine, this paper introduces the engineering case of gob-side roadway driving with small coal-pillar facing mining in an isolated island working face under the alternate mining of wide and narrow working faces. Through comprehensive research methods, we studied zoning disturbance deformation characteristics and stress evolution law of gob-side roadway driving under face mining. Based on the characteristics of zoning disturbance, MTR 1513 is divided into three zones, which are the heading face mining zone, the mining influenced zone, and the mining stability zone. A collaborative control technology using pressure relief and anchoring is proposed, and the differentiated control method is formed for the three zones. For the heading face mining zone, the control method of anchoring first and then pressure relief is adopted; for the mining influenced zone, the control idea of synchronous coordination of pressure relief and anchorage is adopted; for the mining stability zone, the control method of anchoring without pressure relief is adopted. Engineering practices show that the disturbance influence distance of working face 1511 on MTR 1513 changes from 110 m advanced to 175 m delay. At this time, the surrounding rock deformation is effectively controlled, which verified the rationality of the division and the feasibility of three zoning control technology. The research results can provide reference for gob-side roadway driving with small coal pillar facing mining in a special isolated island working face.

scholarly journals Multicriterial Evaluation of the Transport and Logistic System of the Moscow Region

2021 ◽  
Vol 334 ◽  
pp. 02029
Author(s):  
Vasily Demin ◽  
Alexey Terentyev
Keyword(s):  
Radio Frequency ◽  
Control Method ◽  
Complex Structure ◽  
Moscow Region ◽  
Logistics System ◽  
System Parameters ◽  
Complex Problems ◽  
Control Technologies ◽  
And Control

The article deals with the direction of solving complex problems of interaction between the elements of the transport and logistics system of the Moscow region as a complex structure of management methods in multi-criteria systems and technologies for monitoring the quality of processes. The control method should optimize the system parameters, and control technologies (radio frequency cargo identification) implement feedback in the system.

Maximum Achievable Control Technology: What a Shipbuilder Should Know for Environmental Compliance

1998 ◽  
Vol 14 (04) ◽  
pp. 255-264
Author(s):  
Bhaskar Kura ◽  
Praveen Mookoni
Keyword(s):  
Environmental Protection Agency ◽  
Air Pollutants ◽  
The United States ◽  
Control Technology ◽  
Hazardous Air Pollutants ◽  
Commercial Source ◽  
Maximum Achievable Control Technology ◽  
Source Category ◽  
Control Technologies ◽  
Ship Repair

The new system for the control of air toxics being developed by the United States Environmental Protection Agency called the "Maximum Achievable Control Technology" requires the development of technology based standards for Hazardous Air Pollutants within a specific industrial or commercial source category. This paper attempts to provide a comprehensive understanding of the rule and its applicability to shipbuilding and ship repair industry. The reasons for selecting California regulations as the shipyard maximum available control technology, the compliance procedures, the control technologies for paints as-supplied and paints as-applied and other general requirements under the MACT rule are discussed in detail in this paper.

scholarly journals T-RBAC based Multi-domain Access Control Method in Cloud

2017 ◽  
Vol 8 (4) ◽  
pp. 29
Author(s):  
Dapeng Xiong ◽  
Liang Chen
Keyword(s):  
Access Control ◽  
Control Method ◽  
Comparative Trial ◽  
Control Policy ◽  
Control Model ◽  
Control Technology ◽  
Cloud Environment ◽  
Access Control Policy ◽  
Driving Model ◽  
And Task

Access control technology protects cloud from being accessed illegal. However, traditional access control technology cannot meet the new features of the cloud environment. In order to improve the deficiency of the current multi domain access control in timeliness and flexibility. This paper put forward a dynamic access control policy on the basis of task driving idea. New method combined the advantage of RBAC and task driving model, joined with limit aging and real time strategy synthesis. Comparative trial show that new policy had an advantage in flexibility and availability of multi-domain access control model.

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