The Construction Technology of Segmented Parallel Operations in Main Shaft No. 2, Wutong Coal Mine

2012 ◽  
Vol 256-259 ◽  
pp. 163-169
Author(s):  
Peng Fei Zhao ◽  
Yan Bing Wang ◽  
Yu Fei Zhang ◽  
Dong Ming Guo
Keyword(s):  
Technological Innovation ◽  
Coal Mine ◽  
Construction Technology ◽  
Main Shaft ◽  
Construction Methods ◽  
Rapid Construction ◽  
Energy Expansion

The construction of main shaft No.2 in Wutong coal mine is the key project of energy expansion and technological innovation. It started in December 2008 and jointed commissioning in the end of July 2010.Engineering capacity,a tight schedule and the difficulty of construction are the tough points. So if according with conventional construction methods,the project would have difficulty in completing on schedule.After repeated demonstration ,the researches of Wutong coal mine break the routine. The construction technology of segmented parallel operations is adopted to accelerate the construction schedule.This technology not only makes main shaft No.2 in advance of two months to complete construction and installation works, but also achieves difficult precisely through in both upper and lower segments.Totally plane error is only 80mm in through point.The project hits a good example for future wellbore rapid construction.

Earth Building Materials, Production, and Construction Techniques

2013 ◽  
pp. 517-536
Author(s):  
Hamed Niroumand ◽  
M.F.M Zain ◽  
Sanaz Naghavi Alhosseni
Keyword(s):  
Sustainable Development ◽  
Built Environment ◽  
Building Materials ◽  
Construction Technology ◽  
Construction Methods ◽  
Construction Techniques ◽  
National University

Building materials and construction technology are strongly interrelated with the pillars for sustainable development (e.g. environment, society economy, culture and politics). Earth Building, an 11,000-year-old practice of building using sustainable and earth materials, is practiced worldwide. Earth has been used to construct walls, floors, roofs, and even furniture. Today it is estimated that between 33-50%of the world's population is housed in earth homes. This chapter reviews the two-year process of earth buildings and earth architecture carried out by the Department of Architecture Faculty of Built Environment and Engineering at National University of Malaysia (UKM). The current research emphasis is on the types, construction methods, and architectural aspects of earth buildings and earth architecture. The current manuscript compares type of earth buildings and their properties and applications based on building materials and architectural aspects in construction.

scholarly journals Construction Technology of Composite Cofferdam for Main Pier Bearing Platform of Dongjiang Lichuan Bridge

2020 ◽  
Vol 165 ◽  
pp. 04047
Author(s):  
Jianping Wang
Keyword(s):  
Steel Sheet ◽  
Economic Benefits ◽  
Construction Technology ◽  
High Quality ◽  
Rock Stratum ◽  
Advantages And Disadvantages ◽  
Construction Methods ◽  
Bored Pile ◽  
Geological Conditions ◽  
Pile Cap

Dongjiang Lichuan Bridge in Dongguan City is a curved tower curved beam cable-stayed bridge with a main span of 138m and no back cable. The main pier cap is located on the bank slope of Dongguan Waterway on one side of Nandi Road. The cushion cap is dumbbell type, and the left and right cushion caps are connected by tie beams. In most areas, the top of rock stratum is above the bottom of bearing platform. The rock stratum within the buried depth of bearing platform is moderately to strongly weathered argillaceous siltstone. The geological conditions are complex and the construction is difficult. In line with the principles of speeding up the construction process and improving economic benefits, comprehensive analysis and weighing advantages and disadvantages, the main pier cap adopts a composite cofferdam of filling soil to build an island and combining bored pile rows and steel sheet piles. The construction task of bearing platform of main pier has been completed with high quality. Compared with other cushion cap construction methods, this construction method has the advantages of fast construction, high quality, simple safety, energy saving and environmental protection. This paper briefly introduces the design scheme of composite cofferdam, expounds in detail the operation steps of steel sheet pile construction and the problems needing attention in construction, and provides good reference experience for similar pile cap construction.

Development of Concrete Construction Technology in Winter

2013 ◽  
Vol 353-356 ◽  
pp. 2843-2846 ◽  
Author(s):  
Tong Zhang ◽  
Shuai Tian ◽  
Hong Yan Chen
Keyword(s):  
Carboxylic Acid ◽  
Heat Storage ◽  
Negative Temperature ◽  
Third Generation ◽  
Construction Technology ◽  
Freezing Damage ◽  
Concrete Construction ◽  
The Third ◽  
Construction Methods ◽  
Damage Prevention

Nearly twenty years, freezing damage prevention of concrete construction in winter, construction methods of generalized integrated heat storage, the third generation of water-reducing agent (Poly carboxylic acid sodium), the theory of critical maturation degree, composite antifreeze, the key and matching technology of concrete construction under negative temperature and so on are all emerging constantly. Development progress of winter construction technology is promoted. All kinds of technology and economic about construction methods in winter are compared in this paper. The selection basis of concrete construction methods in winter is provided for different conditions.

Sustainable Construction Technology Based on Building Modules

2014 ◽  
Vol 1041 ◽  
pp. 231-234 ◽  
Author(s):  
Mária Kozlovská ◽  
Pavol Kaleja ◽  
Zuzana Struková
Keyword(s):  
Traditional Method ◽  
Sustainable Construction ◽  
Construction Technology ◽  
Modular Construction ◽  
Construction Methods ◽  
House Construction ◽  
Traditional Construction ◽  
Family House ◽  
Bearing Structure

The aim of the paper is to demonstrate the widely presented benefits of modular construction as compared with traditional construction method. A case study of family house construction by modular building method and traditional method is used to examine the structural, economic and time indicators of individual construction methods. The results are presented in tabular and graphical outputs and are compared each other in regard to different technological parts of the building. The paper provides the comparison of economic and time indicators resulting from budgets and time schedules of construction that are executed for different variants. Such comparison demonstrates exactly the benefits of modular construction. The building based on building modules consisted of steel bearing structure and enveloped by sandwich panels is adopted as the selected modular construction technology. The different variant, applied for comparison of modular and traditional construction, is represented by the building with comparable thermo-technical characteristics, constructed by traditional masonry method.

Study on the System of Multi-Directioncal Inclined Modular Anchorage in the Tunnel Surrounding Rock of Horizontal Bedded

2012 ◽  
Vol 170-173 ◽  
pp. 1761-1764
Author(s):  
Qian Guan Zhang
Keyword(s):  
New Technology ◽  
Spatial Arrangement ◽  
Wall Rock ◽  
Local Deformation ◽  
Surrounding Rock ◽  
Construction Technology ◽  
Construction Time ◽  
Construction Methods ◽  
Construction Risk ◽  
Anchoring System

Tunnel construction, inevitably crosses the surrounding rock of the horizontal bedded .The construction prone to bring about the accident of the local deformation, swaping blocks even the overall collapse, in particular,before completing supporting and reinforcement. Thus, it is particularly important to finish the anchoring timely. The design and construction methods of the conventional vertical anchoring system easily leads to personnel injured, the quality of construction is difficult to guarantee, etc. In the paper, the construction technology which is we adopted is using the way to unite the bedded wall rock inclined bolt and the vertical rock layers bolt .In anchoring, we optimize the spatial arrangement and the construction time. Simultaneously, we analysis the system which is the paper adopted and the tradition technology by the mechanical theory. The results show that there is the consistent effect between the new technology and the old one. However, the new one is to reduce the construction risk and to ensure the constructors’ safe. In conclusion, the new system has the significance of guidance and reference in tunneling.

Japan TAF Epoxy Asphalt Concrete Design and Steel Bridge Deck Pavement Construction Technology

2013 ◽  
Vol 330 ◽  
pp. 905-910 ◽  
Author(s):  
Cheng Zhu
Keyword(s):  
Asphalt Concrete ◽  
Bridge Deck ◽  
Steel Bridge ◽  
Construction Technology ◽  
Pavement Materials ◽  
Construction Methods ◽  
Epoxy Asphalt ◽  
Pavement Construction ◽  
Epoxy Asphalt Concrete ◽  
Bridge Deck Pavement

The TAF epoxy asphalt concrete (EAC) is a new steel bridge deck pavement materials , the application of the TAF EAC is increasing in China. But the research for some of it's performance and construction technology is not throughly, which results in the useful life of the bridge deck paving materials greatly reducing. This paper focuses on the design and construction methods of the Japanese TAF epoxy asphalt concrete, and take the Humen bridge steel bridge deck pavement repair project in December 2011 for example.

Key Construction Technology of Track Slab in Turnout Zones on Passenger Dedicated Lines

2010 ◽  
Author(s):  
Yong Zeng ◽  
Xueyi Liu ◽  
Rongshan Yang
Keyword(s):  
Construction Technology ◽  
Track Geometry ◽  
Slab Track ◽  
Construction Methods ◽  
Ballastless Track ◽  
Track System ◽  
Supporting Layer ◽  
Structure Strength ◽  
High Transition ◽  
Strength And Durability

Diverse types of ballastless track have been developed in turnout zones, of which the prefabricated slab track in turnout zones is characterized with simple and fast construction technology and thus can preferably achieve the structure requirements. Slab tracks can be put into use after the track components are installed completely. A high demand is raised to ensure the accuracy of construction because of the complicated structure and force bearing status. This paper mainly shows the structure features, construction technology process and construction methods. Meanwhile, the construction control standards and important matters needed attention are involved too. The prefabricated slab track system in turnout zones is mainly made of turnout components, prefabricated turnout slab, concrete base and so on, which has advantages of lower structural height, stable track geometry status and less maintenance. The transition from turnout zones to section of ballastless track lines can be achieved easily without extra components. Moreover, the turnout slabs are prefabricated indoor so that the structure strength and durability can be guaranteed. At the same time by using the prefabricated slabs, the installation accuracy is improved and the amount of concrete made in site is greatly reduced. The construction of slab track turnouts mainly include construction of frost retarding layer, leveling blanket and supporting layer, rough track laying, accurate adjustment of turnout slabs, and installation of turnouts. More attention should be paid to the construction accuracy and the ability of keeping track geometry in order to achieve the high transition regularity.

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