scholarly journals “ The future of revegetation technology in cold regions with snowfall ” Effect of indigenous vegetation used on a cut slope in a cold region with minimal snow depth

2016 ◽  
Vol 42 (4) ◽  
pp. 520-528
Author(s):  
Naoto FUKUDA ◽  
Osamu TSUJI
Keyword(s):  
Snow Depth ◽  
Cut Slope ◽  
Cold Region ◽  
Cold Regions ◽  
The Future

Classification, Causes of Tunnel Frost Damages in Cold Region and Several New Technologies to Prevent them

2012 ◽  
Vol 170-173 ◽  
pp. 1504-1510 ◽  
Author(s):  
Zhe Ji ◽  
Kang Cheng Lu ◽  
Chao Chao Ma
Keyword(s):  
Structural Damage ◽  
New Technologies ◽  
Electric Heating ◽  
Drainage Water ◽  
Good Choice ◽  
Large Temperature ◽  
Freezing Damage ◽  
Cold Region ◽  
Cold Regions ◽  
Drainage Pipe

This paper classifies the tunnel frost damages and discusses their causes, especially the causes of lining structural damage for freezing and they are classified into two categories: the outer freezing damage and the inner freezing damage of lining. The analysis shows that the former has a little effect on the structure, but the latter has big threat. For the phenomenon that cracks frequently occur in the tunnel lining of cold regions, some measures to prevent cracks are presented, including reducing adverse constraints in the process of temperature change and preventing large temperature stress. In cold regions, it is unsuitable to adopt back paste-type water-stops to prevent the leakage from lining construction joints, and a good choice is to utilize the buried drainage water-stops. The ring drainage pipes directly connect with the central drainage pipe, and thermal insulating layer with belt shape is set along the ring drainage pipes in some sections where surrounding rock is water-rich and the middle and lower part of the ring drainage pipe are easily frozen. In sections with high potential freezing threat, an anti-freezing plan is offered that electric heating wires are installed behind the lining wall. The test shows that above techniques have good effects in cold region tunnels.

Current Status and Development Trend of Assembled Structure in Cold Regions

2014 ◽  
Vol 941-944 ◽  
pp. 809-813
Author(s):  
Ya Bo Wang ◽  
Han Ting Liu
Keyword(s):  
Development Trend ◽  
Feasibility Analysis ◽  
Current Status ◽  
Cold Region ◽  
Cold Regions ◽  
History Of

Based on the review of the history of domestic and foreign architecture, the necessity and urgency of industrialization in construction is expounded. According to the current status and problems of the assembled structure in severe cold region, the method is given. The feasibility analysis is done in the light of the comparatively example.

Research on a new detection method of slab surface crack in mould during continuous casting

2017 ◽  
Vol 115 (1) ◽  
pp. 108
Author(s):  
Yu Liu ◽  
Xudong Wang ◽  
Yi Sun ◽  
Man Yao ◽  
Yali Gao ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Continuous Casting ◽  
Temperature Change ◽  
Longitudinal Crack ◽  
Cold Region ◽  
Cold Regions ◽  
Slab Continuous Casting ◽  
Computer Image Processing ◽  
Positive Meaning ◽  
Mean Differences

Based on the mould temperature measured by thermocouples during slab continuous casting, a new thermograph with difference of temperature change is developed to detect slab cracks. This thermograph allows the characteristics of longitudinal crack during formation and propagation process to be captured and extracted by means of computer image processing algorithms, such as the maximum difference of temperature change, the mean difference of temperature change, height and width, aspect ratio and moving velocity. These characteristics are also compared to the normal and abnormal cold regions. The results show that the maximum and mean differences of temperature change are very large. The moving velocity is almost close to casting speed. The cold region is almost parallel to casting direction. The aspect ratio of cold region caused by longitudinal crack is very large, which is different to other abnormalities. These characteristics of abnormal regions can be used to judge longitudinal crack, normal continuous casting and other abnormalities. This method presents some visual characteristics of cold regions caused by longitudinal crack to operators clearly. Meanwhile, it also has a positive meaning to the intelligence and visualization of mould monitoring during slab continuous casting.

Interpretation of Concerning Comfort of Office Building Design in Cold Regions

2014 ◽  
Vol 507 ◽  
pp. 92-96
Author(s):  
Yao Fu ◽  
Ying Zhang
Keyword(s):  
Architectural Design ◽  
Building Design ◽  
Building Envelope ◽  
Office Buildings ◽  
Office Building ◽  
Cold Region ◽  
Cold Regions ◽  
Building Orientation ◽  
Air Supply

Abstract:This paper interpreted the comfort of office buildings in cold regions in the view of architecture. To make the architect to build a people-centered thinking in architectural design; The analysis of design start discussions from the relation between comfort and architectural design, through building orientation, building envelope structure, indoor fresh air supply and other elements to put forward designing direction in cold region office building .

scholarly journals Integrated Hydrologic Modelling of Groundwater-Surface Water Interactions in Cold Regions

2021 ◽  
Vol 9 ◽  
Author(s):  
Xiaofan Yang ◽  
Jinhua Hu ◽  
Rui Ma ◽  
Ziyong Sun
Keyword(s):  
Climate Change ◽  
Surface Water ◽  
Snow Cover ◽  
Hydrologic Model ◽  
Current Status ◽  
Permafrost Degradation ◽  
Cold Region ◽  
Hydrologic Models ◽  
Cold Regions ◽  
Hydrologic Processes

Groundwater-surface water (GW-SW) interaction, as a key component in the cold region hydrologic cycle, is extremely sensitive to seasonal and climate change. Specifically, the dynamic change of snow cover and frozen soil bring additional challenges in observing and simulating hydrologic processes under GW-SW interactions in cold regions. Integrated hydrologic models are promising tools to simulate such complex processes and study the system behaviours as well as its responses to perturbations. The cold region integrated hydrologic models should be physically representative and fully considering the thermal-hydrologic processes under snow cover variations, freeze-thaw cycles in frozen soils and GW-SW interactions. Benchmarking and integration with scarce field observations are also critical in developing cold region integrated hydrologic models. This review summarizes the current status of hydrologic models suitable for cold environment, including distributed hydrologic models, cryo-hydrogeologic models, and fully-coupled cold region GW-SW models, with a specific focus on their concepts, numerical methods, benchmarking, and applications across scales. The current research can provide implications for cold region hydrologic model development and advance our understanding of altered environments in cold regions disturbed by climate change, such as permafrost degradation, early snow melt and water shortage.

Research on Energy-Saving Design of Building Exterior Pattern for Cold Regions

2014 ◽  
Vol 1065-1069 ◽  
pp. 2232-2235
Author(s):  
Chen Hui
Keyword(s):  
Energy Saving ◽  
Design Method ◽  
Cold Region ◽  
Cold Regions ◽  
Architectural Form ◽  
Regional Characteristics ◽  
Construction Design ◽  
The Relationship ◽  
Climatic Features

According to the regional characteristics and climatic features in a cold region, interpret the relationship between building exterior pattern and energy-saving design by do the research on building size, building skin and construction design method,and explore how to combination of both, explore the possibility of the development of energy-saving building forms in a cold region on this basis, and enrich its architectural form vocabulary.

scholarly journals The Cold Region Critical Zone in Transition: Responses to Climate Warming and Land Use Change

2021 ◽  
Vol 46 (1) ◽  
Author(s):  
Kunfu Pi ◽  
Magdalena Bieroza ◽  
Anatoli Brouchkov ◽  
Weitao Chen ◽  
Louis J.P. Dufour ◽  
...  
Keyword(s):  
Land Use ◽  
Climate Warming ◽  
Environmental Changes ◽  
Critical Zone ◽  
Annual Review ◽  
Publication Date ◽  
Cold Region ◽  
Anthropogenic Pressures ◽  
Modeling Tools ◽  
Cold Regions

Global climate warming disproportionately affects high-latitude and mountainous terrestrial ecosystems. Warming is accompanied by permafrost thaw, shorter winters, earlier snowmelt, more intense soil freeze-thaw cycles, drier summers, and longer fire seasons. These environmental changes in turn impact surface water and groundwater flow regimes, water quality, greenhouse gas emissions, soil stability, vegetation cover, and soil (micro)biological communities. Warming also facilitates agricultural expansion, urban growth, and natural resource development, adding growing anthropogenic pressures to cold regions’ landscapes, soil health, and biodiversity. Further advances in the predictive understanding of how cold regions’ critical zone processes, functions, and ecosystem services will continue to respond to climate warming and land use changes require multiscale monitoring technologies coupled with integrated observational and modeling tools. We highlight some of the major challenges, knowledge gaps, and opportunities in cold region critical zone research, with an emphasis on subsurface processes and responses in both natural and agricultural ecosystems. Expected final online publication date for the Annual Review of Environment and Resources, Volume 46 is October 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Sign in / Sign up

Export Citation Format

Share Document