I. Preface
Ningxia Hui Autonomous Region is located in the northwest of China, with a complex geomorphologic composition, mainly dominated by mountains and plateaus. The diverse surface morphology provides the Ningxia Hui Autonomous Region with different economic development conditions, and at the same time, it also brings problems and challenges to the implementation of overhead line foundation projects in the region, making it more difficult to control the implementation process of foundation projects. Figure 1 shows the voltage levels and number of projects completed in different areas of Ningxia in 2014, from which it can be seen that as many as eight projects were constructed for 110KV projects in the Zhongwei area, and two projects were constructed for 330KV projects in the Zhongwei area.
In recent years, with the in-depth development of industry and social economy within the Ningxia Hui Autonomous Region, the transmission distance has been extended, and the overhead line operation environment has become more complex. At the same time, the problems in the construction of infrastructure projects as a research hotspot of power grid construction, by the domestic and foreign academic circles greater attention. In this paper, on the basis of in-depth analysis of the current problems of overhead line foundation engineering in the region, countermeasure suggestions for future development and improvement measures of overhead line foundation engineering in Ningxia region are put forward.
Two, Ningxia overhead line foundation engineering development status and problems
Ningxia region mainly used foundation engineering type of rigid step and insertion of two types of foundations, the softer areas use bored piles as the foundation of overhead line foundation engineering. Desert area shear strength capacity is low, the foundation should be deeper than ordinary areas. In the northwestern region of overhead power line collapse and other foundation engineering accidents, should be attributed to landslides, quicksand, river scour and other natural disaster factors, man-made engineering implementation in order to avoid the occurrence of such accidents, in the design of the base should be considered more reinforcement and different areas of the natural environment factors on the impact of foundation engineering. At present, the region's overhead transmission line foundation engineering problems are mainly reflected in the following three aspects.
First of all, at present, the power transmission line foundation design technical regulations used in the design principle throw along the total safety factor method, rather than through the probability of limit state design principle of sub-coefficient design. Secondly, correctly analyze the power wind effect and accuracy will have an important impact on the overhead transmission line carrying tower and foundation design. In actual economic activities, the damage of transmission lines caused by wind loads is often more serious, therefore, the windproof and wind-resistant capacity of transmission lines should be fully considered in the design of overhead transmission line foundation engineering. Thirdly, when implementing overhead line foundation project in the dense loess area, on the basis of fully satisfying the tower foundation settlement, inclination, wind resistance, it should also fully consider the tower foundation design in general outside the tower foundation design to meet the special influencing factors in Ningxia region. In addition, the Ningxia region of permafrost freezing problem makes the foundation project position elevated, overhead lines in the region and even the northwest region of permafrost treatment has become one of the region's large infrastructure projects should be considered an important issue.
Three, Ningxia overhead line foundation engineering problems caused by
Ningxia overhead line foundation engineering problems mainly due to the following aspects. First of all, the transmission lines in Ningxia region through the more complex topography, geological conditions vary. From the design level, construction level, engineering quality control level to consider more problems, the information asymmetry in the field of research at home and abroad, as well as related technical backwardness and other influencing factors, resulting in China's overhead foundation engineering design in special terrain and landscape there are more backward factors and objective constraints. Secondly, the national and local budgets in the field of scientific research funding support and the follow-up of the first research project funding support, failed to continue to increase the investment in scientific research funding, especially in the transmission line infrastructure engineering research is relatively rare, resulting in China's Northwest region in the complex terrain infrastructure construction of technical bottlenecks exist in the terrain.
Once again, due to the differences in the level of economic development at home and abroad, especially in the academic community in the construction of major infrastructure projects, resulting in foreign advanced technology in buildings, bridges, etc. failed to be applied in the domestic construction of raised lines. For example, the focus of the overhead line foundation project is the soil survey, compared with bridges and other foundation projects, the accuracy requirements are weaker; different regions due to their different soil quality, the impact factors to be considered in the construction process of the tower are also different. Conclusion Ningxia region as an important administrative division in the northwest of China, in the future a short period of time to discover new threats, analyze the threat to be used for border protection and terminal protection, to be able to carry out a better security defense of the enterprise network. Terminal security is directly related to the security status of each user, but also directly affects the overall network security of the enterprise.
Generally, terminal security includes firewall technology, anti-virus technology, and behavioral monitoring technology, etc. Under the network security architecture based on big data, terminal security not only requires timely update of the virus database, but more importantly, there should be a unified control between terminals. When a terminal is infected or captured, can quickly feedback to the cloud set in the control, rapid deployment to control the further expansion of the epidemic, to avoid repeated infections of the same virus or Trojan horse. Similarly, when the border equipment encountered an attack, through data capture and analysis, timely update the policy and send it to the terminal, so as to achieve intelligent collaboration, active defense, significantly improve the security defense capabilities of the terminal and the border, effectively respond to known or unknown security threats, and maximize network security through the linkage of the border and the terminal.
This paper gives a threat-centered security concept, and big data technology to build a perfect network security protection technology system, the system can effectively make up for the shortcomings of the traditional architecture in the structure, a better response to the new problems exposed in the era of big data. With the long-term in-depth application of big data protection system, security threat discovery will become more and more timely, the window of time available to attackers will become longer and longer, the cloud control scope gradually expanded, and even access to the security service providers of the public cloud security, to truly realize the network security worry-free.
More about the engineering/service/procurement category of the tender writing production, to enhance the winning rate, you can click on the bottom of the official website customer service free consultation:/#/?source=bdzd