Abstract.This paper reviews the solid waste disposal technologies at home and abroad. Solid waste is rich in a large amount of organic matter. If discarded or landfilled, it will cause serious environmental problems such as greenhouse gas emissions, landfill leachate emissions, pathogen transmission and groundwater pollution. Common disposal methods of solid waste include sanitary landfill, incineration, compost fermentation, anaerobic digestion, etc. Among them, anaerobic digestion technology is an economical and efficient solid biological treatment technology, which can not only realize the … Read more →

Abstract.Iron tailings are solid wastes produced after iron ore is refined. Based on the analysis of the development of road engineering in our country, the application status of iron tailings sand in road engineering in recent years is summarized. The optimal moisture content, maximum dry density and compressive strength of iron tailings cement stable macadam are evaluated by using the compaction test and unconfined compressive test. The results show that UNDER the condition OF a certain amount of cement and the content of iron tailing sand is 10%-20%, iron tailing sand can be used as semi-rigid … Read more →

Abstract.From the perspective of water resource utilization cycle, a water utilization system basically includes five links, water source system, water delivery system, water distribution system, user system and drainage system. Water resource regulation is to minimize the ineffective loss of water resources from all aspects of water resource utilization. The water resource regulation process should include the regulation of five links: water source system, water delivery system, water distribution system, user system and drainage system. The five systems are simplified into three parts, namely the … Read more →

Abstract.BIM (Building Information Modeling) technology has greatly promoted the development of construction engineering in recent years. The shift from traditional reverse design to positive design is an inevitable trend for the continuous improvement and development of BIM technology. However, the implementation of BIM forward technology is difficult. This paper combs the implementation difficulties of BIM forward design, and summarizes the corresponding countermeasures. Read more →

Abstract.In order to study the influencing factors of the flexural capacity of ultra high performance concrete with coarse aggregate (UHPC-CA) beams with high strength reinforcement, the orthogonal test method was used to analyze the influence of reinforcement grade, reinforcement diameter, section effective height and concrete strength grade on the flexural capacity of UHPC-CA beams with high strength reinforcement. The results show that the diameter of reinforcement is an important significant factor affecting the flexural capacity of UHPC-CA beams with high-strength reinforcement, and the grade of … Read more →

Abstract.This paper starts from the research status of SBS modified asphalt aging and regeneration mechanism at home and abroad , and summarizes the performance change law and regeneration mechanism of SBS modified asphalt. Asphalt aging is the main factor that affects the durability of asphalt pavement, and then reduces the service life of the pavement. Through the analysis of the aging status of SBS modified asphalt, the performance change law of aging SBS modified asphalt is analyzed from the microscopic and macroscopic perspectives. The influence factors of multiple aging, rejuvenating agent and … Read more →

Abstract.The problem of haze control is a complex system problem, which requires a lot of human, material and capital investment from all walks of life, and improving the broad participation of the public is an important entry point for haze pollution control. Through questionnaire survey, chi square test and other research methods, this study carried out research on Residents' cognition and behavior choice of haze governance, explored its relevance, emphasized the necessity of multi-body participation in haze governance, and improved the public's awareness of the importance of participation in haze … Read more →

Abstract.The computer has developed from a single machine to a multi-machine network. The development of the network has penetrated into people's life, and similarly, the problem of network security has also followed. Distributed Denial of Service (DDoS) attack is one of the most popular network attacks at present. How to effectively detect DDoS attack targets and take urgent protective measures has become one of the difficulties in the research community. In this paper, a method of detecting DDoS attacks by using CNN neural network with attention mechanism (AM) is proposed by using the characteristics … Read more →

Abstract.In the face of China's rapid economic development, China's mineral industry continues to improve, and the amount of tailings is also rising year by year. The economic and environmental problems caused by tailings are becoming more and more serious. According to the current tailings storage and utilization rate in China, this paper analyzes the types and comprehensive utilization direction of tailings in China, and takes Tangshan area as an example to carry out the investigation and comprehensive utilization research of tailings in this area. At present, there are more than 80 tailings … Read more →

Abstract.Taking the Loess Plateau region as the research object, using 1995, 2000, 2005, 2010 and 2015 land use spatial data sets, based on ArcGIS platform, land use dynamic degree model and land use degree comprehensive index model to study 1995 From year to 2015, the dynamic change process of land use in the Loess Plateau region and the characteristics of temporal and spatial differences. The results showed that in the land use types of the Loess Plateau, the area of woodland, water area and construction land increased, while the area of arable land, grassland and unused land decreased, and the area … Read more →