Drainage Engineering Research Articles

Analysis on Common Construction Quality Problems and Control Measures of Building Water Supply and Drainage Engineering

Analysis on Common Construction Quality Problems and Control Measures of Building Water Supply and Drainage Engineering

Application Analysis of Energy Saving and Water Saving Technology in Building Water Supply and Drainage Engineering

Application Analysis of Energy Saving and Water Saving Technology in Building Water Supply and Drainage Engineering

Analysis and Discussion on Cost Control and Management Measures of Municipal Water Supply and Drainage Engineering

Analysis and Discussion on Cost Control and Management Measures of Municipal Water Supply and Drainage Engineering

Pipeline Installation and Construction Technology in Building Water Supply and Drainage Engineering

Pipeline Installation and Construction Technology in Building Water Supply and Drainage Engineering

Technology and Quality Control of Water Supply and Drainage Engineering Construction

Technology and Quality Control of Water Supply and Drainage Engineering Construction

Research on Design of Municipal Road Water Supply and Drainage Engineering

Research on Design of Municipal Road Water Supply and Drainage Engineering

Construction Problems and Improvement Countermeasures of Water Supply and Drainage Engineering in Housing Construction

Construction Problems and Improvement Countermeasures of Water Supply and Drainage Engineering in Housing Construction

Solutions to Problems in Construction of Building Water Supply and Drainage Engineering

Solutions to Problems in Construction of Building Water Supply and Drainage Engineering

Study on stability of exit slope of Chenjiapo tunnel under condition of long-term rainfall

The exit slope of Chenjiapo Tunnel is located directly above the exit of Chenjiapo Tunnel on Enshi to Laifeng expressway. During the excavation of the exit of the right line of the tunnel, the left side of the front edge of the slope slips. Under the joint action of excavation and rainfall, a large landslide of 6.27 × 104 m3 and a huge unstable slope of 8.69 × 105 m3 are formed. The landslide body and unstable slope body not only cause the tunnel to be shut down, but also directly threaten the operation safety of the later expressway. Therefore, to study the stability change process of the exit slope of Chenjiapo tunnel under the condition of long-term rainfall, the finite element calculation of the slope is carried out by GeoStudio software. The results show that under the condition of long-term continuous rainfall, the safety factor of the slope decreases with the increased rainfall time, but the reduction rate gradually slows down, and finally tends to be stable. The safety factor of the slope is reduced from 1.187 in the natural state to 1.015, which indicates that the slope is still in a stable state under the condition of long-term continuous rainfall, but the safety reserve is not high, and it is easy to lose stability and damage due to the influence of external adverse factors. As the rainfall continues, the seepage line inside the slope is rising, and the saturated area of the soil at the toe of the slope is increasing. Until the slope begins to drain outwards, the seepage field inside the slope is basically stable. The maximum horizontal displacement of the slope increases with the increased rainfall time, but the increase rate gradually slows down until it tends to be stable. The maximum horizontal displacement of the slope occurred in the middle surface of the slope at the beginning of the rainfall, and gradually transferred to the toe of the slope within 7 days of the rainfall and continued until the end of the rainfall. At the end of the rainfall, the maximum horizontal displacement of the toe of the slope is 0.128 m, and the toe of the slope will be damaged first. At the beginning of the rainfall, the plastic zone of the slope is only scattered at the slope surface and the slope toe. And then as the rainfall continues, the distribution range of the plastic zone in the slope surface, the slope toe and the slide zone gradually widen, and the slope stability gradually decreases. The maximum horizontal displacement and plastic zone of the slope are concentrated at the toe of the slope, the slope presents obvious traction failure characteristics. According to the results of the field survey, there are small-scale gravel soil collapses and shear outlets at the front edge of the slope, and the survey results are consistent with the simulation results. It is suggested to set up perfect drainage engineering in the middle and back of the slope, and set anti-slide piles and drainage holes at the toe of the slope to reinforce the slope.

Dispersion of pure silica xerogel vs NaYF4- xerogel nanomaterials in silica aerogel and their effect on the optical and structural properties

Upconversion materials, which have the ability to transfer light's intensity, have reliable implementations on instruments from which they can synthesize light spectrum to better efficiency fulfillment. It has become useful to isolate the transformed nanomaterials with low clarity in a medium with a low optical attenuation coefficient; this step helps attendees to arrive and enhances the contribution of individual particles. Silica aerogels are suitable for dispersing nanomaterials around the volume due to their high transparency and all open porosities. To investigate the impact of compounds on their respective structures, NaYF4-based nanocrystals are combined with various anabolic steroids in silica xerogel and aerogel. Although, the fact that the average surface area of the compounds was diminished, the phases of nanocrystals and forms were preserved during the xerogel treatment. As nanoparticles are integrated into xerogel composites, their luminescence increases. The improvement in the strength of the composite luminance is claimed to be attributable to the nanoparticles that shield it from the cooling effects of the silica matrix after measuring the effects of the assembly and composite drainage engineering.

The Initial Rain Water Storage Tank Volume Determination and Pollution Interception Efficiency Based on the Swmm Model and Computer Software Analysis

At present, many cities in China have both severe water shortages and waste of large amounts of rainwater resources during heavy rains caused by urbanization. Turning rainwater resources into cities can reduce urban runoff and reduce peak floods. At the same time, it can increase urban water supply, beautify and clean the urban environment, improve urban microclimate, reduce ground subsidence, control rain and flood processes and reduce urban flood control. Drainage infrastructure investment greatly reduces urban flood disasters, which will bring considerable economic, social and environmental benefits. Therefore, as one of the hot topics in the preparation of special plans for drainage engineering in the new period, urban rainwater should be carried out using the SWMM model and computer software. The plan provides the possibility for further compiling special plans for rainwater utilization and guides the utilization of urban rainwater resources.

Preface

The 2021 2nd International Conference on New Energy and Sustainable Development (NESD2021) was successfully held in Chengdu, China on July 09-11, 2021. With the limitation of conventional energy sources and the increasingly prominent environmental problems, new energy sources with environmental protection and renewable qualities are gaining more and more attention from various countries. The research of new energy science and the development of industry are effective supplementary means of the entire energy supply system, and also the ultimate energy choice to meet the needs of sustainable development of human society.Under such condition, the organizer, AEIC as a link in the field of scientific research, gathered experts and scholars and engineering technicians in the fields of new energy science and engineering, sustainable development and environmental engineering around the world under the same roof. Jointly promote research progress in this field. The conference sincerely invited experts and scholars from domestic and foreign universities, scientific research institutions, business people and other relevant personnel to participate in the exchange.The conference model was divided into two sessions, including oral presentations and keynote speeches. In the first part, some scholars, whose submissions were selected as the excellent papers, were given 15 minutes to perform their oral presentations one by one. Then in the second part, keynote speakers were each allocated 30-45 minutes to hold their speeches. There were over 40 experts and scholars in the area of New Energy and Sustainable Development representing different famous universities and institutes around the globe to attend our conference.In this conference, we are greatly honored to have invited four professors to serve as our Conference Chairmen. During the conference, we were pleased to invite three industry elites as our keynote speakers. Prof. Steivan Defilla, from Tianjin University. His speech title is Post-Pandemic New Normal – How to Engineer the Role of New Energies? Prof. Di Yun, from Xi’an Jiaotong University, presented his insightful speeches on A novel nuclear fuel concept for high burn-up applications in fast neutron reactors. Dr. Congguang Zhang, from Northwest A&F University as our third keynote speaker, presented his insightful speeches on Design, Construction and Sustainability Evaluation of A Distributed Hybrid Biomass-Solar Energy System.We are glad to share with you that we received lots of submissions from the conference and we selected a bunch of high-quality papers and compiled them into the proceedings after rigorously reviewed them. These papers feature following topics but are not limited to: New Energy Science and Engineering, Storage Technology, Solar Energy Engineering, Environmental Chemistry and Biology, Water Supply and Drainage Engineering, Environmental Protection and other related topics. All the papers have been through rigorous review and process to meet the requirements of International publication standard.We would like to express our sincere appreciation to Honorary Conference Chair, Conference Chairs, Program Chairs, Technical Committee Members, and international reviewers. Their excellent professional advice enabled us to prepare this high-quality program. Our special thanks go to our keynote speakers as well as all the authors for sharing their latest research results. We hope all the participants have had a wonderful time at the conference and enjoyed Chengdu, China. We truly believe that the participants have had fruitful discussions, and enjoyed the opportunity for future collaborations.Committee of NESD2021Committee member, Conference Chairman, Program Committees, Technical Program Committees are available in the pdf

Effects of land-use management on soil erosion: A case study in a typical watershed of the hilly and gully region on the Loess Plateau of China

The effect of land use on erosion over space and time is relevant. In this study, two types of land-use management practices, the gully land consolidation (GLC) project and the land consolidation (LC) project, were applied on the Loess Plateau. Based on the soil erosion that occurred from 2010 to 2019, the spatial distribution, spatiotemporal evolution and susceptibility map of soil erosion were analyzed by geospatial analysis, statistical methods and frequency ratio (FR) models. The results showed that the implementation of the GLC project can have two effects on soil erosion. Firstly, a large amount of slope erosion was caused by slope excavation in the GLC watershed; secondly, the amount and scale of gully erosion were effectively controlled by hydraulic engineering. In addition, the unreasonable hydraulic engineering of the LC project can cause large areas of soil erosion. The influencing factors of gully erosion can be ranked as follows: reservoir > elevation > dam land > flow length > geology > LS. Three aspects of engineering optimization measures for the GLC project were proposed: 1. Slope excavation should be reduced, and diverse slope protections should be implemented in this project, especially for the bottom of the slope, which should adopt different measures than the top of the slope. 2. For trenches within 1.2 km of the gully head, more attention should focus on soil and water conservation measures than on land leveling. 3. Hydraulic engineering and irrigation and drainage engineering should effectively cooperate with leveling projects and adjust the applied measures to the local conditions and the natural shape of the original rivers. As a new land-use management approach, our results highlight that little is known about the effect of the GLC project on soil erosion, and our results can provide specific guidance for the next step of project implementation.

Discussion on Supervision Quality Control in Construction Stage of Building Water Supply and Drainage Engineering

Discussion on Supervision Quality Control in Construction Stage of Building Water Supply and Drainage Engineering

Teaching Practice Reform of “Irrigation and Drainage Engineering”

With the progress of science and technology, the development of agriculture in China is imminent, and the construction of irrigation and water conservancy plays an extremely important role.Irrigation and drainage is the core professional course of agricultural water conservancy engineering undergraduate major. The teaching practice reform of the course should be adjusted with the development of society. The teaching concept of the new era should be implemented; the teaching mode should be changed; the corresponding content should be changed; and the core content and problems should be taken as the guidance to cultivate the high-quality talents to meet the needs of social development.

Application of Energy Saving and Water Saving Technology in Building Water Supply and Drainage Engineering

Application of Energy Saving and Water Saving Technology in Building Water Supply and Drainage Engineering

Discussion on Optimal Design of Water Supply and Drainage Engineering of High-rise Building

Discussion on Optimal Design of Water Supply and Drainage Engineering of High-rise Building

Anti Leakage Treatment and Preventive Measures in Water Supply and Drainage Engineering

Anti Leakage Treatment and Preventive Measures in Water Supply and Drainage Engineering

Progress on Rural Drainage Water for Rural Revitalization in Northwest China

Shen, Y.; Zhang, D., and Zhao, Y., 2020. Progress on rural drainage water for rural revitalization in northwest China. In: Hu, C. and Cai, M. (eds.), Geo-informatics and Oceanography. Journal of Coastal Research, Special Issue No. 105, pp. 23–27. Coconut Creek (Florida), ISSN 0749-0208.Drainage water has a great effect on rural living water environment in northwest of China. According to some characters of rural drainage, the solution project on engineering technology and management measures is presented to develop the rural drainage water and living water environment in northwest of China. For normal rural areas, low cost technology of drainage engineering includes using natural ecological treatment systems with low energy consumption and paying attention to the recovery and utilization of waste water resources and low impact development. For watershed of drinking water sources, reasonable rural domestic sewage treatment methods should be implemented for different features of the rural areas. The methodology used in this for rural drainage in northwest China could be applied to other sites around the world that are affected by these extreme conditions.

Construction Quality Control of Building Water Supply and Drainage Engineering

Construction Quality Control of Building Water Supply and Drainage Engineering