The distinctive dynamic geomorphology in the coastal area of Jiangsu Province has gives birth to a large number of coastal beaches. The development and utilization of beaches resources have great realistic significance to promote the coastal economic. However, because the investment and financing mechanism of regional has not yet been established effectively, the process of the coastal development worked at a low rate. Based on the realistic problems，we introduce the land securitization theory for Jiangsu coastal development land. In order to expand investment and financing channels of the coastal shore reclamation, and provide theoretical guidance to solve the problem of shortage of funds in the development of shore reclamation, We finally designed the path of the two kinds of land securitization：Entity assets securitization (CO) mode and Mortgage Securitization for Jiangsu coastal development．

Abstract：Recently, increasingly importance has been attached to the watershed condition since water ecological environment is under different degrees of destruction. A water-based system is put forward as a new theoretical framework for the watershed health evaluation. An appropriate grade standard of watershed condition assessment for Naolihe catchment, which is the main agricultural production area, was built under the water-based system. Finally an evaluation index system of watershed condition of Naolihe catchment was created on the basis of five principles for indexes selecting and local natural economy situation. As a result, an index set, in which considering agricultural production and sustainable development, was built, and then the applicability of several particular indexes were analyzed in the study area. It can provide technical supports for the sustainable development of Naolihe catchment by the health evaluation index system and the set.

In order to study the influence of changes of flow regime caused by the building and running of the reservoir on the reservoir water quality, to provide a scientific basis for environmental impact assessment of the project,prepare the environmental protection countermeasures and so on,this paper forecast the concentration of COD,BOD5 in the proposed Tongzi reservoir area by using the lake or reservoir completely mixed attenuation model,and predicted the eutrophication trend of the reservoir area using Dillon model.The calculation shows that the concentration of COD and BOD5 is 2.85mg/L and 2.23mg/L in low-flow period,2.22mg/L and 1.62mg/L in mean-flow period in 2020. However,the concentration of TP、TN is 0.06mg/L、1.01mg/L。By analyzing the data with the aggregative nutritional status index method,we know the reservoir is in the mild eutrophic.To this end, the paper is targeted to propose water environment protection measures based on the reservoir water quality protection .

With the development of economy and society, urbanization polder was accelerated in southern China, the conditions of underlying surface and drainage characteristics of urbanized polder area had changed, the calculation method of drainage modulus in agricultural polder was inapplicable in urbanized polder. Taking Qing-yang Park in the southern region of Jiangsu as an example, the average exclusive method used in calculating the drainage modulus was expounded. The multiple regression equation among the design drainage modulus, the regulation storage and the comprehensive runoff coefficient was obtained using multiple regression analysis. The multiple regression equation had through the significant test. Research results can provide basis decision for polder water system planning and further development and utilization of water resources, but also can provide a reference for the calculation of drainage hydrology calculation analysis in urbanized polder area along the river.

The water conservancy modernization in developed countries can be divided into six stages, they are the water conservancy development model in agricultural society, large scale hydraulic engineering construction, the disadvantages of traditional water conservancy development mode were found, river restoration movement, integrated river basin management and transformation to green, ecology & environmental protection. Besides enumerating some examples, this paper elaborates the characteristics in each stage and analyses their significance. From the perspectives of water problems change & the national demand, the transformation necessity of China water conservancy is demonstrated. At last, this paper proposes some policy suggestions about integrated water resources management, water ecology protection, water environment treatment, water resources utilization and prevention & control of water disasters.

In order to analyze spatial matching of water resources, establish water resources spatial matching model. The model was built according to the structure of regional water use and the spatially distributing correlation between arable land, population and the second industry, and based on Gini coefficient and Lorenz curve. A demonstration is applied to Chongqing. The results show that: Gini coefficient of water resource and arable land is 0.3926, and the matching degree is at relatively reasonable level; Gini coefficient of water resource and population is 0.5344, and Gini coefficient of water resource and the second industry is 0.7094, and the matching degrees are at a very poor level. And then some countermeasures that help improves its spatial matching degree are offered. Finally, some discussions are carried out concerning adaptability and validity of the model.

The special karst geomorphology and the karst geological environment in Southwest China, which people, land and water was very unbalance distribution at the pace and the time, that had been become a serious ecological geology environment problems. The epikarst zone that as a natural storage medium of water resources, however, had great meaning toward the karst peak cluster, the surface of karst plateau of ground water embedding deep. Guizhou province in Southwest China was taken as an example, through the analysis of the development and distribution characteristics of the epikarst zone, discussing the exploitation and utilization conditions, development modes and some problems of water resources in the epikarst zone. In addition, some suggestions were submitted.

This article analyzed main factors that affect the farmer′s demand for operational water-saving irrigation projects.Research shows that householder age, crop planting area, irrigation cost, water saving irrigation on yield, the government's emphasis on water saving irrigation has remarkable effect on requirements of water saving irrigation project for vegetable planting farmers.And the householder age, family income, crop planting area, irrigation labour shortage has remarkable effect on grain planting farmers.

In order to solve the problem of high energy consumption of the irrigation system, 10 types of impact sprinkler was selected as research object, the seven groups scheme of the main and auxiliary nozzle structure were designed, to achieve low pressure spraying. The experiment and analysis of hydraulic performances of the seven schemes were carried out. It was showed that the wetted radius was not changed obviously of the seven scheme. The seventh scheme was to increase the groove in the main nozzle, the radial water distribution is uniform, the performance was better. The combination uniformity of the seven groups were simulated in the combination distance of 1R, 1.1R, 1.2R, 1.3R and 1.4R ,respectively, the seventh scheme had the best uniformity, the uniformity coefficient was higher than 0.8, and the uniformity coefficient was 0.83 in the distance of 1.4R, compared with other schemes, the seventh scheme can increase the combination spacing between the sprinklers. The results reduced the working pressure of impact sprinkler, increased the spraying uniformity at low pressure, and the energy consumption of the system was reduced.

Abstract: In order to ascertain the maize water requirement in west Liaohe plain scientifically, and to formulate reasonable irrigation scheduling of maize, make the three-year (2009-2011) test observation in Fengtian test station of Tongliao city Korqin district. Through the contrast test of different irrigation treatments in the each growth period of maize, it can get the following conclusions. The population variability of water consumption and water consumption modulus in each growth period of maize showed the trend that the water consumption and water consumption modulus were high in elongation stage and tasseling stage and they were low in seedling stage and postulation stage. Furthermore, the water consumption of elongation stage and tasseling stage occupied over half of the whole growth period of maize. The water consumption intensity order from large to small is tasseling, elongation, postulation and seedling. The different water stress in each growth period of maize could all cause a reduction of yield in a certain range. The reduction of yield in a certain range depended on the growth period with water stress. The extent of influence in tasseling stage of low irrigation treatment was largest which could reach the very significant level of 9.5%. The low irrigation treatment in elongation stage reaches the significant level of 6%. The other treatments reach non-significant level. The research provides the sufficient theoretical basis for the reasonable distribution of the local water resources.

According to the characteristic chlorine time series in water supply network, a prediction model was put forward to study its variation based on wavelet neural network. Particle swarm optimization methods was used to optimize the characteristics of wavelet neural network parameters by means of rapid global optimization algorithm to overcome the blindness of network parameters selected and enhance the global search ability of the model. Case study results show that the prediction model based on wavelet neural PSO can be used in continuous multi-step prediction with smaller data requirements. Compared with the traditional time-series forecasting methods, the model propose in this paper have a more obvious accuracy, convergence and stability enhancements within the respective time scales.

Abstract:In order to improve the traditional rainwater harvested engineering in cellar of rainwater collecting control ，to improve the utilization of rainwater and improve cellar of water quality , this paper presents an easy implement , low investment , automatically adjust the flow and automatic sewage purification the advantages of new cellar rainwater harvested control and purification system,in the new cellar rainwater harvested control and purification system designed to leverage automatic gates and double settling basin ,improving rainwater utilization and the water quality in the cellar , there are certain areas provide guidance to the cellar rainwater harvested control and water quality purification problem.

The investigation and analysis of household water use level and consumption structure is the basis to improve water saving potential. In order to find Beijing residents water use structure and its impact factors, combining first national water census of urban and rural residents, Beijing chose typical household water users for the survey living in different region and using different types of water use. The findings showed that, the large proportion for water consumption is flushing and bathing water. The urban water consumption is significantly higher than in rural areas. The seasonal change of water structure is significantly.

According to the environmental problems caused by over exploitation of groundwater, takes the project of underground-channels recharge groundwater in Boxing as an example, introduces the project design and effects of the underground-channels recharge; by the numerical model, analyses the effects of underground-channels recharge technology and the recovery of underground level, and designs schemes such as the underground-channels recharge groundwater, surface and groundwater conjunctive regulation, the utilization of rain flood resources, and controls the exploitation of groundwater , predicted the remediation effects of different schemes in the over-exploitation area, provide scientific and technological support for groundwater recharge engineering.

In order to explore the way of soil fast desalting in new reclamation land of coastal area，the combined pipe drainage test designed three kinds of spacing (10 m, 15 m, 20 m) and three kinds of buried depth (0.6 m, 0.9 m, 1.2 m). Under the two methods of irrigation and rainfall, the test research the effect of pipe drainage and the change of salinity. Results showed that when the depth is the same, the smaller the distance, the greater the displacement ratio of irrigation water (drop), also the faster the drawdown speed; when the buried pipe space is the same, the deeper the buried depth, the greater the displacement ratio of irrigation water (drop), the faster the drawdown speed. The depth of the buried pipe also has the different influence on the initial drainage salinity and electrical conductivity. The deeper of the buried pipe, the greater the initial drainage salinity, also the greater the conductivity. The research supports in the buried pipe drainage for the tidal flat developments in the Jiangsu coast.

According to the theory of uniform flow in open channel, water level and flow of open channel can be intelligently monitored by means of detecting open channel’s depth beyond water. This paper designs a millimeter digital water level sensor based on above statement. Each 2mm put a contact. Because the conductivity of water, if one of the contacts touches water, the detecting circuit connecting to the contact would put through. And then water level signal can be processed by the single chip microcomputer MSP430F19 and transmitted through RS232 data bus to the host computer. Water level and flow can be managed by both the signal chip microcomputer and the host computer. Data can be displayed respectively on LCD located on signal acquisition port and host computer located on supervision port. Thus it can realize the intelligently monitoring of water level and flow.

In order to take full use of water resources of the Taihu Basin, and to make different flood control stages better, the annual Taihu Basin floods were classified. In this paper, the fractal theory was applied to the Taihu Basin, according to the calculated capacity dimensions of the periods, the number of the annual Taihu Basin floods was determined. The comparison between the traditional method and the fractal theory method showed that the results of two methods are basically the same, while the results of fractal method are more objective and can be simply calculated. Therefore, the fractal theory method can reveal the regularity hidden behind the flood sequence of Taihu Basin, and provides objective theoretical basis for the subsequent studies of the designed floods and the flood control stages

In recent years, multivariate distribution analysis in hydrological field is becoming a hotspot. Copula function is adopted to obtain the bivariate joint distribution of flood peak and volume here. Conditional expectation composition derivated from conditional probability distribution and is used to design flood hydrograph with changing proportion method. The results show that the design of flood hydrograph based on conditional expectation compositions of flood peak and volume meets the design requirements. Compared to same multiple method, the design of flood hydrograph based on conditional probability composition is better at describing the statistical relationship between flood peak and flood volume, is a new way to design flood hydrograph.

This article mainly introducs the application of pumping melting technology to solve the problem of ice that have plagued hydropower station operation for a long time in hongshanzui hydropower station,xinjiang. And first proposed the basic principle of pumping water melting ice at diversion channel in dry cold plateau. According to the results of prototype observation,concluded the rule of water’s temperature varys along the channel after pumping well water. And calculate the non-freezing length referencing to the empirical formula.Then compared to melting ice well sparings that are operated in the aqueducts.All these research provide the basis for the optimization of pumping melting wells and other related research.

Air-water two-phase flow model, which is based upon the Volume of Fluid method, is adopted to study the vibration abatement procedures that to inject air into the Francis turbine in Daqiao hydropower station. In order to simulate the air supply process precisely, the turbine should be discussed in its entirety, including the spiral case, stand ring, movable guide vane, and runner and draft tube. Three-dimensional numerical simulation has been carried out to produce several parameters. They are the pressure distribution and the velocity field of the flow passage components of the turbine, the flow state in the draft tube where air admission is just ongoing，and the feature of pressure fluctuation in the draft tube. What the calculation indicates is that the negative pressure and the pressure pulsation in the draft tube can be well improved, and the air injection through the main shaft center is superior to that through the short pipes. Air admission, however, cannot eliminate the cavitations significantly, occurring in runner blades.

In order to seek for a scientific blasting controlled technology and method, we monitored excavation blasting vibration of dam foundation pit at Shaping Ⅱ Hydropower Station. The regression analysis of the monitored data shows that the maximum explosive quantity is controlled by the blasting vibration of horizontal direction. When the distances between explosion sources?and?measuring points are 10m and 20m, the corresponding maximum explosive quantities are 4.2kg and 33.2kg. Blasting design is based on it to control the harm of blasting vibration. Through the contrastive analysis for monitoring results of acoustic velocity before and after the explosion in reserved rock dyke, the average decline rate of the rock longitudinal wave is less than 10%. It illustrates the excavation blasting at dam foundation pit has little effect on remaining rock. Through the comprehensive analysis of two monitoring results above, the project of excavation blasting is reasonable and has little effect on the remaining rock. It can also provide some reference for similar construction.

By performed unsteady calculation on seven different conditions of bulb turbine based on Smagorinsky-Lilly sub-grid scale model of large eddy simulation, pressure pulsation information at key monitoring points located in the passage of each working condition are obtained and analyzed. The results show that all the pressure pulsation in the whole passage of the bulb turbine contains rotation frequency, and the near the distance to the runner, the larger the amplitude of rotation frequency is. The pressure pulsation at the runner chamber is the strongest, and it’s the natural number times of the blade rotation frequency. The pressure pulsation in the draft tube is mainly caused by vortex rope, the influence of blade roration frequency can be ignored, the pulse strength in the central region of draft tube is greater than the periphery. Overall strength of pressure pulsation in the passage is approximately linear positive correlated to the head and the output, but it has no significant correlation to flow rate and efficiency

Hydraulic and hydroelectric engineerings are play a very important role in the improvement of the people’s work and life. Footbridge is not only a kind of ancillary buildings in hydraulic and hydroelectric engineerings,but also one of most common wading structures.As a low-level structure,footbridge is a kind of small and simple transport infrastructure.Under the development trend of current design projects’ diversification,should pay attention to design of footbridge.Analyzed rigorously and scientifically design make footbridge structure safer and more reliable.This paper mainly introduces crowd load’s differences in some footbridge related professional criterions and compare crowd load in these design codes,thereby providing reference for similar projects.

This paper introduces the basic information of Xiangshan arch dam cracks and analyses the causes based on design, construction and dam body dissolution. Meanwhile, it calculates the stress of arch dam and puts forward to reinforcement measures. At the end, it makes recommendations for the design and conducts some sound explorations.