Applied Mechanics and Materials Vols. 641-642

Abstract: Zhenshui is the biggest tributary of Xiaolangdi Reservoir, and its original storage capacity is 1.767 billion m³ and accounts for 33.5% of the tributary. By October 2013, the amount of sediment in Zhenshui reached 0.2365 billion m³, and the sand bar was 5.78m in height. Influenced by operational mode of reservoir and terrain, the formation of sand bar at Zhenshui estuary has certain inevitabilities. The sand bar can prevent water and sediment exchange between mainstream and tributary, and the internal storage capacity of tributary is not effectively used. Analyzing sand bar and its cause can supply some technical supports for prevention.

Abstract: It is crucial to deal with the relationship between the multiple functions and corresponding natural landscape in the master planning on water conservancy control project. In this paper, master planning of buildings of approaches channel in Zhenjiang water conservancy control projects was taken as an example. The functions of ship navigation, flood control and disaster reduction, water regulate, urban traffic, ancillary services, and other functions that the buildings of water conservancy projects has to meet are analyzed. And the ways to coordinate the relationship among different functions are well taken account. The conception on how to integrate the buildings with the surrounding environment, natural landscape has been probed. The measures and all the trials in the planning could provide a reference for promoting harmonious coexistence of the modern water conservancy project with natural environments.

Abstract: River channelization, water eutrophication, ecological revetment degradation, loss of natural, human landscape, etc. are prevalent the construction of China's urbanization process. This paper takes Huang Jia River as example, combing landscape ecology theory and water conservation requirements, put forward the ecological revetment restore technique. Basis on this technique, the author proposes the systematic measures to enhance the ecological value of the river, solving the conflicts between technology requirements and natural ecology reasonably.

Abstract: Rich land resources in Henan Yellow River floodplain as well as China's new rural construction strategy provides an opportunity for new rural construction in Yellow River floodplain of Henan province. In this paper, the flow changes before and after the floodplain 2D hydrodynamic mathematical model to simulate the village station construction, water changes can clearly reflect the village station, near the village before and after the construction area and the upstream and downstream, contribute to the analysis changes in hydrodynamic conditions before and after the village station construction and effect on the river regime change.

Abstract: Henan Yellow River floodplain is the area for flood flowing, flood detention and sand sediment; it is also necessary for the production and living. With the rapid economic development along the Yellow River, floodplain development is increasing, occupying some land and water area. Due to the lack of unified planning, they have brought certain difficulties to flood control management and scientific decision-making. This paper first proposed specific superposition scope and calculation method for projects within river courses. Compared with the previous single calculation of backwater and scouring, it more truly, accurately reflect the actual situation of projects within river courses.

Abstract: Physical and mechanical tests have been performed on 2 kinds of bed sediments from Yi water system, on the bed sediments from the earth dam in Ri-zhao, and on the polluted soils from the Lin-yi city to investigate the engineering characteristics. The test shows the bed sediments in the Yi river are considered unsuitable as embankment materials according to the river design standards and the STMC manual, and so, a stabilization criterion of bed sediments needs to be established.

Abstract: Located at the exit of the last gorge of the middle reaches of the Yellow River, the Xiaolangdi Multipurpose Dam Project occupies a critical position in controlling both runoff and sediment of the River. typical tributary Zhenshui is the biggest tributary of Xiaolangdi Reservoir and its original storage capacity is 1.767 billion m³.This paper shows the process of the longitudinal profile of tributary Zhenshui,which faces the serious sediment bar growth at its mouth. Discussion is processed to show the possibility.

Abstract: Through grey estimation of the parameters of logistic equation, a grey logistic forecasting model is established. The effective irrigation area in Liaoning Province was simulated by the model. The simulation results had good agreement with the available data, with a correlation of 0.95. The effective irrigation area was predicted to be 1.583 million hectares in 2018, very close to the predicted upper limit of 1.588 million hectares. Thus, there is little potential for the development of the effective irrigation area, rendering the structural adjustment of agricultural resources very necessary.

Abstract: In order to relieve water shortage, many countries develop water-saving industries and increase water use rate of irrigation. The research on soil water infiltration has important effect on infiltration and runoff, as well as for irrigation. The study carried out in Liangping district of Chongqing by using double ring infiltration method and exploring the reasonable infiltration model in the study area. The relationship of initial soil moisture and irrigation coefficient was studied as well. The results showed that: the Kostiakov empirical formula could simulate the process of soil water infiltration properly. The soil infiltration rate of Liangping is 0.0320cm/min in the selected location.

Abstract: There are numerous small-sized reservoirs in china and many of them have the problem of sedimentation .The decrease of the capacity directly affects the benefit effectiveness of the reservoir. The author researched a recent investigation of the present sedimentation situation of the small sized reservoir in Jiangxi and Guizhou provinces, analyzed the origin and put forward some suggestions and countermeasures.