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Study on settlement process of dredger under current force XU Ting1,2 , XIAO Zhong2 ，SUN Liancheng1 1 Tianjin Research Institute for Water Transport Engineering, M.O.T, Tianjin 300456, China 2 Tianjin University, Tianjin, China.
The result from the calculation and analysis of the tidal current in the wreck-zone shows that velocities and directions between ebb-tide and flood tide in the water zone occurs some changes.
The elastic modulus of each soil layer takes 10 times of the compression modulus of the soil layer in the calaulation. 4 Numerical simulations and results 4.1 Current force The current force on the dredger is calculated according to the professional standard of P R China—Load Code for Harbor Engineering (JTJ215-98).
is the density of water, and it is 1.0 for freshwater and 1.025 for seawater.
The current resistance coefficient is CW＝2.32×0.7＝1.624 (2) According to the relevant tidal current data, the design velocity of current can be taken as 1.5 m/s and the corresponding current force FW is (3) In which, LB is the length of hull bottom surface; LSurf is the length of hull at water surface; h is water depth.

Chang’an University, China (2010) (in Chinese) [2] IAT: Asphalt professionals in the 21st century.
Water Res.
Water Environ.
Water Qual.
Water Environ.

Through a combination of advancements in CAM technologies, continuous developments in remote power sources, and the ubiquitous reach of telecommunications networks, design professionals in the near future will have the capacity to transmit construction aid – in the form of deployable building-making machinery – to refugee populations in dire need of the physical, economic, and cultural benefits of architecture.
Material aid is typically supplied to displaced populations in the form of food (priority one), clean water (priority two) and medicine (priority three).

Introduction In water conservancy and hydropower projects, rock mechanical parameters are important data.
References [1] The Professional Standards Compile Croup of People's Republic of China.
Beijing: water Conservancy Publishing Company, 1982
[2] The Professional Standards Compile Croup of People's Republic of China.
Beijing: Water Resource and Electric Power Press, 1993

Rural water supply project type is also gradually from a single village water supply mainly into various water supply modes coexist, large-scale water supply is increasing and the engineering construction standard is gradually improved, at the same time, with the deterioration of water quality and the improvement of water quality standards, rural water supply project process is becoming more and more complicated, all of these put forward higher requirement for the operation and management of water plant.
Taking into account rural technical personnel professional level is relatively low, should choose the control scheme with simplicity of operator and Simple steps, at the same time, should choose maintainability instrumentation to ensure normal operation of automatic control system and reduce water plant maintenance operation costs.
It is mainly to control water pump room, it can control pumps according to water level of clean-water reservoirs.
The plan can be either in a timely manner to overcome the interference by raw water parameters monitoring, and can feedback to adjust dosage by water parameters monitoring to guarantee water quality.
Fig. 2 Changes in source water and finished water turbidity The effective measures to improve the level of rural waterworks automatic control.

Hardware Design of Intellectualized Water Meter with Six Jianqi SHAa Zhe XIAOb Weilian WANGc Lesheng HEd Jihong SHI* a, b, c & d, School of Information Science & Technology, Yunnan University, North Cuihu Road, Wuhua District, Kunming, 650091, Yunnan, China Keywords: water meter with six; Meter Bus; modulation-demodulation principles; hardware design Abstract.
Acknowledgements First, I’d like to show many thanks to my supervisor Jihong SHI, Professor Weilian WANG and Instructor Lesheng HE for helping with the professional technological knowledge.
Water Meter Networking Meter Reading System Based on M-Bus[J].

In addition, in recent years, some technologies like the acoustic CT technology, high-density resistivity method and TDR (time domain reflectometry) have been constantly introduced into the field of cultural relics protection and quickly recognized by the professionals in the industry for wide applications.
In the disease mechanism research of the earthen architecture sites, the current researches focus on the soil-water interaction, water and salt transport, thermodynamic properties, and wind erosion mechanism.
In particular, the research results about the desiccation and cracking on the surface of ancient earthen architectures, the physical and mechanical property changes of the soil from the earthen architecture sites, water and salt transport mechanism in soil from the earthen architecture sites, and the wind-erosion durability have been recognized in the professional field.
However, the earthen architecture sites are actually in the wild environment where wind, water, heat, salt and many other factors are involved.
Therefore, it is the main direction in the future to make the coupling research of water, salt, heat and force in the research of the weathering disease mechanism.

To be more specific, 1357 projects are located in water areas, accounting for 17.9% and 2448 located in populated areas, accounting for 32.4%.
Besides fire control, the firefighters also need to prevent explosion and the leakage of toxic chemical under professional guidance.
Therefore, water tower fire trucks, foam powder tenders and mobile fire monitors are necessary for remote control besides the regular fire-extinguishing water tankers.
Fourthly, for supplies, foam station, oil recycle belt and leaking stoppage sandbags are needed in addition to fire water supply and hydrant.
People of all walks of life – officers and soldiers in active service, government personnel, contract full-time workers, professional security personnel – all could be included in the staff members to make a more diversified formation.

In this case, water heating is included in other end uses category.
The final energy demand for domestic hot water, heating and cooling requirements totals about 3500 TWh per year.
A dehumidifier/absorber (generally with Water-Lithium Chloride or Water-Calcium Chloride absorbent solution) and a regenerator are replacing the desiccant wheel (Fig. 6).
The major impediments are the high installation cost and the low performance compared to the conventional cooling systems, the limited number of demonstration plants in the community, lack of awareness and knowledge about the benefits and technical details of the solar cooling among potential users and professionals (architects, engineers).
Moreover, solar cooling units become more cost-competitive if associated with solar heating systems (for space heating and domestic hot water preparation).

Besides, burned wheat straw in production is the main source of air pollution. (2) water pollution.
Because of imperfect infrastructure, serious delay of sewage treatment facilities, lack of complete sewerage system and random-discharge of domestic and industrial water discharged into rivers, ponds and lakes, water in rural areas is seriously polluted.
In some countries, where there aren’t inland waterways, sewage water is disposed with infiltration or evaporation, which causes a great threat to air and groundwater.(3) solid wastes pollution.
Shortage of professional talented personnel and specialized talents make agricultural and tourism development into disordered state., which restricts the development of this district.
Ecological Environment Protection and Sustainable Development in Longji Area. (1)composing rural reconstruction and scientific tourism plan.Through investigation and research, professional technical personnel compose rural reconstruction and scientific tourism plan, and divide tourist service protective areas, rural reconstruction areas, landscape tourism areas and ecological protection areas, and such functional areas.