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While, the material insecurities mainly include water gushing and water leakage in tunnel, nonuniform settlement and excessive subsidence, surface collapse and the instability of supporting structures etc. while, most of these material insecurities are also caused by human’s unsafe behaviors.
Establishing professional teams for security risk management and highlighting prevention and forecast of the major accidents.
Therefore, it is urgent to establish professional teams for security risk management as soon as possible.
The prediction and prevention of major accidents have to be enhanced by technology research, which main include collapse of weak and broken rocks, water and mud inrush in karst district, rock burst and water seepage in the underwater tunnel and so on.
It is anxious to raise the level of progress and highlight the prediction and prevention of major accidents relying on professional management and technical means.

Finally, we draw conclusion in section 5. 2, Overall Design of the monitoring system based on the Buoy The whole designed system can be divided into three parts: The first part is the water quality buoy, including the water quality sensor (multi-parameter sensor such as PH, salinity, electric conductivity, dissolved oxygen, water temperature, etc.), water sealing joint, buoy and the anchor, data acquisition unit, battery (solar battery), charging controller, lantern and the GPS etc.
The part’s main function is to obtain the data from the water or the air.
In order to protect the buoy itself, the alert message will send to the data center automatically when the buoy’s shift speed exceeds the predefined speed. 3.2 The principle of the monitoring system based on the buoy The multi-parameter ocean sensors are placed on the surface of the water which we plan to measure through the water sealing connection.
The system’s principle block diagram can be described in Fig 1: Fig 1 The system’s principle block diagram 3.3 The buoy and the communication module design of the system In order to achieve the function that described above, we choose the optimal pivotal device. 1) YSI water quality sensor The common water quality sensor’s output is 4-20 ma(electric current) or 0-5V(voltage), The water temperature range from 0℃ to 60.0℃, the action time is less than 0.5min, The PH range from 0.00 to 14.00, it’s action time is also less than 0.5min.
America: McGraw-Hill Professional Publishing, 2001 [6] Geoff Sanders, Lionel Thorens, Manfred Reisky.

A Regional Water Supply Project (Regional SPAM) is a water supply system dedicated to (i) treating, and (ii) supplying and selling bulk of water to several designated regions.
Hence, the existence of regional SPAM is expected to assist the existing local water companies (PDAMs) in treating water and supplying bulk water to the PDAMs water mains.
Water Treatment Plants Raw water will be extracted from the Rokan River, and it will be pumped to the water treatment plant located approximately 70-100 m from the river.
In the water treatment plan (WTP) facility, the raw water will be purified to become drinking water.
Adequate site investigations may reduce risks associated with ground conditions; recruitment of skilled and professional staff may reduce human error, as will procurement of equipment and materials from accredited suppliers at fixed prices.

Green building signifies high cost.Professionals in architecture and real estate also overestimate green building’s cost that even reaches up to 300%.
Lighting power density of most of the offices should be within 9 ~ 11 w / ㎡. 1.1.2 Technical measures of water conservation Water reuse system:we can collect water drained from the shower in swimming pool’s locker room ,overflowing water of swimming pool, and raw water such as rainwater on roof.
After proper treatment, the renewable water can flush toilets,do virescence and wash cars by increasing the water pump’s pressure, which can achieve perfect water-saving effect.
Compared with the traditional irrigation methods,drip irrigation system greatly reduce work output, and save a lot of water resources each year due to the use of recycled water.
Water-saving appliances:The choice of all water appliances should fit requirements of relevant water-saving products and equipment.

Introduction At present, there are lots of old-fashioned wells and motor-pumped irrigation wells in the country, and in some mining areas, there are lots of mining and piling wells not timely backfilled after being worked on, as well as conduit wells for water supply and drainage, gas, electricity, etc laid in city construction sites.
In this case, to have a highly efficient and practical rescue equipment to improve the efficiency of the rescue becomes the common will of all rescue professionals.

Through these two different types of products designed to talk about the case, a hand drill design and a optical design case: First, the two products must comply with its basic functions, to be able to hand-drill holes, and glasses to be able to care of people's eyes; Secondly, in the shape of the optimization process, the shape of the two products should strive to appearance, both in the design difference is the hand drill is a tool for professionals operating on the functional requirements of shape on heavier weight or color requirements, Therefore, the analysis focused on the optimization design, the designer hand-drills will focus on the optimization of the design optimization of the function, operation of the existing hand drill and drill bits because the direction of force is not a line, resulting in hole deviation when the problem is easy, hand drill to shape the existing structure has been improved, which is improved styling.
Conducive to the water body of fish life, birds flying and their body is to live in the trees, the body of animals and their own survival functions are closely related.

Fault reasons (system exhaust is not complete), (pipeline connection is loose),(Pipe breakage burr), (Hydraulic oil quantity too much or too little),(Hydraulic oil viscosity is not enough),(Hydraulic oil aging）,(Hydraulic oil with water),(Hydraulic oil mixed with foreign body),(Hydraulic oil mixed with air),(Closed tank pressure not appropriate),(radiator fault), (oil filter fault),(hydraulic pump fault),(overflow valve fault),(directional valve fault),(hydraulic cylinder and hydraulic motor fault),(striking temperature).
Conclusions The advantages of this paper are that: 1) Application of fuzzy theory in fault diagnosis of hydraulic system, makes quantitative analysis expert experience and qualitative analysis integrate , improves the credibility of decision results, makes mechanical fault diag- nosis raise to a new level of science in method, provides a new efficient way of helping to make decision for decision makers and repairman; 2) Introduces membership degree of symptom to reason established by history data and expert preferential ordinal number, reflects actual experience of most professionals; 3) Develops a computer software which user-friendly interface, strong visualization and easily operating, and can be used by repairman.

Although various kinds of exact algorithms for CT reconstruction and visualization have paved the way for the development of high quality real-time visualization method of ICT, without the expensive professional graphics cards or graphics workstation, the existing acceleration methods are difficult to meet the needs of real-time visualization.
Kitware, whose team created and continues to extend the toolkit, offers professional support and consulting services for VTK.
[4] Nvidia CUDA Programming Guide Version 1.0 [5] Larrabee Shane McGlaun, Nvidia Clears Water Muddied, Blog DailyTech, August 5, 2008 [6] http://en.wikipedia.org/wiki/CUDA [7] http://www.vtk.org/doc/nightly/html/classvtkGPUVolumeRayCastMapper.html.

(5) Processing: The corresponding treatments can be done according to the classification results, including：cleaning, repairing, storing and selling the recyclable parts which can be directly reused; selling remanufactured parts to remanufacture enterprise; selling the recyclable material to steel plants etc; and the useless waste can be landfilled by the professional enterprise. 2.3 The structure model of reverse logistics system The structure model of reverse logistics system is shown in figure 1. 
Fluid pollutant is due to liquid waste such as gasoline, diesel, lubricating oil, brake oil, antifreeze oil, explosion-proof agent, air conditioning liquid, waste battery electrolyte (acid containing waste water) and other materials are not fully recycled. 
Table 2 The weights of evaluation indicators Level 1 indicators Weights Level 2 indicators Weights the environmental indicator (B1) 0.255 dust Pollutant (C11) 0.093 liquid Pollutant (C12) 0.292 solid Pollutant (C13) 0.615 recyclable utilization indicator (B2) 0.627 parts reuse rate (C21) 0.333 materials reuse rate (C22) 0.667 the economic indicator(B3) 0.118 recycling technology (C31) 0.072 man-machine cost (C32) 0.301 recycling efficiency (C33 ) 0.627  3.4 The application example The renewable resources company in Chongqing is a professional enterprise which is engaged in scrapped automobiles and materials dismantling and recycling.

For this analysis, we have use the Autodesk Inventor Professional and Autodesk Moldflow Adviser products.
The cooling system uses water delivered at 25ºC, with a flow rate of 8 l/min, which is distributed along a channel network with a 8 mm diameter.
Hanser, Munchen 2007) [5] ***, Autodesk Inventor Professional User’s guide, (2019) [6] ***, Autodesk Moldflow User’s guide, (2019) [7] http://www.custompartnet.com/estimate/injection-molding/