Advanced Materials Research Vols. 1006-1007

Abstract: Assess the actual stress situation by electrical measuring test of prototypes in the Milford Proving Ground, Including four cylinder engine bend and torsion static test load 10 t, 17t ; Proving ground inland various pavement dynamic test, According to the static data analysis results, the stress mainly concentrated in the cab and carriages, there is also the location of the crack appears most, and each point in the dynamic test of dynamic load is large, dynamic stress is one of the largest in the washboard road test.

Abstract: To enhance the seismic performance by using the traditional method of building function, will affect the building using function. Therefore, not affecting the building using performance, the isolation device for seismic reinforcement, only through the underground part of the building project can solve these problems. In this paper, through government building envelope analysis and time history analysis, the seismic strengthening of building structures under earthquake action effects before and after the isolation device, fully explain the role.

Abstract: Taking a rise steel as a study, study response of the structure to the dynamic characteristics under fluctuating wind load. The results showed that: deformation of structure under the fluctuating wind load is shear deformation; Structural displacement response curve is similar to the curve of the pressure time history. Because of consider different heights the structure of spatial correlation affect, Displacement positions on different floors response curves are differ.

Abstract: In order to study the feasibility of different types cross section columns combination of multi-layer steel frames optimum design, considering the basic cycle, the first layer shear-weight ratio, steel weight of structure and other factors to establish different types of models. Through the each model fees of different engineering cost quota, then from cost of the project perspective to analyze the optimum design of multi-layer steel frames. The analysis results: Two kinds of calculations of the project cost of each model’s main structure are different, the project cost quota of Guangxi mainly depends on steel weight of each component type, but the project cost quota of Osaka region general considering the component types and cost of material and processing fees which are determined by section types, and welding quantity is single calculated, model CM4 corresponds well. On the whole, model CM4 has the lower expenses. So Guangxi district should refining component types and section types and then determine production and installation fees.

Abstract: Bolts as the key connection parts are directly related to the safety of high-speed train. Contact nonlinear static strength of CRH (China Railway High-Speed) coupler bolt was analyzed on traction and compression load with ANSYS software. According to maximum stress of bolts was appeared on tension load, CRH bolt strength was evaluated and compared based on three methods: finite element analysis (FEA), "Verein Deutscher Ingenieure 2230 standard (VDI 2230)" and “Mechanical Design Handbook”. The results show that the axial tensile stress is much greater than the shear stress and gradually increase with three methods.

Abstract: The establishment of pillars is one of the most effective methods to keep mining safety under loose aquifer. Water abundance of bottom aquifer of loose strata,strength and structure of overburden strata are the main factors controlling type and height of coal pillar.Taking Xiyi area in Pansan coal mine as an example, hydrogeology characteristics of the bottom aquifer of quaternaty system and engineering geological properties of overburden strata of No.8 seam were analyzed.The characteristics of weathered rock was particularly analyzed.The results indicated that the type of the water abundance and permeability in this aquifer were medium.When the No.8 seam in Xiyi area was at shallow depths mining, water-proof pillar had to be designed.The structure of overburden strata of No.8 seam belonged to the type of upper soft and lower hard,which can restrain the failure of overburden strata.The thickness of weathering zone was thick and distribution was also stable.Weathered rock had good water-resisting property and crack resistance.

Abstract: The coal mining has brought a series of ecological and environmental problems, including the most obvious one —land damage. Coal mine land reclamation can restore and rebuild the mine ecology, improve regional environmental quality, the establishment of social - economic - naturally coordinated development of a mine, ecologically virtuous circle of green industrial ecosystem. Open-pit coal mine of Baofa Coal Co., LTD. For its current land use, based on the "land reclamation technical standards" and other relevant standards and comprehensive study of area natural and socio-economic conditions, land suitability factors, the land reclamation countermeasures of open-pit coal mine are given out.

Abstract: Layered injection commissioning technology has become a key factor to the oil production. For different types of formations, the paper analyzes the absorbent law in different homogeneous formations with different boundary conditions. The paper also creates a composite reservoir model, and then describes changes of absorbent law under coupling effect. The method to do all of the above work is to solve the equation of dimensionless bottomhole pressure in different formation and boundary conditions.

Abstract: Aimed at the characteristic that highcontent of hematite of valuable minerals in overflow of concentrate Before the strong magnetism from Sijiaying Concentrator, by that flocculation test of pure minerals of hematite, quartz, chlorite and investigate that flocculation effect of lime, PAC, PAFC of inorganic flocculants and PAM of organic flocculants to three kinds of pure minerals in this article. The test results show that the bigger sedimentation velocity difference hematite between quartz, chlorite when do not add any flocculants. When adding inorganic flocculants include lime, PAC, PAFC, flocculation effect is better to hematite and quartz, but flocculation effect is bad chlorite; Flocculation effect is better to three pure minerals when adding PAM of organic flocculants.

Abstract:

On the basis of the analysis of geological features and the study of reservoir substance in the Dongrengou oil region, we conclude the major reasons for oil congestion in this region, including the downhole damage caused by the organic and inorganic sediment. All these damages have been caused in different operations of oil production, including the water injection operation, fracturing operation and other stimulating operations. To better solve this problem, we propose the solution of using chlorine dioxide to dissolve the congestion. Through the formula of the laboratory experiment, we finally put forward the proper composite acid formula to break down the congestion in this region and work out the scientific, reasonable construal technology.