开采沉陷中的层面滑移三维模型

岩体内部开采沉陷计算的关键是层面的滑移位置及滑移函数。本文根据多层复合板理论，推出了三维条件下，开采沉陷中层面滑移函数和层面滑移位置判断式，获得了平面上最大滑移方向计算式。结合相似材料模型观测结果，验证了所给公式的适用性。     

胶莱盆地与金矿成矿

胶莱盆地是Ｊ３－Ｋ１期间由牟平－即墨断裂带在右旋走滑运动中形成的Ｓ型拉分盆地,盆地的产生与盆地边缘金矿的形成具有密切的成因关系。在盆地的形成过程中,盆地基底和周边地区为金矿的形成提供了丰富的成矿物质;中生代的岩浆活动和火山活动则提供了成矿的热源和斌矿空间。通过对蓬家夼矿床的分析,认为胶莱盆地周边具有较好的成效远景。     

Study of Deformation Mechanisms in Titanium by Interrupted Rolling and Channel Die Compression Tests

The mechanisms of small plastic deformation of titanium (T40) during cold rolling and channel die compression by means of "interrupted in situ" EBSD orientation measurements were studied. These interrupted EBSD orientation measurements allow to determine the rotation flow field which leads to the development of the crystallographic texture during the plastic deformation. Results show that during rolling, tension twins and compression twins occur and various glide systems are activated, the number of grains being larger with twins than with slip traces. In channel die compression, only tension twins are observed in some grains, whereas slip traces can be spotted in almost all observed grains. The different stress conditions and different strain rates existing under the two modes of deformation lead to the activation of different deformation mechanisms.     

大—漳含煤地层沉积特征及后期控煤构造分析

大田广平—漳平赤水含煤区位于福建省中部含煤条带中段,主要含煤地层为二叠系下统童子岩组。通过对该区含煤地层的岩性、层理、结核、古生物、含煤特征的分析,结合后期滑覆构造决定了煤系赋存条件、分布范围和变形特征,为寻找新的煤炭资源与勘探提供思路。     

豫西煤田滑覆构造分析与研究

煤田构造受控于区域构造,也是区域构造的组成部分,河南地跨不同变形体制下的构造区,不同构造区内的典型构造控煤样式对构造区内各煤田的煤炭资源预测提供了依据。文章对豫西煤田的滑覆构造样式进行了研究与分析。     

滑翔制导炮弹非线性自抗扰过载控制器设计

针对滑翔制导炮弹控制系统存在不确定内、外扰动以及舵偏指令响应滞后情况下的过载跟踪问题,基于自抗扰控制技术,设计了非线性自抗扰过载跟踪控制器。该控制器结构简单,计算量小,需调整参数少。数值仿真结果表明：该自抗扰过载控制器可在强扰动和舵机响应延迟的情况下,使得输出过载精确有效地跟踪过载指令,具备良好的抗干扰能力;并且舵控指令从0缓慢变化,有效地减缓了舵机的控制负担。该控制器对较大范围内的气动参数和舵机时间常数的摄动具备较强的适应性和鲁棒性,可为滑翔制导炮弹的控制系统设计提供一定的参考依据。     

Competitive Contribution of Catalyst and Adsorption Roles of TiO2 on the Degradation of AO7 Dye During Plasma Treatment

In order to investigate the role of TiO2 during plasma treatment,the degradation of the dye AO7 has been studied by gliding arc discharge in the presence of a TiO2 catalyst(CGAD).The results revealed that the adsorption of the dye on TiO2 is a physical adsorption in accordance with Langmuir isotherm,with a constant of adsorption KL=0.52 mg/L and a maximum adsorption capacity b=18.1 mg/g.The temperature variation of the reaction medium made it possible to consider thermodynamic parameters.Indeed,the adsorption is exothermic(enthalpy:△H 0),and spontaneous(free enthalpy:△G 0).The negative entropy(△S0) confirms the afnity of the dye molecules for TiO2.20 min of CGAD treatment in the presence of an optimal quantity of TiO2(2 g/L enabled us to bleach the solution of AO7(100 μM) completely.The discoloration rate with and without the addition of TiO2 was 100% and 28%,respectively.40 additional minutes of treatment allowed a total abatement of the chemical oxygen demand.The elimination of AO7 molecules during the plasma-catalytic treatment follows Langmuir-Hinshelwood(L-H) model kinetics.According to this model,the speed constant is kr=14.97 mg · L 1· min 1and the adsorption coefcient is KL-H = 0.010 L/mg.The latter being negligible compared to kr,adsorption is therefore weakly performed during the plasma treatment.     

扑翼滑翔UUV概念设计与研究

将水下仿生扑翼推进技术与水下滑翔技术相结合,提出了新型扑翼滑翔UUV的概念,描述了其工作过程及性能要求;在此基础上,从仿生学的角度出发,对扑翼滑翔UUV总体布局、外形、扑翼推进器、滑翔控制系统、舵机结构、控制通信系统等进行了系统的设计;最后,应用MATLAB软件对所设计扑翼滑翔UUV在扑翼工作状态及滑翔工作状态的运动性能进行了仿真,结果表明,所设计UUV基本能够满足所设计的性能要求。为扑翼滑翔UUV的进一步研究提供了重要参考。     

基于Windows的滑翔增程弹飞控系统半实物仿真研究

通过引入外部硬时钟,在普通Windows工控机上,实现了精确定时以及稳定的多线程串口通信,满足了滑翔弹飞控系统实时仿真的要求.该系统不仅成本低,而且稳定性高、通用性好以及第三方软硬件资源丰富,并在实际仿真过程中得到了应用.     

Surface modification of multiwalled carbon nanotubes via gliding arc plasma for the reinforcement of polypropylene

To increase the applicability of multiwalled carbon nanotubes (MWCNTs), functional groups were generated on the generally inert surface of MWCNTs using gliding arc (GA) plasma. MWCNTs were modified using plasma polymerization with styrene (St) as monomer. The surface compositional and structural changes that occur on MWCNTs were investigated using FT‐IR, Raman spectroscopy, BET surface area, and elemental analysis. Dispersion of the treated MWCNTs in different solvents was evaluated. Transmission electron microscopy images showed that the plasma‐treated MWCNTs had a better dispersion than the untreated ones in nonpolar solvents. Subsequently, MWCNTs‐reinforced polypropylene (PP) composites were prepared by internal batch mixing with the addition of 1.0 wt % MWCNTs. The morphology of MWCNTs/PP nanocomposites was studied through scanning electron microscopy. Observations of SEM images showed that the plasma‐treated MWCNTs had a better dispersion than the untreated MWCNTs either on the composite fracture surfaces or inside the PP matrix. Moreover, the mechanical tests showed that the tensile strength and elongation at break were improved with the addition of polystyrene‐grafted MWCNTs. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013