大型电动挖掘机在线自动计量系统研究

电动挖掘机装载、运矿汽车运送是露天矿山的主要生产作业方式。当前，对运输作业量的计算仍采用人工计数和统计的方法，致使数据可靠性不高，信息传递速度慢，而且人为因素也常造成生产验收时的“亏吨”现象，给矿山的生产经营带来很大的负面效应。另外，为了使矿石中的金属回收尽可能充分，进入选厂的矿石平均品位应尽量控制一致。     

束状炮孔爆破效应的动光弹实验研究

根据动光弹仪在不同瞬间所拍摄的等差条纹图片,对束状炮孔的几种布孔形式(如直线形,半圆形和圆形)的爆炸应力场进行了定性分析,描述了各布孔形式下的应力波的传播、应力分布情况及其作用结果,比较了它们之间在这些方面的异同点。布孔形式、布孔参数不同,应力分布随之改变,爆破效果也异,尤其是不同布孔形式之间的这些差别更为明显。爆后分析结果表明,动光弹试验可为现场的工程设计提拱一定的理论依据。     

基于Matlab的带式输送机软启动过程胶带动力学仿真研究

基于带式输送机胶带粘弹性动力学方程，用Matlab软件仿真重锤张紧方式下输送机胶带的动张力。某工程实例的仿真结果与美国CDI公司用有限元数值计算的结果进行了对比，两例计算结果吻合较好。同时，用Matlab软件仿真在采用正弦形、三角形、抛物线形、梯形和矩形启动加速度时胶带的动张力，比较得出最优启动加速度曲线，为输送机部件参数设计提供依据。     

边坡稳定性的动态规划研究及其工程应用实例

研究了动态规划法确定边坡非圆临界滑动面的方法，并应用于大新锰矿边坡稳定性研究，取得良好效果，工程应用实例表明该方法对复杂地质条件的边坡稳定性分析具有广泛的应用前景。     

城市简易垃圾填埋场场地动力触探试验研究

随着城市的发展和扩张，早期的垃圾填埋场进入城市规划区域，作为建筑用地，如何评价该类场地的工程性能成为关键。结合对城市垃圾填埋场的杂填土的动力触探试验，分析研究该类场地的工程性能并做出相应的工程评价。     

Dynamic behavior of ozonation with pollutant in a countercurrent bubble column with oxygen mass transfer

The dynamic behavior of ozonation with pollutants in a countercurrent bubble column is studied for the model establishment. Bubble columns have been widely used for an ozonation system in the plants and laboratories. In addition, a countercurrent bubble column has been commonly recommended than a cocurrent one because it has a higher ozone transfer efficiency. Therefore, the investigation of this paper focuses on the countercurrent bubble column. As an ozonation process starts, the gas mixture of ozone and oxygen is introduced into the bottom of a column, and then transferred into the liquid. The pollutants in the wastewater are eliminated subsequently via oxidation by the dissolved ozone. There certainly exists a temporary and unsteady period before the ozonation system reaches steady state. However, available ozonation models employed to describe ozone and pollutant profiles have commonly been developed for steady state. The treating qualities of wastewater in the early stage of ozonation are usually not predicted, and the time required for the steady-state establishment remains to be determined. Moreover, oxygen mass transfer is usually neglected in previous ozonation models so that the increase of dissolved oxygen is uncertain. These information is desirable for the proper design and operation of ozonation system in a bubble column. Thus, the aim of this study is to model and investigate the dynamic processes of ozonation with pollutants including oxygen mass transfer. The dynamic axial dispersion model proposed is employed to predict the variation of the ozone, pollutant, and oxygen concentrations profiles. The validity of the model was demonstrated by comparing the predicted results with the experimental data. The o-cresol was chosen as the model pollutant. The temporal concentration variations of the residual o-cresol and dissolved oxygen in the effluent liquid, and the off-gas ozone in the free volume were measured accordingly. Furthermore, the variation of the enhancement factor of ozone and the amount of off-gas were predicted. Note that it usually needs 2-5 hydraulic retention times to approach steady state under the conditions of this study. Further, the effects of dimensionless system parameters on the performance of the ozonation processes are examined. As a result, the proposed dynamic model of ozonation with pollutants is useful for proper prediction of the variables of an ozonation system in a countercurrent bubble column.     

应用神经网络预估强夯加固效果

本文将神经网络理论应用于强夯施工中 ,目的在于探索一条简便有效的新的强夯设计方法。在利用BP神经网络计算大量工程实例的基础上 ,建立了关于强夯加固效果的神经网络预估模型 ,并运用工程实例验证了模型的有效性     

土钉墙基坑支护原理及其在合肥地区应用情况分析

文章对土钉墙基坑支护的原理、特点和适用范围进行了简单的阐述,对合肥地区应用土钉墙的情况进行了调查分析,并提出了一些建议,以便在选择该方案时参考。     

一种基于动态正方形搜索的TIN构建算法研究

为了提高不规则三角网的构网效率,提出了一种改进算法,该算法执行效率高,构网速度快,实现较简单,并用VC 6.0编程语言对算法进行实现,最后用实验数据对算法进行了测试.     

钢筋混凝土巨型框架多功能减振结构体系振动台试验研究

本文进行了一幢多功能减振巨型框架模型和一幢普通巨型框架模型的振动台对比试验。试验结果表明,多功能减振巨型框架结构在减小结构地震反应方面效果非常明显。