Key Technology of 3D Geosciences Modeling in Coal Mine Engineering

A new method for simulation technology of laneway engineering seamless excavation based on 3D geoscience modeling(3DGM)was proposed to overcome the deficiency in current research.The generalized triprism(GTP)data model was used as the basic modeling element in this method.The models of geological body were created by the method of rock pillar body partition(RPBP)modeling.The laneway engineering models were built with component method,while the corresponding triangles in sections were connected and transformed into tunnel GTP models.All the GTP models were converted into tetrahedron models based on the smallest vertex identifier(SVID).The simulation and spatial analysis of laneway engineering seamless excavation could be realized through the local hierarchical intersection(LHI)algorithm.The application case showed that the method was fast and effective,and it could meet the needs of design and spatial analysis for mine laneway engineering.     

花冠U340／341型自动变速器动力传递分析

一汽丰田花冠轿车配备的是U340／341型自动变速器，这是一款前轮驱动的电子控制4速自动变速器，该自动变速器的基本参数如表1所示。     

Revit+Dynamo参数化隧道模型构建体系探析

本文以公路隧道工程BIM参数化建模为研究内容,以Revit+Dynamo的建模方法为工具,探究了Revit+Dynamo参数化隧道模型构建的解决方案,自主编写开发了Revit+Dynamo参数化隧道模型构建体系,实现了隧道实体部分的快速精准建模,并将此方案应用到寨冠隧道实体部分模型的构建实践中。     

帕尔玛筑路新材料在县乡道路上的应用

根据帕尔玛土壤固化酶的室内试验及试验路施工情况，可以看出：帕尔玛稳定山在层比二灰碎石、水泥稳定山砂基层造价低，强度高于石灰土，使用寿命长，承载力和抗变形能力强，抗渗性好，适用于乡村公路建设 。     

BMW 525i(E34) 修旧如旧

正面对玩经典的老车,不同的人有不同的方向和方法,有的喜欢将其保持原装,并极尽所能恢复到最好的状态,有人则喜欢在状态良好的前提下,大刀阔斧地进行改装,比如用宽体和气动将车"按"在地上,以表现出自己"恐高"的个性,当然还会有人拿去改个飘移、场地等等这样的赛车,至于孰优孰劣,我们无法站队、无法辩驳,毕竟各有各的喜好     

改装潜力巨大的黄海第二代多功能客车

近日,50辆黄海第二代MPB多功能客车将交付辽宁省公安厅,装备于该省各市的特警支队,成为特警指挥、巡逻出警专用客车。黄海客车首提MPB概念MPB是英文Multi-Purpose Bus的缩写,意为多功能客车,这一概念源于乘用车领域的MPV,是丹东黄海面对客车功能一体化的新趋势而率先提出的。