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safety spacing
相关语句
  安全间距
     By analysing the roof subsidence curve and the geometrical configuration of deformations of rock masses, it is found that this safety spacing is related to the mining height of lower seam and the property and structure of interstratified rocks.
     由顶板下沉曲线及岩块变形的几何条件分析得出此安全间距应与下煤层的采高、层间岩性及结构等有关。
短句来源
  安全距离
     Study on Collision Avoidance Analysis for Lane Changing and Minimum Longitudinal Safety Spacing Model
     车道变换碰撞预警分析及最小纵向安全距离模型的研究
短句来源
  “safety spacing”译为未确定词的双语例句
     The results show that the least safety spacing of traveling is 65 m,the least separation distance of carriage is 1 m and tank truck is 5 m at smoke removal ventilation speed upstream the fire,and the optimum passage spacing is 270 m.
     结果表明:火区上游客车最小引燃间距为1 m,油灌车最小引燃间距为5 m,隧道内安全行车间距应大于65 m; 雪峰山隧道的最佳横通道间距为270 m。
短句来源
  相似匹配句对
     and safety.
     安全性指标。
短句来源
     safety.
     ·安全方面。
短句来源
     Study on Collision Avoidance Analysis for Lane Changing and Minimum Longitudinal Safety Spacing Model
     车道变换碰撞预警分析及最小纵向安全距离模型的研究
短句来源
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  safety spacing
This paper proposes a concept of initial minimum safety spacing (IMSS) for a robot to avoid the collision with moving obstacles from any direction.
      


On the basis of data obtained in roadways under observation, concerning movement of strata overlying excavated workings, amount of closure and pressure, it is found that the movement of rock mass along the strike can be divided, according to support systems, into three zones: pillar support, interbed dispersion and solid packing. In order to make the overlying strata form an equilibrium structure, it is necessary that the minimum spacing between seams in ascending mining should be the height of this equilibrium...

On the basis of data obtained in roadways under observation, concerning movement of strata overlying excavated workings, amount of closure and pressure, it is found that the movement of rock mass along the strike can be divided, according to support systems, into three zones: pillar support, interbed dispersion and solid packing. In order to make the overlying strata form an equilibrium structure, it is necessary that the minimum spacing between seams in ascending mining should be the height of this equilibrium zone. By analysing the roof subsidence curve and the geometrical configuration of deformations of rock masses, it is found that this safety spacing is related to the mining height of lower seam and the property and structure of interstratified rocks.

本文根据上煤层内观测巷的实际测定的采场上复岩层移动、移近量及压力等资料,说明采动岩体沿走向可根据支撑条件分为煤柱支撑、离层及矸石压实三区,使上复岩层形成平衡的结构,而上行开采的最小煤层间距应达到此平衡带的高度。由顶板下沉曲线及岩块变形的几何条件分析得出此安全间距应与下煤层的采高、层间岩性及结构等有关。

Using the minimum safety spacing(MSS) as an index of the safe lane-changing of the vehicle, the kinematics of the vehicle involved in lane-changing maneuves was analyzed. The computation of MSS was correlated with the current vehicle velocity, the time searching the critical collision point, the relative velocity and relative acceleration between both vehicles to seek the conditions for vehicle collision avoidance, and the calculation method for MSS at lane-changing process was accomplished and associated...

Using the minimum safety spacing(MSS) as an index of the safe lane-changing of the vehicle, the kinematics of the vehicle involved in lane-changing maneuves was analyzed. The computation of MSS was correlated with the current vehicle velocity, the time searching the critical collision point, the relative velocity and relative acceleration between both vehicles to seek the conditions for vehicle collision avoidance, and the calculation method for MSS at lane-changing process was accomplished and associated simulation and analysis were performed, laying a necessary foundation for further research and development of the autonomous lane-changing and overtaking assistance systems.

通过分析换道时车辆的运动关系,使用最小安全距离作为安全换道的指标,并将安全车距的计算与车辆的当前速度,到达临界碰撞点的时间,两车的相对速度、加速度关联起来,研究了车辆碰撞的条件,给出了换道最小安全距离的计算方法,并进行了仿真与分析。本文的研究结果为下一步的自动换道辅助系统和自动超车辅助系统的研究奠定了理论基础。

Using Xuefeng tunnel as an object example,fire spreading to other vehicles was analyzed by radiation theory according to the fire characteristic of road tunnel for avoiding fire spreading between vehicles.Meanwhile,the typical natural evacuation process in four typical fire scenarios was analyzed,the danger times in the four fire scenes with different passage spacing and evacuation time combined with characteristic of people’s evacuation behavior were calculated separately with fire simulation software FDS4.0...

Using Xuefeng tunnel as an object example,fire spreading to other vehicles was analyzed by radiation theory according to the fire characteristic of road tunnel for avoiding fire spreading between vehicles.Meanwhile,the typical natural evacuation process in four typical fire scenarios was analyzed,the danger times in the four fire scenes with different passage spacing and evacuation time combined with characteristic of people’s evacuation behavior were calculated separately with fire simulation software FDS4.0 and tunnel evacuation software Tunev,its economical efficiency was also analyzed.The results show that the least safety spacing of traveling is 65 m,the least separation distance of carriage is 1 m and tank truck is 5 m at smoke removal ventilation speed upstream the fire,and the optimum passage spacing is 270 m.These results will provide theory gist for tunnel fire fighting design,the establishment of evacuation direction system and emergency scheme.

以雪峰山隧道为工程实例,为避免隧道火灾时车辆间的引燃,根据公路隧道火灾特点,利用辐射传热原理,对车辆间的火灾蔓延进行分析,同时为确保隧道火灾时人员安全疏散,利用火灾模拟软件FDS4.0及隧道疏散模拟软件Tunev,分别计算和比较了4种典型火灾场景在不同横通道间距情况下的危险时间及包含人员疏散行为特征的疏散时间,并分析其经济性。结果表明:火区上游客车最小引燃间距为1 m,油灌车最小引燃间距为5 m,隧道内安全行车间距应大于65 m;雪峰山隧道的最佳横通道间距为270 m。该结论可为公路隧道消防系统的设计、紧急疏散方案和引导指挥体系的建立提供理论依据。

 
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