查询词典 shotcrete

In 18% of the thickness measurements, the shotcrete thickness was less than or equal to 20 mm.

在18 ％的厚度测量，喷浆厚度小于大于或等于20毫米。

ABSTRACT The concept of metamorphic and mobile robot is based on the successful study of NATION 863 ITEM which is shotcrete scrobot and NATION NATURE SCIENCE FUND that is the snake-robot with pedrail around it in the robot center of Shandong Science University.

变形移动机器人的概念，是山东科技大学机器人研究中心在成功地完成了国家863项目"喷浆机器人"和国家自然科学基金"四周履带式蛇形机器人"的研究的基础上提出的，是一种对"移动机器人"的概念创新和结构创新。

Analysis of the characteristics of soft rock roadway, combined with practical application, designed to spray a new anchor shell supporting structure and proposed mechanism of interaction with the rock that anchors the shell surrounding rock and shotcrete support system as an entity, anchor-body system and the deep rock formation deep rock control system, housing system and the formation of shallow shallow rock rock control system, through the bolt will be deep and shallow rock together, sprayed on the rock-body system to play the role of three-dimensional constraints, bolting technology, including high water, quick-setting grouting material between two groups, roof anchoring resin full-length high-strength bolts and small-diameter prestressed anchor to strengthen support for the conservation and help the two longer anchoring resin bolting.

分析软岩巷道的特点，结合实际应用，设计了锚壳喷新型支护结构，并提出了与围岩相互作用机理，认为围岩与锚壳喷支护体系作为统一体，锚体系统与深部围岩形成深部围岩控制系统，壳体系统与浅部围岩形成浅部围岩控制系统，通过锚杆将深、浅部围岩共同作用，喷体系统对围岩起到三维约束作用，锚杆支护技术，包括高水速凝材料注浆加固两帮、顶板采用树脂全长锚固高强度锚杆和小孔径预应力锚索加强支护及两帮树脂加长锚固锚杆支护。

Due to the difference of heat conduction coefficient, specific heat capacity and expansion coefficient between concrete and rock, under cyclic variation of temperature, the junction plane is liable to crack in the slope supported by shotcrete.

由于混凝土材料与岩土材料的热传导系数、比热容与热膨胀系数的差异，在温度的循环变化下使得喷射混凝土边坡容易于喷层与岩土层的结合面处产生应力集中而开裂。

"Shotcrete is a mixture of portland cement, aggregate, and water conveyed by compressed air to a spray gun."

喷制混凝土是一种混凝料与普通水泥的混合物，由压缩空气输送到喷枪的喷嘴处。

According to the actual working conditions of bolting-shotcrete supporting in coal-mine tunnel,the working mechanism of different buckets was studied,their merits and demerits were analysed,and the double-crank grab bucket with assistant linkage was proved to be an ideal choice of grabbing materials in coal-mine tunnel because its motion trace was definite and symmetric and occupied lesser space.

从巷道锚喷支护中物料抓取的实际作业环境出发，对拟采用的几种抓斗的工作机理进行了分析研究，比较了各方案的优缺点，指出辅助连杆的双曲柄抓斗的运动轨迹确定、对称，且具有在竖直方向上占用空间最小的特点，是井下巷道施工中物料抓取的理想选择，这种设计方法能够为相关抓取装置的设计起到参考作用。

Affected by the backfilling, the tangential stress of shotcrete has a tendency is for pressure stress to be tensile stress; it is dangerous to induce the axial cranny.

对照现场实际，在近水平煤系地层中修建隧道，如有厚层硬岩层控制，只要对局部软岩层加强支护控制，是可以保证围岩的整体稳定的。

The principle and design of bolting and shotcrete lining is expounded in detail in this article.

本文还详细阐述了喷锚支护的原理和设计原则，分析讨论了采动压力引起巷道变形及破坏的情况，对无支护及有支护情况下的软岩巷道的位移、应力及应变进行了模拟计算，并提出了相应的防治技术措施，这对软岩巷道的设计与施工具有一定的工程实际指导意义。

Based on the analyse and evaluation of some destroyed models of bedded rock and massive rock and cataclastic rock,which is in the high-level road in the mountainous area,and combined with the engineering examples,the author put forward synthetic preventing measures,emphasized on the discussing on new methods, planting grass and anchor-shotcrete.

通过对山区高等级公路边坡中层状岩体、块状岩体和散体碎裂岩体的不同破坏模式进行分析评价，结合工程实例，提出公路边坡综合防护措施，重点论述植草防护、锚杆喷射砼防护等新型防护形式，为山区和相似地质条件地区公路建设提供参考和借

Using FEM, the coupled action of thermal stress and crustal stress has been taken into account. The regularities of distribution of the horizontal displacement of surface of slope and the shear stress of junction plane between shotcrete and rock are discussed too. According to the analysis, under the combined action of thermal stress and crustal stress, top and foot of slope are liable to be destructed. Ordinary, the destructional form of the top is tensile failure and the bottom is shear failure. There are some time effect of displacement and stress in the surface of slope and distribution of temperature in slope, which agrees with actual measured rules.

采用有限元的方法，考虑地应力与温度应力的耦合作用，分析了在一定的边界温度作用下不同时刻边坡喷层面的水平位移，以及喷层与岩层结合面处的剪应力的分布规律；指出在温度应力与地应力的共同作用下，喷混凝土边坡坡顶与坡脚均为容易发生破坏的地方，通常坡顶的破坏型式为拉张破坏而坡脚则为剪切破坏；边坡内的温度分布、边坡表面的位移与应力的变化均存在一定的时间效应，这一规律与实测规律比较吻合。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。