查询词典 mansard roof

Common form of the roof surface: arch roof , shell-shaped roof of shoes, V-shaped hull roof , flat roof shell, wheel-shaped cable roof , saddle -shaped roof .

曲面屋顶常见形式有：拱屋顶、球鞋形网壳屋顶、V 形壳屋顶、扁壳屋顶、车轮形悬索屋顶、鞍形屋顶。

The cast-in-place reinforced concrete spatial core beamless roof is one kind of new beamless roof system, it is self-possessed lightly, the span is big, after is continues the belt capital of column the beamless roof, the plate beamless roof, the dense rib beamless roof, complies with the time to the beamless roof system request new beamless roof system, at present already entered the use in some engineering project upthrow, has obtained the good economic efficiency and the social efficiency.

现浇钢筋混凝土空心板无梁楼盖是一种新型的无梁楼盖体系，它自重轻，跨度大，是继带柱帽的无梁楼盖、平板无梁楼盖、密肋无梁楼盖之后，顺应了时代对无梁楼盖体系要求的新型无梁楼盖体系，目前已经在一些工程项目上投入使用，取得了良好的经济效益和社会效益。

Aiming at bottom roof caving and support impact problems induced with abrupt large scale caving upper roof in face 21303 of Daliuta mine, this paper put forward the motion parameter at roof caving and calculation formula of roof shear breaking force with the help of theorem of momentum, theorem of moment of momentum and D' Alembert principle. Roof caving process was simulated by Ansys Ls-DYNA program, and maxim impact force was got. The theoretical research outcomes in the paper were applied in face 21303 of Daliuta mine, and were accordant with actual observing status of roof caving process.

针对神东煤炭公司大柳塔煤矿活井21303综采工作面，上层采空区顶板突然大规模垮落对下层顶板及支架的突然冲击问题，文章采用动量定理、动量矩定理、达朗伯原理推出了顶板垮落瞬间的运动量及顶板切顶垮落所需要的剪力值计算公式，用ANSYS LS-DYNA程序对顶板垮落过程进行了数值计算，得到了最大冲击力，在大柳塔煤矿活井21303综采工作面对顶板垮落特征进行了实际观测和理论成果验证。

The trial results show that with the disposal of induced caving roof by presplitting blasting and induced caving roof blasting, about 17.8 m in thickness of rock cushion is successfully formed in the inferior abandoned stope, which can bring down the harm of dashing blast of an explosion caused by roof collapse; apparent run-through flaws arise between presplitting blasting holes, and controllable caving is formed in the roof, abrupt collapse of large area roof is prevented, the productional safe surroundings of underground mining is improved; eventually, the resources' reclamation rate is improved from about 70% to 84.6%, and the dilution rate is abated from 25%40% to below 15%, so efficiently withdrawing is actualized.

试验结果表明：采用预裂爆破与诱导崩顶爆破的方法，通过对顶板的诱导崩落处理，成功地在下方采空区形成了厚度为17.8 m左右的岩石缓冲垫层，有效地降低顶板冒落带来的冲击气浪危害；在预裂孔间产生明显的贯通裂隙，从而在顶板上形成诱导可控崩落，防止顶板大面积的突然垮落，改善地下开采安全生产环境；最终资源的回收率由70%左右提高到84.6%，贫化率由25%~40%降低到15%以下，实现了资源的高效回收。

This paper presented the relationships between roof shapes and form coefficient under wind loads, drainage and corresponding loads caused by rain. The paper also discussed the relationship between roof shape and roof structural height and span and the relationship between roof shape and connection styles. These relationships will influence both safety and price of roof structure.

阐述了屋面形状与风载体型系数、屋面排水及相应雨水荷载的关系问题，讨论了屋面结构形式与屋面跨度和厚度的关系问题、屋面形状与钢结构节点形式的关系问题，这些问题对大型场馆钢结构屋面的安全性、经济性均有显著影响。

It is important to reduce the span of the hard roof to avoid its impact load on supports. However, at longwall top coal caving face, the periodical weight of roof is a main factor that crushes the top coal, which is beneficial to the top coal recovery. How to use the roof pressure safely is of crucial importance in top coal caving. Based on field monitoring, theoretical analysis of strata movement, the numerical model of compound structure of hard roof stepped cantilever and the top coal cantilever beam is built, and the parameters of the model are also determined. The elasto-plastic finite element method is used to analyze the effect of hard coal fracture under the abutment pressure of hard roof, and the cracking coefficient is defined according to the stress state of the element.

通过对岩层移动的现场观测，建立了&两硬&条件综放采场台阶悬臂—悬臂梁组合的煤岩组合结构力学模型，并以此煤岩结构为基础，建立&两硬&条件综放采场顶煤压裂的有限元数值模型，分析了坚硬顶板不同来压步距对坚硬顶煤的压裂效应，并确定了合理的支架阻力，从而对坚硬顶板进行有效的控制，消除坚硬项板对采场的冲击隐患，同时保证采场矿压对坚硬顶煤的有效压裂，达到提高顶煤回收率之目的，由此形成了坚硬顶煤、坚硬顶板条件下综放采场围岩控制的基本理论和方法。

"The mansard roof has two slope s on all four sides, a shallower upper part and a steeper lower part. See also hammer-beam roof."

复斜屋顶在四个面上都各有两个斜面，一个较浅的上部斜面和一个较陡的下部斜面。

"The mansard roof has two slopes on all four sides, a shal lower upper part and a steeper lower part. See also hammer-beam roof."

复斜屋顶在四个面上都各有两个斜面，一个较浅的上部斜面和一个较陡的下部斜面。

"The mansard roof has two slopes on all four sides, a shallower upper part and a steep er lower part. See also hammer-beam roof."

复斜屋顶在四个面上都各有两个斜面，一个较浅的上部斜面和一个较陡的下部斜面。

"The mansard roof has two slopes on all four sides, a shallower upper part and a steeper lower part. See also hammer-beam roof."

复斜屋顶在四个面上都各有两个斜面，一个较浅的上部斜面和一个较陡的下部斜面。

Finally, the Knight strung a line between two of the monoliths and tied the horses up there.

最后，骑士们在两颗巨石之间拉了一条绳子，将他们的座骑绑在上面。

T7zN/hyS0 The island lies south by east from here.

那个岛位于此地的正南偏东方向。