查询词典 blast area

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。

The SCC has the following advantages: remarkably reducing the noisy pollution and the worker s labor intensity in construction, deducing the rough surface or segregation because of missing-vibration or excessive-vibration in conventional construction, resolving the quality-defect problems resulting from lacking-vibration in the section of complex shapes and densely-packed reinforcement area. At the same time, large of industrial solid waste such as fly ash and blast furnace slag is utilized in the proportioning of SCC. It is helpful in comprehensive utilization of resource and environment protection, so the SCC belongs to "green concrete", it is a branch of HPC which will be developed in the future.

这种混凝土可以显著降低混凝土施工中的噪音污染；大幅度减轻工人的劳动强度；减少传统混凝土施工中因漏振或过振造成的麻面或离析；解决了配筋密集、结构复杂部位因振捣不足而造成的质量缺陷问题；同时，由于自密实混凝土在配制中，大量利用粉煤灰、高炉矿渣等工业固体废弃物，有利于资源的综合利用和生态环境的保护；从而被誉为&绿色混凝土&，是未来混凝土向高性能发展的方向之一。

The lowest rating boiler efficiency, the smallest heating area and the disposition of blast blower and inducing fan in energy conservation design standard for new heating residential buildings are analyzed and the relative suggestions are advanced.

本文认为为达到按户计量的良好效果，供暖系统应在设计时考虑到室内温度的可调性，因此应改变传统的没有跨越管的单管顺流式系统，提出了适应既有和新建住宅建筑按户计量的系统形式。

A blast of unbearable cold and ice sweeps the area.

一阵无法忍受的冰寒冲击席卷此区域。

It specifically analyses the construction problems of bridge deep foundation ditch excavation in the section of earthquake liquefied soft soil area,puts forward the programs of vacuum light well precipitation, steel tube pile fender and the composition of them to solve the damages of sand-blast boil and landslide that easily happened in the construction.

详细分析了地震液化带软土地区桥梁深基坑开挖的施工问题，提出了真空轻型井点降水、钢管桩围堰和两者相结合的方案来解决施工过程中可能出现的喷砂冒水和滑坡等灾害，试验结果表明，用该方法进行深基坑开挖支护是十分有效的。

Delay time interval effects for the time-frequency characteristic of blast vibration signal was studied aided by vibration data analyze software via matlab5.6 based on data Reassigned Smoothing Pseudo Wigner-Ville Distribution, the test data of Hainan iron corporation No.1 mining area.

基于平滑伪Wigner-Ville分布信号重排，用matlab5.6编写的振动信号处理软件，并在海钢北一采场就微差间隔时间对爆破振动的影响进行试验的基础上，研究了振动信号时频特征的微差时间效应。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。