Directional blasting is the common used scheme in demolishing chimneys and water towers.
定向爆破是烟囱、水塔等高耸建筑物最常用的拆除爆破方案。
This paper presents various applied methods of underwater directional blasting and calculation.
本文介绍了各种实用水下定向爆破方法及其计算。
In experiments of directional blasting on flat ground the piles of the thrown grits are comparatively concentrated.
在砂砾石中进行的平地定向爆破实验得到了较为集中的堆积体。
In this paper, a new technological method of preventing and treating landslide by directional blasting is introduced.
本文介绍了用定向爆破治理滑坡新技术。
The technology problems of blasthole depth, cutting blasting, smooth wall blasting, and directional blasting is discussed.
文章对炮眼深度、掏槽爆破、光面爆破、定向爆破等技术问题进行了探讨。
According to the "Big Time Delay" and the "Big Over Hanging Beam" principle, the building was successfully demolished through directional blasting.
通过采用“大时差”和“大悬臂梁”原理，对该大楼成功地实施了定向爆破拆除。
Recoil of towering constructions of bursting in directional blasting potentially has harm effects to the preserved buildings, installations and facilities.
高耸建筑物定向爆破倾倒时，对周围保留建筑物、设施等的安全性产生影响的危害效应之一是后座问题。
Underwater directional blasting can be achieved through the methods of reduced density of medium in thrown direction, formed directional pit, directional comulative blasting, delayed blasting etc.
水下定向爆破可以通过减少抛掷方向的介质密度、形成定向坑，利用定向聚能药包及延期爆破等方法实现。
Under complicated conditions, a building was partially demolished through controlled blasting. Mechanical pre-cutting was carried out before the building was collapsed by folding directional blasting.
在复杂环境条件下对一楼房进行保护性部分爆破拆除，采用机械预切割、折叠定向爆破倒塌的控制拆除方案。
This paper discusses some important problems of the design of blasting in dam construction by directional explosion.
本文就定向爆破筑坝时爆破设计计算的主要问题进行了初步探讨。
This paper expounded the design principle and precdure of chimney directional falling in demolished blasting.
本文论述了烟囱定向倾倒拆除爆破的设计原理和程序。
The splitting Mechanism, charge preparation and testing result of the loaded constitution of directional splitting in rock blasting are introduced.
介绍了一种岩石爆破定向破裂装药结构的破岩原理、制作方法及试验效果。
Therefore, it is very important to study the mechanism and the related parameters of notched directional splitting controlled blasting.
因此研究切槽定向断裂控制爆破的爆破机理及相关参数，具有十分重要的意义。
The directional folding blasting for demolishing a high brick water tower in the complicated surroundings is introduced.
介绍了复杂环境中砖砌高大水塔的定向折叠爆破拆除。
Introduced the directional broken blasting technology and application results in Xingtai coal mine.
介绍了定向断裂爆破施工工艺及其在邢台煤矿应用的效果。
Based on the theory of dynamic fracture mechanics, the mechanism of crack-forming among shot holes in the directional split of rock by controlled blasting is expounded.
基于断裂动力学理论，文章论述了切缝药包定向断裂控制爆破炮孔间贯通裂纹形成的机理。
Two big gate constructions were demolished by use of directional controlled blasting.
采用定向控制爆破方法拆除两座大门楼。
In order to demolish an old internally frame reinforced four story building complex in the city, at first, the directional blast was adopted and the blasting drills had been practised.
为了快速拆除杭州市内一幢内部框架加固的四层古式建筑楼房，原设计采用向南侧定向坍塌的爆破方案，并已钻眼确定爆破缺口。
By use of directional and folded blasting, a fifteen-storeyed and polygonal building with frame-shear wall was demolished.
十五层多边形框剪大楼采用定向折叠爆破方案拆除。
The directional collapse control-blasting of brick-concrete frame structure is introduced in the complicated environment.
介绍钢筋混凝土框架和砖混结构相结合的礼堂办公楼合一的准框架体在复杂环境下定向倒塌拆除爆破。
The research results can provide theoretical basis for directional fracture with controlled blasting of jointed rock mass.
研究结果可为节理岩体定向断裂控制爆破提供理论依据。
A gymnasium stadium with a "Z-shaped" framework structure was demolished using the dual directional folding controlled blasting technology.
采用双向折叠控制爆破技术拆除了一座“Z”型框架结构的体育场看台。
The technique of directional demolition blasting of a tall frame-structured reinforced concrete tower is introduced.
介绍了高耸框架结构的定向爆破拆除方法。
Triangle cut was adopted and directional window was excavated by cutting blasting and pneumatic pick repair.
方案设计采用三角形爆破缺口，掏槽爆破加风镐修整开凿定向窗。
The practical example of successful demolishing 20-storey building with shear wall structure by directional and bidirectional folding blasting was introduced.
介绍了采用定向爆破和双向折叠爆破技术成功拆除20层剪力墙结构楼房的工程实例。
But in the case of a tower building, since there is a supporting steel bar at the blasting cut, the height deducted from the common knowledge is hard to ensure directional collapse.
但对于钢筋混凝土等高耸建筑物，由于爆破切口处有钢筋支撑，如果还按此经验取值，则难以保证其定向倒塌。
The directional and a certain distance control blasting removal nearby was introduced, the pipeline of chemical property.
结合实例，介绍了在易燃易爆的化工物料管线附近的六层厂楼的定向、定距控爆拆除。
A simplified model for directional collapse of a construction is presented and a calculation formula on the minimum height of blasting cut is developed.
对建筑物的定向倾倒提出了简化模型，推导了最小炸高的计算公式。
A simplified model for directional collapse of a construction is presented and a calculation formula on the minimum height of blasting cut is developed.
对建筑物的定向倾倒提出了简化模型，推导了最小炸高的计算公式。
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