预裂爆破对爆孔上部岩体影响较大。
Presplit blasting mainly affects the upper part of rock mass.
本文提出一种新的预裂爆破方法——预应力爆破。
This paper presents a new kind of pre-splitting, prestressed blasting.
预裂爆破是一种广泛应用于爆破开挖轮廓处的方法。
Pre-splitting blasting is a wildly used method in the excavation of the outline.
并将预裂爆破在金堆城露天矿的应用情况作了介绍。
The application conditions in the open pit of JDC were simply recommended.
为确保边坡稳定，降低工程成本，采用了预裂爆破技术。
The pre splitting blasting, technical parameter, firing method and blasting effect of the project are introduced.
对一次预裂爆破传爆中断的可能因素及特征进行了分析。
Analysis on the possible factors and the characteristics causing the interruption of propagation of detonation during a pre-splitting blasting is given in this paper.
层状复合岩体中岩层性质的差异常常导致预裂爆破效果不理想。
The rock property difference of bedded composite rock often does not lead to ideal Pre-splitting blasting effect.
在预裂爆破试验中，采用双因素试验方法，减少了试验的工作量。
During blasting test of rock split in advance using Double Factors test method, the work is reduced and predigested.
最后，对使用宽孔距的预裂爆破所产生的经济、社会效应进行了评价。
Finally, the economy, the social effect were used to appraise the pre-splitting blasting with wide pitch of holes.
并简要的介绍了预裂爆破预裂面减震效果的测试及震速曲线的谱分析。
The measurement of vibration-reduction effects of pre-splitblasting and spectrum analysis of vibration speed curves are expounded.
爆破参数的选择直接影响着爆破效果，是光面、预裂爆破工程设计的重要内容。
The selection of parameters in smooth and presplitting blasting plays an important role in blast effect. It is an important part in project design of smooth and presplitting blasting.
在石人沟铁矿的试验结果表明采用垂直深孔预裂爆破技术在该矿是一种可行方案。
The test results show that the technology of vertical deep hole presplitting blast is a feasible method in Shi Rengou Iron Mine.
在厂房内复杂环境下，用预裂爆破对两个大型钢筋混凝土厂房立柱进行部分切割。
Under complex condition in a factory building, two large-scale reinforced concrete columns of the factory building were partially cut by the presplitting blasting.
聚能预裂爆破与普通预裂爆破相比，爆破效果明显提高，能有效地控制预裂缝的扩展。
Compared with the conventional presplitting methods, the shaped charge is obviously more effective in presplitting blasting and especially useful in controlling the presplitting slots.
煤层深孔预裂爆破近年来在瓦斯抽放中运用日益增多，但目前对其爆破理论研究较少。
The technique of deep-hole presplitting blasting in coal bed is widely used for gas predrainage recently; but its blasting theory is not clear up to now.
BHPO预裂爆破方法是建立在现代力学的基础之上，可以更好的达到保护边坡的目的。
It's the new improved technology of pre-split blast at present. The BHPO method is based on modern mechanics which could do better on slope protection.
主要介绍露天深孔大梯段预裂爆破、减震爆破、微差爆破、最大一次装药量的控制措施和关系。
The relationship between the pre-splitting, vibration reduction, millisecond blasting and the maximum single detonating charge in open deep-hole large stage is introduced.
引入灰色系统理论的关联分析方法，对某矿山预裂爆破的震动效应进行了多因素灰色关联分析。
Based on association analysis with gray system theory, the multi-factor gray association analysis has been carried out for analysing the vibration effect of pre-splitting blasting in a mine.
结果为：原岩应力的存在有利于光面爆破的炮孔间贯通裂纹的形成，不利于预裂爆破的炮孔间贯通裂纹的形成。
Results indicate that the residual stress is useful to form the cracks between the shot-holes for smooth blasting, but not for pre-split blasting.
本文提出了光面爆破和预裂爆破的断裂力学模型，分析了应力波、爆生气体准静态压力在爆破破裂过程中的作用。
This paper presents a fracture mechanics model of smooth blasting and pre-split blasting, analyzes the function of stress waves and quasi-static pressure of explosion in blasting process.
通过大量的预裂爆破试验，得出了适用于该边坡的炮孔直径、炮孔间距、线装药密度、不耦合系数等一系列常规预裂爆破参数。
Pre-splitting blasting experiments were carried out to obtain normal pre-splitting blasting parameters such as hole diameter, hole space, gun- powder charge line density, and uncoupling factor.
利用断裂力学原理阐明了切槽爆破机理，提出了切槽预裂爆破的刀具参数，依据现场初步试验成果指出了下一步应改进的切槽刀具参数。
The notch blasting mechanism is expounded by the fracture mechanics principle, the cutting tool parameters for notch presplitting blasting is put forward.
本文对白云鄂博铁矿主采场不同岩性中的预裂爆破进行了探讨，通过计算给出了一些基本的爆破参数，并详细介绍了预裂爆破施工组织过程。
Some basic blasting parameters are given by calculating and the process is introduced on the discussion of pre-crack explosion of different rock character.
光面爆破和预裂爆破技术已广泛地在路堑石方中应用，研究钻孔技术，尽量减少钻孔误差，是保证光面和预裂爆破的关键，在峒室加预裂一次爆破成型中尤为重要。
To study the drilling technique for decreasing the errors of ihe drilled hols as possible is to be ensured of the quality to use them.
断裂控制爆破是一种新的周界控制爆破方法，用它取代预裂和光面爆破，可以获得更好的周界控制效果。
Fracture control blasting, a new perimeter control technique, is an alternative to pre-splitting or smooth wall blasting which can be used to achieve better perimeter control results.
预裂控制爆破技术在该矿山得到实施运用，经济效益显著。
This technique has found enforcement and application in this mine, resulting in obvious economic benefits.
为提高炮采面块煤率 ，提出了松动预裂微差爆破的落煤方案 ，并对布孔参数和爆破参数进行了调整。
To increase lump coal ratio in stopes, a scheme is put forward for coal falling by loose pre-shearing millisecond blasting, and hole arrangement parameters and blasting parameters are adjusted.
为提高炮采面块煤率 ，提出了松动预裂微差爆破的落煤方案 ，并对布孔参数和爆破参数进行了调整。
To increase lump coal ratio in stopes, a scheme is put forward for coal falling by loose pre-shearing millisecond blasting, and hole arrangement parameters and blasting parameters are adjusted.
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