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Combining the specific engineering practice,this paper discussed the theoretic and practical bases of reasonable lying of the cuttings hole toward characteristics of the big cross-section sap tunneling demolition,and calculated the reference quantity of explosive in single hole under condition of the mild-rigidity rocks.

文章结合具体工程实践 ,针对大断面坑道掘进爆破的特点 ,依据具体的工程要求 ,对深孔掏槽的布设参数作了探讨 ,提出了掏槽孔合理布设的理论和实践依据 ,并计算出了在中等硬度岩石中的参考单孔药量 ,对坑道掘进施工中的类似情况有一定的参考作用。

By using the LS-DYNA 3D nonlinear dynamic finite element software,the elasticity calculation model was established to analyze the generation and transmission of stress under explosive charge in 4 typical cutting patterns,those used in shaft excavation by one-step blasting were optimized and compared by numerical simulation to select the optimizing cutting patterns.

对坚硬岩石条件下深孔一次爆破成井的九孔、双孔菱形、单螺旋和双螺旋4种掏槽方式,在炸药爆炸荷载作用下的应力产生和传播机理进行了计算机数值模拟。

In this paper, the author combined the experience of tunnelling construction bystraight-in hole cutting blasting within 30 years in the country with the theory and practice in the blasting wor of Sweden, U.

该文系作者30年来在国内外隧道掘进施工中应用直眼掏槽爆破积累的经验，并在不断提高和改进过程中，大量汲取了瑞典、美国和加拿大等国家的理论与经验写成，对中等硬度及坚硬岩层隧道爆破掘进具有一定的理论和实用意义。

The movement law of the smashed rock mass in the cut blasting was studied using two phase flow method drawn on the experience of industry.

借鉴工业生产中的两相流动方法研究掏槽爆破中的颗粒运动规律。

Physical models of fragment discharge process are established and the fragment discharge law is discussed by the rational simplification of parallel-cut blasting process in this paper.

通过对直眼掏槽爆破过程的合理简化,建立了排碴过程的物理模型,研究了排碴规律,并通过实例对其合理性进行了验证。

The undermine method of well drilling technology once of blasting is put forward as well as the calculation of blasting parameters and the demand of implementation for hole.

介绍了爆破一次成井技术在漂塘钨矿的应用实践,提出了爆破一次成井的掏槽方式,爆破参数的设计计算方法和炮孔的施工要求。