露天深孔台阶爆破设计参数的确定与协调探讨

发布时间：2018-07-12 11:13

本文选题：台阶爆破 + 设计参数　；参考：《爆破》2017年02期

【摘要】：针对当前露天深孔台阶爆破设计中存在的不考虑爆破设计参数之间的协调关系、不遵从钻孔爆破的基本公式Q=qV=qabH,从而导致参数之间相互矛盾的问题,基于对深孔台阶爆破设计参数相互关系的分析,提出了考虑参数协调下的深孔台阶爆破设计方法和步骤。计算得出炮孔孔距a、排距b,而不根据工程经验选定,其后依据爆破基本公式Q=qabH计算单孔药量Q。算例表明:提出的深孔台阶爆破设计方法与步骤,能有效避免盲目根据工程经验选定孔网参数带来的混乱,明确了该类型爆破设计的合理方法。同时,对工程中台阶爆破常用的计算前排炮孔底盘抵抗线的巴隆公式,指出了其不合理之处,明确了其应用范围。
[Abstract]:In view of the existing problems in the design of open-pit deep-hole bench blasting which do not consider the coordination relationship between blasting design parameters and do not conform to the basic formula of borehole blasting, Q Q V and Q B H, which lead to the contradiction between the parameters. Based on the analysis of the relationship between the design parameters of the deep-hole bench blasting, the design method and steps of the deep-hole bench blasting are put forward considering the coordination of the parameters. The hole spacing (a) and the row distance (b) are calculated, but not selected according to the engineering experience. After that, the quantity of single hole charge is calculated according to the basic formula of blasting QQ QABH. The numerical examples show that the method and steps of the design of the deep-hole bench blasting can effectively avoid the confusion caused by blindly selecting the parameters of the hole network according to the engineering experience, and the reasonable method for the design of this type of blasting is clarified. At the same time, the Balon formula for calculating the resistance line of the front row hole chassis used in step blasting is pointed out, and its application scope is clarified.
【作者单位】：西安理工大学岩土工程研究所;陕西四方平安爆破工程有限公司;
【基金】：陕西省教育厅基金(15JK1540)裂隙岩体高温热损伤及工程应用研究
【分类号】：TB41

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