The water-coupling blasting (WCB) technology has received widespread attention due to its advantages of high efficiency and environmental protection. However, the parameters of WCB in practical engineering are generally determined based on the experience and standards of air-coupling blasting (ACB), leading to poor blasting effects and wastage of explosive energy. The study focuses on comparing the rock-breaking effects of shock waves and explosive gases between WCB and ACB to offer insights for optimizing the design of WCB. Firstly, the stress field in blasting with different coupling mediums was calculated. Then, the shock failure characteristics of rocks between WCB and ACB were analyzed. The results show that the radius of shock failure zones decreases with the increasing decoupling coefficient in WCB and ACB. On this basis, a model for calculating the shock failure range in WCB and ACB was proposed. This model can be utilized to estimate the percentage of fine-grained stone in the two types of blasting. Further, a method for distinguishing between the rock-breaking effects of shock waves and explosive gases was proposed based on the numerical simulation results of blasting damage. A comparative analysis between WCB and ACB on the rock-breaking volume by shock waves and gases was conducted. The results indicate that the failure volumes of rocks induced by shock waves and gases in WCB are 1.4–2.1 times greater than those in ACB, with a decoupling coefficient ranging from 1.26 to 1.71. Finally, a method for determining the charging structure in WCB was discussed, which has been preliminarily validated by field tests. The findings can help regulate rock-breaking effects in blasting by rationally selecting coupling mediums and charging constructions.

中文翻译：

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水耦合爆破与气耦合爆破破岩特性的差异


水耦合爆破 （WCB） 技术因其高效、环保等优点而受到广泛关注。然而，在实际工程中，WCB的参数通常是根据空气耦合爆破（ACB）的经验和标准确定的，导致爆破效果差，浪费了爆炸能量。该研究的重点是比较 WCB 和 ACB 之间冲击波和爆炸性气体的破岩效应，为优化 WCB 的设计提供见解。首先，计算了不同耦合介质爆破时的应力场;然后，分析了 WCB 和 ACB 之间岩石的冲击破坏特征。结果表明，WCB 和 ACB 中冲击破坏区的半径随着去耦系数的增加而减小。在此基础上，提出了一种计算 WCB 和 ACB 中冲击破坏范围的模型。该模型可用于估计两种爆破中细晶石的百分比。此外，基于爆破损伤的数值模拟结果，提出了一种区分冲击波和爆炸性气体的破岩效应的方法。对 WCB 和 ACB 对冲击波和气体破岩体积进行了比较分析。结果表明，WCB 中激波和气体引起的岩石破坏量是 ACB 的 1.4–2.1 倍，解耦系数在 1.26 到 1.71 之间。最后，讨论了一种确定 WCB 中充电结构的方法，该方法已通过现场测试进行了初步验证。研究结果有助于通过合理选择耦合介质和装药结构来调节爆破中的破岩效应。