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A new theory of rock-explosive matching based on the reasonable control of crushed zone

ISSN号：1671-3664
期刊名称：《地震工程与工程振动：英文版》
时间：0
分类：TD235.33[矿业工程—矿井建设] TB552[理学—物理;理学—声学;一般工业技术]
作者机构：[1]State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University Wuhan 430072, China, [2]Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering of Ministry of Education, Wuhan University, Wuhan 430072, China
相关基金：Foundation items： National Science Fund for Distinguished Young Scholars, China （No. 51125037）; Natio- nal Basic Research Program of China （No. 2011CB013501）; National Natural Science Foundation of China （No. 51279135）

作者： Leng Zhendong[1,2] Lu Wenbo[1,2] Chen Ming[1,2] Yan Peng[1,2] Hu Yingguo[1,2]

关键词：阻抗匹配, 合理控制, 破碎带, 岩爆, 基础, 破碎效果, 爆破孔, 工具程序, drilling and blasting, crushed zone, rock-explosive matching, acoustic impedance matching

中文摘要：

Rational rock-explosive matching is of great importance to enhancing explosive energy effective utilization and improving rock fragmentation effect.The traditionally emphasized method of acoustic impedance matching is not rational.Based on blasting breakage mechanism,a new theory of rock-explosive matching in drilling and blasting is proposed.The new approach chooses explosive parameters by reasonable control of the size of crushed zone under the condition of fully fragmentation between adjacent blast holes.This method can directly reflect the blasting fragmentation effect and energy effective utilization,which is easy to implement.Also,a modified model is developed,taken adjacent blast hole blasting loading into account.As a result,explosive parameters of different grades of rock are given in full coupling on-site mixed explosive charge for different project objectives.

英文摘要：

Rational rock-explosive matching is of great importance to enhancing explosive energy effective utili- zation and improving rock fragmentation effect. The traditionally emphasized method of acoustic impedance matching is not rational. Based on blasting breakage mechanism, a new theory of rock-explosive matching in drilling and blasting is proposed. The new approach chooses explosive parameters by reasonable control of the size of crushed zone under the condition of fully fragmentation between adjacent blast holes. This method can directly reflect the blasting fragmentation effect and energy effective utilization, which is easy to implement. Al- so, a modified model is developed, taken adjacent blast hole blasting loading into account. As a result, explo- sive parameters of different grades of rock are given in full coupling on-site mixed explosive charge for different project objectives.

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