含能材料2025，Vol.33Issue(7)：714-724,11.DOI:10.11943/CJEM2025040
孔内分层装药爆破破岩成腔机理及应用
Mechanisms of Rock Breaking and Cavity Formation of Hole-inner Layered Charge Blasting
摘要
Abstract
To study the mechanisms of rock breaking and cavity formation by hole-inner layered charge blasting,the influence of hole-inner layered charges on the rock breaking and cavity formation of deep hole cutting was first investigated through theoreti-cal analysis and model experiments.Then,numerical simulations were carried out using SPH-FEM algorithm to reveal the pro-cesses of rock breaking and throwing as well as the mechanisms of rock breaking and cavity formation.Finally,field tests were conducted to explore its application effects.The results show that the hole-inner layered charge could realize the uniform distri-bution and release of explosive energy,which could eliminate the large rock in the upper cavity and weaken the constraint effect of the surrounding rock in the bottom cavity,so as to achieve the cavity formation efficiency of 96.5%.The numerical simulation realized the visualization of the blasting process.The simulation results confirmed the beneficial effect of uniform energy distribu-tion and sequential release on rock breaking and cavity formation.Compared with traditional cutting blasting technique,using the hole-inner layered charge cutting technique,cycle footage and hole utilization were increased by 0.45 m and 17.3%,respec-tively,the specific charge and detonator were reduced by 0.42 kg·m-3 and 0.21 PCS·m-3,respectively.The results demonstrated the applicability of hole-inner layered charge cutting technique in deep hole blasting.关键词
深孔爆破/孔内分层装药/破岩成腔/数值模拟/现场试验Key words
deep hole blasting/hole-inner layered charge/rock breaking and cavity formation/numerical simulation/field test分类
军事科技引用本文复制引用
程兵,叶福,汪泉,徐颖,程扬帆,李洪伟,王梦想..孔内分层装药爆破破岩成腔机理及应用[J].含能材料,2025,33(7):714-724,11.基金项目
安徽省自然科学基金(2408085QA029) （2408085QA029）
深部煤矿采动响应与灾害防控国家重点实验室开放基金(SKLMRDPC23KF05) （SKLMRDPC23KF05）
矿山地下工程教育部工程研究中心开放基金(JYBGCZX2023105) Anhui Provincial Natural Science Foundation(2408085QA029) （JYBGCZX2023105）
Open Research Grant of State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines(SKLMRDPC23KF05) （SKLMRDPC23KF05）
Open Research Grant of En-gineering Research Center of Underground Mine Construction of Ministry of Education(JYBGCCZX2023105) （JYBGCCZX2023105）
