Numerical Analysis on Two-Layer Bundle-Hole Cut Blasting with Continuous-Discontinuous Elements

被引：4

作者：

Feng, Panxue ^{[1
,2
]}

Li, Yunpeng ^{[3
]}

Wang, Xueya ^{[3
]}

Feng, Chun ^{[4
]}

Zhang, Yiming ^{[3
]}

机构：

[1] Beijing Gen Res Inst Min & Met, Sub Inst Min Engn, South 4th Ring West Rd 188, Beijing 100160, Peoples R China

[2] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Xueyuan Rd 30, Beijing 100083, Peoples R China

[3] Hebei Univ Technol, Sch Civil & Transportat Engn, Xiping Rd 5340, Tianjin 300401, Peoples R China

[4] Chinese Acad Sci, Inst Mech, North 4th Ring West Rd 15, Beijing 100190, Peoples R China

来源：

GEOTECHNICAL AND GEOLOGICAL ENGINEERING | 2022年 / 40卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Cut blasting; Bundle-hole; Continuous-discontinuous element; Numerical simulation; MESHFREE METHOD; MODEL; ROCK; DAMAGE;

D O I：

10.1007/s10706-022-02198-3

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Comparing to traditional cut blasting, multilayer bundle-hole cut blasting shows improved performance because of the much bigger size of the induced stress wave. When blasting happens in quasi-brittle geotechnical materials such as rocks, theoretical analysis is not enough for predicting the damaged area and evaluating specific blasting design. Numerical tools capable of capturing the fracturing processes of rock subjected to dynamics loadings are necessary. In this work, continuous-discontinuous elements method is adopted for evaluating the blasting effects of two-layer bundle-hole cut blasting designs. Straight and inclined holes are considered. After comparing the size of damaged areas and blasted rock pieces, best design is determined.

引用

页码：5045 / 5054

页数：10

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