Mechanical Mechanism of Hydraulic Fracturing Effect Caused by Water Inrush in Tunnel Excavation by Blasting

Zhang Quan; Wang Jiong; Feng Longfei

首页> 外文期刊>Mathematical Problems in Engineering: Theory, Methods and Applications >Mechanical Mechanism of Hydraulic Fracturing Effect Caused by Water Inrush in Tunnel Excavation by Blasting

【24h】

Mechanical Mechanism of Hydraulic Fracturing Effect Caused by Water Inrush in Tunnel Excavation by Blasting

机译：Mechanical Mechanism of Hydraulic Fracturing Effect Caused by Water Inrush in Tunnel Excavation by Blasting

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

When the deep tunnel is excavated, the pressure of the confined water is relatively high, causing the water inrush to have a hydraulic fracturing effect. The method of theoretical analysis was adopted to study this effect. A mechanical model for fracturing water inrush under blasting excavation conditions was established. The water inrush under this condition is the result of the combined action of static load (water pressure and in situ stress) and dynamic load (explosive stress wave). According to whether the normal stress on the hydraulic crack surface was tensile stress or compressive stress, two types of water inrush were proposed: water inrush caused by tensile-shear damage and water inrush caused by compression-shear damage. These two types of critical water pressures were calculated separately. The relationship between critical water pressure, in situ stress, and blasting disturbance load was given, and a pore water pressure splitting factor was introduced in the calculation process. The theoretically obtained critical water pressure had been verified in the case of water inrush in a deep-buried tunnel. The established theory can guide field practice well.

著录项

来源
《Mathematical Problems in Engineering: Theory, Methods and Applications》 |2021年第27期|9919260.1-9919260.9|共9页
作者
Zhang Quan; Wang Jiong; Feng Longfei;
展开▼
作者单位

China Univ Min & Technol, Sch Mines, Xuzhou 221116, Jiangsu, Peoples R China;

China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China;

China Coal Technol & Engn Grp Corp, Ctr Mine Disaster Control & Environm Management T, Xian Res Inst, Xian 710054, Shanxi, Peoples R China;

展开▼
收录信息
原文格式 PDF
正文语种英语
中图分类
关键词

Mechanical Mechanism of Hydraulic Fracturing Effect Caused by Water Inrush in Tunnel Excavation by Blasting

摘要

著录项

相关主题

期刊订阅