Study on rock excavation with laser

被引：6

作者：

Nagai, K ^{[1
]}

Sato, M

Hattori, H

Sivakumaran, W

Kinugasa, M

机构：

[1] TAISEI Corp, Yokohama, Kanagawa 2450051, Japan

[2] Geosci Res Lab, Yamato, Kanagawa 2420024, Japan

[3] TAISEI Corp, Shinju Ku, Tokyo 1630606, Japan

[4] JAPAN Nucl Cycle Dev Inst, Fukui 9190139, Japan

来源：

HIGH-POWER LASERS IN CIVIL ENGINEERING AND ARCHITECTURE | 2000年 / 3887卷

关键词：

rock excavation; dross; crack; laser condition; drill;

D O I：

10.1117/12.375204

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In order to excavate rock bed without reaction, the CO2 laser was utilized. Feasibility of using laser energy to excavate rock was evaluated. Two kinds of rock were subjected to CO2 laser beam in preliminary experiment. The cross section of rock samples subjected to CO2 laser was observed carefully along the depth from the irradiated surface. 1) Sandstone was mostly melted and partly vaporized. 2) Granite has many cracks around kerf filled with molten rock. 3)The molten part formed the dress. The formation of dress reduced the excavation effectively. Further study was conducted to reduce the effectually of the dress. Laser power, processing rate and beam width on rock surface were taken as parameters to find the condition without forming the dress. Also new method was developed to remove the dress effectively.

引用

页码：57 / 66

页数：10