Application of the Ultrasonic Detection Technology in Smooth Blasting
As a controlled blasting technique which can maintain slope stability, the presplit blasting has been widely used in the railway, highway, water conservancy constructions and mining. The key to achieve good blasting results is to control,. the blast hole charge weight. Generally, the determination of the explosive charge is mainly in view of the compressive strength of rock in the presplit blasting. The influence of the rocks weak planes such as joint and crack are not taken into account in blasting. However, the integrity of rock is a significant factor in the presplit blasting. Based on the rock presplit blasting in the DK689+450DK689+640 section of the Beijing-Shanghai High Speed Railway, the ultrasonic wave velocities of rock were detected, and the compressive strength and the ultrasonic wave velocity were used to control linear charging density. The experiments indicate that the ultrasonic wave velocity of rock can be introduced to improve the quality of presplit blasting. It is the first time using the ultrasonic wave velocity of rock testing in the spot to guide blasting charge.
presplit blasting slope ultrasonic wave velocity linear charging density
Jianjun Shi Haili Meng Guangquan Zhang
Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Railway Engineering Research Institute China Academy of Railway Sciences Beijing, China School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing,
国际会议
三峡
英文
1395-1397
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）