Spring Controlled Blasting in Debris Soil
Zhang Shao-guang · West-china Exploration Engineering · 2004
In the case of being difficult of drilling with common pneumatic drill, about 100 m3 of debris soil is blasted out successfully by using sprung method through man-made setting up bulled holes. A relative systemic blasting design is provided, which includes spring and hole reaming technique, blast-hole springing parameters design, determination of explosive-loading weight and safety measures.