presplitting blasting

例句：

1. 1. The presplitting blasting method is used to prepare the ground for excavation.
   预裂爆破方法用于为开挖准备地面。
2. 2. The presplitting blasting technique was developed to improve the efficiency of construction work.
   预裂爆破技术被开发出来以提高施工效率。
3. 3. During the presplitting blasting process, the rock is broken into smaller pieces that can beeasily removed.
   在预裂爆破过程中，岩石被破碎成小块，可以容易地移除。