潘家口水利枢纽主坝底孔爆破开挖弧门检修槽

STUDY ON BLASTING AND EXCAVATING TECHNOLOGY FOR PANJIAKOU WATER CONTROL PROJECT──EXCAVATING GROOVES FOR RADIAL GATES IN THE BOTTOM OUTLETS OF THE MAIN DAM

本文介绍在混凝土坝底孔弧形门两侧爆破开挖检修槽的经验，采用密孔小药量光面切割控制爆破技术及相应的措施，取得了较好的效果。

The experience for blasting and excavating service grooves on the both sides of radial gate at the bottom outlet of concrete dam is introduced in this paper.The smooth-cutting controlled blasting technology with close blastholes charged with small volume of explosive,including appropriate measures is used in the above mentioned project.Better results have been obtained.