竖井施工,随着井筒的下掘,压风管、风筒、溜灰管都要跟着下延。当采用一掘一喷施工方法时,喷射混凝土管每一个循环都要下放、提升一次。为了保持喷射混凝土管在井口井下按顺坡输送,防止堵管,为了解决压风管、风筒接管时在最后对口连接时的准确、快捷,我们在凡口新副井施工中分别在直径89×4.5毫米的溜灰 Shaft construction, with the wellbore digging, compressed air duct, duct, slippery ash pipe to follow the next extension. When using a dig one spray construction method, the shotcrete pipe every cycle must be decentralized, enhanced once. In order to maintain the shotcrete pipe downhole along the wellhead delivery, to prevent plugging, in order to solve the compressed air duct, duct take over when the final counterpart connection is accurate and fast, we are in the new port construction in the mouth of a diameter of 89 × 4.5 mm slip ash