西河倒虹吸临近建筑物微震爆破开挖研究  

Research on Microseismic Blasting Excavation of Buildings Adjacent to Xihe Inverted Siphon

作　　者：赵华芹 邹辉 ZHAO Hua-qin;ZOU Hui(POWERCHINA SINOHYDRO ENGINEERING BUREAU 14 CO.,LTD.,Kunming 650041,China)

机构地区：[1]中国水利水电第十四工程局有限公司,云南昆明650041

出　　处：《云南水力发电》2022年第4期191-196,共6页Yunnan Water Power

摘　　要：涔天河项目西河倒虹吸跨河段位于何家村附近的西河段,全长约120m。通过对西河倒虹吸周围施工条件和临近建筑物概况分析,对跨河段采用微震爆破开挖施工工艺进行了详细探讨。在微震爆破施工中严格执行单个炮孔采用间隔装药的结构型式,分段爆破,小药量爆破的原则,分散炸药能量,以保证西河倒虹吸管跨河段基础开挖爆破控制顺利实施。Xihe inverted siphon of Centian River Project is located in the west reach near Hojiacun with a total length of 120m.Based on the analysis of construction conditions around Xihe inverted siphon and general situation of adjacent buildings,this paper discusses in detail the construction technology of microseismic blasting excavation across the river section.In the construction of microseismic blasting,the principle of using interval charge for single bore,sectional blasting and small charge blasting are strictly implemented,and the explosive energy is dispersed to ensure the smooth implementation of blasting control for excavation of Xihe inverted siphon across the river foundation.

关 键 词：临近建筑物 微震爆破 爆破设计 封孔 联网 保护 

分 类 号：TB41[一般工业技术] TV542[水利工程—水利水电工程]