应急抢险中梁子湖堤的爆破拆除
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摘要
针对应急抢险中爆破拆除梁子湖与牛山湖之间大堤时间紧、规模大、环境复杂的情况,采用作业区内外2层警戒线、水上和陆上双重警戒方法,有效解决了周边环境复杂、警戒难度大的问题。制定采用防水爆破器材、采用波纹管穿管保护雷管及导爆索、孔内双重起爆体、孔外交叉复式网路、一线平推并行联网法和两序跟进检查网路的"六保险"措施,保证了1 000 m超长距离爆破网路的精准传爆、无一盲炮。在36 h的极短时间内,完成了现场勘察、爆破设计、火工品调配、1 000 m混凝土路面破拆,333个药室开挖、24 t炸药埋设,5 000 m导爆索及2 700枚导爆管雷管安装,最终按时顺利起爆,取得了很好的效果。
In view of the short time, large-scale and complex environment of blasting demolition of the embankment between Liangzi Lake and Niushan Lake in emergency rescue, methods of establishing two warning lines inside and outside, double warning both on water and land were adopted, which effectively solved the problems of complex surrounding environment and great difficulty of warning.To formulate "six insurance" measures for using waterproof blasting materials, bellows pass through to protect detonators and detonating cord, dual detonators in blastholes, cross-compound network outside blastholes, networking method of one-line parallel propulsion and two-step follow-up inspection network, make sure the extra-long distance of 1 000 m detonation network to work precisely,without any misfire. Surveying the scene, designing the blasting scheme,allocating the explosives,demolition of 1 000 m concrete road,excavation of 333 caves for explosives,burying of 24 t explosives, installing of 5 000 m detonating cord and 2 700 detonators, all the things above were done in a very short time of 36 hours, and finally detonated successful on time, and achieved very good results.
In view of the short time, large-scale and complex environment of blasting demolition of the embankment between Liangzi Lake and Niushan Lake in emergency rescue, methods of establishing two warning lines inside and outside, double warning both on water and land were adopted, which effectively solved the problems of complex surrounding environment and great difficulty of warning.To formulate "six insurance" measures for using waterproof blasting materials, bellows pass through to protect detonators and detonating cord, dual detonators in blastholes, cross-compound network outside blastholes, networking method of one-line parallel propulsion and two-step follow-up inspection network, make sure the extra-long distance of 1 000 m detonation network to work precisely,without any misfire. Surveying the scene, designing the blasting scheme,allocating the explosives,demolition of 1 000 m concrete road,excavation of 333 caves for explosives,burying of 24 t explosives, installing of 5 000 m detonating cord and 2 700 detonators, all the things above were done in a very short time of 36 hours, and finally detonated successful on time, and achieved very good results.
引文
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[3]国家安全生产监督管理总局.爆破安全规程:GB6722-2014[S].北京:中国标准出版社,2015.State Administration of Work Safety. Safety regulations for blasting:GB 6722-2014[S]. Beijing:China Standards Press,2015.
[4]汪旭光.爆破设计与施工[M].北京:冶金工业出版社,2012.WANG X G. Blasting design and construction[M].Beijing:Metallurgical Industry Press,2012.
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[6]张迎吉.降低硐室爆破有害效应的控制措施[J].中国矿山工程,2015,44(1):15-17.ZHANG Y J. Control measures of reducing the harmful effect of chamber blasting[J]. China Mine Engineering,2015,44(1):15-17.
[7]张忠伟,任舸,李洪涛.锦屏二级水电站导流隧洞进口围堰拆除爆破[J].爆破,2011,28(4):77-80.ZHANG Z W,REN K,LI H T. Explosive demolition of intake cofferdam of diversion tunnel on Jingping II hydropower station[J].Blasting,2011,28(4):77-80.
[8]陈敦科,苏利军.三峡三期上游碾压混凝土围堰拆除方案综述[J].爆破,2007,24(2):49-51.CHEN D K,SU L J. Demolition scheme of the 3rd stage upstream RCC cofferdam in the three gorges projece[J].Blasting,2007,24(2):49-51.