CAP1400核岛负挖保护层爆破施工技术探讨

Discussion on Blasting Construction Technology of Protection Layer Excavation in CAP1400 Nuclear Island

为了有效控制爆破对核岛基础岩体的不利影响,同时加快施工进度和减小施工难度,选取合适的核岛负挖保护层爆破开挖施工技术,对保护层进行小范围预爆破试验,确定合理、可靠的爆破参数,并用于后续爆破施工中。通过对CAP1400示范工程1#核岛负挖保护层的爆破施工,提高了爆破效果并保证了工程施工质量。

Adverse effects for effective controlled blasting of the nuclear island foundation rock, at the same time to speed up the construction progress and reduce the construction difficulty, the appropriate nuclear island negative excavation protection layer excavation construction technology has been selected pre-blasting test is processed to the protective level to a limited extent ,and reasonable, reliable blasting parameters are confirmed and used to the subsequent blasting construction. At the same time through the CAP1400 demonstration project 1 nuclear island negative excavation construction blasting , so as to improve the blasting effect and to ensure the construction quality.