预留岩墙的深孔控制爆破开挖技术

靠近建(构)筑物处进行石方爆破,通常采用预留岩墙的施工方法。根据安托山整治工程的成功实践,介绍了采用深孔控制爆破开挖岩墙的技术,提出岩墙厚度、布孔原则、装药要求、防护体系等相关措施。为在靠近建(构)筑物处实施岩墙爆破时,保证开挖安全、加快开挖进度、降低开挖成本提供了有益的经验。

DEEP-HOLE CONTROLLED BLASTING EXCAVATING TECHNIQUE OF THE PRESERVED DIKE

Preserved dike construction method is usually adopted in rock blasting near structures.In view of Antuoshan project,deep-hole controlled blasting excavating technique of the preserved dike was introduced.Some parameters were put forward such as the thickness of preserved dike,principle of hole arrangement,charging requirement,protection system and so on.When the preserved dike was excavated by the technique,it could ensure excavation safety,speed up excavation progress,and reduce excavation cost.