桃林口水库右岸基岩保护层一次爆除技术ONE-TIME BLASTING TECHNOLOGY OF PROTECTING LAYER OF BASEMENT ON RIGHT BANK OF TAOLINKOU RESERVOIR
刘治峰
Liu Zhifeng (Hebei Bureau of Water Conservancy Engineering;
摘要(Abstract)：
水电工程基岩保护层开挖，按技术规范需进行分层开挖，并根据岩石情况留有一定的撬挖层。这种开挖方式很难适应大、中型水电工程任务重、工期紧的需要，影响工程进度。随着爆破器材和爆破技术的发展，保护层开挖方法有所改进和突破。在桃林口水库右岸基岩保护层开挖施工中，一次性爆除新技术获得成功，加快了施工进度，保证了工程质量。
According to technical criteria,stratifying demolishing should be taken for blasting of protecting layer of basement in electric and water projects A certain of prying layer should be reserved based on rock condition This demolishing method can not suit the needs of heavy task and short speriod for large and medium size electric and water projects and slows the project schedule Along with the development of blasting equipment and technology,new primary blasting technology was successfully used in construction of protecting layer blasting of basement on right bank of Taolinkou Reservoir The construction schedule was speeded up So the project quality is guaranteed
关键词(KeyWords)：
基岩保护层,爆破开挖,孔间微差
Protecting layer of basement Blasting demolishing Millisecond delay blasting
基金项目(Foundation):
作者(Authors):
刘治峰
Liu Zhifeng (Hebei Bureau of Water Conservancy Engineering;