钻孔灌注桩球状风化体爆破施工

Blasting Construction of Spherical Weathered Body for Bored Pile

陆丰核电厂区位于广东省汕尾市碣石镇,厂址所在区域为海陆交界区域,地质情况复杂,地层中存在球状风化体。基坑围护结构施工过程中由于球状风化体的存在造成钻孔桩成孔困难,常常偏孔,严重制约着工程进展。通过预爆破手段使孤石及倾斜岩层产生裂隙,从而提高钻孔效率,加快工程进展。

Lufeng Nuclear Power Plant is located in Jieshi Town,Shanwei City,Guangdong Province.The plant site is situated in a border area between sea and land,with complex geological conditions and the presence of spherical weathered bodies in the geological strata.During the construction process of the foundation pit enclosure structure,the presence of spherical weathered bodies makes it difficult to form drilled piles,often resulting in deviated holes,which seriously restricts the progress of the project.By using pre blasting methods to create cracks in isolated rocks and inclined rock layers,drilling efficiency can be improved and engineering progress can be accelerated.