人工挖孔桩工程孔内基岩爆破设计和施工简介

摘要

Artificially excavating hole is a commonly used method for construction of pile foundation, esp. pile embedded in rocks. Since piles shall be embedded into rocks, and it is very difficult to excavate artificially slightly weathered rock stratum, explosion shall be carried out to base rock. Based on the design of explosion scheme for artificial excavation pile engineering of A02 contract section in an express highway project in Guangdong, general ideas and methods of in-hole base rock explosion design for excavation-hole pile are provided.%人工挖孔是桩基尤其是嵌岩桩施工中经常采用的方法，但微风化岩层人工开挖难度较大，施工中须对基岩进行爆破。通过对广东某高速公路A02合同段人工挖孔桩工程爆破方案的设计，提供了挖孔桩孔内基岩爆破的一般设计思路及方法。