邻海35kV地下变电室深基坑通过采用偏心潜孔锤跟管钻进成孔＋PVC管护壁施工及局部双排桩施工工艺，以及上部桩锚＋下部内支撑系统，克服了一系列难题，确保了深基坑施工质量和安全．工程实践表明，该技术安全、可靠、有效、经济，对于其他复杂地质条件基坑围护有一定的参考借鉴作用．%It proves that a series of difficulties will be overcome in using the eccentric DTH hammer drilling with casing hole ＋ PVC tube wall construction and local double-row pile construction technology, as well as the upper and lower inner pile anchor support system of the underground substation chamber in deep foundation pit in the adjacent sea 35kV to en- sure the quality and safety of the project construction. The engineering practice shows that the technology is reliable, safe, effective, economic to similar foundation pit under compli- cated geological conditions for reference.
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