Construction method of prefabricated diaphragm retaining wall based on TRD trenching

The invention relates to a construction method of a prefabricated diaphragm retaining wall based on TRD trenching. The construction method comprises the processes of construction of a guide wall, TRDtrenching construction, section steel position, splicing and hoisting of the prefabricated diaphragm retaining wall, wall gap grouting, etc. After the construction of the guide wall is completed, a TRD pile driver is adopted to horizontally cut a soil layer and cement grout is poured into the bottom of a cutter at the same time, and the cement grout and soil mass are mutually mixed to form a groove segment filled with cement soil. The construction method simplifies the construction process of the traditional diaphragm retaining wall, improves the construction quality and the construction efficiency, and saves the construction cost. 种基于TRD成槽的预制地连墙施工方法，它包括导墙施工、TRD成槽施工、型钢定位、预制地连墙拼接和吊装、墙幅间隙注浆等工序。在导墙施工完成后，采用TRD桩机水平切割土层并在刀具底部同时灌入水泥浆液，与土体相互搅拌混合形成充满"水泥土"的槽段。本发明简化了传统地连墙的施工工艺，提高了施工质量和施工效率，并节约了施工成本。