The quality management of ultra-deep underground diaphragm wall is difficult,Shenzhen Qianhai-Nanshan drainage deep tunnel system project adopts ultra-deep underground diaphragm wall construction,fully considers the matching of construction environment and construction technology,and selects rotary drilling rig+double-wheel milling suitable for rock formation groove slotting,and at the same time from mud control,construction measures,verticality control,A set of key technologies suitable for the construction of ultra-deep diaphragm walls in complex strata and areas with abundant groundwater have been summarized and formed,and the research results can provide technical reference for the construction of ultra-deep diaphragm walls.
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