Construction method for precise drilling and grouting on large-water-depth toe board

The invention discloses a construction method for precise drilling and grouting on a large-water-depth toe board. The construction method comprises the following steps: (S1) carrying out preliminary work for construction; (S2) building a floating bridge (2) on the water surface of a dam; (S3) determ...

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Bibliographic Details
Main Author ZHONG JIU'AN
Format Patent
LanguageChinese
English
Published 22.03.2017
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:The invention discloses a construction method for precise drilling and grouting on a large-water-depth toe board. The construction method comprises the following steps: (S1) carrying out preliminary work for construction; (S2) building a floating bridge (2) on the water surface of a dam; (S3) determining a drilling position on the toe board (1); (S4) carrying out curtain grouting and drilling on the toe board (1), wherein before operation, a diver assists a water-surface platform drilling machine operator to make a drill bit hitch an underwater steel bar and then starts the drilling machine to slowly drill the toe board so as to guarantee that the operation point of the drilling machine is on the drilling position; (S6) manufacturing an orifice pipe (7); (S8) carrying out construction of curtain grouting; (S9) repeatedly carrying out the step (S9) until the total depth of a grout hole reaches the curtain grouting depth required in the design in order to finish single-hole curtain grouting construction; and (S
Bibliography:Application Number: CN201610962397