Concrete cover-weight consolidation grouting method for non-cover-weight combination of different holes through guide pipes

• Main Authors: ZHU QING, HE MINGJIE, JI LINQIANG, WANG XIANBIAO, ZHANG WEIDI
• Format: Patent
• Language: English
• Published: 23.09.2015
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention relates to a concrete cover-weight consolidation grouting method for non-cover-weight combination of different holes through guide pipes. The invention aims at providing the concrete cover-weight consolidation grouting method for non-cover-weight combination of the different holes through the guide pipes, avoiding a condition that grout blocks hole walls after secondary hole cleaning by a conventional consolidation grouting method, and enhancing the reinforcement grouting pressure of a foundation surface-layer rock mass, so that the surface-layer foundation consolidation grouting quality can be substantially improved. The technical scheme provided by the invention is that a dam is provided with a dam foundation and a dam foundation surface basically flush with the surface of the dam foundation, the dam foundation sequentially comprises a surface-layer rock mass segment and a lapping segment from the dam foundation surface to the bottom, the upper portion of the dam foundation surface has a concrete structure to be poured, and the concrete cover-weight consolidation grouting method for non-cover-weight combination of the different holes through the guide pipes comprises two stages to process the dam foundation.