Method and structure for building asphalt core wall dam base without foundation pit

• Main Authors: LIU YUANXUN, MA LIJUN, DING JIANBO, BIN BIN, PENG CHUNLEI, BI SHUGEN, WANG HAIJIAN, CHEN SONGBIN
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2022
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention discloses a method and a structure for building an asphalt core wall dam base without a foundation pit, and the method comprises the following steps: building the asphalt core wall dam base after reinforcing a throwing filler and a covering layer, and meanwhile, forming a complete anti-seepage system by adopting a front blanket, a pulsation grouting anti-seepage wall and curtain grouting. According to the method, a covering layer does not need to be excavated, the covering layer serves as an asphalt core wall base after being subjected to compaction grouting reinforcement, meanwhile, front blanket is adopted, and the leakage problem caused by the fact that an existing anti-seepage wall is directly built on the lower portion of an asphalt core wall and the lower portion of a base and is prone to deformation and damage is solved. By the adoption of the method and structure, the construction procedure can be optimized, the height of the asphalt core wall is reduced, the engineering amount is reduce