Construction method for sealing limestone cave groove wall in underground continuous wall construction

• Main Authors: WANG YINJIE, ZHANG RUNDE, XIE BAORU, LIANG HELONG, TANG WUXING, XIAO MINQUAN, XIE ZHIJIE, HUANG MAOXING, LUO HAITENG, CAI KAIXIANG
• Format: Patent
• Language: Chinese; English
• Published: 03.10.2017
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; SOIL SHIFTING; TREATMENT OF NATURAL STONE; UNDERGROUND OR UNDERWATER STRUCTURES

The invention provides a construction method for sealing a limestone cave groove wall in underground continuous wall construction. The construction method comprises steps: (1) investigating cave conditions; (2) punching grouting holes: punching single-liquid grouting holes at both sides of the continuous wall position alternately; punching double-liquid grouting holes at the outer sides of the single-liquid grouting holes alternately; (3) injecting double-liquid grout into the cave through the double-liquid grouting holes: the double-liquid grout is the mixed grout of cement, water and soluble silicate, and a continuous curtain wall area is formed by enclosure in the cave; (4) injecting single-liquid grout into the cave through the double-liquid and single-liquid grouting holes, the single-liquid grout is cement grout, and a continuous wall diggable area is formed in the continuous wall area; and (5) detecting the grouting effect. According to the construction method provided by the invention, for deep caves,