Jacking Reinforcement and Steel Mill Vehicle Driveway Subsidence
JACKING REINFORCEMENT AND STEEL MILL VEHICLE DRIVEWAY SUBSIDENCE Shallow strata resin grout jacking technology 1. Project Background The driveway outside a steel mill was composed of coarse and medium sand with gravel and silty fine sand with organic matter. Due to the long-term pressure by heavy trucks, differential settlement and localized cracking of the rigid
Deep Foundation Excavation Water Inrush Low-Pressure Grout Sealing
DEEP FOUNDATION EXCAVATION WATER INRUSH LOW-PRESSURE GROUTING SEALING Dual-Pipe Grouting Method Inrush Water sealing technology 1. Project Background The foundation excavation depth of a civil building was GL-23.25m, and the top-down excavation method was being used for the works. When the building was being excavated close to the bottom of the foundation, four water inrushes
Tunnel Under Construction Serious Water Leakage Grout Blocking
TUNNEL UNDER CONSTRUCTION SERIOUS WATER LEAKAGE GROUT BLOCKING-SELF Expanding polyurethane resin water-stop grouting technology 1. Project Background The surrounding geological conditions of a vehicular mountain tunnel were broken quartz sandstone and slate. Although there were rock strata and colluvium-based alluvial layers with a thickness of about 60m in the upper part, due to broken rock
Cofferdam Waterstop Compound Grouting Technology
COFFERDAM WATERSTOP COMPOUND GROUTING TECHNOLOGY Grouting to prevent water leakage into bridge foundation retaining cofferdam under construction 1. Project Background A new bridge pier was designed with a long-span pile-raft foundation, and the foundation footing was set at a depth of about GL-21.0m below the water surface. In order to facilitate the excavation and construction,
TBM Bored In-Use Cable Tunnel Grout Repair & Extension of Life
TBM BORED IN-USE CABLE TUNNEL GROUT REPAIR &EXTENSION OF LIFE Water-stop reinforcement technology for TBM bored cable tunnel 1.Project Background A cable tunnel in use was constructed using the TBM method. After a period of use, water leakage of various amounts occurred in wells, corridors, linings, flexible joints, ring segments and inverts.The pre-designed guttering in
Preventive Grouting Reinforcement for Industrial Plant Foundations Hollowing
PREVENTIVE GROUTING REINFORCEMENT FOR INDUSTRIAL PLANT FOUNDATIONS HOLLOWING Instant-setting resin grout filling and compression ground improvemen 1. Project Background Preventive Grouting : Yellow-brown and reddish-brown silty clay mixed with sandy silt was the strata beneath the foundations of an industrial plant. After a period of use, it was suspected that foundation hollowing had occurred. After
High-Precision Automatic Elevation Monitoring System Introduction
HIGH-PRECISION AUTOMATIC ELEVATION MONITORING SYSTEM INTRODUCTION The best matching equipment for grout jacking technology 1. Project Background While railways, airport runways, expressways, industrial plants, etc. are in operation, if structural slabs are deformed due to stratum hollowing or compaction subsidence, this may cause serious problems such as danger to public, traffic paralysis or production interruption.
Excavation Section Grouting Reinforcement of Mountain Tunnel Expansion
EXCAVTION SECTION GROUTING REINFORCEMENT OF MOUNTAIN Tunnel expansion-grout consolidation of fractured rock formation and self-drilling rock bolt reinforcement 1. Project Background Due to the functional requirements of an old mountain tunnel, it was planned to remove the lining and excavate at a designated position in the tunnel and set up a 15m long passing bay.
Emergency Grout Plugging of Soil Retaining Piles, Water and Sand Inrush
EMERGENCY GROUT PLUGGING OF SOIL RETAINING PILES, WATER AND SAND INRUSH Instant & retarded composite water-stop grouting technology 1. Project Background When the basement of a project was excavated to about GL-7.0m, water and sand inrush suddenly appeared on the excavation surface and at the gaps between some retaining piles.The construction crew tried manual packing
Bitumen Concrete Highway Subgrade Reinforcement Technology
BITUMEN CONCRETE HIGHWAY SUBGRADE FILLING AND REINFORCEMENT TECHNOLOGY Highway Interchange Road Surface Subsidence and Fracture Repair 1. Project Background The subgrade below the pavement of a highway interchange was interbedded with sandstone blocks and sand shale, with an RQD of about 35-60%, and there were developed joints and fissures. Both sides of this area were