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Construction Methods & National Patents

CRTG has developed core technologies with proprietary intellectual property rights in tunnel and underground engineering, which has reached international advanced level. CRTG developed drilling and blasting method to refine exquisite technology under specific complicated geological conditions. Originated “boring in shallow overburden depth” is widely applied in municipal and metro fields. Shield TBM method plays an unique role in sea-crossing projects. CRTG owns 15 National Invention Patents, 34 State Utility Model Patents and 1 software copyright. In addition, CRTG developed 102 construction methods in provincial and state levels.

State-Level Construction Methods

● Construction Method for Prevented Isolation Pile and Wall in Construction of Pilot Tunnel;
● Construction Method for Extra-large Tonnage Pile Foundation Underpinning Work;
● The Series Construction Methods by means of Compound Shield TBM;
● Construction Method of Segment Lining in Passing Mined Tunnel by TBM;
● Construction Method Applied to Watertight Gas Gallery in the Underground Bare Rock;
● Construction Method for Grouting Engineering in the Abundant Water Ingress, Deep Overburden and Filling-type Karst Cave;
● Construction Method of Slurry TBM with Pressure Applied to Complicated Stratum including High-pressure, Small-section (φ2~4.2m) and Underwater Tunnel;
● Shallow Mining Method Applied to Silt Stratum for Constructing Municipal Underpass;
● Construction Method Applied to Complicated Stratum and Shallow Underwater Tunnel by Means of EPB Shield Machine;
● Shallow Mining Method Applied to Tunnel and Metro Projects;
● Construction Method Applied to Large-span Tunnel in Full-face Tunneling Excavation (Construction Method of Deep Hole Blasting Operation Applied to Double-track Railway Tunnel);
● Construction Method of Cut-and-Cover Top-Down Applied to Strip Foundation;
● Construction Method of Microvibration Blasting Applied to Municipal Underground Project;
● Construction Method of Sand Consolidation, Water Blocking and Grouting Applied to Saturated and Dynamic Water Sand Stratum by means of TSS Pipe;
● Construction Method of Elastic and Monolithic Track Bed;
● Tunneling Construction Method Applied to Railway Station with Three-lines, Large-span and in Soft Rocks;
● Construction Method Applied to Railway Soft Rocks by means of Open-typed Hard Rock TBM.

National Patents

● A Connection Method Applied to Grid-type D-wall with Rigid Joints;
● Pile Foundation Underpinning Method;
● Full-circle One-time Lining and Separated Guide Beam Formwork Jumbo;
● Shield TBM Disc Cutter Opening Ratio in Shield TBM;
● A Back Lining Grouting Material and Making Method Applied to Early-strength, Water-resistance, Dispersion and Dissolution-resistance Shield Tunnel;
● Segmental and Retrograde Grouting Method by means of Hole Opening Grouting Sealing Pipe in a Type of Outer-mixed Double Pipes;
● Segmental and Retrograde Grouting Method by means of Hole Opening Grouting Sealing Pipe in a Type of Inner-mixed Double Pipes;
● Construction Method Applied to Tunnel Continuous Mucking, Concrete Lining and Synchronized Excavation;
● Layout Structure Applied to Drill and Blast Tunneling Method by means of Steel Formwork Jumbo and Conveyor Belt;
● Layout Structure Applied to TBM Tunneling Method by means of Steel Formwork Jumbo and Conveyor Belt;
● Screw Conveyor;
● The Foam Injection Device Applied to Spoil Improvement System by means of Composite Shield TBM;
● Segment Erector;
● Shield TBM Cutterhead Driving and Frequency Converting Control System;
● Bentonite Injection into Shell Lubricating System;
● A Type of Tunneling with Synchronized Lining Formwork Jumbo;
● Segmental and Repeatedly Grouting Device with Small Conduits;
● Drill Rod Backward and Segment Grouting Device;
● Hole Drilling Segmental Advance Grouting and Water Blocking Device;
● Hole Opening Sealing and Double Pipes Backward Grouting Device;
● Steel Pipe Hole Bottom Grouting Device;
● Small Conduits, Outer Valve and Single-Type Segmental Backward Grouting Device;
● Highland Tunnel Ventilation and Air Pre-heating Device;
● Water Curtain Dust Catcher;
● Tunnel Ventilation Volume Adjusting and Bypass Tee;
● Tunnel Gas Disperser;
● Automated Remote Monitoring Device Applied to Medium Column of Cut-and-Cover Top-down Structure;
● Hole Opening Pipe Installation Device Applied to High-pressure Water Ingress Drill Holes;
● Hole Opening Pipe Applied to High Water Pressure Grouting Operation;
● Highland Extra-long Tunneling Axial Ventilator;
● A Type of Inner Hole Grouting Sealing Device;
● Tunnel Ventilation Pipe Breakdown and Ventilator On/Off Sensor;
● Ventilation Device Applied to Inclined Shaft by means of Baffle Plate;

2016年国家科学技术进步奖二等奖——跨江越海大断面暗挖隧道修建关键技术与应用
2017年国家科学技术进步奖二等奖——高速铁路狮子洋水下隧道工程成套技术
2018年国家科学技术进步奖二等奖——异形全断面隧道掘进机设计制造关键技术及应用
2018年国家科学技术进步奖一等奖——地质工程分布式光纤监测关键技术及其应用
国家科技进步奖——大瑶山隧洞
国家科技进步奖奖杯——大瑶山隧道
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Chaoyang District, Beijing City, P. R. China
Email: info@crtg.cn

CRTG 

No.2 (Self-Made), West Side of Gongye 4th Road,

Mingzhuwanqibu Area,

Nansha District,

Guangzhou City, Guangdong Province, P. R. China

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