Project Overview The Guangdong Water Resources Allocation Project around Beibu Gulf is a major livelihood water conservancy project for optimizing regional water resource distribution and securing water supply safety in the Beibu Gulf area. It serves as the backbone of the water safety guarantee system for the Guangdong-Hong Kong-Macao Greater Bay Area.
Shield Machine Type CRCHI Φ6440 Earth Pressure Balance Shield Machine
Tunnel Stratum Structure Weak & moderately weathered granite, weak & moderately weathered sandstone, fault breccia, etc. Maximum saturated uniaxial compressive strength: 110MPa ~173MPa
Cutting Tool Configuration 17-inch center double disc cutters + 37 sets of 18-inch single disc cutters + 24 pieces of face scrapers + 12 groups of edge scrapers
Tunneling Stratum Condition Completely weathered granite, moderately weathered granite, slightly weathered granite, mixed with fragmentary strongly weathered granite, silty clay, sandy clay, muddy silty clay, etc. Rock strength: 80~90MPa
Total Tunneling Distance 7723 meters
Tool Condition Good, normal wear
Project Overview Shenzhen Metro Line 16 is a key project of Shenzhen transportation infrastructure construction for the "Eastward Expansion", accelerating the construction of major transportation infrastructure in eastern Shenzhen. The tunnel section between Pingshan Station and Liuliancun Station features typical alternating hard-and-soft strata of weathered granite mixed with silty clay, requiring high-performance reshaping cutters for shield tunneling.
Shield Machine Type CRCHI Φ6440 Earth Pressure Balance Shield Machine
Opening Rate 33%, central opening rate: 38%
Cutting Tool Configuration 18-inch serrated disc cutters + scrapers
Tunneling Stratum Condition Completely weathered granite, moderately weathered granite, slightly weathered granite, mixed with fragmentary strongly weathered granite, silty clay, sandy clay, muddy silty clay, etc. Rock strength: 80~90MPa
Total Tunneling Distance 135 meters
Tool Condition Good, normal wear
Project Overview The Pingjiang Pumped Storage Tunnel Project undertaken by Sinohydro Bureau 8 is a key national energy infrastructure project, and critical for accelerating the construction of pumped storage power stations in central China.
Shield Machine Type CRTEC Φ3630 TBM
Cutting Tool Configuration 17-inch center double disc cutters +19-inch single disc cutters
Tunneling Stratum Condition Medium-fine grained biotite monzogranite, biotite two-feldspar gneiss, granitic mylonite; Uniaxial compressive strength:80~140MPa
Average Tunneling Distance per Set of Tools 350~650 meters
Tool Condition Good, normal wear
Project Overview Fuzhou Binhai Express Line constructed by China Railway 11th Bureau is a key transportation infrastructure project under Fuzhou’s strategy of "Advancing Southward", accelerating the construction of major transportation infrastructure around Fuzhou urban area.
Shield Machine Type CRTEC Φ8640 Single-shield TBM
Cutting Tool Configuration 19-inch disc cutters +17-inch center double disc cutters
Tunneling Stratum Condition Slightly weathered tuff (70~191MPa)
Average Tunneling Distance per Set of Tools 300~500 meters
Tool Condition Good, normal wear
