On 1th March , Shield Machine No. 001 of China Railway Sunward started successfully in the East section of Yueyang Avenue City Drainage and Sewerage New Pipe Culvert Project, and successfully opened the fourth section of the "journey" to help the construction of Yueyang City Municipal Pipeline Corridor Project, which is a major project of people's livelihood.
Guangzhou Central Urban Underground Comprehensive Tunnel Project
The tunnel mainly passes through silty medium-coarse sand, powdery fine sand layer, medium-coarse sand layer, silty soil, plastic powdery clay, fully weathered clastic rock, strongly weathered conglomerate-bearing coarse sandstone, strongly weathered muddy siltstone, moderately weathered coarse sandstone, moderately weathered muddy siltstone, slightly weathered conglomerate-bearing coarse sandstone.
Guangzhou Central Urban Underground Comprehensive Tunnel Project
28#～29# section mainly passes through strongly weathered muddy siltstone, moderately weathered marl, strongly weathered andesite, moderately weathered andesite, slightly weathered andesite; 29#～30# section mainly passes through strongly weathered muddy siltstone, moderately weathered muddy siltstone, slightly weathered muddy siltstone.
Changsha Wanjiali Road 220KV Power Tunnel
Wanjiali Road 220KV Power Tunnel Teli West Road Intersection-Torch Intersection section length 6601.9m, the main strata for the conglomerate, pebbles, gravel, silty clay, muddy siltstone, the tunnel is basically along the Wanjiali Elevated Direction, under the Wanjiali Elevated, Liuyang River, Changsha Metro Line 3, the complexity of the section line environment, the shield construction settlement control requirements are high, and the tunnel exists in a number of radii The tunnel has a number of continuous turns with radius of 150 meters.
Guangzhou Central Urban Underground Comprehensive Tunnel Project
The main strata crossed by the section are strongly weathered sandstone, gravelly sandstone, strongly weathered muddy siltstone, medium weathered medium coarse sandstone, medium weathered sandy mudstone, mudstone, medium weathered muddy siltstone, slightly weathered medium coarse sandstone, gravelly sandstone, slightly weathered muddy siltstone.
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