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Products/Services
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Disaster recovery tunnel repair mortar spraying construction system 'M-PAC'(1)
Low dust and low rebound spraying is achieved with a compact system.
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Tunnel Boring Machine Shotcrete Construction "Subshot System"(2)
The Denka Subshot System is a system that continuously supplies a special fiber-reinforced mortar called "Denka PF Mortar" using a mixing pump, and combines it with a liquid quick-setting agent called "Denka Subshot L" to enable continuous spraying construction from the rear cart of a TBM (Tunnel Boring Machine) and other equipment. This allows for rapid construction, reduction of in-tunnel work, and improvement of the working environment.
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Tunnel construction electric dust collector "Eco Clean X"(1)
Since delivering the first unit of the electric dust collector "Clean Jet" for tunnel construction in September 1999, it has been adopted at many tunnel construction sites up to the present day. Subsequently, we developed "Eco Clean" by improving and modifying the Clean Jet, and delivered it to various sites. Following that, we have been engaged in research and development aimed at further enhancing performance. "Eco Clean X" was independently developed with the aim of providing a more user-friendly and efficient electric dust collector, based on the accumulation of know-how that our company has cultivated at construction sites.
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Tunnel excavation work suction collection ventilation system "Eco Station"(1)
The self-propelled crawler cart, dust collector, and telescopic duct integrated tunnel excavation suction and collection ventilation system eco-station consists of an electric dust collector, a self-propelled crawler cart, and a telescopic duct.
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Suppressing tunnel subsidence: "Preload Shell Method"(1)
When constructing structures for civil engineering works (such as roads, railways, and waterways), excavation work occurs for tunnels, shields, shafts, and culverts. During excavation, the geological conditions of the ground, the soil cover, and the functional characteristics of the load change, resulting in complex loads on the tunnel. To support these loads, support structures are used. Support structures are installed before the load is applied, but a gap arises between them and the ground, and if this gap is not filled, the ground will settle. To suppress this settlement early and stabilize the tunnel, support members that smoothly and quickly transmit the load to the support structures and the ground are necessary. A groundbreaking settlement suppression method developed for this purpose is the "Preload Shell Method," which involves setting a bag (jacket) between the ground and the support structure and filling the bag with non-shrink mortar, thereby integrating the support structure and the ground to ensure reliable support capacity.
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Secondary lining of shield tunnels 'TDR Shot Lining System'(3)
This lining system is based on a wet spraying method using high-performance mortar for the repair of deteriorated concrete sections, and it was developed to fill the gaps between steel segments as well as between the steel segments and the finished surface of the lining, which is expected to be difficult with conventional cast-in-place lining concrete.
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Heatstroke prevention in tunnels "M Cool"(1)
Use the M Cool cooling device for heatstroke prevention!!
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PF Mortar Spraying System(1)
The "PF Mortar Spraying System" enables low dust and low rebound spraying to be achieved in a compact manner.