Force manner and its force device null of suffering force ones such as concrete, mortar and

摘要

PURPOSE:To speedily transport the under-pressure transported substance with high efficiency by continuously transporting the substance under pressure so as not to return into a main transporting hose and applying pressure into the middle part of the main transporting hose by the compressed air, in the title device for constructing a retaining wall. CONSTITUTION:The under-pressure transported substance such as concrete is supplied into a main under-pressure transporting device A from a mixing/agitation device C and continuously supplied under pressure into a main feeding hose 1. The pressure of the compressed air supplied from the pressurizing coupling 2 of the main feeding hose 1 is continuously applied onto the under-pressure transported substance in the main feeding hose 1 through a sub under-pressure transporting device B. Therefore, the under-pressure transported substance can be transported under pressure by the total pressure of the under-pressure transportation pressure of the under-pressure transporting device A and the sub under-pressure transporting device B, and the compressed air is in the properly dispersed state inside the under-pressure transported substance. Therefore, clogging is prevented, and the speedy under-pressure transport can be realized with high efficiency.