| 摘要 |
PROBLEM TO BE SOLVED: To efficiently convey earth excavated in a shaft, such as earth excavated in a deep foundation and earth excavated for an increase in width, which is produced from sites other than a working face. SOLUTION: A muddy water fluid transport facility for use in muddy water type shield construction is utilized to fluid transport not only excavated earth from a working face but also earth excavated in a shaft. For this, the earth excavated in the shaft is mixed with muddy water, and the mixed muddy water is forcibly fed through a mud discharge line 3. A force-feeding device 1 is provided therefor. The force-feeding device 1 includes a mixing tank 6 for mixing and agitating together the earth excavated in the shaft and the muddy water fed from a mud feed line 4, and a force-feed pump 7 for forcibly feeding the mixed muddy water to the mud discharge line 3. The earth excavated in the shaft is crushed by a crusher 5. A rotary pump 8 and a portable conveyor 9 are provided as conveying means for conveying the earth excavated in the shaft to the crusher.
|
