Mud water balanced-type ring-shaped shield machine
A mud-water balance and shield machine technology, applied in wellbore lining, tunnel lining, underground chambers, etc., can solve the problems of surrounding soil deformation, increase excavation depth, failure of abandoned tunnels, etc., to achieve convenient transportation, saving The effect of shield space
Inactive Publication Date: 2012-12-05
TONGJI UNIV
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Problems solved by technology
However, in the future when the urban underground space is about to become saturated, on the one hand, changing the route will inevitably lead to more crowded underground space, and increasing the excavation depth will inevitably lead to increased construction difficulty and risks; on the other hand, abandoned tunnels will inevitably occupy Valuable underground space, at the same time, abandoned tunnels may be destroyed and fail at any time, causing deformation of the surrounding soil, and affecting the safety of adjacent pipelines or buildings, which is a great potential risk
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[0028] Such as figure 1 , figure 2 and image 3 As shown, the annular shield machine of the present invention includes a casing 1 , and the front end of the casing 1 is an annular cutter head 2 . A hob 17 and a scraper 18 are simultaneously arranged on the ring-shaped cutter head 2, and the hob 17 breaks relatively hard stones by extruding and rolling itself. Run into soft soil layer, hob 17 loses its effect, this moment relies on scraper 18, relies on the rotation of cutter head 2 bearings 25, cuts soft soil. The actual shield propulsion is a combination of the two knives.
[0029] Such as figure 1 and figure 2 As shown, the rear portion of the cutter head 2 is a mud water bin 3, and the mud water bin 3 is connected with the mud pump 4. The soil cut by the shield machine enters the mud tank 3 through the holes distributed on the cutter head 2, and is mixed with the input bentonite mud to form high-density mud. Under the condition of maintaining a certain pressure in t...
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The invention relates to a mud water balanced-type ring-shaped shield machine comprising a ring-shaped case, a mud water cabin, a slurry pump, a slurry processing device, two ring-shaped sealing devices, a plurality of thrust cylinders, a bearing and a duct piece disassembly and assembly device used for disassembling old duct pieces and disassembling new duct pieces, wherein, the head end of the case is provided with a cutter head which is uniformly provided with a plurality of hobbing cutters, scrapers and orifices; the mud water cabin is arranged in the case, and is connected with the orifices; the slurry pump, the mud water cabin and the slurry processing device are connected; the two ring-shaped sealing devices are arranged between the case and the old duct pieces at intervals; the plurality of thrust cylinders are evenly arranged at the periphery of the case; the bearing penetrates in the case; and the duct piece disassembly and assembly device is arranged on the bearing. The mudwater balanced-type ring-shaped shield machine provided by the invention is convenient and efficient, and has wide use range.
Description
technical field [0001] The invention relates to a tunnel reconstruction mechanism, in particular to a mud-water balance ring shield machine. Background technique [0002] In recent years, the construction of urban subways and common trenches has continued to develop, and the number and scale of underground tunnels have also increased. With the increase of operation and use time, the performance and quality of the built tunnels will inevitably decline, and will eventually lose the safe use performance. At the same time, with the gradual expansion of underground space development, the urban underground space will become more and more crowded. In order to meet the growing urban traffic demand, it is possible to expand the diameter of the subway tunnel to form a multi-layer three-dimensional traffic system. Therefore, in order to ensure the normal operation of urban traffic and people's daily life, it is necessary to change the route to build a new tunnel or to transform the ol...
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IPC IPC(8): E21D9/08E21D11/10
Inventor张子新黄昕胡欣雨
OwnerTONGJI UNIV