Device for the construction of underground structures from monolithic extruded concrete

 

(57) Abstract:

The invention relates to the field of underground construction and can be used in the construction of tunnels for various purposes. Task to be solved by the claimed invention is directed, is to improve the efficiency and performance of the device in a weak, quicksand soils. The device comprises a tunneling shield with the mechanism of the excavation, panel jacks, press the casing with hydraulic jacks move, the press ring and the pipe for feeding the concrete mix. The device is equipped with a spacer mechanism located on the sides of the rear of the press casing, movably connected with it and is made in the form of semicircles connected by a hydraulic Jack. One of the half-rings provided with racks on the free end of each of which is fixed the support roller with the possibility of its interaction with the inner surface of the integrally-molded lining of underground structures. 3 Il.

The invention relates to the field of underground construction, namely, devices for the construction of underground structures from monolithic extruded concrete, and can be used in the construction of tons of the e tunnel shield, the thrust wall, power jacks, push the yoke and the supporting device (patent of the Russian Federation 2057941 in class. E 21 D 9/06 (1996)).

The disadvantage of this device is that you cannot use it for the construction of underground structures from monolithic extruded concrete.

The closest technical solution of the essential features is the device for the construction of underground structures from monolithic extruded concrete containing tunneling shield with a mechanism for the development of the soil and flush hydraulic jacks, press the casing with hydraulic jacks move, the press ring and the pipe for feeding the concrete mix. C. the USSR 750084 in class. E 21 D 9/06 from 23.07.1980 year).

The obstacles to achieve the desired technical result is the relatively low efficiency of its work in conditions when in front of tunneling shield areas are either low density of soil (sand, silt rocks, etc), or areas with voids, making it difficult to create the necessary effort compaction of the concrete mix due to the lack of resistance to movement of the tunnel shield, and at the final stage of drilling at the exit of the shield in the trunk.

The problem is solved due to the fact that the device for the construction of underground structures from monolithic extruded concrete containing tunnel shield, provided with a mechanism for the development of the soil and flush hydraulic jacks, press the casing with hydraulic jacks move, the press ring and the pipe for feeding the concrete mix, supplied located by the rear part of the press casing spacer mechanism movably connected with the rear part of the press casing, made in the form of semicircles connected by a hydraulic Jack, with one of the half-rings provided with racks, at the free end of each of which is fixed the support roller with the possibility of its interaction with the inner surface of the integrally-molded lining of underground structures.

Conducted by the applicant's analysis of the prior art, including searching by the patent and scientific and technical sources, has allowed to establish that the applicant is not detected similar, characterized by signs, identical to all the essential features of the claimed invention set forth in the claims.

In Fig.1 shows a General view of the device for the construction of underground built completely retracted in the housing; in Fig. 3 - section a-a in Fig.1 (rod of the hydraulic Jack spacer mechanism extended from the housing).

Device for the construction of underground structures from monolithic extruded concrete includes a housing tunneling machine 1 with rotary mechanism for the development of soil 2, shield jacks 3, the press ring 4, press the casing 5 with the jacks move 6, the pipe 7 for feeding the concrete mixture into the space between the body of the shield 1 and the casing 5. For the tail part of the casing 5 is thrust mechanism 8, adjustably connected by means of rods 9 with the casing 5.

The securing mechanism is in the form of half-rings 10 and 11, connected by hydraulic jacks 12, with one of the half-rings (upper semicircle of 10) provided with a rack 13, the free end of each of which is fixed the support roller 14 with the possibility of its interaction with the inner surface of the integrally-molded lining 15.

The device operates as follows.

After filing through the pipe 7 of the concrete mix in opalubochnoj space is carried out by means of shield jacks 3 move the tunneling shield forward with simultaneous compaction of the concrete mix of the press ring 4.

the horon, the opposite movement of the shield, is compacting the concrete mixture with the desired pressure, the movement of the press casing 5 by means of hydraulic jacks 6 and, accordingly, the spacer mechanism 8 on the rollers 14. When this half rings 10 and 11, the spacer mechanism occupies the position shown in Fig.2.

When the nature of the soil or the presence of voids mechanism before excavation after the next cycle of the concrete feeding do not provide the desired pressure on the concrete mix, the rods of the jacks 12 are nominated and half rings 10 and 11 occupy the position shown in Fig.3, respiraci in the inner surface of the integrally-molded lining of underground structures. In this case, the movement of the press casing does not occur, and there are rods of the hydraulic cylinders 6, forcing the hydraulic fluid from the rod end, creating a force sufficient to ensure compaction of the concrete mix.

Thus, the presence of managed spacer mechanism allows movement of the shield and the compaction of the concrete mix, regardless of the density of the soil is in front of the shield, and also in cases of the presence of voids before heading shield, which increases the efficiency is savannas lining of underground structures.

Device for the construction of underground structures from monolithic extruded concrete containing tunnel shield, provided with a mechanism for the development of the soil and flush hydraulic jacks, press the casing with hydraulic jacks move, the press ring and the pipe for supplying the concrete mixture, characterized in that it has located on the sides of the rear of the press casing spacer mechanism movably connected with the rear part of the press casing, made in the form of semicircles connected by a hydraulic Jack, with one of the half-rings provided with racks, at the free end of each of which is fixed the support roller with the possibility of its interaction with the inner surface of the integrally-molded lining of underground structures.

 

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2 dwg

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