Tunnel shield


E21C27/30 - by jaws, buckets, or scoops that scoop-out the mineral

 

(57) Abstract:

The invention relates to underground construction. It aims at improving the performance and efficiency when drilling in various mining and geological conditions. Tunnel shield has a body with a sealed septum that separates the bottom-hole zone of high pressure and a zone of atmospheric pressure, panel jacks, the excavator body with swivel boom with hydraulic cylinder in its rotation about the transverse axis of the shield and scoop element located at the end of the boom, and bucket loader. Along the perimeter of the roof part of the sealed partitions are made openings, which are placed in the additional bucket elements, each of which is movably connected to the cylinder axial displacement and cylinder rotation. The said cylinders are placed in an airtight hollow elements arranged in the openings around the perimeter of the dome part of the sealed partitions. The bucket cylinders elements on the perimeter of the roof part of the sealed bulkhead and cylinder of the excavator body with hydro-pipelines are located in the area of atmospheric pressure. 1 C.p. f-crystals, 4 Il.

Pour through tunneling shields, equipped excavator working body.

The famous design of the shield for tunneling, comprising a housing with a partition separating the zone of high pressure and a zone of atmospheric pressure, panel jacks, excavator working body with swivel boom and bucket, conveyor-loader and means to hold the bottom when drilling in loose and unstable soils, made in the form of rotary plates (Tunnels et ouvrages souterrains, 1996, No. 137, p. 255-259).

The obstacles to achieve the desired technical result is the relatively low efficiency of tools for developing and retaining slaughter from the collapse of the excavation in sandy and unstable soils, including wet.

Also known tunneling shield, comprising a housing with a sealed partition separating the zone of high pressure and a zone of atmospheric pressure, panel jacks, the excavator body with swivel boom with hydraulic cylinder in its rotation about the transverse axis of the shield and scoop element located at the end of the boom and conveyor-loader (French patent N 2676500, CL E 21 D 9/06 from 20.11.1992 year).

The reasons that impede distdct to keep the bottom from the collapse of the excavation in sandy and unstable soils around the perimeter of the development of the face, that reduces the performance of the tunneling shield.

Task to be solved by the claimed invention is directed, is to improve the performance and efficiency of the tunneling shield when driving in various mining and geological conditions in frequently changing conditions along the tunnel, including water-saturated soils.

The problem is solved due to the fact that in the tunneling shield, comprising a housing with a sealed partition separating the area with high pressure and a zone of atmospheric pressure, panel jacks, excavator working body with a rotary shaft, provided with a hydraulic cylinder in its rotation about the transverse axis of the shield and scoop element located at the end of the boom, and the conveyor-loader, on the perimeter of the roof part of the sealed partitions are made openings, which are placed in the additional bucket elements, each of which is movably connected to the cylinder axial displacement and cylinder rotate, these cylinders are placed in hollow elements, tightly arranged in the openings around the perimeter of the dome part of the sealed partitions. The cylinders Kovshov is on with hydro-pipelines are located in the area of atmospheric pressure.

Conducted by the applicant's analysis of the prior art, including searching by the patent and scientific and technical information sources, and identify sources that contain information about the equivalents of the claimed invention, has allowed to establish that the applicant is not detected similar, characterized by signs, identical to all the essential features of the claimed invention, and the definition from the list of identified unique prototype as the most similar set of features analogue has identified a set of essential towards perceived by the applicant to the technical result of the distinctive features in the claimed object set forth in the claims. Therefore, the claimed invention meets the criterion of "novelty" in the existing legislation. To verify compliance of the claimed invention to the requirement of inventive step, the applicant conducted an additional search of the known solutions in order to identify characteristics that match the distinctive features of the prototype of the characteristics of the claimed invention, the results of which show that the claimed invention is not necessary for the expert in the obvious way from the prior art.

In Fig. 1 shows PG. 1 (extended position of bucket elements).

In Fig. 4 - callout B in Fig. 1 (retracted position of bucket elements).

Tunnel shield includes a housing 1 is sealed by a partition 2, shield jacks 3, excavator working body of the arrow 4, consisting of the supporting part 5 and the telescopic part 6. On the telescopic part 6 fixed rotary bucket item 7 on two axes 8 and 9. Inside the boom 4 is posted cylinders 10 and 11, one of which (POS. 10) connected to the axle 9, and the other (Ref. 11) is connected with the supporting part 5 of the boom 4. Swing arm 4 is placed in a cylindrical yoke 12 on the outer side of which is fixed a gear wheel 13, kinematically connected to the drive element 14 in the form of a hydraulic motor. On the outer side of the cylindrical casing 12 is also fixed cylinder 15 connected to the supporting part 5.

Along the perimeter of the roof part of the hermetic partition 2 is posted additional bucket elements 16 mounted on axles 17 and 18. The axle 17 is connected to the hydraulic cylinder 19, which are located inside of the hollow element 20, which also hosted the hydraulic cylinder 21 connected to the hollow element 20 and the body of the shield 1.

Swing arm 4 and the hollow elements 20 were the first conveyor 24 with the belt conveyor 25, transfer of soil from areas of high pressure 26 in the area with atmospheric pressure 27.

For compressed air or the possibility of peoplegroup on tight partition 2 posted by nozzle 28.

The device operates as follows.

In the process of sinking in sustainable soil is the development of the face in front of the shield with the help of bucket elements 7 and 16. It is possible to separate the main element 7 and additional elements 16 and simultaneously their work.

By means of hydraulic cylinders 11 and 21 is a longitudinal movement of the boom 4 and the hollow element 20, respectively, and by means of hydraulic cylinders 19 is rotating element 16, while either the extended or retracted position additional bucket elements.

When changing geological conditions on the unstable and unsustainable tend to conclusions soils additional bucket elements 16 are moved in the longitudinal direction, fulfilling the role of the retractable supporting canopies, providing protection of the face from landslides and prevent gopalakrishna.

When meeting with Postoico the fight, additional shovel occupy the position shown in Fig. 4, acting as a pivot suspension plates.

Simultaneous rotation of arm 4 relative to the transverse axis by means of the hydraulic cylinder 15) and rotating it around its longitudinal axis by means of the actuator 14) increase the efficiency of development of the face, and presence of additional bucket of elements functions as portaretratos actuators and supporting roofs and suspended slabs increases the efficiency and productivity of the tunnel shield in complex hydrogeological conditions.

1. Tunnel shield, comprising a housing with an air-tight partition separating the bottom-hole zone of high pressure and a zone of atmospheric pressure, panel jacks, the excavator body with swivel boom with hydraulic cylinder in its rotation about the transverse axis of the shield and scoop element located at the end of the boom, and a rotary excavator, characterized in that the perimeter of the dome part of the sealed partitions are made openings, which are placed in the additional bucket elements, each of which is movably connected to the cylinder axial paramesh, located in the openings around the perimeter of the dome part of the sealed bulkhead.

2. Tunnel shield under item 1, characterized in that the cylinders bucket elements on the perimeter of the roof part of the sealed bulkhead and cylinder of the excavator body with hydro-pipelines are located in the area of atmospheric pressure.

 

Same patents:

The invention relates to the field of mining and construction, namely, the method of pipeline construction in unstable and heterogeneous soils

The invention relates to the field of underground construction and can be used for the manufacture of tunnels and other underground structures

The invention relates to the construction of crossings of trunk pipelines under the highways and railway embankments in the soil of I - IV categories

Tunnel shield // 2150582
The invention relates to the field of underground construction, namely, the tunneling shields, and can be used in the construction of tunnels for various purposes in areas with different kinds of soil

The invention relates to underground construction and can be used for laying pipelines underground method, when conducting curved openings of small diameter

The invention relates to underground construction and can be used in the manufacture of tunnels using the shield driving

The invention relates to the field of tunnel construction, namely the construction of tunnels by shield tunneling method, in particular for the construction of rectangular pedestrian tunnels and tunnels special purpose method of forcing

FIELD: mining industry.

SUBSTANCE: device has frontal, two side and two conical working tools with rock-destroying tools on outer surfaces, drives, rigidly connected to axes of each working tool, and displacement mechanism, connected to guides, placed at angle relatively to each other, which angle is determined from mathematical expression. Frontal and each of side working tools are made in form of two rotation bodies, having arced forming lines with given value of convexity. Axes of frontal working tool and axes of two conical working tools are rigidly connected to guides, axes of upper rotation body of frontal working tool being displaced relatively to axis of its lower rotation body towards pit-face, and axes of each pair of side working tools are jointly connected to each other and to guides. Frontal working tool may be made in form of several modules.

EFFECT: higher efficiency.

2 cl, 4 dwg

Tunneling method // 2259479

FIELD: underground structure building, particularly for forming underground tunnels and collectors.

SUBSTANCE: method involves excavating ground with cutting tool; regulating kentledge pressure in rotor chamber and backfilling annular tubing space. Kentledge pressure is automatically adjusting with that of enclosing ground exerting pressure on shield case by means of membranes. The membranes are installed in shield case and are permanently subjected to actual enclosing ground pressure. Backfilling operation is performed through end part of shield case immediately after shield case movement.

EFFECT: prevention of ground and object deformation in tunnel boring machine movement area, increased backfill layer elasticity and tunnel lining impermeability.

4 cl, 6 dwg

FIELD: tunnel construction, particularly devices to construct hydroelectric power plant floodgates and to build motor roads and rail roads in mountains.

SUBSTANCE: method involves creating conditions favorable for chemical reaction between chemical element oxides basically constituting rock and graphite for rock fusion. For this rock is heated up to high temperature at face by thermal electric arc energy transmission through metal front tunneling machine wall. Electric arc is generated between electrodes inside discharge chambers arranged on inner surface of front tunneling machine wall. Electric current is supplied to electrodes via graphite mass moving through electrically-insulated pipes. Graphite is forced via electrodes and introduced into face through nozzles connected to front tunneling machine wall.

EFFECT: possibility to regulate electric current power and graphite mass to select necessary excavation regimes.

FIELD: mining.

SUBSTANCE: method of boring hard rock by means of tunnel boring machine equipped with disks of hardened steel projecting from cutting head consists in supply of foamed water liquid to cutting head; this composition corresponds to surface active substance -SAS and lubricating material - polyethylene oxide with molecular wt from 4.500.000 to 8.000.000. The said ingredients are measured separately in a water form, are added into water and are transformed into a foam using anionic or nonionic SAS; the said composition is obtained by dilution of concentrate with water on site.

EFFECT: reduced wear of cutting components; increased boring efficiency.

4 cl

FIELD: mining.

SUBSTANCE: invention is related to mining, in particular to mechanised performance of underground mine tunnels with round shape of cross section. Method for performance of underground mine tunnel of round cross section includes formation of oriented cavity in the Earth bowels, cutting of helical and longitudinal radial channels in edge zone of tunnel in surrounding rock mass, loading and transportation of broken muck, maintenance of stripped area by erection of support and organization of ventilation. Together with cavity formation they cut three longitudinal radial channels, evenly distributing them in plane of tunnel cross section. At the same time one of longitudinal radial channels is oriented along line of most probable largest action of external load from forces of rock pressure. Damaged rock is removed from longitudinal radial channels and loaded in transport vehicle. In longitudinal radial channels they install embedded elements, to which support elements are connected. Besides depth of longitudinal radial channel makes at least half of radius of cross section of produced tunnel.

EFFECT: higher reliability of mine tunnel maintenance in operational period.

3 dwg

FIELD: mining.

SUBSTANCE: invention is related to mining industry, in particular to shield driving of tunnels, and may be used in shield driving of through collector tunnels with concrete lining. Method for shield driving of tunnel consists in erection of shield chambers by method of "slurry-type wall" for assembly and turns of shield on track of arranged tunnel. Walls of shield chambers, at least those, where holes are provided for passage of shield, are made of concrete, having compression strength of not more than 11.5-14.5 MPa, are reinforced with glass-plastic reinforcement from rods with diametre from 4 to 10 mm with ultimate strength in case of cutting across fibres of at least 165 MPa and developed by working element of shield. Formation of concrete lining, in process of collector tunnel driving, at least in joint of shield chambers walls and on length of tunnel from two to ten of its diametres, is carried out by at least two concentric layers, between which additional internal hydraulic insulation layer is arranged, and application of hydraulic insulation coating onto inner surface of concrete lining is carried out after complete drying of surface layer of tunnel walls.

EFFECT: improved reliability of tunnel arrangement and its hydraulic insulation, higher speed of underground communications construction.

2 cl

FIELD: mining.

SUBSTANCE: birotating tunnel shield unit consists of three sections. Two front sections, starting from bottomhole, are mounted on diaphragm by means of ball runnings with toothed collars of conical gear, engaged at diametral opposite sides with master conical gears of section rotation drives arranged on diaphragm, which is mounted at front end of beam with drive by means of Hooke joint and hydraulic cylinders with stems, fixed on beam and diaphragm by means of journals. Beam with drive is mounted in guides of back section, at the same time auger with a separate drive is mounted inside beam. On external surface of back section there are elements of conrotation arranged in the form of plates aligned along longitudinal axis of section, at the same time on external surfaces of front rotary sections there are helical blades arranged with opposite direction of winding. Besides, small actuating elements with individual drives and sleeves with augers are mounted upstream each blade and element of conrotation. Hollow beam is mounted in the centre of diaphragm, inside which there is an auger with drive fixed, at the same time outside - at bottomhole of beam there is a socket and loading rotor with drive mounted, connected to the main actuating element.

EFFECT: unloading of back section from torque and from longitudinal braking force.

6 dwg

FIELD: mining.

SUBSTANCE: tunnelling header unit comprises serially arranged head and tail sections. The head section comprises a helical blade on the external surface, an actuator and an auger mechanism for broken mass discharge, besides, a rotation mechanism is also located in the head section. The tail section comprises longitudinal support elements, aligned along the longitudinal axis of the unit, a drive of the rotation mechanism. The sections are connected to each other with the possibility of the head section rotation relatively to its longitudinal axis. The rotation mechanism is arranged in the form of a hollow shaft, where two wave generators are installed, being arranged with eccentricity relative to the axis of the driving shaft, a geared crown arranged on the inner surface of the head section, a separator connected to the end section and intermediate solids of revolution. Number of teeth in the geared crown is more than the number of intermediate solids of revolution by one. The sections have a rigid kinematic link in the axial direction, which consists of two touching circular ledges, one ledge is located on the separator, the second ledge is arranged on the inner surface of the head section. The driving shaft is installed in rolling bearings, with one bearing installed in the head section, and the other one - in the end section. The driving shaft at the side of the stripped area has a driving gear arranged with the possibility of rotation from motors via a motor gear, and the motors are fixed at the inner surface of the end section.

EFFECT: improved reliability of the unit operation, loading capacity of the unit drive and efficiency of tunnelling, expanded area of the unit application.

5 dwg

FIELD: mining.

SUBSTANCE: tunnelling combine (90) for horizontal mines comprises a rotary cutting head (93), where there are many cutting assemblies (10) installed as capable of rotation. Multiple units of instruments (50) are connected with a rotary cutting head, at the same time each unit of instruments comprises a distal end in contact with the appropriate cutting assembly. Units of instruments comprise multiple sensors, including an accelerometer (32), a magnetometer (33) and a temperature sensor (34) to monitor the appropriate cutting assembly. Sensors are installed at the remote end of units of instruments pressed for contact with a cutting assembly. Units of instruments comprise a wireless transceiver and are connected to each other into a circuit of data transfer or a peer-to-peer network. A source (176) of power supply, such as a battery pack, is provided for each unit of instruments. Sensor data may be used to control operation of a tunnelling combine for horizontal mines and/or for monitoring condition of cutting assemblies.

EFFECT: enhancing effectiveness and reliability of tunnelling operation.

27 cl, 7 dwg

Duplex geovehicle // 2469192

FIELD: mining.

SUBSTANCE: duplex geovehicle consists of three sections. Two front sections are mounted on load-carrying beams with drives by means of ball races with toothed rims of bevel gear. Section rotation drives are located on diaphragms that are mounted on front ends of load-carrying beams with drives. Each load-carrying beam with a drive is mounted in the guides of rear section with possibility of its retraction. A screw with a separate drive is mounted inside the load-carrying beam. On external surfaces of front rotating sections there located are screw blades with opposite winding direction. Before each blade there mounted are small actuating elements with individual drives and sleeves with screws. In the centre of diaphragms there mounted are hollow beams inside which screws with drives are mounted Flared ends and loading rotors with drives are mounted on the front side of face ends of hollow beams. Drives and actuating elements of rear section are located on its front wall. Outside the front wall: at the top and at the bottom - horizontally, and in the centre - vertically. Drag conveyor, tray and screw with a drive are located behind the front wall inside rear section.

EFFECT: increasing the strength of out-contour layer of rock mass.

5 dwg

Up!