Method of tunnelling in rocks

FIELD: mining.

SUBSTANCE: method of tunnelling is characterised by the fact that rocks are broken at a bottomhole with a fluid working agent under pressure, at the same time mines and wells are arranged along the perimetre and along the frontal area of the bottomhole; the distance between these mines is chosen with account of breaking action at rocks with a reheated gas or steam-gas working agent under pressure, which is generated with a multi-module jet plant and its working devices, and also extended elastic tubular elements are used, filled with an energy composition that generates a reheated agent under high pressure, with the help of which the specified mines and wells are arranged in the rock massif; the massif is damaged and ground. The bottomhole is cleaned by pressure at the bottomhole end to damaged parts of the rock massif with a working medium in the form of reheated steam-gas phases under pressure.

EFFECT: efficient complex action at a bottomhole with higher efficiency, lower labour and power inputs.

6 cl

 

The invention relates to the mining industry and in technology education tunnels and workings of a significant cross-section for use as: transport, ventilation, for laying various communications.

In the technology of tunneling of a known individual and complex processes, including basic operations: development and destruction of rocks on the bottom, crushed, removal from areas of the face passable production; using various mechanical tunneling shields and devices [Dmitriev A.P. thermal and combined fracture of rocks, M., Nedra, 1978; Kutuzov, B. N. The destruction of rocks by explosion, M., Nedra, 1980; SU 822604, E29D 9/00; SU 828761; EN 2207973, 2002; SU 1480391; Velichkin B.A. Construction of tunnels, subways, M, C, 1971; SU 924389, E21D 11/10, 1977; EN 2148699, EV 25/00, 1998.]. The last of these decisions is the closest to the technological substance and achieved a positive result.

Significant and obvious disadvantages of this method working driving are: significant labor and high energy costs on the operations of the destruction of rocks on the bottom together with minor performance and low efficiency.

The technical task and the technological positive result of the proposed method is b is more efficient and comprehensive impact on the bottom with increased productivity, reduced labor and energy costs for individual operations and the whole process of destruction of rocks on the bottom, remove them and the education of the barrel passable tunnel.

The specified task and the technical result is achieved in the method due to the fact that the method of drilling a tunnel in the rocks is characterized by the fact that the destruction of rocks are fluid working medium, forming a linear formulation for the normal contour of the tunnel, also held separate horizontal or slanted wells with downhole end of the tunnel, between these wells form a curved and straight production in different directions square face, a pulse of power effect of cavities traversed wells and mines destroy the monolith downhole portion passable tunnel, parts, debris and sludge destroyed rock is separated from the bottom force fluid working environment and removed from the trunk of a patent tunnel.

The method is also characterized in that develop along the contour of the tunnel to form a curvilinear variable radius of curvature and cross-section.

The method is also characterized in that as a working agent for the rock fracture using compressed gas and steam environment.

The method, originally characterized by the fact that as a working agent use overheated liquid and gaseous phase Energoatom the Alov.

The method is also characterized in that the sources of the working agent for the destruction of the breed is used elastic elongated tubular elements, equipped progrevaemost working environment.

The method is also characterized in that for generating the working agent applied to the face, use multimodal reactive devices.

The way of tunneling as follows. Using these known technical means, mainly design Ahipping lead the development and destruction of rocks on the bottom, and perform these technological operations original. Initially are sinking separate horizontal or slightly inclined (at an angle of about 10-15 to the horizontal) wells with a diameter of 120-150 mm along the axis and at a distance of 2-3 diameters of the wells from one another according to the "Daisy" using multimodal reactive devices; forming a tunnel section perform straight and curved generation of variable cross-section with a curvature of the arc - radius tunnel to 0.1 this radius; all of these wells and production are the low voltage grips mountain massif in different directions of the cross-section of the tunnel. This condition is performed to prevent possible spontaneous treshinoobrazovaniya in this array is, which could lead to uncontrolled spontaneous destruction of the educated "skeleton" in this array breed. Instrument diagnostics using DCU-emitters and receiver detectors located in the studied wells and mines, determine the strength data of the arch of the tunnel and bridges between mines and wells. According to the received strength of the jumper selects the type of elastic charges on the necessary destructive ability, which is formed in the elongated tubular elements, equipped progrevaemost working environment, in particular the use of water, hydrogen peroxide and thermite instantly peregrevaetsya rods for instant explosive overheating water emulsion, whose expansion in the range of 0.5*103-0.9*103time allows you to create explosive steam-wave for the destruction of the monolith downhole parts and jumpers between wells and between straight and curved workings. First destroy the jumper in the upper svodoobrazuyuschih part passable tunnel at a distance from the vault is about 1/3 of the diameter (height) of the tunnel. Then destroy the jumper side of the tunnel from both sides; then consistently destroy the Central jumpers and at the base of the tunnel, formed by the fracture fragments, parts of the array, the sludge is separated from the bottom with the gross impact of the current business environment and remove the plate conveyor from the bottom and from the trunk passable tunnel. As such the working environment using the specified peregrevaetsya mixture enclosed in a flexible elongated tubular elements placed in the hole part formed in the cavities after the destruction of the bridges, as reflected above, using superheated liquid and gaseous phases produced from energy-related materials (water, hydrogen peroxide, thermite rods with tocaptain elements: 3050 and 350500).

To test the effectiveness of this method was selected area of the tunnel in granite massif. When the diameter of the tunnel DTH=5.0 m were completed well dck=120-135 mm l=2100 mm along the axis of the tunnel and the "Daisy" around this leader well at a distance of 320-340 mm (between the walls forming the lintel of this thickness); then, taking into account the cross-sectional area F tunnel were completed direct production at the sides with the width of the slit 92-100 mm, were also passed the last curve of the arch of the tunnel with a radius of curvature equal to R, 0.5 R, 0.3 R and 0.1 R width of cracks 92-110 mm. the destruction of the bridges was carried out taking into account the strength of the jumpers on the compression static bending load and a split from area code passable tunnel using a pulsed-explosive pressure of the hot gas and gas-vapor medium formed under pressure P=500-700 kg/cm with temperature t=300-400C in cavities in elastic (elastic pliable elements. After the destruction of the bridges on the sides, center and foot tunnel all parts of rocks, debris and sludge are separated from the bottom using a similar explosive pressure of the hot environment, choosing P=50-200 kg/cm2at t=200-250C; then destroyed the rock rolls back out of the barrel passable generation and repeat the cycle of work on the operations set forth above.

1. The method of drilling a tunnel in the rocks, characterized by the fact that the destruction of the rocks are fluid working medium, forming a linear formulation for the normal contour of the tunnel, also held separate horizontal or slanted wells with downhole end of the tunnel, between these wells form a curved and straight production in different directions square face, a pulse of power effect of cavities traversed wells and mines destroy the monolith downhole portion passable tunnel, parts, debris and sludge destroyed rock is separated from the bottom force fluid working environment and removed from the barrel passable tunnel.

2. The method according to claim 1, characterized by the fact that develop along the contour of the tunnel to form a curvilinear variable radius of curvature and cross-section.

3. The method according to claim 1, characterized in that as the working agent for the rock fracture using compressed gas and steam environment.

4. The method according to claim 1 or 3, characterized in that as a working agent use overheated liquid and gaseous phases of energy-related materials.

5. The method according to claim 1, characterized in that as sources operating agent for the destruction of the breed is used elastic elongated tubular elements, equipped progrevaemost working environment.

6. The method according to claim 1, characterized in that for generating the working agent applied to the face using multimodal jet apparatus.



 

Same patents:

FIELD: mining.

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FIELD: mining.

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FIELD: mining.

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

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EFFECT: increasing rock mass destruction efficiency using cross cutters.

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FIELD: building, particularly underground structures erected in difficult mining and geological conditions, namely in soft watered ground bedded under tunnel scoop and forming tunnel base.

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EFFECT: lower costs, higher reliability and durability.

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EFFECT: higher reliability and durability, lower costs.

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SUBSTANCE: method includes continuous feeding of electric power having appropriate frequency and voltage to consumers due to maintenance operations, and also launching new areas of network into operation, while at least one of constructed network areas is driven in soil or in body of existing embankment by micro-tunneling by means of serial pressing in soil with concurrent feeding of special solution of at least two hollow concrete sections, connected to each other and to network with pressing, each section being made with open end portions, one of which is made on outer side with open circular groove at end portion, wherein metallic ring is mounted, projecting behind end piece, having thickness no greater than groove depth, hollow of which together with inner hollow of end portion of section forms shelf-like cone, and other end portion of section is made stepped and narrowing towards end with forming of bushing portion with one shelf for ring of adjacent section cone and no less, than with one shelf for ring compacting insert of soft pressurizing gas and water impermeable material, tightly clinging by one side to shelf surface, and by other side - to inner surface of ring, while shelves of bushing portion are made within limits of outward-directed half of thickness of section wall. After pressing through all sections of reconstructed network portion, free ends of end sections are attached to existing network.

EFFECT: lower laboriousness, lower costs, higher reliability and durability.

8 cl, 16 dwg

Tunnel // 2251610

FIELD: building, particularly underground structures built under difficult mining and geological conditions, namely in presence of soft watered grounds at tunnel base.

SUBSTANCE: tunnel comprises prefabricated lining including hollow metal members driven in ground and forming a screen, load-bearing frames and grouting concrete. Metal members are joined by means of locking means. At least some metal members driven in ground have constant outer diameters. At least part of above metal members are composed of sections having different lengths. Lengths of the metal members decrease in direction opposite to the driving direction.

EFFECT: increased reliability and operational safety due to prevention of original ground surface settlement during tunnel building and operation; prevention of ground settlement during tunnel building under traffic road without traffic interruption, reduced time of tunnel building, labor and power inputs, material consumption due to optimal material distribution along driven member in correspondence with loading of its sections.

21 cl, 12 dwg

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