DE112020006662T5 - Tunneling machine and construction method for a hard rock transverse tunnel - Google Patents

Abstract

The present invention discloses a boring machine and a construction method for a hard rock cross channel, thereby solving the problems of inflexible use and low working efficiency of the cross channel excavation equipment in the prior art. The present invention comprises a split drill and a propulsion device, wherein the output end of the split drill is detachably provided with a drill pipe, the propulsion device comprising a propulsion main body so that the drill pipe passes through the propulsion main body, whereby the propulsion main body cooperates with the drill pipe. In the present invention, the split drilling rig is first used to bore the tunnel, and then the tunneling device performs tunneling and excavation with the cutter head for the tunnel based on boring, thereby reducing the vibration stress during tunneling and improving tunneling efficiency . The split drill is used in conjunction with the propulsion device. The propulsion main body takes the drill pipe placed in the borehole as a fulcrum, and propels along the drill pipe to realize the efficient excavation of the first drilling and then the digging.

Description

field of invention

The present invention relates to the technical field of connecting sewer excavation, particularly to a boring machine and a construction method for a hard rock transverse sewer.

State of the art

When constructing a double-track mountain railway tunnel, it is necessary to construct a cross-connecting duct at regular intervals (about 350 meters) between two parallel tunnels for maintenance of the tunnel or air circulation when entering and exiting the tunnel. The main line of the railway tunnel is usually built with a hard rock tunnel boring machine. The distance between the two parallel tunnels is small (20 m to 30 m). The transverse channel axis and the main hole axis are at an angle of 45° in the horizontal plane. Cross-channels are generally excavated by drilling and blasting techniques. Drilling and blasting excavation involves the risk of detonations and large vibration fluctuations. The construction method of the connection duct in the prior art, such as the construction method and the connection duct of a connection duct sign with the application number CN201810537259.8 , uses a shield construction, which is suitable for the construction of a longer connection channel, and the excavation is not flexible. Therefore, in order to realize the short-distance excavation of the hard rock cross-link channel, it is necessary to invent high-efficiency excavation equipment for the mechanical excavation.

object of the invention

In view of the shortcomings of the prior art, the present invention provides a boring machine and a construction method for a hard rock cross channel, thereby solving the problems of inflexible use and low working efficiency of the prior art cross channel excavation equipment.

The technical solution of the present invention is implemented as follows: a drilling propulsion device comprising a split drill and a propulsion device, the output end of the split drill being detachably provided with a drill pipe, the propulsion device comprising a propulsion main body such that the drill pipe passes through the propulsion main body, whereby the propellant main body cooperates with the drill string. It is further envisaged that the split drilling apparatus comprises a hydraulic motor, the hydraulic motor being arranged on the base via a sliding mechanism, the output end of the hydraulic motor being detachably provided with a drill rod, the base being provided with a guide mechanism, the drill rod being attached to the guide mechanism is equivalent to.

It is further provided that the guide mechanism comprises a guide seat, the guide seat being provided with a pivot support, the drill string passing through the pivot support and cooperating with the pivot support.

Furthermore, it is provided that the slide mechanism comprises a slide table and a slide rail arranged on the base, the slide table being slidably connected to the slide rail via a drive element.

It is also provided that the drill string comprises a drill rod and a drill bit, the two adjacent drill rods being plugged together.

It is further provided that the propulsion main body comprises a shield body, a cutting head and a stepping mechanism, one end of the shield body being provided with a cutting head and the other end being provided with a stepping mechanism, the shield body being provided with a belt conveyor for discharging the slag, the cutting head being connected to a prime mover located in the shield body.

It is further provided that the center of the cutter head is provided with a central hole for the drill string to pass through, the cutter head being provided with a slag inlet, the slag inlet corresponding to the belt conveyor.

Further, the shield body is provided to include an upper shield and a lower shield, the upper shield and the lower shield being semi-circular structures, the upper shield being connected to the lower shield by a lifting oil cylinder.

It is also provided that the lower shield is provided with a clamping device for pressing the upper shield.

It is further provided that the stepping mechanism comprises an axial telescopic torsion frame and a radial telescopic brake caliper for clamping the drill string, one end of the axial telescopic torsion frame having the shield body and the other end connected to a telescopic radial brake caliper, the telescopic radial brake caliper being perpendicular to the telescopic axial torsion frame.

It is further provided that the underside of the belt conveyor is provided with an impeller, the impeller being in contact with the drill string.

A boring machine for a hard rock cross channel comprising the above boring machine and also comprising a mobile truck, the boring machine being placed on a mobile truck, the mobile truck being detachably provided with a crane.

Furthermore, it is provided that the underside of the mobile car is symmetrically provided with a telescopic steel wheel and a telescopic track, the telescopic track being arranged inclined on both sides of the telescopic steel wheel.

• S1: Ein mobiler Wagen mit dem geteilten Bohrgerät und der Vortriebsvorrichtung bewegt sich entlang des Haupttunnels zu einer bestimmten Position;
• S2: Der Hydraulikmotor des geteilten Bohrgeräts treibt das Bohrgestänge an, um die Höhlenwand zwischen den zwei Haupttunneln zu bohren;
• S3: Wenn das geteilte Bohrgerät um die Länge eines Bohrgestänges vorwärts bohrt, wird die Verbindung zwischen dem Hydraulikmotor und dem Bohrgestänge gelöst. Der Hydraulikmotor bewegt sich rückwärts, um einen Abstand einer Bohrstange freizugeben. Dann wird ein neues Bohrstange installiert. Die neue Bohrstange ist mit der vorherigen Bohrstange zusammengesteckt. Der Hydraulikmotor bohrt weiter durch die neue Bohrstange und die vorherige Bohrstange;
• S4: Die Schritte S2-S3 werden wiederholt, bis die Höhlenwand zwischen den beiden Haupttunneln gebohrt wird;
• S5: Die Vortriebsvorrichtung wird auf der Bohrstange installiert, und der radiale Teleskopbremssattel der Vortriebsmaschine klemmt die Bohrstange;
• S6: Der Schneidkopf wird zur Drehung angetrieben. Zum Vortreiben wird der axial Teleskoptorsionsrahmen ausgefahren. Wenn der Teleskopölzylinder des axial Teleskoptorsionsrahmens den maximalen Hub erreicht, hört der Schneidkopf auf sich zu drehen. Eine Vortriebsfahrt endet;
• S7: Der radial Teleskopbremssattel wird gelöst und der axial Teleskoptorsionsrahmen wird eingefahren. Der radiale Teleskopbremssattel fährt aus, um die Bohrstange zu klemmen, und der Schneidkopf dreht sich. Der axial Teleskoptorsionsrahmen streckt sich, um den nächsten Vortriebsvorgang zu beginnen;
• S8: Die Schritte S6-S7 werden wiederholt, bis die Höhlenwand zwischen den beiden Haupttunneln gegraben wird, um einen Verbindungskanal zu bilden;
• S9: Für die Vortriebsvorrichtung, die die Vortriebsarbeiten abgeschlossen hat, wird die Vortriebsvorrichtung aus dem Verbindungskanal herausgezogen, indem die Bohrstange einzeln entfernt wird, um den Aushubvorgang abzuschließen.

Construction method for a hard rock transverse channel, comprising the following steps,

• S1: A mobile truck with the split drilling rig and the propulsion device moves along the main tunnel to a certain position;
• S2: The split drill rig's hydraulic motor drives the drill pipe to drill the cave wall between the two main tunnels;
• S3: When the split drill drills forward by the length of a drill string, the connection between the hydraulic motor and the drill string is released. The hydraulic motor moves backward to clear a clearance of a boring bar. Then a new boring bar is installed. The new boring bar is mated with the previous boring bar. The hydraulic motor continues to drill through the new drill rod and the previous drill rod;
• S4: Steps S2-S3 are repeated until the cave wall between the two main tunnels is drilled;
• S5: The tunneling device is installed on the drill rod, and the radial telescopic brake caliper of the tunnel boring machine clamps the drill rod;
• S6: The cutting head is driven to rotate. The axial telescopic torsion frame is extended for propulsion. When the telescopic oil cylinder of the axial telescopic torsion frame reaches the maximum stroke, the cutting head stops rotating. A heading run ends;
• S7: The radial telescopic caliper is released and the axial telescopic torsion frame is retracted. The telescopic radial brake caliper extends to clamp the boring bar and the cutting head rotates. The axially telescopic torsion frame stretches to begin the next tunneling operation;
• S8: Steps S6-S7 are repeated until the cave wall is dug between the two main tunnels to form a connecting channel;
• S9: For the mole that has completed the boring work, the mole is extracted from the connecting passage by removing the drill rod one by one to complete the excavation work.

In the present invention, the split drilling rig is first used to bore the tunnel, and then the tunneling device performs tunneling and excavation with the cutter head for the tunnel based on boring, thereby reducing the vibration stress during tunneling and improving tunneling efficiency . The split drill is used in conjunction with the propulsion device. The propulsion main body takes the drill pipe placed in the borehole as a fulcrum, and propels along the drill pipe to realize the efficient excavation of the first drilling and then the digging. The mobile carriage of the hard rock transverse tunnel boring machine enables a longer distance by running steel wheels, which are mainly used for the movement between different stations. When it moves to the specified work surface, the left and right running tracks extend and the left and right steel wheels retract. The running track device can withstand large loads to prevent the platform from turning over during construction, so that platform movement and platform attitude control in short distances and flexible movement can also be realized. The whole mechanism according to the present invention is compact, the mutual positions are adjustable, and the propulsion mode is flexible, which is suitable for short-distance connecting sewer excavation, which is a great innovation in transverse tunnel excavation.

character list

• 1 ist ein schematisches Diagramm einer Position einer Gesamtanordnung gemäß der vorliegenden Erfindung.
• 2 ist ein schematisches Diagramm der Struktur des geteilten Bohrgeräts gemäß der vorliegenden Erfindung.
• 3 ist ein schematisches Diagramm der Struktur der Vortriebsvorrichtung gemäß der vorliegenden Erfindung.
• 4 ist ein schematisches Diagramm der Struktur des mobilen Wagens gemäß der vorliegenden Erfindung.
• 5 ist ein schematisches Diagramm des Hebezustands des Krans gemäß der vorliegenden Erfindung.
• 6 ist ein schematisches Diagramm des Bohrzustands des geteilten Bohrgeräts.
• 7 ist ein schematisches Diagramm des Bohrdurchgangszustands des geteilten Bohrgeräts.
• 8 ist ein schematisches Diagramm des vorbereiteten Vortriebszustands der Vortriebsvorrichtung.
• 9 ist ein schematisches Diagramm des Vortriebszustands der Vortriebsvorrichtung.
• 10 ist ein schematisches Diagramm des Vortriebsdurchgangszustands der Vortriebsvorrichtung.
• 11 ist ein schematisches Diagramm des Rückziehzustands der Vortriebsvorrichtung.
• 12 ist ein schematisches Diagramm des Einfahrtszustands der Vortriebsvorrichtung in den Haupttunnel.

In order to more clearly describe the embodiments of the present invention, the drawings included in the description of the embodi examples to be used are briefly described below. Obviously, the drawings in the following description are only some embodiments of the present invention. Without creative work, the ordinary professional can also get other drawings based on these drawings.

• 1 Fig. 12 is a schematic diagram of one position of an overall assembly according to the present invention.
• 2 Fig. 12 is a schematic diagram of the structure of the split drilling rig according to the present invention.
• 3 Fig. 12 is a schematic diagram of the structure of the propulsion device according to the present invention.
• 4 12 is a schematic diagram of the structure of the mobile truck according to the present invention.
• 5 Fig. 12 is a schematic diagram of the hoisting state of the crane according to the present invention.
• 6 Fig. 12 is a schematic diagram of the drilling state of the split drilling rig.
• 7 Fig. 12 is a schematic diagram of the drill pass state of the split drill.
• 8th Fig. 12 is a schematic diagram of the prepared propulsion state of the propulsion device.
• 9 Fig. 12 is a schematic diagram of the propulsion state of the propulsion device.
• 10 Fig. 12 is a schematic diagram of the propulsion passage state of the propulsion device.
• 11 Fig. 12 is a schematic diagram of the state of retraction of the propulsion device.
• 12 Fig. 12 is a schematic diagram of the entrance state of the propulsion apparatus into the main tunnel.

Description of the preferred embodiments

The technical solution in the embodiments of the present invention will be clearly and fully described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments and not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained without creative work by a person of ordinary skill in the art fall within the scope of the present invention.

Boring propulsion device comprising a split boring device 1 and a boring device 2, wherein the split boring device 1 is first used for boring the tunnel, the boring device 2 then carries out the boring and the excavation with the cutter head for the tunnel on the basis of the boring, wherein the The output end of the split drill 1 is detachably provided with a drill string 104, the drill string 104 comprising a drill rod 104-1 and a drill bit 104-2, the drill rod 104-1 being detachably connected to the drill bit 104-2, as in embodiment 1 in 1 and 2 shown. During the drilling process, the split drill rig pre-drills the length of a drill rod and then replaces it with a new drill rod. The two adjacent drill rods 104-1 are plugged together. The two or more drill rods fitted together form a coaxial rod body which rotates synchronously under the action of the split drill rig to further bore the tunnel. The propulsion apparatus 2 includes a propulsion main body such that the drill pipe 104 passes through the propulsion main body, whereby the propulsion main body cooperates with the drill pipe 104 . The propulsion main body takes the drill pipe placed in the borehole as a fulcrum, and propels along the drill pipe to realize the efficient excavation of the first drilling and then the digging.

It is further provided that the split drilling device 1 comprises a hydraulic motor 101, the hydraulic motor 101 being arranged on the base 103 via a sliding mechanism 102, the sliding mechanism 102 preferably comprising a sliding table 102-1 and a sliding rail 102-2 mounted on the base 103, wherein the slide table 102-1 is slidably connected to the slide rail 102-2 via a drive member 102-3, which drive member may be a hydraulic oil cylinder, so that the hydraulic motor is driven under the action of the hydraulic oil cylinder to move along the to move the base, thereby achieving continuous forward drilling of the drill string, the output end of the hydraulic motor 101 being detachably provided with a drill string 104, the base 103 being provided with a guide mechanism 105, the drill string 104 passing through the guide mechanism 105 and relative to the Guide mechanism can slide, the guide m mechanism plays a leading role, so that the drill string is drilled in a certain direction, preferably the guide mechanism 105 comprises a guide seat 105-1, the guide seat 105-1 being fixed to the base, the guide seat 105-1 being provided with a pivot support 105-2, the drill string 104 passing through the pivot support 105-2 and slidable with the Pivot support 105-2 is connected, the pivot support being used to support the drill rod, which does not affect the rotation of the drill rod.

Split drill rigs can excavate pilot holes (boreholes). The axis of the guide hole coincides with the axis of the transverse channel. When drilling, the hydraulic motor drives the drill rod and drill bit to rotate. The sliding mechanism drives the hydraulic motor, drill rod and drill bit to move forward (in the direction of advance), and the drill bit drills in the cave wall. When the hydraulic motor advances the length of a drill rod, the connection between the hydraulic motor and the drill rod is released. The slide mechanism drives the hydraulic motor to move backward (in the opposite direction of advance), thereby freeing the clearance of a drill rod. A new drill rod is installed and connected to the previous drill rod to continue drilling. Drilling propulsion apparatus, wherein the propulsion main body comprises a shield body 201, a cutter head 202 and a stepping mechanism 203, one end of the shield body 201 being provided with a cutting head 202 and the other end being provided with a stepping mechanism 203, the stepping mechanism providing assistance and power for the forward step of the propulsion main body, the shield body 201 is provided with a belt conveyor 204 for discharging the slag, the belt conveyor may be a telescopic belt conveyor for transporting slags, the underside of the belt conveyor 204 is provided with an impeller, the impeller being in contact with the drill string 104, with the cutter head 202 being connected to a prime mover 205 located in the shield body 201, the prime mover providing power for rotation of the cutter head, as in embodiment 3 in 2 shown.

Preferably, the center of the cutter head 202 is provided with a central hole 202-1 for the drill string 104 to pass through, the cutter head 202 being provided with a slag inlet 202-2, the slag inlet 202-2 corresponding to the belt conveyor 204. That is, the central portion of the cutter head is a hollow structure suitable for the passage of the drill string. A hob is installed on the cutter head, which has the function of breaking rock, so the slag chips peeled off by the hob fall to the bottom of the transverse channel under the action of gravity. A slag inlet is arranged around the cutter head so that the slag chips scraped off by the hob onto the bottom of the tunnel can be received into the cutter head and pushed onto the belt conveyor together with the cutter head structure from the top of the cutter head and transported backwards by the belt conveyor. With the forward propulsion of the cutting head, the number or length of the belt conveyors can also be increased, facilitating the efficient transport of slag.

It is further provided that the shield body 201 includes an upper shield 201-1 and a lower shield 201-2, wherein the upper shield 201-1 and the lower shield 201-2 are semi-circular structures, the upper shield 201-1 by a Lifting oil cylinder 201-3 is connected to the lower shield 202-2, the lower shield 202-2 being provided with a clamping device 201-4 for pressing the upper shield 201-1. The lower shield has a semicircular structure and is rigidly connected to the main drive by bolts to support the weight of the entire tunneling machine, is in contact with the bottom of the transverse channel during tunnelling, and overcomes the friction with the cave wall under the thrust of the tunneling machine. The upper shield is also a semi-circular structure, so the upper shield is connected to the lower shield through the lifting oil cylinder. The extension and retraction of the lifting oil cylinder can realize the up and down movement of the upper blade relative to the lower blade. During tunnelling, the upper shield is in contact with the top of the tunnel, but the holding force should be controlled within a certain range. The upper shield is clamped by the upper shield clamping device, thus preventing the friction between the upper shield and the cave wall from being too large and the upper support of the upper shield failing, thereby improving the construction safety factor.

It is further provided that the stepping mechanism 203 comprises an axial telescopic torsion frame 203-1 and a radial telescopic brake caliper 203-2 for clamping the drill rod 104, the axial telescopic torsion frame 203-1 being connected to the shield body by an axially arranged telescopic oil cylinder, whereby the and extending the tunnel axis, with one end of the axial telescopic torsion frame 203-1 connected to the shield body 201, and the other end connected to a radial telescopic caliper 203-2, the radial telescopic caliper connected by a radially arranged telescopic oil cylinder to the axial telescopic torsion frame is connected, where the radial telescopic brake caliper 203-2 is arranged perpendicular to the axial telescopic torsion frame 203-1. The telescopic radial brake caliper can hold the drill rod firmly. After fixing the drill rod, the relative movement of the mole and the drill rod can be realized by controlling the extension and retraction of the axial telescopic torsion frame. The reaction force of the thrust of the cutter head and the reverse torque of the rotation of the cutter head during advance can also be transmitted to the boring bar.

The other structures are the same as Embodiment 1. A boring machine for a cross tunnel of hard rock comprising the boring machine according to Embodiment 2 and also comprising a mobile truck 3, wherein the boring machine is placed on a mobile truck 3, the mobile truck 3 being detachable is provided with a crane 4, the crane being arranged between the split drilling rig 1 and the propelling device 2 to provide necessary lifting work for drilling work and propelling work, as in embodiment 3 in 4 and 5 shown. It is preferably provided that the bottom of the mobile car 3 is symmetrically provided with a telescopic steel wheel 301 and a telescopic running track 302, with the telescopic running track 302 being arranged inclined on both sides of the telescopic steel wheel 301, with two sets of running devices with a track and a steel wheel on the Installed at the bottom of the mobile platform, the two sets of running devices have the functions of moving in and out, the steel wheel can run on the track laid in the tunnel, and the track can run directly on the cave wall. The mobile carriage allows a longer distance by running steel wheels, which are mainly used for movement between different stations. When it moves to the specified work surface, the left and right running tracks extend and the left and right steel wheels retract. The running track device can withstand large loads to prevent the platform from turning over during construction, so that short-distance platform movement and platform attitude control can also be realized.

• S1: Ein mobiler Wagen 3 mit dem geteilten Bohrgerät 1 und der Vortriebsvorrichtung 2 bewegt sich entlang des Haupttunnels zu einer bestimmten Position; Das heißt, die mobile Plattform kann die Ausrüstung, die für den Bau des Querkanals erforderlich ist, zu der spezifizierten Station transportieren und die Haltung an der spezifizierten Station einstellen, um die Anforderungen des Baus des Querkanals zu erfüllen;
• S2: Wenn sich das geteilte Bohrgerät in einer geeigneten Position befindet, treibt der Hydraulikmotor 101 des geteilten Bohrgeräts 1 das Bohrgestänge 104 an, um die Höhlenwand zwischen den zwei Haupttunneln zu bohren, wie in 6 gezeigt;
• S3: Wenn das geteilte Bohrgerät 1 um die Länge eines Bohrgestänges 104 vorwärts bohrt, wird die Verbindung zwischen dem Hydraulikmotor und dem Bohrgestänge 104 gelöst. Der Hydraulikmotor bewegt sich rückwärts, um einen Abstand einer Bohrstange freizugeben. Dann wird ein neues Bohrstange installiert. Die neue Bohrstange ist mit der vorherigen Bohrstange zusammengesteckt. Der Hydraulikmotor bohrt weiter durch die neue Bohrstange und die vorherige Bohrstange;
• S4: Die Schritte S2-S3 werden wiederholt, bis die Höhlenwand zwischen den beiden Haupttunneln gebohrt wird, wie in 7 gezeigt;
• S5: Nachdem die Bohrung abgeschlossen ist, wird die bewegliche Plattform vorwärts bewegt, so dass die Vortriebsmaschine die angegebene Station erreicht. Die Vortriebsvorrichtung 2 wird auf der Bohrstange installiert, und der radiale Teleskopbremssattel 203-2 der Vortriebsmaschine klemmt die Bohrstange. Um die Baueffizienz zu verbessern, kann eine Querkanalvortriebsvorrichtung in jedem linken und rechten Haupttunnel installiert werden, wie in 8 gezeigt;
• S6: Der Schneidkopf 202 wird zur Drehung angetrieben. Zum Vortreiben wird der axial Teleskoptorsionsrahmen 203-1 ausgefahren. Wenn der Teleskopölzylinder des axial Teleskoptorsionsrahmens 203-1 den maximalen Hub erreicht, hört der Schneidkopf auf sich zu drehen. Eine Vortriebsfahrt endet, wie in 9 gezeigt;
• S7: Der radial Teleskopbremssattel 203-2 wird gelöst und der axial Teleskoptorsionsrahmen 203-1 wird eingefahren. Der radiale Teleskopbremssattel 203-2 fährt aus, um die Bohrstange zu klemmen, und der Schneidkopf dreht sich. Der axial Teleskoptorsionsrahmen 203-1 streckt sich, um den nächsten Vortriebsvorgang zu beginnen;
• S8: Die Schritte S6-S7 werden wiederholt, bis die Höhlenwand zwischen den beiden Haupttunneln gegraben wird, um einen Verbindungskanal zu bilden, wie in 10 gezeigt;
• S9: Für die Vortriebsvorrichtung 2, die die Vortriebsarbeiten abgeschlossen hat, wird die Vortriebsvorrichtung 2 aus dem Verbindungskanal herausgezogen, indem die Bohrstange einzeln entfernt wird, um den Aushubvorgang abzuschließen. Das heißt, nachdem die Vortriebsvorrichtung durchdrungen ist, wird die Bohrstange zwischen den beiden Vortriebsmaschinen getrennt. Die Vortriebsmaschine wird durch die Plattform des Bohrgeräts aus dem Querkanal herausgezogen, um den gesamten Prozess abzuschließen, wie in 11 und 12 gezeigt.

Exemplary embodiment 4: construction method for a transverse channel made of hard rock according to exemplary embodiment 3, comprising the following steps,

• S1: A mobile truck 3 with the split drilling rig 1 and the propulsion device 2 moves along the main tunnel to a specified position; That is, the mobile platform can transport the equipment required for the construction of the cross channel to the specified station and adjust the posture at the specified station to meet the requirements of the construction of the cross channel;
• S2: When the split drilling rig is in an appropriate position, the hydraulic motor 101 of the split drilling rig 1 drives the drill pipe 104 to bore the cave wall between the two main tunnels as in FIG 6 shown;
• S3: When the split drill 1 drills forward by the length of a drill pipe 104, the connection between the hydraulic motor and the drill pipe 104 is released. The hydraulic motor moves backward to clear a clearance of a boring bar. Then a new boring bar is installed. The new boring bar is mated with the previous boring bar. The hydraulic motor continues to drill through the new drill rod and the previous drill rod;
• S4: Steps S2-S3 are repeated until the cave wall between the two main tunnels is drilled, as in 7 shown;
• S5: After drilling is completed, the moving platform is moved forward so that the boring machine reaches the specified station. The mole 2 is installed on the drill rod, and the radial telescopic caliper 203-2 of the mole clamps the drill rod. In order to improve construction efficiency, a cross-channel tunneling device can be installed in each left and right main tunnel, as in 8th shown;
• S6: The cutting head 202 is driven to rotate. For advancement, the axial telescopic torsion frame 203-1 is extended. When the telescopic oil cylinder of the axially telescopic torsion frame 203-1 reaches the maximum stroke, the cutting head stops rotating. A heading run ends as in 9 shown;
• S7: The radially telescopic brake caliper 203-2 is released and the axially telescopic torsion frame 203-1 is retracted. The 203-2 telescopic radial brake caliper extends to clamp the boring bar and the cutter head rotates. The axially telescopic torsion frame 203-1 stretches to begin the next tunneling operation;
• S8: Steps S6-S7 are repeated until the cave wall is dug between the two main tunnels to form a connecting channel as in 10 shown;
• S9: For the mole 2 that has completed the boring work, the mole 2 is extracted from the connecting passage by removing the drill rod one by one to complete the excavation work. That is, after the mole is penetrated, the drill rod is separated between the two mole machines. The mole is pulled out of the cross-channel through the platform of the drilling rig to complete the whole process as in 11 and 12 shown.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. All changes, equivalent substitutions, improvements, etc. within the spirit and principles of the present invention must fall within the scope of the present invention.

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• CN201810537259 [0002]

Claims (15)

Drilling propulsion device comprising a split drill (1) and a propulsion device (2), characterized in that the output end of the split drill (1) is detachably provided with a drill rod (104), the propulsion device (2) comprising a propulsion main body so that the drill string (104) extends through the main mole whereby the main mole cooperates with the drill string (104). Drilling advance device claim 1 , characterized in that the split drill (1) comprises a hydraulic motor (101), the hydraulic motor (101) being arranged on the base (103) via a sliding mechanism (102), the output end of the hydraulic motor (101) being detachably connected to a Drill pipe (104), the base (103) being provided with a guide mechanism (105), the drill pipe (104) corresponding to the guide mechanism (105). Drilling advance device claim 2 , characterized in that the guide mechanism (105) comprises a guide seat (105-1), the guide seat (105-1) being provided with a rotary support (105-2), the drill pipe (104) being supported by the rotary support (105- 2) runs and cooperates with the rotary support (105-2). Drilling advance device claim 3 , characterized in that the slide mechanism (102) comprises a slide table (102-1) and a slide rail (102-2) which is arranged on the base (103), the slide table (102-1) being connected via a drive element (102 -3) is slidably connected to the slide rail (102-2). Drilling advance device claim 4 , characterized in that the drill string (104) comprises a drill rod (104-1) and a drill bit (104-2), wherein the two adjacent drill rods (104-1) are plugged together. Drilling advance device according to one of Claims 1 until 5 , characterized in that the propulsion main body comprises a shield body (201), a cutter head (202) and a stepping mechanism (203), wherein one end of the shield body (201) is provided with a cutting head (202) and the other end with a stepping mechanism ( 203), the shield body (201) being provided with a belt conveyor (204) for discharging the slag, the cutting head (202) being connected to a prime mover (205) arranged in the shield body (201). Drilling advance device claim 6 , characterized in that the center of the cutter head (202) is provided with a central hole (202-1) for the drill string (104) to pass through, the cutter head (202) being provided with a slag inlet (202-2), the Slag inlet (202-2) corresponds to the belt conveyor (204). Drilling advance device claim 7 , characterized in that the shield body (201) comprises an upper shield (201-1) and a lower shield (201-2), the upper shield (201-1) and the lower shield (201-2) being semicircular structures wherein the upper blade (201-1) is connected to the lower blade (202-2) by a lifting oil cylinder (201-3). Drilling advance device claim 7 , characterized in that the lower shield (202-2) is provided with a clamping device (201-4) for pressing the upper shield (201-1). Drilling advance device claim 6 or 7 or 8th or 9 , characterized in that the stepping mechanism (203) comprises an axial telescopic torsion frame (203-1) and a radial telescopic brake caliper (203-2) for clamping the drill pipe (104), one end of the axial telescopic torsion frame (203-1) being connected to the shield body (201) and the other end is connected to a telescopic radial brake caliper (203-2), the telescopic radial brake caliper (203-2) being arranged perpendicularly to the telescopic axial torsion frame (203-1). Drilling advance device claim 10 , characterized in that the underside of the belt conveyor (204) is provided with an idler wheel, the idler wheel being in contact with the drill string (104). A boring machine for a hard rock transverse tunnel, comprising the boring boring device according to claim 1 claim 1 or 4 or 8th or 9 and also comprising a mobile carriage (3), characterized in that the drilling propulsion device is arranged on a mobile carriage (3). Tunneling machine for a transverse channel made of hard rock claim 12 , characterized in that the mobile carriage (3) is detachably provided with a crane (4). Tunneling machine for a transverse channel made of hard rock Claim 13 , characterized in that the underside of the mobile carriage (3) symmetrically with a telescopic steel wheel (301) and a telescopic track (302), the telescopic track (302) being inclined on both sides of the telescopic steel wheel (301). Construction method for a hard rock transverse channel Claim 14 , characterized in that the method comprises the following steps, S1: a mobile truck (3) with the split drilling device (1) and the propulsion device (2) moves along the main tunnel to a certain position; S2: The hydraulic motor (101) of the split drilling rig (1) drives the drill pipe (104) to drill the cave wall between the two main tunnels; S3: When the split drill (1) drills forward by the length of a drill pipe (104), the connection between the hydraulic motor and the drill pipe (104) is released. The hydraulic motor moves backward to clear a clearance of a boring bar. Then a new boring bar is installed. The new boring bar is mated with the previous boring bar. The hydraulic motor continues to drill through the new drill rod and the previous drill rod; S4: Steps S2-S3 are repeated until the cave wall between the two main tunnels is drilled; S5: The boring device (2) is installed on the boring bar, and the telescopic radial brake caliper (203-2) of the boring machine clamps the boring bar; S6: The cutting head (202) is driven to rotate. To advance the axial telescopic torsion frame (203-1) is extended. When the telescopic oil cylinder of the axial telescopic torsion frame (203-1) reaches the maximum stroke, the cutting head stops rotating. A heading run ends; S7: The radial telescopic brake caliper (203-2) is released and the axial telescopic torsion frame (203-1) is retracted. The telescopic radial brake caliper (203-2) extends to clamp the boring bar and the cutting head rotates. The axial telescopic torsion frame (203-1) stretches to start the next tunneling operation; S8: Steps S6-S7 are repeated until the cave wall is dug between the two main tunnels to form a connecting channel; S9: For the mole (2) that has completed the boring work, the mole (2) is extracted from the connecting passage by removing the drill rod one by one to complete the excavation work.

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