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CN-116877098-B - Horizontal full-convolution casing jacking equipment and construction method

CN116877098BCN 116877098 BCN116877098 BCN 116877098BCN-116877098-B

Abstract

A horizontal full-convolution casing jacking device and a construction method relate to the technical field of tunnel construction equipment. The invention discloses a rotary propelling device which comprises a main frame and a rotary propelling device, wherein the rotary propelling device comprises a cutting unit and a transition sleeve, the main frame is of a frame structure and comprises four groups of upright posts in the z direction, wherein the four groups of upright posts are formed by coaxially connecting cylinder sleeves of an upper supporting cylinder and a bottom supporting cylinder, a bottom plate is arranged at the bottom, a top plate is arranged at the top, a front supporting cylinder is arranged on the surface of each upright post of the main frame, which faces the excavation direction of a connecting channel, and a rear supporting cylinder is arranged on the back surface of the main frame.

Inventors

  • CHEN XUEHUA

Assignees

  • 广州金土岩土工程技术有限公司

Dates

Publication Date
20260505
Application Date
20230803

Claims (8)

  1. 1. A horizontal full-convolution casing jacking device comprises a main frame (2) and a convolution propulsion device (4), wherein the convolution propulsion device (4) comprises a cutting unit and a transition sleeve (441); the novel hydraulic pressure type hydraulic pressure control system is characterized in that the main frame (2) is of a frame structure and comprises four groups of upright posts in the z direction, wherein the four groups of upright posts are formed by coaxially connecting cylinder sleeves of an upper supporting cylinder (11) and a bottom supporting cylinder (51), a bottom plate (21) arranged at the bottom and a top plate (22) arranged at the top, a front supporting cylinder (31) is arranged on the surface of each upright post of the main frame (2) facing the excavation direction of a connecting channel (III), and a rear supporting cylinder (61) is arranged on the back surface of the main frame (2); The upper support cylinder (11) is connected with an upper support (1) with a inferior arc-shaped section, a sleeve suspension guide rail (12) is arranged at the bottom of the upper support (1), a bottom support (5) is connected with a bottom support cylinder (51), a rear support (6) is connected with a rear support (61), a front support (3) is connected with a front support cylinder (31), a space larger than the cross section outline of a connecting channel (III) is formed in the middle of the front support (3), the upper support (1), the bottom support (5), the rear support (6) and the front support (3) are propped up and then are propped up and connected with the inner surface of a main tunnel (I), a y-direction guide rail (211) and an X-direction pipe conveying rail (212) are arranged on a bottom plate (21) and a top plate (22) of the main frame (2), and a position to be conveyed (2120) is arranged on the X-direction pipe conveying rail (212); The rotary propulsion device (4) further comprises a propulsion frame (41), a driving device (42), a propulsion cylinder transposition bearing port (43), a large gear ring (44), a pinion (47) and a propulsion cylinder (8), wherein the propulsion frame (41) is in a vertical plate shape, a middle hole is formed in each of four corners of the propulsion frame (41), corner guide surfaces (46) are respectively arranged, the corner guide surfaces (46) are in sliding connection with the y guide rails (211), the large gear ring (44) is movably connected to the front surface of the propulsion frame (41) through a large gear ring slewing bearing (45), the driving device (42) comprises at least two groups of driving motors, a speed reducer and the pinion (47), the pinion (47) is meshed with the large gear ring (44), the driving motors and the speed reducer are fixed on the propulsion frame (41) and drive the pinion (47) to synchronously rotate, the propulsion cylinder (8) is arranged between the rear support (6) and the propulsion frame (41), and the propulsion cylinder (41) can reciprocate, and the propulsion cylinder (41) is connected with the propulsion cylinder (43) through the transposition bearing port (81); The middle part of the outer surface of a cylinder barrel (81) of the propulsion oil cylinder (8) is provided with a middle groove (811), the front part of the cylinder barrel is provided with a front groove (812), the propulsion oil cylinder transposition bearing port (43) is provided with a sliding hole penetrating through the propulsion frame (41), the opening part of the propulsion oil cylinder transposition bearing port (43) towards the rear support (6) is provided with a slot (431), and the connection between the propulsion frame (41) and the propulsion oil cylinder (8) is realized after the insertion plate is inserted into the slot (431).
  2. 2. A horizontal full-convolution jacking device according to claim 1, characterized in that an X-shaped sleeve support structure (23) is provided at the front edge of the main frame (2) facing the direction of the connecting channel (III) for supporting the sleeve.
  3. 3. The horizontal full-convolution sleeve jacking equipment according to claim 1, wherein a sealing plate is arranged at the edge of the corresponding connecting channel (III), a soil-surging-prevention rotary supporting disc (7) is arranged on the outer surface of the sealing plate, a supporting plate is further arranged at the rear part of the soil-surging-prevention rotary supporting disc (7), and four soil-surging-prevention supporting cylinders (71) distributed in a cross manner are arranged between the supporting plate and the rear support (6).
  4. 4. A horizontal full-convolution casing jacking device according to claim 3, characterized in that four said earth-surging prevention support cylinders (71) are arranged in a cross, said cross being deflected 15-20 ° with respect to the z-axis, wherein the arrangement radius of the earth-surging prevention support cylinder (71) at the most distal end is 1-1.5 times the arrangement radius of the other three cylinders.
  5. 5. The horizontal full-circle casing jacking device of claim 3, wherein, A rear support oil cylinder connecting position (62) which is matched with the rear support oil cylinder (61) in position is arranged on the rear support (6) and is used for connecting a piston rod end of the rear support oil cylinder connecting position (62); A driving device accommodating groove (63) which is matched with the driving device (42) in position is also formed in the rear support (6) and is used for accommodating a motor or a motor of the driving device (42); A propulsion oil cylinder setting bit (64) which is matched with the propulsion oil cylinder (8) in position is also arranged on the rear support (6) and is used for bearing the outer end of a piston rod of the propulsion oil cylinder (8); And a soil-surge-preventing supporting oil cylinder setting position (65) which is matched with the position of the soil-surge-preventing supporting oil cylinder (71) is also arranged on the rear support (6) and is used for fixing the cylinder body of the soil-surge-preventing supporting oil cylinder (71).
  6. 6. The horizontal full-circle jacking device according to claim 1, wherein the main frame (2) of the frame structure is provided with a main frame lower part (201) and a main frame upper part (202), the main frame lower part (201) comprises eight bottom support cylinders (51) fixedly and vertically connected to four corners of the bottom plate (21), a moving piston rod of the bottom support cylinders (51) faces in a lower direction, the main frame upper part (202) comprises eight upper support cylinders (11) fixedly and vertically connected to four corners of the top plate (22), and a moving piston rod of the upper support cylinders (11) faces in an upper direction; The bottom of the upper supporting oil cylinder (11) of the upper part (202) of the main frame is fixedly connected with the top of the bottom supporting oil cylinder (51) of the lower part (201) of the main frame through a connecting plate.
  7. 7. The construction method of the horizontal full-circle casing jacking equipment according to claim 1, comprising the following steps: 1) Running the whole equipment to the excavation position of a connecting channel (III) in a main tunnel (I); 2) The upper, bottom, front and rear supports of the adjusting device ensure that the axis of a driving mechanism of a cutting unit in the rotary propulsion device is coaxial with a connecting channel (III); 3) Simultaneously, the cutting unit makes 360-degree rotary rotation movement under the action of a driving mechanism through a first-stage connecting tube and/or a connecting tube; 4) When the rotary propulsion device reaches the propulsion stroke, the machine is stopped, the first-stage connecting tube is detached from the transition sleeve, and the rotary propulsion device is retracted to the initial position, at the moment, the cutting unit and the first-stage connecting tube are embedded and stay in the soil pre-excavated by the connecting channel (III); 5) Feeding the secondary splicing sleeve from the side between the tail end of the primary splicing sleeve and the transition sleeve, and connecting the front end of the secondary splicing sleeve with the tail end of the primary splicing sleeve and the rear end of the secondary splicing sleeve with the transition sleeve; 6) Cycling steps 1) -5); Characterized in that the step 3) has two-stage steps, In the primary stage, a middle groove (811) on a cylinder barrel (81) of a propulsion cylinder (8) is connected with a slot (431) of a propulsion cylinder transposition bearing port (43) on a propulsion frame (41) through a plugboard, and the propulsion cylinder (8) works to a full stroke; then, the machine is stopped, the plugboard is removed, the propulsion oil cylinder (8) is retracted and reset, a front groove (812) on a cylinder barrel (81) of the propulsion oil cylinder (8) is connected with a slot (431) of a propulsion oil cylinder transposition bearing port (43) on the propulsion frame (41) through the plugboard, and the machine is started, and the propulsion oil cylinder (8) is operated to a full stroke for the second time.
  8. 8. The construction method of the horizontal full-circle casing jacking equipment according to claim 7, wherein in the step 3), after the cutting unit cuts the wall of the main tunnel (I), the port of the connecting channel (III) is formed, and the soil body in the main tunnel is sealed and protected based on the cutting of the separated circular tile-shaped pipe wall fragments; The method specifically comprises the steps of attaching a sealing plate and a propping plate to the front end of a residual duct piece, arranging a soil-surge-preventing rotary supporting disc (7) between the sealing plate and the propping plate, and propping the propping plate by a soil-surge-preventing supporting oil cylinder (71).

Description

Horizontal full-convolution casing jacking equipment and construction method Technical Field The invention relates to the technical field of tunnel construction equipment, in particular to improvement of special construction equipment and a construction method for excavating connecting channels between parallel tunnels. Background The subway communication channel is a transverse channel excavated at a certain distance between two subway shield tunnels, and is used as a life channel for safe evacuation and emergency rescue and also takes account of water collection and drainage disaster reduction of the tunnels. In recent years, with the vigorous development of underground traffic in China, a large number of advanced construction methods and construction equipment have been developed around the construction of underground tunnel bodies and communication channel construction. Such as CN113669075A, communication channel construction equipment, communication channel construction system, CN 113622929A, segment breaking device, communication channel construction system and method. The power device in the prior art is arranged at the front end and has the defects that firstly, when a tunnel wall is broken and excavated, the full-section broken and excavated is carried out on the tunnel wall of concrete, the cutting amount is large, the excavation difficulty is extremely high, and secondly, when the position of a connecting channel and the excavation angle are set in the tunnel, the position is set to be more difficult, and high-precision construction is difficult to realize. Therefore, the present inventors have made a related development around this problem, and have obtained preliminary development results, such as "CN 114876473A, a subway communication channel tunneling apparatus based on horizontal full rotation, and a construction method. The application provides an application idea of annular cutting tunneling under the condition of keeping central soil aiming at the current situations of large difficulty in breaking segment of adjacent inner surfaces of a pair of parallel main tunnels, complex process and the like. The rotary power driving mechanism and the propulsion system are arranged at the rear, and the cutting mechanism is annularly arranged along the sleeve wall, so that the penetration force of the cut rock and soil body is greatly reduced. Under the condition that the machine head pipe and the steel pipe joint form a retaining wall, central soil is reserved, after annular cutting tunneling is completed, soil in the steel pipe joint (sleeve) is taken out through peripheral equipment, and the problems that when a traditional mechanical method urban subway communication channel is constructed, space is narrow, equipment is difficult to arrange, the damage to a main tunnel is large due to a large full-section cutting range, the contact between a receiving machine head and the reverse cambered surface of a main tunnel segment is easy to deviate in gesture, the receiving gesture is uncontrollable, quality is difficult to guarantee, equipment manufacturing cost is high and the like are solved. The whole operation process of the patent achievement comprises the steps that the cutting unit circularly cuts and digs the inner wall of the originating tunnel, then the annular cutting unit grinds and cuts the inner wall of the originating tunnel, digs the inner wall of the originating tunnel, then cuts and digs the inner wall of the originating tunnel, finally circularly cuts the duct piece from the outer side wall of the receiving tunnel, and enters the receiving main tunnel until the tunnel is penetrated. However, in the whole operation process, the diameter of the planned connection channel is larger, so that the diameter of the annular cutting is larger, the tunnel wall is generally of a reinforced concrete structure, the required torque of the cutting mechanism is larger when the cutting mechanism starts and receives cutting at two ends, and the reactive torque acting on the whole equipment is also particularly large. The reactive torque formed can lead to unstable equipment arrangement, and the equipment can cause damaging influence on a main tunnel structure of an excavation point and also influence the excavation precision of a communication channel under the condition that the equipment is unstable. In addition, in the patent achievement, the whole length of the connecting channel is excavated through the action cycle of 'progressive-rollback-takeover', the progressive (one-time continuous propelling distance) length only depends on the design stroke of the propelling cylinders, but the sizes of the propelling cylinders and the feeding pipes which are linearly arranged in the direction of the excavating axis (y direction) are limited in the radially narrow space of the main tunnel, and the progressive efficiency is difficult to improve. Disclosure of Invention Aiming at the technical problems, the horiz