JP2016003552A - Adit excavation entrance or arrival exit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adit excavation entrance or an arrival exit in which a flap, a sealing tube or a wire brush packing abutting on an excavation machine which starts from a shaft wall, in particular, or reaches the shaft wall, and a propulsion pipe which is arranged after excavation is made to three-dimensionally and closely adhere to the inside of an excavator cutting part of the shaft wall, and can hold a cut-off function, related to the adit excavation entrance or the arrival exit.SOLUTION: In an adit excavation entrance or an arrival exit, an excavation machine starting circular recess is formed at the inside of a shaft wall in order to make an excavation machine start from the inside of the shaft wall, and to form an adit, a ring-shaped steel plate is attached to an inside edge of the excavation machine starting circular recess, a sealing tube and flaps are attached to the ring-shaped steel plate, or a wire brush packing is attached thereto, and a plurality of the oscillatory flaps are attached to the ring-shaped steel plate at the inside of a temporary sidewall in a series or in duplicate.

Description

  TECHNICAL FIELD The present invention relates to an entrance for a horizontal shaft excavation or a exit for exit, and in particular, a flap, a sealing tube, or a wire brush packing that abuts against an excavation machine that is excavated from the shaft wall or reaches the shaft wall, and a propelling pipe installed after the excavation. The present invention relates to an entrance for horizontal excavation or an exit for arrival that can be three-dimensionally adhered to the inner side of an excavation opening of a shaft wall and maintain a water stop function.

  The entrance for the horizontal pit excavation or the exit for exit is a sealing tube or wire brush that comes into contact with the excavation machine started from the shaft wall and the propulsion pipe installed after excavation even when the inclined shaft is formed with respect to the vertical shaft Since the packing is three-dimensionally adhered to the inside of the shaft opening of the shaft wall and can maintain the water stop function, the excavation machine starting from the shaft wall or reaching the shaft wall and the propulsion pipe installed after the excavation Alternatively, it is a horizontal excavation entrance or a reaching exit that can also be applied to the formation of inclined shafts.

  2. Description of the Related Art Conventionally, various ideas have been developed regarding an entrance for preventing outflow of excavated mud and groundwater from an opening in excavation by a digging machine from a cylindrical shaft or a rectangular tube shaft.

  In addition, in order to start excavation machines from shafts and shield tunnels, it is necessary to completely prevent mud and groundwater from flowing out of the wellhead. Generally, an entrance is installed at the wellhead forming part to form a water stop mechanism. In addition, a ground improvement portion is formed by injecting a chemical solution in the surrounding ground surrounding the wellhead forming portion.

  JP 2001-248385 A   JP 2002-89173 A   Japanese Patent Application Laid-Open No. 10-15482

  Japanese Patent Application Laid-Open No. 2001-248385 described above discloses an entrance packing having a structure in which a ring-shaped elastic member disposed on a peripheral portion of an opening is sandwiched between a receiving plate having an opening corresponding to a propulsion machine and a presser plate. Yes.

  Moreover, in the above-mentioned JP-A-2002-89173, it has a water stop device composed of a hollow tube made of rubber entrance packing and a rubber tube, and can be expanded by injecting fluid such as compressed air or water. As described above, there is disclosed a water stop method capable of being pressed against the outer peripheral surface of a shield machine.

  Further, in the above-mentioned Japanese Patent Laid-Open No. 10-159482, when a shield machine having a stepped portion on the outer peripheral surface provided with a first entrance and a second entrance capable of bulging / retreating inside the packing case However, a tunnel entrance structure that can prevent the outflow of underground water to a shaft and a shield method using the same are disclosed.

  However, in these cited patents, the outer peripheral edge of the excavation machine is sequentially propelled against the curved surface of the shaft inner wall, so that the sealing tube or wire brush packing is brought into contact with the outer periphery of the excavation machine in a three-dimensional state and stopped. It was not the structure which produces the water effect.

  In addition, the reduction of the back strength at the start of cutting results in incomplete cutting of the cuttable reinforcing material molded in the cylindrical shaft, and the uncut portion penetrates into the wellhead packing. It has been difficult to ensure water stopping because groundwater penetrates into a cylindrical shaft with a nearby uncut portion as a waterway.

  Moreover, since the temporary entrance side wall of the wellhead is removed after the excavation work is completed, the water stoppage between the cylindrical shaft side wall and the segment or the propulsion pipe is incomplete, causing water leakage and weakening of the cylindrical shaft side wall. .

  In the present invention with respect to the above-mentioned problem, when the excavation machine is propelled against the curved surface of the shaft inner wall, both horizontal ends of the outer shape of the excavation machine are first brought into contact with the inside of the excavation machine starting circular recess, Subsequently, since the entire circumference is sequentially promoted, as a result, the sealing tube or the wire brush packing is brought into contact with the outer circumference of the excavation machine in a three-dimensional state so that a water stop effect is generated.

  That is, the excavation machine is started from the inside of the cylindrical shaft, and a circular recess for starting the excavation machine is formed inside the cylindrical shaft to form a lateral resistance. A steel plate was attached, a sealing tube and a flap were attached to the ring-shaped steel plate, or a wire brush packing was attached, and a plurality of swingable flaps were attached to the ring-shaped steel plate inside the temporary entrance side wall in a series or in duplicate. The two flaps are swingably connected to the inside of the ring-shaped steel plate fixed to the inner side of the wellhead temporary side wall, and the function of preventing water stoppage and sediment discharge inside the shaft opening of the shaft side wall. A sealing tube or wire brush packing having a fixed structure is fixed, a water-stopping material or air is filled in the sealing tube, and earth and sand are filled in the wire brush packing. It is configured to be filled with a water-stopping material for prevention of discharge, and is filled with a water-stopping material on the outer periphery of the two flaps via a pressure feed pipe arranged on the temporary side wall, or water is stopped inside the sealing tube. A sealing tube or wire brush packing that is configured to be filled with material or air and is in contact with the excavating machine excavated from the shaft wall or the propelling pipe installed after excavation is three-dimensionally formed inside the excavation opening of the shaft wall An entrance for a horizontal excavation or an exit for reaching is provided, which is configured to be in close contact with the water and maintain a water stop function.

  According to the present invention, two flaps are slidably connected to the inner side of the ring-shaped steel plate, and a sealing tube or a wire brush packing having a water stop function is abutted on the inner side of the digging opening on the side wall, Fill the outer periphery of the two flaps with a water-stopping material, or fill the sealing tube with a water-stopping material or air, or stop the wire brush packing inside. Since it is configured to be filled with water material, the sealing tube abutting on the excavating machine drilled from the cylindrical shaft and the propelling pipe installed after drilling is the wire brush packing inside the drilling opening of the cylindrical shaft It is possible to maintain a water stop function by being closely attached in a three-dimensional manner.

  Further, based on the above-described technical contents, even when a tilt shaft is formed with respect to a vertical shaft, a sealing tube or a wire brush packing that comes into contact with a digging machine drilled from a cylindrical shaft and a propelling pipe installed after the digging is In addition, it can be applied to inclined shaft formation because it can be three-dimensionally adhered to the inside of the opening of the cylindrical shaft and maintain the water stop function.

  In the above description, a cylindrical shaft is described. However, even in the case of a rectangular tube shaft, it can be implemented using the above-described technical contents, and the configuration of the present invention is an entrance for horizontal excavation or It can be applied to an exit for arrival.

  It is the fragmentary perspective view which started the excavation machine to the cylindrical shaft wall.   It is the fragmentary perspective view which made the excavation machine reach the cylindrical shaft wall.   It is a side wall inner side perspective view of a cylindrical shaft.   It is the EE sectional view taken on the line of FIG.   FIG. 2 is a partial cross-sectional view taken along line AA in FIG. 1.   It is an entrance fragmentary sectional perspective view.   It is a flap attachment perspective view.   It is an entrance fragmentary sectional perspective view.   It is an entrance fragmentary sectional perspective view.   It is an entrance fragmentary sectional perspective view.   It is wire brush packing attachment sectional drawing.   It is wire brush packing attachment sectional drawing.   It is a cylindrical vertical shaft opening sealing tube development view.   It is a cylindrical shaft shaft opening wire brush packing development view.

  In order to start the excavation machine 2 from the inside of the shaft wall 1 and form a lateral resistance, a circular recess 10 for starting the excavation machine is formed inside the shaft wall 1, and a ring is formed on the inner edge 11 of the circular recess for starting the excavation machine. A steel plate 152 is attached, a sealing tube 16 and a flap 15 are attached to the ring steel plate 152, or a wire brush packing 200 is attached, and a plurality of swingable steel plates 132, 142 inside the wellhead temporary side wall 12 are swingable. The flaps 13 and 14 are attached in series or in duplicate.

  Two flaps 13, 14 are slidably connected to the inside of the ring-shaped steel plates 132, 142 fixed to the inside of the wellhead temporary side wall 12, and the water stop function is provided inside the excavator cutting part 110 of the shaft wall 1. The sealing tube 16 or the wire brush packing 200 is fixed, the sealing tube 16 is filled with a water-stopping material or air, and the wire brush packing 200 is filled with a grease material 21 for preventing sediment discharge.

  The outer periphery of the two flaps 13 and 14 is filled with a water-stopping material through the air venting / compression feeding pipes 131 and 141 arranged on the temporary entrance wall 12, or the water-stopping material 19, 20 or the inside of the sealing tube Can be filled with air.

  The sealing tube 16 or the wire brush packing 200 abutting against the excavating machine 2 excavated from the shaft wall 1 or the segment or propelling pipe 21 installed after excavation is three-dimensionally formed inside the excavator cutting part 110 of the shaft wall 1. It is configured to be in close contact and to maintain a water stop function.

  According to the configuration of the present invention as described above, the sealing tube 16 or the wire brush packing 200 is in close contact with the inside of the excavator cutting part 110 of the shaft wall 1 in a three-dimensional shape and can maintain a water stop function. It can be applied to a horizontal pit entrance or a reaching exit.

DESCRIPTION OF SYMBOLS 1 Shaft wall 2 Excavation machine 21 Segment or propulsion pipe 10 Circular recess 110 for excavation machine start 11 Excavator cutting part 11 Inner edge of circular recess for excavation machine start 11 Reinforceable material 12 Wellhead temporary side wall 13 Flap 14 Flap 15 Flap 16 Sealing tube 17 Pressure feed pump 171 Pressure gauge 172 Valve 18 Water stop material 19 Water stop material 20 Water stop material, water or air 24 Grease 131 Air release combined pressure feed pipe 141 Air release combined pressure feed pipe 150 Air release combined pressure feed pipe 151 Air release Combined pressure feeding pipe 156 Air venting combined pressure feeding pipe 132 Ring-shaped steel plate 142 Ring-shaped steel plate 152 Ring-shaped steel plate 153 Wire brush holding member 154 Bolt 155 Inlet 200 Wire brush packing

Claims (3)

  An excavation machine is started from the inside of the shaft wall, and an excavation machine start wall is formed inside the shaft wall in order to form a cross, and a ring-shaped steel plate is attached to the inner edge of the circular recess for starting the excavation machine. Horizontal excavation characterized by attaching a sealing tube and a flap to a steel plate, or attaching a wire brush packing, and attaching a plurality of swingable flaps in series or in duplicate to a ring-shaped steel plate inside the temporary entrance side wall Entrance or arrival exit.   Two flaps are swingably connected to the inside of the ring-shaped steel plate fixed to the inside of the wellhead side wall, and a sealing tube or wire brush packing with a water stop function is fixed to the inside of the well opening of the shaft wall. The sealing tube is filled with a water-stopping material, water or air, and the wire brush packing is filled with a water-stopping material for preventing sediment outflow. Side pit entrance or exit.   Sealing tube or wire brush packing that is in contact with the excavating machine excavated from the shaft wall or the segment or propulsion pipe installed after excavation is closely attached in three dimensions inside the excavation opening of the shaft wall to maintain the water stop function The entrance for a horizontal excavation or the exit for arrival of Claim 1 characterized by the above-mentioned.

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