JP2013028942A - Filling device, filling method, plate insertion method, and element insertion method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filling device and a filling method, which allow a long cavity formed in the ground in approximately horizontal direction to be filled with a curable filler under accurate pressure control even for a long filling distance; and a plate insertion method and an element insertion method using the filling method.SOLUTION: A filling method allows a space in a natural ground 400 surrounded by a flange plate 152 and a halved guide pipe 41 which are long in approximately horizontal direction to be filled with a curable filler 91. An injection bag 90 for injecting the filler 91 is arranged in the longitudinal direction X of the halved guide pipe 41, and a pressure control hose 81 for transmitting the pressure between the injection bag 90 and a pipe inner surface 41a in the longitudinal direction X is arranged between the injection bag 90 and the pipe inner surface 41a in the longitudinal direction X of the halved guide pipe 41. Under pressure control based on the pressure in the pressure control hose 81, the filler 91 is sequentially injected from an arrival shaft side to a start shaft side of the injection bag 90.

Description

  For example, the present invention relates to a filling device and a filling method for filling a long cavity formed substantially horizontally in the ground with a curable filling material, a plate material insertion method using the filling method, and an element insertion method.

  If a cavity exists in the ground, if the cavity is left as it is, the surrounding natural ground may loosen and the ground surface may sink. Therefore, conventionally, many methods for filling a cavity with a curable filler have been proposed. For example, in the filling method proposed in Patent Document 1, a lock bolt and a bag body are inserted into a hole formed by drilling a natural ground, a fixing material is injected into the bag body, and the lock bolt is fixed. Is a method of filling.

  In such a filling method, as disclosed in the above-mentioned Patent Document 1, it is possible to manage the filling by the discharge pressure and the filling amount of the filling material in the filling device in consideration of the effect of the ground surface rise due to the injection pressure. Many.

  However, when the filling distance is long, such as when the extension distance of the cavity is long or the distance from the filling device to the filling point is long, the pressure loss due to the internal resistance of the delivery pipe that feeds the filling material increases, so injection at the filling point It was difficult to accurately control and fill the pressure.

JP 2006-161457 A

  Accordingly, the present invention provides a filling apparatus and a filling method for accurately filling a long cavity formed in a substantially horizontal direction in the ground with a curing-type filling material even when the filling distance is long, It is another object of the present invention to provide a plate material insertion method and an element insertion method using the filling method.

  The present invention is a filling method for filling a cavity that is long in the horizontal direction in the ground with a curable filler, and an injection bag that allows injection of the filler is disposed along the longitudinal direction of the cavity. And pressure transmission that transmits pressure between the infusion bag and the cavity wall at least in the longitudinal direction along the longitudinal direction of the cavity between the infusion bag and the cavity wall forming the cavity. The filler is sequentially injected from the distal end side to the proximal end side of the infusion bag while controlling the pressure by the pressure by the pressure transmission means.

The substantially horizontal direction is a concept including an inclination angle that does not allow the injected filler before curing to flow down according to the fluidity such as the slump value and flow value of the filler.
The curable filler is a grout material called a so-called backing material, and has fluidity that can be injected before curing and has a predetermined strength after curing, for example, cement-based or resin-based grout material. It can be.

The cavity can be the inside of a guide pipe inserted into the ground, the inside of a drilled hole drilled in the ground, or the cavity formed in the ground by being washed away by groundwater or the like.
Pressure transmitting means for transmitting the pressure at least in the longitudinal direction is a pressure transmitting means in which a volume change due to pressure is small and a fluid such as a liquid or gel-like body that transmits pressure by its own internal stress transmission is enclosed, or The pressure transmission means can transmit detection results from a plurality of pressure sensors arranged in the longitudinal direction.

According to the present invention, even when the filling distance is long, a long cavity formed in the substantially horizontal direction in the ground can be accurately pressure-controlled and filled with a curable filling material.
More specifically, the pressure between the infusion bag and the cavity wall is increased along the longitudinal direction of the cavity between the infusion bag disposed along the longitudinal direction of the cavity and the cavity wall forming the cavity. Since the pressure transmission means for transmitting at least in the longitudinal direction is arranged, the actual pressure at which the injected filler presses the cavity wall through the injection bag is transmitted by the pressure transmission means.

  Therefore, the pressure loss due to the in-pipe resistance of the delivery pipe that feeds out the filler by injecting the filler sequentially from the distal end side to the proximal end side of the injection bag while controlling the pressure by the pressure by the pressure transmission means. Regardless of the affected filling distance, the cavity can be filled with filler based on accurate pressure management. Therefore, there is no possibility of unfilling of the filler due to insufficient pressure, or the rise of the ground surface due to excessive pressure, and the cavity can be filled safely.

  As an aspect of the present invention, the pressure transmission means is constituted by a fluid and a long sealed hose that allows the fluid to be sealed and has flexibility, and is disposed on the proximal end side of the sealed hose. The pressure detecting means for detecting the pressure of the fluid can be provided.

  The fluid can be a liquid such as water, a gas such as air, or a gel, but is preferably a fluid with a small volume change due to pressure, and more preferably a fluid with a small volume change due to temperature. More preferred. It should be noted that water has a small volume change due to pressure and temperature in the normal temperature range, is inexpensive and safe, and is suitable as a fluid in the pressure transmission means.

  The long sealed hose having flexibility is made of a material that can be sealed so that the fluid inside does not leak while being deformed by a force equal to or lower than the control pressure, for example, a hose such as a sunny hose can do.

  According to the present invention, it is possible to fill a cavity with a filler with a simpler structure and accurately controlling pressure. Specifically, the pressure transmission means is constituted by a fluid and a long sealed hose which allows the fluid to be enclosed and has flexibility, for example, pressure transmission means using a pressure sensor. Compared with, the structure is simple, so there is less risk of failure and less time to place. Therefore, the filler can be filled into the cavity while accurately controlling the pressure.

  In addition, in order to dispose a long cavity in a substantially horizontal direction in the ground, the pressure transmission means constituted by the fluid and the long sealed hose having flexibility while allowing the fluid to be sealed, For example, the influence of the water pressure acting when arranged in a vertical or inclined cavity is small, and accurate pressure management can be performed.

As an aspect of the present invention, the fluid and the filler can be replaced after the filler injected into the injection bag is cured.
The replacement of the fluid and the filler described above can be an injection of the filler into the gap after removing the fluid and the enclosed hose, or an injection of the filler into the inside of the enclosed hose. In addition, the same filler may be sufficient as the filler replaced with a fluid body, and the filler injected into an injection | pouring bag, and the different filler which has a desired property may be sufficient as it.

  According to this invention, the cavity can be more reliably filled with the filler. Specifically, even if the filler is injected into the injection bag, a gap corresponding to the pressure transmission means constituted by the enclosed hose and the fluid remains in the cavity. By filling this void portion with a filler, the filling rate of the filler inside the cavity can be improved and more reliably filled.

  In addition, when the contact area between the pressure transmitting means constituted by the enclosed hose and the fluid and the cavity wall is smaller than the contact area between the injection bag into which the filler is injected and the cavity wall, the injected filler is used as the injection bag. Compared with the pressure exerted on the cavity wall, the pressure applied to the cavity wall by the filler injected into the gap corresponding to the pressure transmission means is smaller, so there is no risk of the ground surface rising due to excessive pressure, etc. The cavity can be filled.

Further, the present invention cuts a natural ground between two buried pipes with a wire saw passing through each of the buried pipes together with an opposing portion of the buried pipe, and proceeds in the longitudinal direction of the buried pipe, In the plate material insertion method for inserting a plate material into a cut portion cut with a wire saw, after inserting the plate material into the cut portion cut with the wire saw, a space surrounded by the inserted plate material and the buried pipe is the abbreviation. It is characterized by filling with the said filler by the above-mentioned filling method as a cavity long in a horizontal direction.
The buried tube includes tubes having various cross-sectional shapes such as a circle, an ellipse, and a substantially rectangular shape, and can be a tube made of a material that can be cut with a wire saw.

  According to this invention, the ground between the two circular buried pipes is cut with a wire saw, and the plate material is efficiently inserted into the cut portion cut with the wire saw, and surrounded by the inserted plate material and the buried pipe. The above-mentioned filling method can be safely filled with the filling material without being affected by the filling distance.

  Furthermore, the present invention is an element insertion method in which an element having a closed cross-sectional shape having a top plate at the top is inserted into a natural ground and the inside of the element is excavated, and the elements are connected in a direction intersecting the longitudinal direction. The joint means in the longitudinal direction is disposed inside the buried pipe so as to be connectable, and the top plate projects forward from the front end in the element insertion direction. In the above-described plate material insertion method, the grout material is injected into the joint means in the connected state after the filler injected into the injection bag is cured.

The element having the closed cross-sectional shape includes various cross-sectional shapes such as a rectangular cross-section and a trapezoidal cross-section.
The top plate configured to protrude forward from the front end in the element insertion direction includes not only the front end in the element insertion direction but also the front end in the insertion direction of the blade mounted on the front side in the element insertion direction.

  According to the present invention, for example, when an element is inserted immediately below the track, the top plate protruding forward from the front end in the element insertion direction can be inserted in advance into the cut portion of the ground cut by the wire saw. Therefore, the element can be inserted without the influence of stress release of the natural ground due to excavation or the like reaching the upper structure such as the track immediately above. In addition, the space surrounded by the inserted top plate and the buried pipe remaining on the natural ground side can be safely filled with the filler by the above-described filling method without being affected by the filling distance.

  In addition, after hardening of the filler injected into the injection bag, in order to inject the grout material into the joint means in the connected state, in the space surrounded by the inserted top plate and the buried pipe remaining on the ground mountain side, The grout can be reliably injected without leakage of the grout material injected into the joint means in the connected state. Therefore, the force acting on the element can be reliably transmitted to the elements connected in the direction intersecting the longitudinal direction by the joint means.

  Furthermore, the present invention is a filling device that fills a cavity that is long in a substantially horizontal direction in the ground with a curable filler, which is disposed along the longitudinal direction of the cavity and allows injection of the filler. A long sealed hose that is arranged along the longitudinal direction of the cavity between the infusion bag, the cavity wall that forms the cavity, and the infusion bag, and that allows the fluid to be sealed and has flexibility. And a pressure detection means for detecting the pressure of the fluid, and a pressure control means based on the pressure detected by the pressure detection means, while controlling the pressure from the distal end side of the infusion bag to the proximal end side And a filler injection means for sequentially injecting the filler.

According to the present invention, even when the filling distance is long, a long cavity formed in the substantially horizontal direction in the ground can be accurately pressure-controlled and filled with a curable filling material.
Specifically, the infusion bag is disposed along the longitudinal direction of the cavity and allows the infusion of the filler, and is disposed along the longitudinal direction of the cavity between the cavity wall forming the cavity and the infusion bag. In addition, by allowing the fluid to be sealed and having a flexible long sealed hose, the actual pressure at which the filler injected through the infusion bag presses against the cavity wall is a pressure. It is transmitted by the transmission means.

  Therefore, the filler is injected into the filling hose sequentially from the distal end side to the proximal end side of the infusion bag while controlling the pressure by the pressure detection means for detecting the pressure of the fluid provided at the proximal end side of the sealing hose. By injecting by the means, the filler can be filled into the cavity based on accurate pressure control regardless of the filling distance affected by the pressure loss due to the resistance in the pipe of the delivery pipe that sends out the filler. Therefore, there is no possibility of unfilling of the filler due to insufficient pressure, or the rise of the ground surface due to excessive pressure, and the cavity can be filled safely.

  According to the present invention, even when the filling distance is long, a filling device and a filling method for filling a long cavity formed in a substantially horizontal direction in the ground with a curable filling material with accurate pressure control, In addition, a plate material insertion method and an element insertion method using the filling method can be provided.

The schematic perspective view of the underground crossing structure constructed under a track. The schematic front view of the same state. The schematic longitudinal cross-sectional view of the same state. Explanatory drawing about a cross-section circular guide pipe. The flowchart of a guide pipe filling method. The schematic block diagram of a guide pipe filling apparatus. Explanatory drawing about a cross-section circular guide pipe. Explanatory drawing about a cross-section circular guide pipe. Schematic explanatory drawing about a blade edge. The schematic front view before constructing an underground crossing structure under a track. Schematic explanatory drawing about the blade edge of another embodiment.

An embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 4 (b), the present invention is a filling method for filling a half-cavity H, which is long in a substantially horizontal direction in a natural ground 400, with a curable filling material 91. The permissible infusion bag 90 is disposed along the longitudinal direction X of the half cavity H, and the longitudinal direction X of the half cavity H between the infusion bag 90 and the pipe inner surface 41a forming the half cavity H. A pressure management hose 81 that transmits the pressure between the infusion bag 90 and the pipe inner surface 41a in the longitudinal direction X is disposed, and while the pressure is controlled by the pressure by the pressure management hose 81, the reach shaft 420b side of the infusion bag 90 Is a method of injecting the filler 91 sequentially from the start to the start shaft 420a side. Furthermore, the pressure management hose 81 is composed of water 81a and a long hose body 81b that allows the water 81a to be sealed and has flexibility, and the water 81a is placed on the start shaft 420a side of the hose body 81b. This is a method of filling the unfilled space R of the pressure management hose 81 with the filler 91 after the filler 91 injected into the injection bag 90 is cured, and a guide pipe filling device 80. It is done using.

  In the following, while using such a filling method, an element insertion method for constructing the underground underground structure 300 by inserting a square steel element 150 below the track 200 will be described with reference to FIGS. The above-described filling method will be described in detail.

  FIG. 1 shows a schematic perspective view of an underground crossing structure 300 constructed below the track 200, FIG. 2 shows a schematic front view of the same state, and FIG. 3 shows a schematic longitudinal sectional view of the same state. In FIG. 3, an intermediate portion of the double track 200, that is, an intermediate portion in the insertion direction X is omitted. In the present specification, the longitudinal direction X of the square steel element 150 and the circular guide pipe 40 described above and the insertion direction X of the square steel element 150 are the same direction, and therefore are denoted by the same reference symbol X. Yes.

  FIG. 4 shows an explanatory view of the cross-sectional circular guide pipe 40 filled with the filler 91. Specifically, FIG. 4A shows an enlarged front view of the cross-sectional circular guide pipe 40 before the filler 91 is filled. FIG. 4B shows an enlarged front view of the circular cross-section guide pipe 40 after the filling of the filler 91 is completed.

  FIG. 5 shows a flowchart of the guide pipe filling method, and FIG. 6 shows a schematic configuration diagram of the guide pipe filling apparatus 80. Specifically, FIG. 6A shows a schematic plan view of the infusion bag 90, and FIG. 6B shows a configuration diagram of a guide pipe filling device 80 using the infusion bag 90.

  Further, FIG. 7 and FIG. 8 are explanatory views of the circular guide pipe 40 in section. Specifically, FIG. 7A shows an enlarged front view of the state in which the injection bag 90, the pressure management hose 81 and the filler injection pipe 83 are arranged, and FIG. 7B shows the filler 91 inside the injection bag 90. An enlarged front view of the injected state is shown. 8A shows an enlarged front view of the state where the filler 91 is injected into the coupling joint 151, and FIG. 8B shows the filler in the unfilled space R after the filler 91 is removed. The enlarged front view of the state which has arrange | positioned the injection pipe 83 is shown.

FIG. 9 is an explanatory view of the blade edge 160. 9A is a longitudinal sectional view from the side of the blade edge 160, and FIG. 9B is a longitudinal sectional view of the blade edge 160 in the plane direction.
Further, FIG. 10 shows a schematic front view of a state where the circular guide pipe 40 is inserted into the natural ground 400 in the element insertion method.

  As shown in FIGS. 1 to 3, the track 200 in which the square steel element 150 is inserted to construct the underground crossing structure 300 is provided with a road bed 401 a and a roadbed 401 b at the upper part of the natural ground 400. The embankment 401 is constructed by embankment, the ballast 402 is compacted on the embankment 401, the sleepers 202 are placed at equal intervals in the longitudinal direction, and the rails 201 are fixed on the sleepers 202. .

  The underground crossing structure 300 constructed in the direction crossing the track 200 (left-right direction in FIG. 3) is a rectangular section box constructed in the natural ground 400 at a position where the upper floor portion 300a becomes a predetermined earth covering. In FIGS. 1 to 3, the underground crossing structure 300 with the connected square steel elements 150 exposed is illustrated. However, depending on the use of the underground crossing structure 300, the underground crossing structure 300 is illustrated. The underground crossing structure 300 is completed by constructing pavement and concrete in the interior space 300b and the end of the interior.

  As described above, the underground crossing structure 300 is a track between the vertical shafts 420 (starting vertical shaft 420a and reaching vertical shaft 420b) constructed by dug down using earth retaining walls (not shown) built in advance on both sides in the horizontal direction of the track 200. It is a structure that penetrates the natural ground 400 below 200.

  As shown in FIGS. 1 and 3, the underground underground structure 300 is constructed by connecting square steel elements 150 arranged in a horizontally long rectangular shape when viewed from the front, and excavating the inside thereof.

  As shown in FIG. 2, the square steel element 150 is formed in a substantially rectangular shape, and is configured to be connectable in the connecting direction Z <b> 1 by a connecting joint 151 described later, and has a predetermined length. And the structure which secures the length of the underground crossing structure 300 by connecting the square steel element 150 formed in predetermined length in the longitudinal direction (insertion direction) X with a connection member (illustration omitted). It is.

  In addition, in the case of the square steel element 150 which comprises the upper floor part 300a and the lower floor part of the underground crossing structure 300, the connection direction Z1 corresponds with the width direction of the underground crossing structure 300, and In the case of the square steel element 150 constituting the side wall, it coincides with the height direction of the underground underground structure 300. Therefore, the cross direction Z2 orthogonal to the connection direction Z1 is the height direction of the underground crossing structure 300 in the case of the square steel element 150 constituting the upper floor portion 300a and the lower floor portion of the underground crossing structure 300. In the case of the square steel element 150 that coincides and forms the side wall of the underground crossing structure 300, it matches the width direction of the underground crossing structure 300.

  Specifically, as shown in FIG. 2, two flange plates 152 arranged at a predetermined interval in the intersecting direction Z2 orthogonal to the connecting direction Z1, and the intersecting directions on both sides of the connecting direction Z1 in the flange plate 152 The web plate 153 facing Z2 is configured to have a square cross section.

  At both ends of the flange plate 152, as shown in FIG. 4, a coupling joint 151 having a substantially C-shaped cross section is provided. Specifically, the base end side coupling joint 151a disposed on the base end side in the connecting direction Z1 of the flange plate 152 is formed in a substantially inverted C shape in a protruding manner from the flange plate 152 to the outside in the intersecting direction Z2. On the other hand, the distal end side coupling joint 151b disposed on the distal end side in the coupling direction Z1 of the flange plate 152 is formed in a substantially C shape in a protruding manner inside the intersecting direction Z2 from the flange plate 152. Therefore, the adjacent square steel elements 150 are connected to the distal end side coupling joint 151b of the already inserted square steel element 150 and the proximal end side coupling joint of the square steel element 150 to be inserted later. 151a is fitted and connected.

  Further, the web plate 153 is disposed at an appropriate interval in the connecting direction Z1 from the connecting joint 151 on the distal end side and the proximal end side of the flange plate 152. Therefore, between the adjacent square steel elements 150, the web plate 153 of the inserted square steel element 150, the web plate 153 of the square steel element 150 to be inserted later, and the flange plate 152 are inserted. The connecting space 156 surrounded by the connecting joint 151 is configured.

  The square steel element 150 configured in this way is not used as a temporary structure but is used as a structural member of the main body of the underground underground structure 300. Accordingly, the distance between the flange plates 152 in the intersecting direction Z2, that is, the length of the web plate 153 in the intersecting direction Z2 is the upper floor portion and lower floor portion of the underground crossing structure 300 together with the concrete filling the internal space 155 and the connecting space 156. Or as a side wall, it is comprised by the space | interval which can endure the load which acts. Further, the width of the square steel element 150, that is, the length in the connecting direction Z1 of the flange plate 152 is determined by allocating according to the height and width dimensions of the underground underground structure 300 to be constructed.

  In the description of the square steel element 150 described above, the general square steel element 150 constituting the underground underground structure 300 has been described. However, as shown in FIG. The reference element 150a, the corner element 150b that forms the corner of the underground crossing structure 300, and the adjustment element 150c that is inserted and closed in an annular shape are the corners of the above-described general part as described below. The structure is slightly different from the steel element 150.

  First, the reference element 150a to be inserted into the natural ground 400 includes the front end side coupling joints 151b at both ends of the flange plate 152 in order to connect the square steel elements 150 to the left and right sides with respect to the reference element 150a. The plates 153 are arranged on both sides in the connecting direction Z1 (not shown). On the contrary, the adjustment element 150c that is inserted last and closed in an annular shape is connected to each of the inserted square steel elements 150 that are inserted on both the left and right sides. While providing the side connection coupling 151a, the web board 153 is arrange | positioned at the both sides of the connection direction Z1 (illustration omitted).

  In the corner element 150b, the connecting direction is orthogonal to the base end side where the base end side connecting joint 151a is located, and therefore the front end side connecting joint 151b is disposed on the extension of the web plate 153 in the intersecting direction Z2. .

  In the above description, it is described that the underground crossing structure 300 having a horizontally long rectangular cross section is constructed by the square steel element 150, the reference element 150a, the corner element 150b, and the adjustment element 150c of the general part. However, the reference element 150a and the corner element 150b are arranged in a single horizontal shape, or arranged in a vertical row, or the square steel element 150, the reference element 150a, and the corner element 150b are arranged in a T shape, and a gate-type arrangement. Alternatively, the underground crossing structure 300 may be constructed in an L-shaped arrangement. Furthermore, the underground underground structure 300 having a circular cross section or an arc-shaped cross section may be constructed using the trapezoidal cross section or the strip-shaped arc-shaped square steel element 150, the reference element 150a, and the adjustment element 150c.

  The square steel element 150 having such a configuration (hereinafter, the square steel element 150 includes the reference element 150a, the corner element 150b, and the adjustment element 150c unless there is a contradiction) is shown in FIG. A blade edge 160 as shown is attached to the tip of the square steel element 150 in the longitudinal direction X, and the natural ground 400 in front of the blade edge 160 is removed by manual excavation by a drilling worker inside the blade edge 160. While excavating, it is towed from the reach shaft 420b with a primary tow wire (not shown) and inserted into the natural ground 400.

  The blade edge 160 includes a blade edge main body 161 having substantially the same front shape as the square steel element 150, and a plate-shaped blade edge plate 162 whose upper surface protrudes forward (to the left in FIG. 9). And a wire saw device 164 that drives a wire saw 163 that circulates in parallel with the cutting edge plate 162 in front of the cutting edge plate 162.

  The wire saw device 164 is disposed inside the blade edge main body 161, and a rotating pulley 163a that changes the direction of the wire saw 163 that is rotationally driven by the wire saw device 164 slightly forward of the blade edge plate 162 in the width direction. It has.

  The configuration of the blade edge 160, the method of connecting to the square steel element 150, and the detailed configuration of the wire saw 163 and the wire saw device 164 are the inventions filed by the applicants (Japanese Patent Laid-Open No. 2010-174542). The detailed description is omitted.

  Thus, when the blade edge 160 is towed from the reaching shaft 420b with a primary towing wire (not shown), the ground 400 in front of the blade edge plate 162 is cut by the wire saw 163, and the ground is cut by the wire saw 163. The cutting edge plate 162 can be inserted into the cutting trace.

  As shown in FIG. 9, the rotary pulley 163 a in the blade edge 160 is disposed inside a circular guide pipe 40 having a circular cross section that functions as a guide pipe that is inserted through the natural ground 400 in the insertion direction X in advance. Specifically, as shown in FIG. 9, the rotary pulley 163 a that changes the direction of the wire saw 163 for forming a cutting trace that allows insertion of the blade edge plate 162 of the blade edge 160 is the blade edge 160 as described above. The blade edge plate 162 is disposed on the outer side in the width direction and slightly forward, and is disposed in the left and right circular guide pipes 40 for preventing the rotation pulley 163a and the natural ground 400 from contacting each other.

The construction sequence of the element insertion method using the blade 160 configured as described above will be described below.
First, as shown in FIG. 10, the circular guide pipe 40 is inserted in advance into the passage portion of the rotary pulley 163 a of the upper floor portion 300 a ′ in the planned cross section 300 ′ for constructing the underground underground structure 300.

  In FIG. 10, the total number of cross-section circular guide pipes 40 in the upper floor portion 300a ′ are inserted. First, the reference element 150a is inserted through the two cross-section circular guide pipes 40 on both sides of the reference element 150a. After completion, the circular guide pipe 40 may be inserted into the circular cross-section guide 40 in sequence, and the circular circular guide pipe 40 for the square steel element 150 to be inserted next or next together with the insertion of the square steel element 150 is inserted. May be inserted.

  Next, the cutting edge 160 attached to the square steel element 150 is set to the two cross-sectional circular guide pipes 40, and the cutting edge 160 is pulled with a primary pulling wire from the reaching shaft 420b side, and the circular cross-sectional guide It moves while cutting with the wire saw 163 together with the ground 400 between the pipes 40, and inserts the blade edge plate 162 into the ground 400 cut by the wire saw 163 and the cut portion of the cross-section circular guide pipe 40, The square steel element 150 is inserted while excavating the natural ground 400 from the inside of 160. This is repeated until the end of the square steel element 150 reaches the reaching shaft 420b, and the insertion of the square steel element 150 is completed.

  Further, in the guide pipe 40 having a circular cross section, while the connecting joint 151 is fitted to the base end side connecting joint 151a of the already inserted square steel element 150, the next square steel element 150 is subjected to the above-described construction procedure. Construction is completed and the insertion of the square steel element 150 for constructing the underground crossing structure 300 is completed.

  When the insertion of the square steel element 150 is completed, as shown in FIG. 4A, the cutting edge plate 162 and the flange are formed at the cutting position cut by the wire saw 163 together with the ground 400 between the circular guide pipes 40. By inserting the plate 152, a half-section circular guide pipe 40 (hereinafter referred to as a half-guide pipe 41) cut to the natural ground 400 side above the coupling joint 151 is square steel in the longitudinal direction X. It will remain over the extension of the element 150 made.

  The interior of the half guide pipe 41 above the coupling joint 151 is a cavity (hereinafter referred to as half cavity H), and the lower end of the half guide pipe 41 is only placed on the upper surface of the flange plate 152. It is. Therefore, when the upper load from the natural ground 400 acts on the half guide pipe 41, the half guide pipe 41 is deformed so that the half cavity H is crushed, and along with the deformation of the half guide pipe 41, The natural ground 400 around the halved guide pipe 41 may be loosened, and the ground surface of the natural ground 400 and the track 200 may sink.

  Therefore, in the element insertion method in the present embodiment, a filling method for filling the half cavity H inside the half guide pipe 41 with the filler 91 is performed using a guide pipe filling device 80 described later.

  As shown in FIG. 6B, the guide pipe filling device 80 includes an injection bag 90 that allows the filling material 91 to be injected therein, a pressure management hose 81, a water pressure gauge 82 that detects the water pressure of the pressure management hose 81, and an injection. Filler injection pipe 83 for injecting filler 91 into bag 90, pressure gauge 84 for detecting the discharge pressure of filler 91, flow meter 85 for detecting the injection amount of filler 91, and filler 91 It consists of a grout pump 86 that pumps.

  As shown in FIG. 6 (a), the injection bag 90 is a belt-like bag body having a length corresponding to the extension of the circular guide pipe 40, and is a high-density base fabric that does not leak the injected filler 91. It is composed. Further, both end portions in the longitudinal direction are provided with end portion opening portions 90a that protrude with appropriate lengths and communicate with the inside. The injection bag 90 is formed in a bag shape having a cross section that is slightly larger than the cross section of the half cavity H inside the half guide pipe 41.

  The filler 91 is a grout material called a so-called backing material, and is a cement-type grout material having fluidity that can be injected before curing and having a predetermined strength after curing.

  The pressure management hose 81 has the same length as the infusion bag 90, and is composed of a hose body 81b that encloses water 81a and water 81a. The hose body 81b is made of a material that can be deformed at a pressure lower than the injection management pressure of the filling material 91 into the injection bag 90 described later. In this embodiment in which the injection management pressure is set to 0.0075 MPa in accordance with the earth covering from the half guide pipe 41 to the ground surface of the natural ground 400, the sunny hose 2B is used as the hose body 81b.

  Then, water 81a is sealed so as to be 0.006 to 0.007 MPa lower than the injection management pressure 0.0075 MPa by the water pressure gauge 82 connected to the base end side of the pressure management hose 81 (left side in FIG. 6B). doing. Since the pressure management hose 81 is connected to a pressure relief valve (not shown), the water 81a is discharged when a pressure higher than the injection management pressure acts on the pressure management hose 81. .

  The pressure management hose 81 is arranged between the injection bag 90 and the pipe inner surface 41a of the half guide pipe 41 over the entire length in the longitudinal direction of the half guide pipe 41, and is inserted into the pipe from the filler 91 through the injection bag 90. The pressure acting on the surface 41 a is transmitted to the base end side and can be detected by the water pressure gauge 82 connected to the pressure management hose 81.

  Filler injection tube 83 for injecting filler 91 into injection bag 90, pressure gauge 84 for detecting the discharge pressure of filler injection tube 83, flow meter 85 for detecting the injection amount of filler 91, and filling The grout pump 86 for pumping the material 91 is connected in this order, and the filler 91 pumped by the grout pump 86 is injected from the tip of the filler injection pipe 83 while the injection amount is detected by the flow meter 85. . The filler injection tube 83 is formed to have a length corresponding to the injection bag 90 by connecting a plurality of injection tubes of a predetermined length.

The construction sequence of the filling method of the filling material 91 using the guide pipe filling device 80 configured as described above will be described based on the flowchart shown in FIG.
First, in order to fill the half-cavity H of the half guide pipe 41 with the filler 91, the earth and sand accumulated in the half guide pipe 41 and the coupling joint 151 are cleaned with a high washer or the like (step s1). At this time, the inner boundary portion of the connecting portion of the connecting joint 151 is water-stop coated from the inside of the square steel element 150.

  After the cleaning of the inside of the half guide pipe 41 is completed, the injection bag 90 and the pressure management hose 81 are inserted into the half cavity H inside the half guide pipe 41 (step s2). Specifically, the pressure management hose 81 and the injection bag 90 are prepared in the start vertical shaft 420a (FIG. 3), and are drawn into the half cavity H from the start vertical shaft 420a toward the arrival vertical shaft 420b (FIG. 3). At this time, the infusion bag 90 and the pressure management hose 81 are placed in this order on a rug (not shown) configured with the sunny hose 6B to protect the infusion bag 90. After the management hose 81 is drawn into the half guide pipe 41 and installed, the protective covering is removed. Further, the filler injection pipe 83 is inserted into the injection bag 90 until the tip reaches the reaching shaft 420b, and the position is adjusted so that the pressure management hose 81 is at the center in the width direction of the injection bag 90.

  Subsequently, the primary injection preparation for injecting the filler 91 into the injection bag 90 by the filler injection pipe 83 is performed (step s3). In this primary injection preparation, first, the water 81a is sealed inside the pressure control hose 81 while adjusting the water pressure gauge 82 so that a predetermined pressure is obtained, so that a half cavity is formed as shown in FIG. At H, the pressure management hose 81 is placed above the injection bag 90 with the filler injection tube 83 inserted therein.

  Further, the metered and kneaded filler 91 is introduced into the grout pump 86, and the tip of the filler injection tube 83 is exposed from the end opening 90a of the injection bag 90 on the arrival shaft 420b side, so that the filler injection tube 83 is exposed. Then, the filling material 91 is discharged and the state of the filling material 91 is confirmed. Further, the discharge amount of the filler 91 is adjusted by the flow meter 85 so as to have a predetermined injection speed. After the adjustment is completed, the filler injection pipe 83 is slightly pulled out to the start shaft 420a side, and the end opening 90a on the arrival shaft 420b side is tied to close the injection. Further, the end portion of the half guide pipe 41 on the side of the reaching vertical shaft 420b is not illustrated so that the injection bag 90 into which the filler 91 has been injected does not come out of the half guide pipe 41 on the side of the vertical shaft 420b. Hold it with a holding plate.

After completion of such primary injection preparation, the filling material 91 is injected into the injection bag 90 at the adjusted predetermined injection speed and the injection control pressure or less (step s4).
Specifically, the grout pump 86 is operated to inject the filler 91 from the filler injection pipe 83, and the injection bag 90 is inflated by the injected filler 91, and the inner surface 41 a of the injection bag 90 and the half guide pipe 41. When the pressure of the pressure control hose 81 sandwiched between the two exceeds the injection control pressure, the grout pump 86 is stopped (see FIG. 7B), the filler injection pipe 83 is pulled out by a predetermined length, and the filler 91 Resume injection.

  When the injection of the filler 91 up to a predetermined injection control pressure and the extraction of the filler injection pipe 83 after stopping the injection are repeated, the length of the injection pipe constituted by connecting the filler injection pipe 83 is extracted. Remove one injection tube.

  In this way, injection of the filler 91 and withdrawal of the filler injection pipe 83 after stopping the injection are repeated for the entire extension of the injection bag 90, and the filler injection pipe 83 is placed on the start shaft 420 a side of the injection bag 90. Pull out from the end opening 90a and tie the end opening 90a to complete the primary injection. As a result, as shown in FIG. 7B, most of the half cavity H can be filled with the filler 91 injected into the injection bag 90.

  Then, curing is performed until the filling material 91 injected into the injection bag 90 is cured (step s5), and the grout material is injected into the fitting joint 151 that is fitted (step s6). In step s1, a boundary portion on the inner side of the connecting portion of the connecting joint 151 is water-stop coated from the inside of the square steel element 150, and a boundary on the half guide pipe 41 side in the connecting portion of the connecting joint 151 is provided. Since the portion is closed by the injection bag 90 into which the filler 91 is injected, the grout material to be injected into the fitting joint 151 that is fitted is prevented from leaking, and the grout is reliably injected. (See FIG. 8A).

  After the grout material injected into the coupling joint 151 in step s6 is cured, the unfilled space R formed between the injection bag 90 and the pipe inner surface 41a of the half guide pipe 41 is filled by the pressure management hose 81. Preparation for secondary injection is performed (step s7). In this secondary injection preparation, the water 81a inside the pressure management hose 81 is drained, and the hose body 81b is drawn out to the reach shaft 420b side, and the unfilled space R formed between the injection bag 90 and the pipe inner surface 41a is drawn into the unfilled space R. The filler injection pipe 83 for secondary injection is inserted so that the tip side is on the arrival shaft 420b side (see FIG. 8B). Further, the end portion of the unfilled space R on the arrival shaft 420b side is closed, and a filling confirmation valve is set on the end portion.

  In the secondary injection (step s8) in which the unfilled space R is filled with the filling material 91, the filling material injection pipe 83 is pulled out while injecting the filling material 91 with quantitative control while confirming the filling with the valve for filling confirmation. The unfilled space R is filled with the filler 91.

  Since the area of the pipe inner surface 41a exposed in the unfilled space R is smaller than the contact area between the injection bag 90 and the pipe inner surface 41a, the filler 91 injected into the unfilled space R becomes the half guide pipe 41. The pressure exerted is reduced. Therefore, even if the filling material 91 injected into the unfilled space R is injected based on the quantitative control, the half guide pipe 41 is pushed up by the filling material 91 filling the unfilled space R, and the ground surface has a ground surface. There is no risk of bulging.

  In this manner, a fixed amount of filler 91 is injected into the unfilled space R, and when the secondary injection in step s8 is completed, the unfilled space R on the start shaft 420a side is closed and the unfilled space R is filled. The cured filling material 91 is cured until it is cured (step s9), and when it is cured to a predetermined strength, as shown in FIG. 4B, a half space that is surrounded by the half guide pipe 41 and the flange plate 152 is formed. The filling of the split cavity H with the filler 91 is completed.

  After such a filling method is completed, concrete is filled into the internal space 155 and the connecting space 156 of the square steel element 150, the internal space 300b surrounded by the square steel element 150 is excavated, and an underground underground structure is obtained. Complete 300.

  Thus, in the above-mentioned filling method, in order to fill the half-cavity H surrounded by the half guide pipe 41 and the flange plate 152 that are long in the horizontal direction in the natural ground 400 with the curable filling material 91. The filling material 91 is used by using a guide pipe filling device 80 including an infusion bag 90 that allows the filling material 91 to be injected, a pressure management hose 81, a water pressure gauge 82 that detects the pressure of the water 81a, and a grout pump 86. An infusion bag 90 that allows the infusion of the half guide pipe 41 is disposed along the longitudinal direction X of the half guide pipe 41, and between the infusion bag 90 and the pipe inner surface 41a along the longitudinal direction X of the half guide pipe 41. The pressure management hose 81 that transmits the pressure between the injection bag 90 and the pipe inner surface 41a at least in the longitudinal direction X is disposed, and the pressure control hose 81 controls the pressure while controlling the pressure by the pressure management hose 81. In order to inject the filler 91 sequentially from the arrival shaft 420b side to the start shaft 420a side, even if the filling distance is long, that is, the distance in the longitudinal direction X of the half cavity H is long, The long halved cavity H formed in a substantially horizontal direction can be filled with the curable filling material 91 with accurate pressure control.

  Specifically, along the longitudinal direction X of the half guide pipe 41 between the infusion bag 90 disposed along the longitudinal direction X of the half guide pipe 41 and the pipe inner surface 41a forming the half cavity H, Since the pressure management hose 81 for transmitting the pressure between the injection bag 90 and the pipe inner surface 41a in the longitudinal direction X is disposed, the actual pressure at which the injected filler 91 presses the pipe inner surface 41a through the injection bag 90 is a pressure. It is transmitted by the management hose 81.

  Therefore, the filler injection pipe for feeding out the filler 91 by sequentially injecting the filler 91 from the arrival shaft 420b side to the start shaft 420a side of the injection bag 90 while controlling the pressure by the pressure by the pressure management hose 81. Regardless of the filling distance affected by the pressure loss due to 83 pipe resistance, the filling material 91 can be filled into the half-cavity H based on accurate pressure management. Therefore, there is no risk of unfilling of the filling material 91 due to insufficient pressure, or the rise of the ground surface due to excessive pressure, and the half cavity H can be filled safely.

  Further, the pressure management hose 81 is constituted by the water 81a and the elongate hose body 81b that allows the water 81a to be sealed and has water on the start shaft 420a side of the hose body 81b. By providing the water pressure gauge 82 that detects the pressure of 81a, it is possible to fill the half-cavity H with the filler 91 while accurately controlling the pressure with a simpler structure. Specifically, the pressure management hose 81 is composed of the water 81a and the sealing of the water 81a and is composed of a long hose body 81b having flexibility. And less time to place. Therefore, the filler 91 can be filled into the half cavity H while accurately controlling the pressure.

  In addition, in order to arrange | position the half-cavity H long in the substantially horizontal direction, the pressure management hose 81 comprised with the elongate hose body 81b which accept | permits the water 81a and the water 81a, and has flexibility. For example, the influence of the water pressure which acts when arranged in the half cavity H in the vertical direction or the inclination direction is small, and accurate pressure management can be performed.

  Further, after the filler 91 injected into the injection bag 90 is cured, the water 81a of the pressure management hose 81 and the filler 91 are replaced, that is, the unfilled space R after the pressure management hose 81 is removed is filled with the filler. By filling with 91, the half cavity H can be more reliably filled with the filler 91. Specifically, even if the filling material 91 is injected into the injection bag 90, the unfilled space R for the pressure management hose 81 composed of the hose body 81b and the water 81a remains in the half cavity H. By filling this unfilled space R with the filling material 91, the filling rate by the filling material 91 inside the half cavity H can be improved, and the filling can be performed more reliably.

  In addition, since the contact area of the pressure control hose 81 and the pipe inner surface 41a constituted by the hose body 81b and the water 81a is smaller than the contact area of the injection bag 90 into which the filler 91 is injected and the pipe inner surface 41a, the filler 91 As compared with the pressure exerted on the pipe inner surface 41a through the infusion bag 90, the filler 91 injected into the gap of the pressure management hose 81 comprising the hose body 81b and the water 81a is applied to the pipe inner surface 41a. Since the applied pressure is smaller, there is no risk of the ground surface rising due to excessive pressure, and the half cavities H can be filled safely.

  Further, the natural ground 400 between the two circular guide pipes 40 is cut with a wire saw 163 passing through each of the circular guide pipes 40 together with the opposing portion of the circular guide pipe 40, and the circular guide pipe 40. After the flange plate 152 is inserted into the cut portion cut by the wire saw 163, the half cavity H surrounded by the inserted flange plate 152 and the circular guide pipe 40 is filled as described above. By filling with the filler 91 by the construction method, the ground 400 between the two circular cross-section guide pipes 40 is cut with the wire saw 163, and the flange plate 152 is efficiently attached to the cut portion cut with the wire saw 163. While being inserted, it was surrounded by the inserted flange plate 152 and the circular cross-section guide pipe 40 remaining on the natural ground 400 side. The split cavity H, without being affected by the filling distance, can be safely filled with a filler 91.

  Furthermore, in order to construct the underground underground structure 300 by inserting a square steel element 150 having a closed cross-sectional shape having a flange plate 152 at the upper portion into the ground 400 and excavating the inside of the square steel element 150. , A connecting joint 151 of the traveling direction X that connects the square steel element 150 in a direction crossing the traveling direction X, the connecting joint 151 is disposed inside the circular guide pipe 40 in section, and the flange plate 152 is The structure is such that the square steel element 150 protrudes forward from the front end in the insertion direction, and after the filler 91 injected into the injection bag 90 disposed in the half cavity H is hardened, the grout material is placed inside the connection joint 151 in the connected state. For example, when the square steel element 150 is inserted immediately below the track 200, the front end of the square steel element 150 in the insertion direction is inserted. Since the flange plate 152 projecting forward can be inserted in advance into the ground cut by the wire saw 163, the influence of the ground stress release due to excavation or the like for inserting the square steel element 150 is applied to the track 200 immediately above. Without reaching, the square steel element 150 can be inserted. Further, the half cavity H surrounded by the inserted flange plate 152 and the circular guide pipe 40 remaining on the natural mountain 400 side can be safely filled with the filler 91 without being affected by the filling distance. .

  Further, after the filling material 91 injected into the injection bag 90 is cured, the grout material is injected into the connection joint 151 in the connected state. The grout can be reliably injected into the enclosed space without leakage of the grout material to be injected into the connected joint 151 in the connected state. Therefore, the force acting on the square steel element 150 can be reliably transmitted to the square steel element 150 connected in the direction intersecting the traveling direction X by the connecting joint 151.

  In the above-described embodiment, the circular cross-section guide pipe 40 inserted into the natural ground 400 is cut together with the natural ground 400 by the wire saw 163, and the square steel element 150 is inserted below the track 200 so as to cross the underground structure. Although the object 300 is constructed, the cutting target portion to be cut with the wire saw 163 in the circular cross-section guide pipe 40 inserted into the natural ground 400 is cut with the tube cutting jig 101, and then the circular cross-section guide pipe 40 is cut with the wire saw 163. The underground structure 300 may be constructed by cutting and inserting a square steel element 150 below the track 200.

  Specifically, as shown in FIG. 11, which is an explanatory view of a cutting edge 160 according to another embodiment, the front of each rotary pulley 163 a has a configuration substantially similar to that of the moving roller portion 130 of the tube cutting jig 101. The constructed blade edge moving roller portion 130a is fixed, and a tube cutting jig 101 is disposed further forward.

  The tube cutting jig 101 includes a cutting cutter 112 having a rotary cutting blade 114 at the rear of the traveling direction X, a moving roller unit 130 provided before and after the traveling direction X of the cutting cutter 112, and a forward movement in the traveling direction X. It is comprised with the tow wire 135 connected to the roller part 130. FIG.

  The tow wire 135 is connected to a towing winch (not shown) disposed in front of the traveling direction X of the circular guide pipe 40 (hereinafter referred to as a reaching side), and reaches the cutting cutter 112 by winding the towing winch. Tow to the side.

  The cutting cutter 112 is composed of an air ratchet that rotates the rotary cutting blade 114 by air pressure, but a baby sander that is rotated by electricity, a hydraulic sander that is rotated by a hydraulic motor, or the like may be used.

  The rotary cutting blade 114 of the cutting cutter 112 in the tube cutting jig 101 cuts the planned cutting portion of the wire saw 163, adjusts the position so as to form a cutting slit, and adjusts the thickness of the thick portion of the circular guide pipe 40 in cross section. Cut about 30%.

  Further, in the circular cross-section guide pipe 40, the tube cutting jig 101 is inserted into the circular cross-section guide pipe 40 and is pulled to the reaching shaft 420b by the pulling wire 135 connected to the front, but the rotary pulley 163a is described above. As described above, the blade moves to the reaching shaft 420b along with the cutting edge 160 towed to the reaching shaft 420b by the primary pulling wire, and the cutting point by the wire saw 163 is accurately cut by the rotary cutting blade 114, and the cutting slit Can be formed.

  The construction sequence of the element insertion method using the blade edge 160 when the tube cutting jig 101 configured in this way is used in addition to the above-described construction method when the pipe cutting jig 101 is not used. The pipe cutting jig 101 and the cutting edge 160 attached to the square steel element 150 are set to the pipe 40, and the tow wire 135 inserted through the circular guide pipe 40 is first towed from the arrival shaft 420b side. The cutting jig 101 is moved in the traveling direction X. At this time, with the rotary cutting blade 114 of the tube cutting jig 101, the inner peripheral surface of the cutting portion of the wire saw 163 that cuts the circular cross-section guide pipe 40 at the rear is cut to form a cutting slit.

  Subsequently, the cutting edge 160 is pulled by the primary pulling wire from the reach shaft 420b side, and the cutting slit cut by the rotary cutting blade 114 is cut by the wire saw 163 together with the ground mountain 400 between the circular guide pipes 40 in cross section. Move while. Thereafter, the insertion of the square steel element 150 is completed in the same manner as described above.

  In this way, the natural ground 400 between the two cross-sectional circular guide pipes 40 is cut with the wire saw 163 passing through each of the cross-sectional circular guide pipes 40 together with the opposing portion of the cross-sectional circular guide pipe 40, and the cross-sectional circular guide In order to insert the flange plate 152 into the cut portion cut in the traveling direction X of the pipe 40 and cut by the wire saw 163, the wire saw 163 is used for a blade that travels in the traveling direction X inside the circular guide pipe 40 in cross section. A moving roller unit 130a is provided, and the moving roller unit 130 moves in the moving direction X in the tube cross section of the circular guide pipe 40 in front of the moving direction X of the wire saw 163. A cutting cutter 1 that presses the rotating cutting blade 114 to be driven against the inner surface of the tube to cut the inner surface of the tube in the traveling direction X. 2 is disposed, and the tube cutting jig 101 cuts the planned cutting portion of the circular guide pipe 40 having a cross section cut by the wire saw 163, and then cuts with the wire saw, the above-mentioned In addition to the effect when the tube cutting jig 101 is not used, the cutting load acting on the wire saw 163 when the circular guide pipe 40 is cut can be reduced. Accordingly, the circular guide pipe 40 can be cut with the wire saw 163 with high accuracy, and the durability of the wire saw 163 can be improved.

  Moreover, after cutting the circular guide pipe 40 with the wire saw 163 together with the ground mountain 400, a plate material such as a laid iron plate is inserted into the cut portion of the wire saw 163, and the lower portion of the plate material is supported while supporting the inserted plate material. While excavating, the underground crossing structure 300 may be constructed. Even in this case, the above-mentioned filling method and the guide pipe filling device 80 are used for the cavity surrounded by the half guide pipe 41 on the natural ground 400 side of the circular guide pipe 40 divided by the plate material and the plate material. Thus, the pressure can be accurately controlled and the curable filling material 91 can be filled. In this case as well, the tube cutting jig 101 may be used in combination, and when the tube cutting jig 101 is used together, the circular guide pipe 40 can be cut with the wire saw 163 with high accuracy and the durability of the wire saw 163 is also improved. Can be improved.

  Furthermore, without constructing the underground crossing structure 300, for example, the cavity formed in the natural ground 400 is accurately pressure-controlled by using the above-described filling method and the guide pipe filling device 80, so that the hardening type It can be filled with a filler 91. At this time, if the inclination angle is such that the injected filling material 91 does not flow down according to the fluidity such as the slump value and flow value of the filling material 91, the pressure can be accurately controlled even if it is not horizontal. While filling, it can be surely filled.

  Moreover, although the cement-type grout material was used for the filler 91, you may use a resin-type grout material. Further, the pressure management hose 81 is configured by enclosing the water 81a in the hose body 81b. However, the pressure management hose 81 is not limited to the water 81a, and there is little volume change due to the pressure. Further, a liquid or gel-like body having a small volume change due to temperature is more preferable. Further, instead of the pressure management hose 81, the injection pressure of the filler 91 may be managed based on detection results from a plurality of pressure sensors arranged at predetermined intervals in the traveling direction X of the half guide pipe 41.

  Further, in the secondary injection in step s8, after the filler 91 injected into the injection bag 90 is cured, the pressure management hose 81 is pulled out, and the unfilled space R is filled with the filler 91 by the filler injection pipe 83 for secondary injection. Although it is filled, the water 91a alone may be extracted from the hose body 81b without filling the pressure management hose 81, and the filling material 91 may be filled inside the hose body 81b. Further, the filler 91 to be injected into the injection bag 90 and the filler 91 for secondary injection may be the same grout material or different grout materials.

In the correspondence between the configuration of the present invention and the above-described embodiment, the cavity of the present invention corresponds to the half cavity H,
Similarly,
The longitudinal direction corresponds to the longitudinal direction X, the insertion direction X, or the traveling direction X,
The cavity wall corresponds to the tube inner surface 41a,
The pressure transmission means corresponds to the pressure management hose 81,
The tip side corresponds to the reach shaft 420b side,
The base end side corresponds to the start shaft 420a side,
The fluid corresponds to the water 81a,
The enclosed hose corresponds to the hose body 81b,
The pressure detection means corresponds to the water pressure gauge 82,
The buried pipe corresponds to the circular guide pipe 40 in section,
The plate material corresponds to the flange plate 152,
The top plate corresponds to the flange plate 152,
The element corresponds to the square steel element 150,
The joint means corresponds to the coupling joint 151,
The filling device corresponds to the guide pipe filling device 80,
The filler injection means corresponds to the grout pump 86,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

40 ... Circular guide pipe 41 ... Half guide pipe 41a ... Pipe inner surface 80 ... Guide pipe filling device 81 ... Pressure management hose 81a ... Water 81b ... Hose body 82 ... Water pressure gauge 86 ... Grout pump 90 ... Infusion bag 91 ... Filler 150 ... Square steel element 151 ... Connection joint 152 ... Flange plate 163 ... Wire saw 400 ... Ground mountain 420a ... Starting shaft 420b ... End shaft H ... Half cavity X ... Longitudinal direction / traveling direction

Claims (6)

A filling method in which a cavity that is long in the horizontal direction in the ground is filled with a curable filler,
An infusion bag that allows infusion of the filler is disposed along the longitudinal direction of the cavity, and
Between the infusion bag and the cavity wall forming the cavity, pressure transmission means for transmitting pressure between the infusion bag and the cavity wall at least in the longitudinal direction is disposed along the longitudinal direction of the cavity. And
A filling method of injecting the filler sequentially from the distal end side to the proximal end side of the infusion bag while controlling the pressure by the pressure by the pressure transmission means. The pressure transmission means;
It is composed of a fluid and a long sealed hose that allows the fluid to be sealed and has flexibility,
The filling method according to claim 1, further comprising pressure detecting means for detecting the pressure of the fluid on the proximal end side of the sealed hose. The filling method according to claim 2, wherein the fluid and the filler are replaced after the filler injected into the injection bag is cured. The ground between the two buried pipes was cut with a wire saw passing through each of the buried pipes together with the opposing portion of the buried pipe, proceeded in the longitudinal direction of the buried pipe, and cut with the wire saw. In the plate material insertion method of inserting the plate material at the cutting location,
After inserting a board | plate material in the cutting | disconnection location cut | disconnected by this wire saw, let the space enclosed by the inserted said board | plate material and the said buried pipe be a cavity long in the said substantially horizontal direction in any one of Claims 1 thru | or 3. The board | substrate material insertion construction method with which it fills with the said filler by the filling construction method of description. An element insertion method in which an element with a closed cross-sectional shape having a top plate at the top is inserted into a natural ground and the inside of the element is excavated
The element is connected in a direction crossing the longitudinal direction, and provided with a joint means in the longitudinal direction, and the joint means is arranged inside the buried pipe so as to be connectable,
The top plate is configured to protrude forward from the front end of the element insertion direction,
The top plate is the plate material in the plate material insertion method according to claim 4,
An element insertion method in which a grout material is injected into the joint means in a connected state after the filler injected into the injection bag is cured. A filling device that fills a substantially long horizontal cavity in the ground with a curable filler,
An infusion bag disposed along the longitudinal direction of the cavity and allowing infusion of the filler;
A long sealed hose that is arranged between the cavity wall forming the cavity and the infusion bag along the longitudinal direction of the cavity, allows the fluid to be sealed, and has flexibility;
A pressure detection means for detecting the pressure of the fluid, provided on the proximal end side of the sealed hose;
A filling device comprising: a filling material injecting means for sequentially injecting the filling material from the distal end side to the proximal end side of the infusion bag while controlling the pressure by the pressure detected by the pressure detecting means.

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