Downward segment descending control system and vertical hole construction method using the same

Abstract

The present invention relates to a downward segment descent control system and a vertical hole construction method using the same. The downward segment descent control system stacks multiple layers of segments to form the wall of a vertical hole, and is composed of a segment controller, a fixing tool, a steel strand, and a stopper. The segment controller is arranged at the entrance of the vertical hole and can be raised and lowered by a control unit. The fixing tool is installed on the segment. The steel strand interconnects segment shoes, the fixing tools of the stacked segments, and the segment controller. The fastener is fastened to the steel strand.

Description

Technical Field

[0001] The present invention relates to a descent control system for pipe segments used in constructing vertical holes, and more specifically, to a downward pipe segment descent control system and a vertical hole construction method using the same, wherein pipe segments are stacked in multiple layers to form the wall of the vertical hole, and the system is composed of a pipe segment controller, a fixing tool, a steel strand, and a stopper. The pipe segment controller is arranged at the entrance of the vertical hole and can be raised and lowered by a control unit, the fixing tool is installed on the pipe segment, the steel strand connects the pipe segment shoe with the fixing tool and the pipe segment controller of the stacked pipe segments, and the stopper is fastened to the steel strand. Background Art

[0002] Generally, when forming underground facilities such as subways, underground tunnels, underground multi-storey car parks, underground pipelines, vents, emergency passages, power sockets, and communication ports, the ground is excavated vertically downward from the surface into a circular shape, and then concrete is poured into a template installed in the vertical hole to form a concrete wall. Recently, with the introduction of the downward segment vertical hole construction method, that is, connecting multiple arched blocks to form a ring segment and stacking the formed segments on the excavation surface to construct the vertical hole, the construction method has been improved.

[0003] If the lower surface of the pipe segment is excavated when constructing a vertical hole, the weight of the stacked pipe segments generates a vertical downward sinking force, and the stacking of the upper end of the new pipe segment and the excavation of the foundation below the vertical hole are repeated until the depth of the vertical hole to be constructed is reached.

[0004] Each block constituting the segment is composed of a prefabricated concrete block manufactured in advance or a caisson that acts as a concrete formwork. When constructing vertical holes of the segment formed by stacking and connecting the blocks composed of the caisson, a process of pouring and curing by injecting concrete into the caisson can be additionally performed.

[0005] When constructing downward-type vertical holes for pipe segments using the deadweight of the pipe segments, if the soil constituting the excavation foundation is a high-friction foundation such as clay, the friction between the outer wall of the sinking pipe segment and the excavation surface is greatly increased, and the pipe segment cannot descend evenly. The uneven descent of the pipe segment becomes the cause of tilted sinking.

[0006] Therefore, the following construction method is being applied: a support structure is set around the vertical hole entrance, and one or more pressurizers are set on the support structure to pressurize the upper ends of the stacked segments, thereby guiding the stacked segments to descend smoothly through the self-weight of the segments and the pressurizing force.

[0007] However, when constructing downward-type segment vertical holes by pressurizing the segments with the pressurizer as described above, in the process of excavating the vertical holes to lower the segments, if a soft soil foundation is formed only on a portion of the excavation surface or over-excavation is caused at a portion of the excavation points, the segments may excessively tilt and settle while they descend relatively quickly on the soft soil foundation or at the over-excavation points. Because of the excessive tilt and settlement of the segments at the lower ends, the walls of the segments may tilt or adjacent upper and lower segments may open or shift, which may lead to misalignment between the segments.

[0008] At this time, the upper end of the segment that has not tilted or sunk excessively is pressurized, and the inclination of the segment can be partially corrected. However, if the number of stacked segments increases, the pressing force of the pressurizing machine is dispersed to the surrounding segments through the stacked segments at the lower end, and the inclination of the segment cannot be corrected normally, thereby reducing the structural stability of the constructed vertical holes and the air tightness between the connecting surfaces of the segments, making water leakage more likely to occur.

[0009] In order to solve the problems mentioned above, the construction method of the underground vertical hole structure disclosed in Korean Patent Gazette No. 10-1025367 (authorization date: 2011.03.21) proposes the following construction method: a support unit is installed between the segment shoe that protects the lowermost end surface of the stacked segments during the descent of the segments and the lowermost segment shoe, a traction unit is set on the support unit, and a ground anchor pre-buried in the foundation of the vertical hole excavation surface is connected to the end of the traction unit, and then the traction unit is operated to control the inclination of the lower end of the stacked segments.

[0010] However, in the underground vertical hole structure construction method, it is necessary to pre-embed ground anchors in the foundation of the vertical hole excavation surface, and the work of removing the buried ground anchors before performing the vertical hole excavation for lowering the pipe segment and re-embedding the ground anchors after the excavation is completed is repeatedly performed, thereby delaying the construction time.

[0011] In addition, if the pipe segments are tilted, the stacking surfaces between the pipe segments will open or be eccentric, which may cause misalignment between the stacked pipe segments. However, even if the horizontality of the pipe segment at the lowermost end is corrected by a traction unit according to the underground vertical hole structure construction method, the offset between the stacked pipe segments cannot be corrected. Moreover, during the excavation of the vertical hole, each time the lower end pipe segment excessively tilts and settles, the stacked pipe segments open up and the eccentricity between the pipe segments gradually increases, which has the problem of reducing the structural stability of the constructed vertical hole.

[0012] (Prior art literature)

[0013] (Patent Document)

[0014] (Patent Document 1) Korean Patent Publication No. 10-1025367 (grant date: 2011.03.21) Summary of the invention

[0015] Problem to be solved

[0016] The purpose of the embodiment of the present invention is to construct a pipe segment descent control system that can ensure the stability of the pipe segment descent operation under various soil conditions when performing vertical hole construction by repeatedly working through various steps such as digging vertical holes and lowering pipe segments, guide the pipe segments to descend accurately, improve the structural fragility that occurs during the downward pipe segment vertical hole construction, and thereby further improve the completion of the downward pipe segment vertical hole construction method.

[0017] The purpose of the embodiments of the present invention is to prevent the segments from tilting and sinking when over-excavation occurs or a soft soil foundation is formed on a part of the excavation surface during the vertical hole construction process using the downward segment vertical hole construction method, thereby preventing the segment wall from tilting or the opening between adjacent upper and lower segments, and preventing the segments from misaligning due to offset, thereby improving the structural stability of the constructed vertical hole and the air tightness of the connection between the segments.

[0018] In an embodiment of the present invention, a control system is established to guide the precise descent of the segments during the vertical hole construction process according to the downward segment vertical hole construction method, so as to more easily and quickly realize the correction process of the inclined settlement occurring during the descent of the segments.

[0019] The purpose of an embodiment of the present invention is to provide a segment control system, which can correct or control the misalignment between the segments caused by the inclination of the segment walls or the opening and offset between adjacent upper and lower segments when the segments are lowered after the multi-layer segments are stacked and the vertical holes are constructed by a downward segment vertical hole construction method with a high depth.

[0020] Means of solving the problem

[0021] According to an embodiment of the present invention, a plurality of segment blocks consisting of arch-shaped blocks or caissons are connected into an annular segment, and multiple layers of the segment are stacked on the upper surface of an annular segment shoe inserted into an excavation surface of a circular cross-section to form a vertical hole wall. The segment controller is composed of a segment controller, an upper fixing tool, a fixing tool, a second fixing hole, a third fixing hole, a plurality of steel strands, an upper end stopper and a lower end stopper. The segment controller is composed of a lower support frame arranged at the entrance of the vertical hole and an upper support frame connected to each lower support frame by a control unit so as to be liftable; the upper fixing tool is directly or indirectly installed on the upper support frame of the segment controller; the fixing tool is provided with two or more for each segment , forming a predetermined angle on the surface of the segment block, and forming more than one first fixing hole respectively; the second fixing holes are formed in the upper fixing tool to have the same number as the sum of the first fixing holes formed in each fixing tool; the third fixing holes are formed in the segment shoe with the same number and configuration spacing as the first fixing holes formed in each fixing tool; the multiple steel strands pass through the first, second and third fixing holes at corresponding positions in the vertical direction to interconnect the segment shoe and the fixing tools and segment controllers of the stacked segments; the upper end stop is fastened to each steel strand to be located above the second fixing hole; the lower end stop is fastened to each steel strand to be located below the third fixing hole.

[0022] Effects of the Invention

[0023] According to an embodiment of the present invention, the segments are fixed to the steel strands by means of fixing tools installed on the segment shoes, thereby preventing the segments from opening and tilting due to excessive settlement or tilted settlement of the segments during the process of lowering the segments in excavating vertical holes.

[0024] According to the embodiments of the present invention, when the segment shoe is tilted, the segment can be lifted and lowered by controlling the fixing tool and the steel strand connected to the segment controller to realign the tilted segment.

[0025] According to an embodiment of the present invention, a reaction force of the same magnitude as the tensile force of the steel strand is generated on the upper surface of the segment through the support unit of the segment controller, thereby having the effect of reducing the magnitude of the torque acting on the segment controller.

[0026] According to an embodiment of the present invention, the support unit is connected via the first hinge with a changeable connection angle, thereby having the effect of supporting the pipe segment even when the vertical configuration directions between the pipe segment and the support unit are inconsistent.

[0027] According to an embodiment of the present invention, the segment controller can be moved horizontally by a horizontal moving unit, so that the positions of the fastening holes between the segment controller and the fixing tool are consistent, which has the effect of preventing damage caused by overloading of the steel strand or the upper end stop.

[0028] According to an embodiment of the present invention, the inclination of the pipe segment detected by the eccentricity detector reflects the correction value used to compensate for the inclination, and controls the lifting and lowering of the control unit of each pipe segment controller, thereby achieving the effect of more precise alignment of the pipe segment.

[0029] According to an embodiment of the present invention, the correction tools of the downward segment descent control system are multiplexed through the segment controller, the fixing tool and the pressurizer, which has the effect of establishing a more accurate segment control system.

[0030] According to an embodiment of the present invention, the fixing tool for fixing the steel strands is composed of two parts that can be combined and separated, thereby having the effect of correcting the opening between the pipe segments during the vertical hole construction and recovering the steel strands after the vertical hole construction is completed.

[0031] According to an embodiment of the present invention, the protruding height of the fixing tool is minimized by forming a fixing tool installation groove on the surface of the segment block, which has the effect of minimizing the interference with the vertical hole excavation surface when the segment is lowered.

[0032] According to an embodiment of the present invention, the connection direction between the steel strand and the segment shoe is converted by forming a first pulley on the segment shoe, thereby achieving an effect of easily separating the segment shoe and the steel strand.

[0033] According to an embodiment of the present invention, a pressure booster is arranged on the guide wall, so that when the soil constituting the foundation is composed of clay or the like, or when different strength differences appear in different parts of the foundation in the interval where the stacked segments are maintained in a fixed state during blasting construction for excavating rocks, it has the effect of guiding the segments to descend evenly.

[0034] According to an embodiment of the present invention, during the excavation construction of the internal surface of the vertical hole constructed in stages, the auxiliary controller is used to prevent uneven settlement of the segments. When the excavation construction is completed, the segments are automatically guided to descend evenly through the automatic control of the auxiliary controller, and the magnitude of the reaction force of each part of the lower surface of the segment shoe is adjusted, thereby having the effect of more effectively correcting the inclination or opening of the stacked segments. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a diagram showing the shape of a segment formed by connecting a plurality of segment blocks;

[0036] Figure 2 A plan view showing a downward segment descent control system according to an embodiment of the present invention;

[0037] Figure 3 It is shown along Figure 2 A vertical cross-sectional structure diagram of the downward segment lowering control system along line A-A';

[0038] Figure 4 1. It is a diagram showing the shape and arrangement structure of a segment controller of a downward segment descent control system according to an embodiment of the present invention;

[0039] Figure 5 As along Figure 3 The cross-sectional structure of the segment lowering control system on line BB' is a diagram showing the shape and installation structure of the fixing tool set on the segment;

[0040] Figure 6 It is shown along Figure 5 A diagram of a vertical cross-sectional structure of a fixing tool arranged on a segment at line C-C';

[0041] Figure 7 is a diagram showing the shape of a segment controller to which a support unit according to an embodiment of the present invention is attached;

[0042] Figure 8 A diagram showing a process of aligning an upper fixing tool of a segment controller and a fixing tool installed on a segment by attaching a lower supporting frame of a horizontal moving unit according to an embodiment of the present invention;

[0043] Fig. 9 is a diagram showing the shape of a segment controller to which an eccentricity detector according to an embodiment of the present invention is attached;

[0044] Fig.10 is a diagram showing a process of setting a fixing tool on a pipe segment forming a fixing tool installation groove according to an embodiment of the present invention;

[0045] Fig.11 is a diagram showing a cross-sectional structure of a segment shoe to which a pulley according to an embodiment of the present invention is attached;

[0046] Fig.12 is a diagram showing the direction of tensile force acting on the actions of the control unit and the support unit when the segment controller of the embodiment of the present invention is running;

[0047] Fig.13 is a diagram showing the structure of a film controller to which a reel according to an embodiment of the present invention is attached;

[0048] Fig.14 is a diagram showing a plan view of a downward segment lowering control system to which a pressurizer according to an embodiment of the present invention is attached;

[0049] Fig.15 It is shown along Fig.14 A vertical cross-sectional structure of a downward segment lowering control system with an additional pressurizer on line D-D';

[0050] Fig.16 is a diagram showing an adjustment angle of a pressurizing unit of a pressurizing device to which a hinge according to an embodiment of the present invention is attached;

[0051] Fig.17 is a diagram showing a plan view of a downward segment lowering control system to which an auxiliary controller according to an embodiment of the present invention is attached;

[0052] Fig.18 It is shown along Fig.17 A diagram of the vertical cross-sectional structure of the downward segment lowering control system with an additional auxiliary controller on line E-E';

[0053] Fig.19 is a diagram illustrating a segment alignment control process of an operation of an auxiliary controller according to an embodiment of the present invention.

[0054] Description of Reference Numerals

[0055] 1: Vertical hole 2: Diversion wall

[0056] 10: Segment shoe 11: Third fixing hole

[0057] 12: First pulley 20: Segment

[0058] 21: Segment block 22: Fixing tool installation slot

[0059] 23: Fixing tool fastening hole 30: Steel strand

[0060] 31: Upper stopper 32: Lower stopper

[0061] 100: Segment controller 110: Upper support frame

[0062] 111: Upper fixing tool 112: Second fixing hole

[0063] 120: Lower support frame 121: Upper structure

[0064] 122: Lower structure 123: Horizontal moving unit

[0065] 130: control unit 140: first support frame

[0066] 150: second support frame 160: support unit

[0067] 170: First hinge 180: Scroll

[0068] 200: Fixing tool 210: Inside fixing tool

[0069] 220: Outer fixing tool 230: First fixing hole

[0070] 240: Fastening hole 300: Pressurizer

[0071] 310: Pressurized support frame 311: Vertical frame

[0072] 312: horizontal frame 320: pressurizing unit

[0073] 321: Second hinge 400: Eccentricity detector

[0074] 410: guide rod 411: second pulley

[0075] 420: Line 421: Heavy Object

[0076] 430: Reel 500: Auxiliary controller

[0077] 510: Fixing bracket 520: Auxiliary control unit DETAILED DESCRIPTION

[0078] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0079] The detailed description will be focused on the parts necessary for understanding the operation and effects of the present invention.

[0080] While describing the embodiments of the present invention, description of technical contents that are well known in the technical field to which the present invention belongs and have no direct relationship with the present invention will be omitted.

[0081] Accordingly, unnecessary descriptions are omitted in order to convey the gist of the present invention more clearly and without ambiguity.

[0082] In the description of constituent elements of the present invention, constituent elements having the same names may be denoted by different reference numerals depending on the drawings, and the same reference numerals may be denoted even in different drawings.

[0083] However, even in the case described above, it does not mean that the constituent elements have different functions according to the embodiments or have the same function in different embodiments. Instead, the function of each constituent element should be judged based on the description of each constituent element in the embodiment.

[0084] In addition, unless otherwise defined in the specification, the technical terms used in this specification should have the meanings generally understood by persons having ordinary knowledge in the technical field to which the present invention belongs, and should not be interpreted as overly generalized or overly narrow.

[0085] In addition, the singular expressions used in this specification also include the plural expressions unless otherwise stated in the text.

[0086] In the present application, the terms "compose" or "include" should not be interpreted as including all the various constituent elements or steps recorded in the specification, but should be interpreted as not including some of the constituent elements or steps, or may also include additional constituent elements or steps.

[0087] The downward segment descent control system of the present invention is described below.

[0088] In the present invention, the vertical hole 1 refers to a channel excavated vertically downward from the ground surface in order to form underground facilities such as subways, underground tunnels, underground multi-storey parking lots, or underground pipes, vents, etc. connected to the underground facilities. The wall of the vertical hole 1 is formed by stacking multiple layers of ring-shaped pipe segments 20 inside the excavation surface excavated for the construction of the vertical hole 1.

[0089] like Figure 1 As shown, the segments 20 are formed by connecting the side surfaces of the segment blocks 21. The segment blocks 21 are composed of arch-shaped blocks or caissons. The segment blocks 21 constituting a layer of the segments 20 can be fixed to each other by bent bolts or other fastening components.

[0090] When the pipe segment 20 is lowered by digging a vertical hole 1, in order to prevent uneven descent or opening and misalignment of the pipe segments 20 due to uneven settlement causing different descending speeds of different parts of the pipe segment 20 due to the strength difference of the excavated foundation, the downward pipe segment descent control system of the present invention includes a pipe segment controller 100, and the pipe segment controller 100 controls the stacking of the pipe segments 20 by lifting and lowering.

[0091] like Figure 2 and Figure 3 As shown, the segment controller 100 is installed on the upper surface of the entrance of the vertical hole 1. In the case of manufacturing the segment block 21 with precast concrete, due to the high weight of the segment 20, if the segment controller 100 is installed at the entrance of the vertical hole 1, the ground surface may be deformed or damaged. Therefore, a guide wall 2 is provided along the peripheral portion of the entrance of the vertical hole 1 as a structure for installing the segment controller 100. It is preferred that the segment controller 100 is installed on the upper portion of the guide wall 2. In the structure and construction method of the present invention described later, the guide wall 2 is provided at the entrance of the vertical hole 1, and the description is based on the premise that the segment controller 100 is installed on the upper portion of the guide wall 2.

[0092] In order to more effectively control the inclination of the segment 20 by controlling the descending speed of each part of the segment 20, two or more segment controllers 100 are installed on the upper surface of the guide wall 2 to form a predetermined angle. In order to more stably control the descent of the segment 20, it is preferably installed with three or more.

[0093] like Figure 4 As shown, the segment controller 100 is composed of a lower support frame 120 disposed on the upper surface of the guide wall 2 and an upper support frame 110 disposed on the upper part of the lower support frame 120. The upper support frame 110 and the lower support frame 120 are connected to each other through a control unit 130. An upper fixing tool 111 having one or more second fixing grooves 112 is installed on the upper support frame 110. The upper fixing tool 111 is directly installed on the upper support frame 110, or can be indirectly installed through other structures connected to the upper support frame 110.

[0094] The control unit 130 composed of a piston and a cylinder can extend or contract the length and raise or lower the upper support frame 110 by controlling the internal fluid pressure.

[0095] Multiple layers of segments 20 are stacked in the excavated vertical hole 1. Fixing tools 200 are installed on the inner or outer side surfaces of the arched segments 21 constituting each layer of the segments 20, so that the fixing tools 200 and the segment controllers 100 disposed on the upper part of the guide wall 2 form the same angle.

[0096] At this time, the arched inner side surface of the segment block 21 or segment 20 described in the present invention refers to the surface that contacts the hole (cavity) formed in the center of the stacked segments 20 when constructing the vertical hole 1, and the arched outer side surface of the segment block 21 or segment 20 refers to the surface that contacts the vertical surface of the excavated foundation when constructing the vertical hole 1. Figures 2 to 16 FIG. 2 shows an embodiment in which the fixing tool 200 is mounted on the outer side surface of the arcuate shape.

[0097] like Figure 5 As shown, the fixing tool 200 is configured to have an arch shape having the same curvature as the arch shape of the segment block 21 to which the fixing tool 200 is installed. When the fixing tool 200 is installed on the outer side of the arch shape of the segment 20, the inner side of the arch shape of the fixing tool 200 and the outer side of the arch shape of the segment 20 form the same curvature, and when the fixing tool 200 is installed on the inner side of the arch shape of the segment 20, the outer side of the arch shape of the fixing tool 200 and the inner side of the arch shape of the segment 20 form the same curvature, and a fixing tool fastening hole 23 is formed on the surface of the segment block 21 to which the fixing tool 200 is installed.

[0098] A fastening hole 240 is formed at a position corresponding to the position of the fastening hole 23 of the fixing tool formed to penetrate the inner side and the outer side of the fixing tool 200. The fastening member is fastened to the fastening hole 23 of the fixing tool through the fastening hole 240, and the fixing tool 200 is installed on the surface of the pipe segment 20 through the fastening member. One or more first fixing holes 230 are formed in the fixing tool 200, and the first fixing holes 230 penetrate in the vertical direction toward the vertical hole 1 when the fixing tool 200 is installed on the surface of the pipe segment 20.

[0099] During the process of lowering the pipe segments 20 by digging the vertical hole 1, even if a part of the excavation surface of the vertical hole 1 forms a soft foundation that may cause partial excessive tilting and settlement of the stacked pipe segments 20, the fixing tool 200 can be used to fix each layer of the pipe segments 20 individually with the steel strands 30 while maintaining the alignment of the stacked pipe segments 20, thereby preventing the pipe segments 20 from spreading and causing eccentricity between the pipe segments 20.

[0100] A segment shoe 10 is installed on the lower surface of the lowest segment 20 stacked inside the vertical hole 1 to prevent the lower surface of the lowest segment 20 from being damaged due to collision with the excavation foundation while lowering the segment 20 by its own weight when digging the vertical hole 1.

[0101] The segment shoe 10 supports the load of the segments 20 stacked on the upper portion and prevents damage due to the force acting from the excavation surface of the vertical hole 1. In order to save the cost required for manufacturing, it is preferably made of a metal material including steel.

[0102] One or more third fixing holes 11 are formed in the segment shoe 10. The first fixing holes 230 of the fixing tool 200 and the third fixing holes 11 of the segment shoe 10 are formed with the same number as the second fixing holes 112 formed in the segment controller 100. When the segment shoe 10 and the segment 20 are inserted into the vertical hole 1, it is preferred that the first fixing holes 230, the second fixing holes 112 and the third fixing holes 11 located at corresponding positions can be arranged on a straight line.

[0103] One or more steel strands 30 (prestressing strand) pass through the second fixing holes 112, the first fixing holes 120 and the third fixing holes 11 arranged on a straight line in sequence, and connect the segment shoe 10, the fixing tool 200 of the stacked segments 20 and the segment controller 100 to each other. The steel strands 30 are formed by twisting more than three steel wires.

[0104] An upper end stopper 31 is installed in the second fixing hole 112, and the upper end stopper 31 plays a braking role in controlling the locking or releasing of each steel strand 30 passing through the respective second fixing holes 112. The upper end stopper 31 fixes the steel strand 30 when excavating the bottom surface of the vertical hole 1, when blasting construction is used for excavating the bottom surface of the vertical hole 1, when stacking the segments 20, when installing the fixing tool 200, and when tightening the fixing tool 200 and the steel strand 30, so as to keep the segment shoe 10 and the segment 20 stopped. When the segment 20 is lowered, the upper end stopper 31 is separated from the steel strand 30 to release the fixed state of the steel strand 30 to lower the segment 20.

[0105] The lower end stopper 32 is fastened to each steel strand 30 passing through the third fixing hole 11 to be located at the lower portion of the third fixing hole 11 , thereby fixing and supporting the segment 20 stacked with the segment shoe 10 disposed on the upper portion of the lower end stopper 32 .

[0106] Then, as the stacking amount of the segments 20 increases as the vertical hole 1 is excavated, the moment acting on the control unit 130 caused by the tensile force transmitted to the segment controller 100 through the steel strand 30 may cause deformation or damage to the control unit 130. In order to prevent this phenomenon, the first support frame 140 connecting the upper support frame 110 and the lower support frame 120 to each other is integrally provided on the outer side of the control unit 130, or may be provided at a predetermined distance from the control unit 130.

[0107] The first support frame 140 is two slidably combined parts respectively connected to the upper support frame 110 and the lower support frame 120. When the upper support frame 110 is raised or lowered by the action of the control unit 130, it provides support force for the external force applied to the control unit 130 through the action of the torque and has the function of guiding the lifting direction of the upper support frame 110 through sliding action.

[0108] Then, the second support frame 150 is disposed between the upper support frame 110 and the lower support frame 120 at a predetermined distance from the first support frame 140. The second support frame 150, together with the first support frame 140, further strengthens the support force against the external force applied to the control unit 130 through the moment action. In order to maximize the support force against the external force, the control unit 130, the first support frame 140, and the second support frame 150 are preferably arranged in a straight line toward the center of the vertical hole 1.

[0109] At this time, in order to enable the segment controller 100 to perform a stable lifting action, bearings such as sliding bearings or roller bearings may be added to the sliding action parts of the first support frame 140 and the second support frame 150.

[0110] As described above, the upper fixing tool 111 may be indirectly installed through other structures connected to the upper support frame 110 , and either the first support frame 140 or the second support frame 150 may be other structures connected to the upper support frame 110 .

[0111] When the upper fixing tool 111 is installed on the first support frame 140 or the second support frame 150, the upper fixing tool 111 is formed in the upper component connected to the upper support frame 110 among the two components slidably connected up and down of the first support frame 140 or the second support frame 150. When the upper support frame 110 is raised and lowered by starting the control unit 130, the upper fixing tool 111 can be raised and lowered together with the upper fixing tool 111, and the pipe segment 20 can be lowered, fixed or aligned at the same time.

[0112] When the upper fixing tool 111 is installed on the first support frame 140 or the second support frame 150, compared with when the upper fixing tool 111 is formed on the side of the segment controller 100 and the upper fixing tool 111 is directly installed on the upper support frame 110, the position of the upper fixing tool 111 is lowered, making it easier for the staff to perform the work of connecting the steel strand 30 to the second fixing hole 112.

[0113] Then, among the two parts slidably connected up and down of the first support frame 140 or the second support frame 150, the upper fixing tool 111 can be additionally installed on the lower part connected to the lower support frame 120. When the fixed state of the pipe segment 20 used for digging the vertical hole 1 is maintained by the upper end stopper 31 installed on the upper fixing tool 111 installed on the lower part, the load of the supported pipe segment 20 can be more stably supported.

[0114] In addition, if Figure 7 As shown, the end of the upper support frame 110 in the direction vertical to the hole 1 can be extended to be located on the upper part of the stacked tube segments 20. The support unit 160 can be installed downwardly on the lower surface of the extended upper support frame 110.

[0115] The support unit 160 is composed of a piston and a cylinder, and can pressurize the upper surface of the uppermost segment 20 of the stack or release the connection with the upper surface of the segment 20 by controlling the internal fluid pressure to extend or contract the length. In order to correct the tilt of the stacked segments 20, the support unit 160 pressurizes the upper surface of the segment 20 when the segment controller 100 moves upward.

[0116] like Fig.12As shown, if the segment 20 is lifted by the extension control unit 130, the tensile force of the steel strand 30 generated by the load of the segment 20 acts on the upper support frame 110. By extending the support unit 160, the upper surface of the segment 20 is pressurized and a reaction force of the same magnitude as the tensile force of the steel strand 30 is generated, thereby reducing the torque acting on the segment controller 100.

[0117] Minimizing the step difference between the connecting parts of the upper and lower segments 20 that occurs in the process of stacking the segments 20 while pressurizing the upper surface of the uppermost segment 20 stacked by the support unit 160 can prevent the upper and lower segments 20 from opening. In order to smoothly correct the step difference between the segments 20, it is preferred to loosen part of the fastening between the fixing tool 200 and the steel strand 30 installed on the segment 20 where the step difference occurs.

[0118] Then, the upper support frame 110 and the support unit 160 are connected at a changeable connection angle through the first hinge 170. Even if the uppermost end surface of the stacked pipe segment 20 and the lower end of the support unit 160 are not arranged on a vertical line due to the opening or tilting between the pipe segments 20, the pipe segment 20 can still be supported and pressurized by the support unit 160.

[0119] In addition, if Figure 8 As shown, the lower support frame 120 allows the upper structure 121 on which the control unit 130 is installed and the lower structure 122 fixed on the upper part of the guide wall 2 to be slidably connected to each other, and the horizontal moving unit 123 can be installed at the connection between the upper structure 121 and the lower structure 122.

[0120] When the first fixing hole 230 and the second fixing groove 112 are not arranged on a vertical line, the direction of extension or contraction of the control unit 130 is inconsistent with the direction of the tensile force acting on the steel strand 30, and the tensile force acting on the steel strand 30 is generated by the combined force of the horizontal component and the vertical component. While increasing the combined force of the tensile force acting on the steel strand 30 by the tensile force of the horizontal component, the possibility of damage caused by overload of the steel strand 30 or the upper end stopper 31 can be increased.

[0121] Thus, the horizontal moving unit 123 horizontally moves the upper structure 121 in a direction close to or away from the center direction of the vertical hole 1, so that the first fixing hole 230 of the fixing tool 200 and the second fixing groove 112 of the segment controller 100 can be arranged on a vertical line, thereby preventing damage caused by overloading of the steel strand 30 or the upper end stop 31.

[0122] In addition, an eccentricity detector 400 for detecting the inclination of the stacked segments 20 may be added to the segment controller 100 .

[0123] like Fig. 9 As shown, the eccentricity detector 400 is installed with a guide rod 410, which is made to protrude toward the center of the vertical hole 1. The guide rod 410 can be constructed to be able to slide according to the spacing between the guide wall 2 and the inner wall of the stacked pipe segment 20 to adjust the protruding length.

[0124] A second pulley 411 is rotatably mounted on the protruding end of the guide rod 410, and a wire 420 is hung on the second pulley 411. A weight 421 is mounted on one end of the wire 420 that is lifted and lowered along the inner wall of the pipe segment 20, and a winding shaft 430 that controls the unwinding, rewinding or stopping state of the wire 420 is connected to the other end of the wire 420.

[0125] As the depth of the vertical hole 1 is gradually deepened by digging the vertical hole 1 and stacking the segments 20, the unwinding reel 430 is used to lower the weight 421 installed on the line 420. The inclination of the segment 20 is detected by the change in the distance between the line 420 located between the second pulley 411 and the weight 421 and the inner wall surface of the stacked segments 20, thereby controlling the action of the segment controller 100.

[0126] In addition, if Fig.10 As shown, the fixing tool 200 may be composed of two parts, an inner fixing tool 210 and an outer fixing tool 220, which can be connected and separated from each other. The first fixing holes 230 of a semicircular shape may be formed in the inner fixing tool 210 and the outer fixing tool 220, respectively, while the connecting surface between the inner fixing tool 210 and the outer fixing tool 220 passes through the center of each first fixing hole 230.

[0127] If the fastening component is inserted into the fastening hole 240 for fastening after the steel strand 30 is connected to the first fixing hole 230, the outer fixing tool 220 and the inner fixing tool 210 are approached to each other and the steel strand 30 is pressurized to fix the pipe segment 20 and the steel strand 30. When the fastening component is a bolt, an embedded nut can be inserted into the fastening hole 23 of the fixing tool.

[0128] At this time, when the fixing tool 200 is installed on the outer arch surface of the stacked pipe segment 20, the fixing tool fastening hole 23 is formed through the inner and outer arch surfaces of the pipe segment 20, and the end of the embedded nut is exposed to the outside of the inner side surface of the pipe segment 20 through the fixing tool fastening hole 23, so that when the steel strand 30 is separated and recovered after the construction of the vertical hole 1 is completed, the exposed end of the embedded nut can make it easier to separate the steel strand 30 and the fixing tool 200.

[0129] Then, in order to improve the fastening force with the steel strand 30 , a pattern consisting of grooves and protrusions is formed on the surface of the first fixing hole 230 , or an elastically deformable high-strength member can be inserted between the steel strand 30 and the first fixing hole 230 .

[0130] In addition, a fixing tool installation groove 22 having a recessed groove similar in shape to the contact surface shape of the fixing tool 200 may be formed on the surface of the segment block 21 at the position for installing the fixing tool 200. In particular, when the fixing tool installation groove 22 is formed on the outer side surface of the stacked segments 20, the height of the fixing tool 200 protruding from the arch surface of the segment 20 is reduced, thereby reducing interference with the excavation surface during the descent of the segment 20 during the construction of the vertical hole 1, and allowing the segment 20 to descend more smoothly.

[0131] In addition, if Fig.11 As shown, an inclined surface is formed at the lower end of the segment shoe 10, which gradually slopes downward from the center direction of the vertical hole 1 toward the outside direction, so as to improve the straightness of the segment shoe 10 and the segment 20 when they are descending. A third fixing hole 11 is formed on the inclined surface at the lower end of the segment shoe 10, and a first pulley 12 with a circular cross-sectional shape can be installed on the inner or outer side of the segment shoe 10.

[0132] The steel strand 30 connected to the third fixing hole 11 can be hung on the first pulley 12 while the connection direction between the steel strand 30 and the segment shoe 10 can be converted. Accordingly, when the fixing tool 200 is installed on the outer arch surface of the segment 20, the lower end stopper 32 is formed on the inner side surface of the vertical hole 1, and then after the construction of the vertical hole 1 is completed, when the steel strand 30 is separated and recovered, it is easier to separate the steel strand 30 and the lower end stopper 32.

[0133] In addition, if Fig.13 As shown, a reel 180 for winding the steel strand 30 may be installed on the segment controller 100 .

[0134] At this time, distinguishable marks may be formed on the surface of the steel strand by lines or colors at predetermined intervals, thereby making it possible to know the length of the steel strand unwound from the reel 180 .

[0135] In addition, two or more pressurizers 300 may be arranged on the upper surface of the guide wall 2 to form a predetermined angle.

[0136] The pressurizer 300 is composed of a pressurizing support frame 310 arranged on the upper surface of the guide wall 2 and a pressurizing unit 320 connected downward to the end of the pressurizing support frame 310. The pressurizing unit 320 composed of a piston and a cylinder controls the internal fluid pressure to extend or contract the length while descending or ascending, thereby pressurizing the upper surface of the uppermost stacked pipe segment 20 to descend the pipe segment 20 or separate from the pipe segment 20.

[0137] At this time, the pressurizing support frame 310 of the pressurizer 300 is composed of a vertical frame 311 and a horizontal frame 312. The vertical frame 311 is installed on the upper surface of the guide wall 2, and the other end of the horizontal frame 312 is connected to the upper part of the vertical frame 311 so that one end protrudes toward the center direction of the vertical hole 1; Fig.16 As shown, the pressurizing unit 320 may be configured to be connected to the lower surface of the horizontal frame 312 via the second hinge 321 , and the angle of the pressurizing unit 320 may be changed with the second hinge 321 as an axis.

[0138] In addition, if Fig.17 and Fig.18 As shown, more than one auxiliary controller 500 can be installed on the segment shoe 10 so that the auxiliary controller 500 is configured at a predetermined angle. Each auxiliary controller 500 is composed of a fixing frame 510 and an auxiliary control unit 520. The fixing frame 510 is formed protruding on the inner arch surface of the segment shoe 10 toward the center of the vertical hole 1, and the auxiliary control unit 520 is installed at the lower part of the fixing frame 510.

[0139] The fixing frame 510 protrudes to form a ring shape along the inner arch surface of the segment shoe 10, or only protrudes a part at the position where the auxiliary control unit 520 is installed. The auxiliary control unit 520 extends or contracts its length by controlling the fluid pressure.

[0140] like Fig.19 As shown, when the auxiliary control unit 520 is extended, the lower end of the auxiliary control unit 520 descends and contacts the excavation surface at the lower part of the vertical hole 1. When the end of the auxiliary control unit 520 is in contact with the excavation surface of the vertical hole 1, the auxiliary control unit 520 located at the position where the opening or tilting occurs between the pipe segments 20 additionally performs an extension action.

[0141] The auxiliary control unit 520 adjusts the reaction force to the load of the segment shoe 10 and the segment 20 at the portion where the extension action is added, thereby correcting the inclination or opening of the stacked segments 20.

[0142] Then, the auxiliary controller 500 can be installed together with the pressurizer 300, and the pressure applied in the lower direction by the action of the pressurizer 300 and the pressure applied in the upper direction by the action of the auxiliary controller 500 can work together to more effectively correct the inclination or opening of the stacked pipe segments 20.

[0143] At this time, the auxiliary controllers 500 may be installed in the same number and at the same arrangement angle as the pressurizers 300 , or in a different number and at a different arrangement angle than the pressurizers 300 .

[0144] The following describes a vertical hole construction method using the downward segment descent control system constructed as described above.

[0145] 1. Mining steps:

[0146] In the excavation step, the ground surface at the location of the vertical hole 1 to be constructed is excavated to form an entrance to the vertical hole 1, and bottom concrete is poured along the bottom surface of the excavated vertical hole 1 and the entrance edge of the vertical hole 1 where the guide wall 2 is to be set.

[0147] 2. Steps for setting the segment shoe and the lowest segment:

[0148] If the excavation step is completed, the segment shoe 10 is arranged at the construction position of the vertical hole 1 on the upper surface of the bottom concrete, and the lowermost segment 20 is stacked and fixedly connected on the upper part of the segment shoe 10 .

[0149] 3. Steps for setting up the diversion wall:

[0150] In the guide wall setting step, concrete is poured along the edge of the segment shoe 10 arranged on the bottom concrete to set the guide wall 2 as the supporting structure of the segment controller 100. When forming the concrete steel reinforcement structure of the guide wall 2, a fastening structure or fastening device combined with the lower end base part of the segment controller 100 is pre-set.

[0151] 4. Segment controller setting steps:

[0152] If the guide wall setting step is completed, the segment controller setting step is performed, and the segment controller 100 is set on the upper surface of the guide wall 2 set along the entrance of the vertical hole 1. When the segment 20 is tilted during the construction of the vertical hole 1 and the tilt is corrected by the segment controller 100, in order to correct it more smoothly, it is preferred to configure and install more than three segment controllers 100 at a predetermined angle. At this time, the number of segment controllers 100 set on the guide wall 2 is determined by considering the total load of the stacked segments 20 according to the diameter and depth of the vertical hole 1 to be constructed.

[0153] 5. Steel strand connection steps:

[0154] In the steel strand connection step, one end of the steel strand 30 is passed through the second fixing hole 112 formed in the upper fixing tool 111 of the segment controller 100 and the third fixing hole 11 of the segment shoe 10 inserted into the vertical hole 1 in sequence, and then the lower end stopper 32 is fastened to the lower end of the steel strand 30 passing through the third fixing hole 11, and the upper end of the steel strand 30 is fixed by the upper end stopper 31 installed in the second fixing hole 112.

[0155] When constructing a vertical hole 1 by stacking segments 20 with a diameter of 13m formed by connecting segment blocks 21 made of precast concrete to a depth of 60m, in order to support the load of the segment shoes 10 and all the stacked segments 20, more than 160 PC steel wires with a diameter of 12.7mm are required. In the case of the steel strand 30 composed of a seven-stranded wire formed by twisting seven PC steel wires with a diameter of 12.7mm, more than 25 steel strands 30 need to be connected.

[0156] At this time, when each segment 20 is formed by connecting 10 segment blocks 21, a fixing tool 200 is installed between every two adjacent segment blocks 21, and a total of 5 fixing tools 200 are installed on the segment 20, and 5 steel strands 30 can be connected to each fixing tool 200.

[0157] In the steel strand connection step, the principle is to connect the outer side of the pipe segment 20 so that the steel strand 30 is located on the outer arch surface of the stacked pipe segment 20. According to the construction site conditions of the vertical hole 1, the inner side connection method of the pipe segment 20 so that the steel strand 30 is located on the inner arch surface of the stacked pipe segment 20 can be converted and applied.

[0158] 6. Segment stacking steps:

[0159] In the segment stacking step, the segment stacking process, the segment fixing process and the segment lowering process are repeatedly performed until the depth of the vertical hole 1 to be constructed is reached.

[0160] 6-1. Segment stacking process:

[0161] In the segment stacking process, the lowest segment 20 is stacked on the segment shoe 10 or additional segments 20 are stacked on the stacked segments 20 .

[0162] The segment blocks 21 constituting the segments 20 may be composed of prefabricated blocks in a completed state or caissons for pouring cement on site. When the segment blocks 21 are composed of caissons, additional steps of pouring concrete and curing may be added to the segment lamination process.

[0163] Then, in the pipe segment stacking process, the connection parts between the pipe segment blocks 21 constituting each pipe segment 20 can be fastened to each other by bent bolts, other fastening components or fixing components, and the connection parts between the upper and lower adjacent stacked pipe segments 20 can also be fastened to each other by bent bolts, other fastening components or fixing components.

[0164] 6-2. Segment fixing process:

[0165] Before or after stacking of each layer of the segments 20, fixing tools 200 with the same number and configuration angle as the segment controllers 100 arranged on the guide wall 2 are installed on the inner or outer arch surface of the segment 20. In the segment fixing process, the first fixing holes 230 of the fixing tools 200 installed on the stacked layer of segments 20 are connected to and fix the steel strands 30.

[0166] At this time, in the steel strand connection step, when the connection method on the outside of the segment 20 is applicable to connecting the steel strand 30 on the outer arch surface of the segment 20, the fixing tool 200 is installed on the outer arch surface of the segment 20; when the connection method on the inside of the segment 20 is applicable to connecting the steel strand 30 on the inner arch surface of the segment 20, the fixing tool 200 can be installed on the inner arch surface of the segment 20.

[0167] Separated from the bent bolts, other fastening components or fixing components for fastening the connection between the segments 20, a fixing component for the steel strand 30 is additionally inserted into the first fixing hole 230 of the fixing tool 200, and multiple fastenings are formed between the upper and lower stacked segments 20, thereby strengthening the fastening force between the segments 20, preventing the segments 20 from separating during the next segment lowering process, and guiding the segments 20 to be evenly lowered.

[0168] 6-3. Segment lowering process:

[0169] During the segment lowering process, if the segment 20 is connected and fastened to the steel strand 30 by the fixing tool 200, the bottom surface of the vertical hole 1 is excavated, and the upper end of the steel strand 30 in the fixed (locking) state is loosened (releasing) by controlling the upper end stopper 31, and then the segment shoe 10 and the segment 20 are moved downward to the depth excavated by the deadweight of the stacked segments 20.

[0170] At this time, in the segment fixing process, when the fixing tool 200 is installed on the outer arch surface of the segment 20, when the segment shoe 10 and the segment 20 are lowered, interference occurs between the side excavation surface of the vertical hole 1 and the protruding corner of the fixing tool 200, and it cannot descend smoothly. Therefore, a fixing tool installation groove 22 is formed on the fixing tool 200 installation surface of the segment block 21 to minimize the height of the fixing tool 200 protruding from the arch surface of the segment 20.

[0171] 6-4. Segment alignment process:

[0172] During the segment stacking step, if soft soil foundation appears at a part of the excavation surface, the segment shoes 10 and the segments 20 descend more quickly on the soft soil foundation while the segments 20 tilt, which may cause eccentricity between the stacked segments 20 .

[0173] When eccentricity occurs between the segments 20, the tension of the steel strands 30 connected to each segment controller 100 is individually controlled by the extension or contraction action of the control unit 130 of each segment controller 100 while the steel strands 30 are fixed (locked) by the upper end stopper 31, thereby also including and executing a segment alignment process for precisely aligning the segments 20.

[0174] When the segment alignment process is performed, the steel strand 30 lifts the segment shoe 10 and the segment 20 through the elongation action of the control unit 130 , and at the same time, the tensile force of the steel strand 30 generated by the load of the segment 20 acts on the upper support frame 110 .

[0175] Then, when the tube segment alignment process is performed, the uppermost end surface of the tube segment 20 and the lower end of the support unit 160 of the inclined stacked tube segments 20 are not arranged on the vertical line, or the first fixing hole 230 and the second fixing groove 112 are not arranged on the vertical line.

[0176] Thus, the upper structure 121 of the lower support frame 120 is slid by the horizontal moving unit 123 to vertically align the first fixing hole 230 and the second fixing groove 112, thereby reducing the possibility of damage caused by overload of the steel strand 30 or the upper end stopper 31.

[0177] At this time, when the pipe segment 20 is tilted or the support unit 160 cannot be aligned with the pipe segment 20 and the support unit 160 by moving the horizontal moving unit 123, the angle of connection with the upper support frame 110 is changed by the first hinge 170 installed on the upper part of the support unit 160 so that the pipe segment 20 and the support unit 160 can be in contact with each other, thereby supporting or pressurizing the pipe segment 20.

[0178] The support unit 160 installed downward on the lower surface of the upper support frame 110 is extended to contact the upper surface of the topmost stacked segment 20, thereby pressurizing the upper surface of the segment 20 and generating a reaction force of the same magnitude as the tensile force of the steel strand 30, thereby reducing the torque acting on the segment controller 100.

[0179] In addition, the reaction force applied to the upper surface of the tube segment 20 by the support unit 160 minimizes the step difference between the connecting portions of the upper and lower tube segments 20 during the stacking process of the tube segments 20, thereby preventing the upper and lower tube segments 20 from opening.

[0180] At this time, when the step difference between the segments 20 is corrected by the support unit 160 , it is necessary to release a portion of the fastening between the fixing tool 200 and the steel strand 30 installed on the segment 20 whose step difference is to be corrected.

[0181] 6-5. Segment eccentricity detection process:

[0182] In addition, an eccentricity detection process of detecting the eccentricity of the stacked segments 20 by using an eccentricity detector 400 may be included when performing the segment stacking step.

[0183] In the eccentricity detection process, the distance between the inner arch surface of the stacked segment 20 and the wire 420 is adjusted by adjusting the length of the guide rod 410, and the length of the wire 420 extended to the inside of the vertical hole 1 is adjusted by the winding shaft 430, and then the inclination degree of the segment 20 is detected by the change in the distance between the wire 420 and the inner wall surface of the stacked segment 20.

[0184] In the pipe segment alignment process, the correction value used to compensate for the inclination of the pipe segment 20 detected in the eccentricity detection process is reflected to control the lifting and lowering of the control unit 130 of each pipe segment controller 100, thereby aligning the pipe segment 20. If the alignment of the pipe segment 20 is completed, the interrupted construction process or the next construction process is continued.

[0185] 7. Steps for separating steel strands:

[0186] In addition, after the segment stacking step is completed, a steel strand separation step of separating the steel strands 30 from the segment shoe 10 and the fixing tool 200 may be additionally performed.

[0187] In the steel strand separation step, the lower end stopper 32 is separated, and the fastening component fastened to the fastening hole 23 of the fixing tool through the fastening hole 240 of the fixing tool 200 is separated, the upper end stopper 31 is released, and then the steel strand 30 is wound up by the reel 180 to recover the steel strand 30.

[0188] At this time, in the steel strand connection step, in the case of the outer side connection method of the pipe segment 20 in which the steel strand 30 is connected to the outer side arch surface of the pipe segment 20, such as Fig.10 and Fig.11 As shown, the embedded nut is inserted into the inner side of the segment 20 through the fastening hole 23 of the fixing tool so as to be exposed to the outside, and the fastening direction of the segment shoe 10 with the steel strand 30 is changed by the first pulley 12, so that the lower end stopper 32 can be formed on the inner side of the vertical hole 1. Accordingly, the staff loosens the embedded nut and the lower end stopper 32 inside the vertical hole 1, and can recover the steel strand 30 from the fixing tool 200 or the segment shoe 10.

[0189] 4-1. Pressurizer setting process:

[0190] In addition, in the segment lowering process of the segment stacking step, when the soil constituting the foundation is composed of clay or the like, or there is a risk of lateral earth pressure due to changes in the foundation or changes in the stiffness of the vertical hole 1 at various depths, the stacked segments 20 may not be able to be lowered by their own weight or excessive tilting and settlement may occur.

[0191] Thus, if Fig.14 and Fig.15 As shown, a pressurizer setting process can be additionally provided in the segment controller setting step, wherein the pressurizer setting process is to provide two or more pressurizers 300 at a predetermined angle on the upper surface of the guide wall 2, whereby the segment 20 can be pressurized downward by the action of the pressurizing unit 320 when the segment lowering process is performed.

[0192] When the pressurizing unit 320 is extended by the pressurizer 300, the upper end stopper 31 is released, thereby releasing the fixation of the steel strand 30. If the inclination of the pipe segment 20 is detected during the descent of the pipe segment 20, the upper end stopper 31 is actuated while the pressurizing unit 320 is stopped, thereby locking the steel strand 30.

[0193] Then, the correction value used to compensate for the inclination of the pipe segment 20 detected by the eccentricity detector 400 is reflected, and the control unit 130 of each pipe segment controller 100 is controlled to rise and fall, thereby aligning the pipe segment 20 and continuing the interrupted construction process or the next construction process.

[0194] The pressurizer 300 is located on the upper surface of the stacked segments 20, so interference may occur between the pressurizer 300 and the segments 20 to be stacked during the segment stacking process. The angle of the pressurizer 320 is changed with the second hinge 321 as the axis, thereby preventing interference with the segments 20, and thus making the segment stacking process more smoothly performed.

[0195] 2-1. Auxiliary controller installation process:

[0196] In addition, during the segment shoe and the lowermost segment setting step, an auxiliary controller installation process of installing one or more auxiliary controllers 500 on the segment shoe 10 may be added.

[0197] The auxiliary controller 500 added in the auxiliary controller installation process adjusts the magnitude of the reaction force against the load of the segment shoe 10 and the segment 20 by controlling the extension action of each auxiliary control unit 520 when executing the segment alignment process of the segment stacking step, thereby correcting the inclination or opening of the stacked segments 20.

[0198] According to the eccentricity of the segment 20 detected by the eccentricity detector 400 in the eccentricity detection process, the auxiliary controller 500 is automatically controlled to correct the eccentricity in the segment alignment process, and when the segment lowering process is performed, the segment 20 is prevented from settling unevenly during the excavation of the vertical hole 1, and the segment 20 can be guided to descend evenly after the excavation of the vertical hole 1. Accordingly, the tilt or opening of the stacked segments can be more effectively corrected in the execution of the segment alignment process.

[0199] In addition, a pressurizer setting process can be added to the segment controller setting step while the auxiliary controller installation process is added to the segment shoe and the lowermost segment setting step, and the combined force of the lower direction pressurizing force and the upper direction pressurizing force exerted by the pressurizer 300 and the auxiliary controller 500 respectively acts on the tilted or opened parts between the stacked segments 20, thereby more effectively correcting the alignment state of the segment 20.

[0200] The embodiments of the present invention have been described with reference to the above contents, but those skilled in the art in the art to which the present invention belongs should understand that other specific forms can be implemented without changing the technical concept or essential features of the present invention.

[0201] Therefore, the embodiments described above should be understood to be illustrative in all aspects and not restrictive. The scope of the present invention described in the above detailed description should be reflected by the scope of the claims. All changes or deformations derived from the meaning, scope and equivalent concepts of the claims are included in the scope of the present invention.

Claims

1. A downward segment descent control system, characterized in that: A plurality of segment blocks (21) formed of arch-shaped blocks or caissons are connected to form an annular segment (20), and multiple layers of the segment blocks (20) are stacked on the upper surface of an annular segment shoe (10) inserted into an excavation surface of a circular cross section to form a vertical hole (1) wall surface. The vertical hole (1) is composed of a segment controller (100), an upper fixing tool (111), a fixing tool (200), a second fixing hole (112), a third fixing hole (11), a plurality of steel strands (30), an upper end stopper (31) and a lower end stopper (32). The segment controller (100) is composed of a lower support frame (120) arranged at the entrance of the vertical hole (1) and an upper support frame (110) connected to each lower support frame (120) via a control unit (130) so as to be liftable. The upper fixing tool (111) is directly or indirectly mounted on the upper support frame (110) of the segment controller (100); The fixing tools (200) are provided with more than two for each pipe segment (20), forming a predetermined angle on the surface of the pipe segment block (21), and respectively forming more than one first fixing hole (230); The second fixing holes (112) are formed on the upper fixing tool (111) to have the same number as the total number of the first fixing holes (230) formed on each fixing tool (200); The third fixing holes (11) are formed on the segment shoe (10) with the same number and arrangement spacing as the first fixing holes (230) formed on each fixing tool (200); The plurality of steel strands (30) pass through first, second and third fixing holes (230, 112, 11) at corresponding positions in a vertical direction to interconnect the segment shoe (10) and the fixing tool (200) of the stacked segments (20) and the segment controller (100); The upper end stopper (31) is installed in the second fixing hole (112) to control the fixing or separation of the steel strand (30); The lower end stopper (32) is fastened to each steel strand (30) so as to be located below the third fixing hole (11).

2. The downward segment descent control system according to claim 1, characterized in that: The end of the upper support frame (110) in the direction of the vertical hole (1) is extended to be located on the upper part of the stacked tube segments (20), and the support unit (160) is connected downwardly to the lower surface of the extended upper support frame (110) to be arranged on the uppermost end surface of the stacked tube segments (20), and the upper support frame (110) and the support unit (160) are configured to change the connection angle through a first hinge (170).

3. The downward segment descent control system according to claim 1, characterized in that: The lower support frame (120) is composed of an upper structure (121) on which a control unit (130) is installed and a lower structure (122) fixed at the entrance of the vertical hole (1). A horizontal moving unit (123) is attached to the connection between the upper structure (121) and the lower structure (122) of the lower support frame (120), and the horizontal moving unit (123) horizontally moves the upper structure (121) in a direction close to or away from the center direction of the vertical hole (1).

4. The downward segment descent control system according to claim 1, characterized in that: An eccentricity detector (400) is attached to the segment controller (100). The eccentricity detector (400) is composed of a guide rod (410), a second pulley (411), a wire (420), and a winding shaft (430). The guide rod (410) is installed protruding toward the center direction of the vertical hole (1) and the protruding length is adjusted by sliding. The second pulley (411) is rotatably installed at the protruding end of the guide rod (410). The wire (420) is hung on the second pulley (411) and a weight (421) is installed at one end. The winding shaft (430) is connected to the other end of the wire (420) to control the wire (420) to unwind, rewind or stop state.

5. The downward segment descent control system according to claim 1, characterized in that: A fixing tool installation groove (22) in the shape of a recessed groove for installing a fixing tool (200) is formed on the surface of the segment block (21).

6. The downward segment descent control system according to claim 1, characterized in that: An inclined surface is formed at the lower end of the segment shoe (10) and gradually slopes downward from the center direction of the vertical hole (1) toward the outer direction. A third fixing hole (11) is formed on an inclined surface at the lower end of the segment shoe (10), and a first pulley (12) having a circular cross-sectional shape is installed on the inner side or the outer side of the segment shoe (10), so that the steel strand (30) connected to the third fixing hole (11) is hung on the first pulley (12) and the connection direction between the steel strand (30) and the segment shoe (10) is changed.

7. The downward segment descent control system according to claim 1, characterized in that: Two or more pressurizers (300) are arranged at a predetermined angle at the entrance of the vertical hole (1); The pressurizer (300) is composed of a pressurizing support frame (310) and a pressurizing unit (320), and the pressurizing unit (320) is connected downwardly at the end of the pressurizing support frame (310).

8. The downward segment descent control system according to any one of claims 1 or 7, characterized in that: One or more auxiliary controllers (500) are installed on the segment shoe (10). The auxiliary controller (500) is composed of a fixing frame (510) and an auxiliary control unit (520); the fixing frame (510) is formed to protrude from the inner arch surface of the segment shoe (10) so as to face the center direction of the vertical hole (1); and the auxiliary control unit (520) is installed at the lower part of the fixing frame (510) and can be extended or retracted.

9. A vertical hole construction method using a downward segment descent control system, characterized in that: The pipe segment (20) is in the shape of a ring connecting a plurality of pipe segment blocks (21), wherein the pipe segment blocks (21) are composed of an arch-shaped block or a caisson, and the pipe segments (20) are stacked in multiple layers on the upper surface of a ring-shaped pipe segment shoe (10) inserted into an excavation surface of a circular cross section to construct the wall surface of a vertical hole (1), comprising: The step of arranging the segment shoe and the lowest segment comprises arranging the segment shoe (10) at the position of the vertical hole (1) to be constructed, and combining the lowest segment (20) on the upper part of the segment shoe (10); A segment controller setting step, wherein a segment controller (100) is set on the upper surface of the entrance of the vertical hole (1), wherein the segment controller (100) is composed of a lower support frame (120) and an upper support frame (110), wherein the upper support frame (110) is connected to the lower support frame (120) in a liftable manner via a control unit (130); A steel strand connection step, wherein the end of the steel strand (30) is passed through a second fixing hole (112) and a third fixing hole (11) in sequence, wherein the second fixing hole (112) is formed on an upper fixing tool (111) directly or indirectly mounted on an upper support frame (110) of a segment controller (100), and the third fixing hole (11) is formed on a segment shoe (10), and then the steel strand (30) is fixed on an upper end stopper (31) mounted on the second fixing hole (112), and a lower end stopper (32) is fastened to the steel strand (30) exposed to the lower portion of the third fixing hole (11); The segment stacking step is to repeatedly perform a segment stacking process, a segment fixing process, and a segment lowering process, wherein the segment stacking process is to stack multiple layers of segments (20) on the upper part of the segment shoe (10), the segment fixing process is to install more than two fixing tools (200) on the surface of the segment (20), and to connect and fix the steel strand (30) in the first fixing hole (230) formed on each fixing tool (200), and the segment lowering process is to dig the bottom surface of the vertical hole (1) to lower the segment shoe (10) and the segment (20), and to control the fixing or loosening between the upper end stopper (31) and the steel strand (30) when the segment (20) is lowered or stops lowering; The segment stacking step also includes a segment alignment process, wherein when eccentricity occurs between the stacked segments (20), the tension of the steel strands (30) is controlled by each control unit (130) to align the segments (20).

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