JP2015175214A - Water conduction quantity control member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water conduction quantity control member capable of not only efficiently executing placing work of concrete when constructing a riverbed but also constructing a bulkhead of a river while taking into consideration the deterioration of a natural environment and the like.SOLUTION: The present invention relates to a water conduction quantity control member 1 erected on a water permeable layer 52 in the ground. The water conduction quantity control member 1 applying the present invention comprises: an erection member 2 provided in a boundary between a construction side A, the side on which water is shut off during construction, and a ground side B; and a movable member 3 installed in a predetermined range in the axial direction Y of the erection member 2. The erection member 2 is formed with first water conduction holes 20 penetrating in the axial orthogonal direction, and cuts off water conduction during the construction by blocking up the first water conduction holes 20 by the movable member 3 during the construction. The movable member 3 is formed with second water conduction holes 30 penetrating in the axial orthogonal direction, and conducts water after the construction by superposing the first water conduction holes 20 and the second water conduction holes 30 by moving the movable member 3 in the axial direction Y after the construction.

Description

  The present invention relates to a water flow rate control member erected on a water permeable layer in the ground.

  Conventionally, a method for reinforcing an existing revetment disclosed in Patent Document 1 has been proposed for the purpose of providing an existing revetment that is inexpensive, has a short construction period, has less influence on rivers and surroundings, and is excellent in flood control. Yes.

  The method of reinforcing an existing revetment disclosed in Patent Document 1 includes an existing revetment provided with a retaining wall in which a steel sheet pile continuous on a riverbank is supported on the bottom and a superstructure in which the upper part of the steel sheet pile is covered with concrete. It is a method of reinforcement.

  The method for reinforcing an existing revetment disclosed in Patent Document 1 is to dig down the water bottom ground in front of the existing revetment that needs reinforcement, and to lay a horizontal block installation foundation made of concrete or the like on the deep water bottom ground. The L-type retaining wall block is suspended by a crane and placed in parallel along the existing revetment, and the gap between the L-type retaining wall block and the existing revetment is backed as a retaining wall. It will be laid with earth or sand or concrete to make a new bottom and the retaining wall will be a new revetment.

JP 2010-196271 A

  In the reinforcement method of the existing revetment disclosed in Patent Document 1, the riverbed ground and the surrounding ground are completely composed of a plurality of steel sheet piles in order to construct a retaining wall by supporting a continuous steel sheet pile on the bottom of the river. It will be blocked. For this reason, the method of reinforcing the existing revetment disclosed in Patent Document 1 prevents the groundwater from entering the riverbed ground from the surrounding ground, and the groundwater flows into the river from the riverbed ground during the placement work of the block installation foundation. Therefore, the placing work can be easily performed.

  However, the method for reinforcing an existing revetment disclosed in Patent Document 1 is that the riverbed side and the peripheral side are completely cut off by a plurality of steel sheet piles in the bottom of the ground, so that from the peripheral side to the riverbed in the permeable layer of the bottom of the ground It becomes difficult to let groundwater flow. At this time, the method for reinforcing an existing revetment disclosed in Patent Document 1 not only has the possibility that the flow of groundwater is obstructed by the permeable layer of the bottom of the ground, causing the riverbed ground to sink, etc., but also causes deterioration of the natural environment. There was a problem that there is a risk of doing.

  Therefore, the present invention has been devised in view of the above-mentioned problems, and the object of the present invention is only to be able to efficiently carry out concrete placing work and the like when constructing a river bed. It is to provide a water flow rate control member that can build a river revetment that takes into account the deterioration of the natural environment.

  The water flow control wall according to the first invention is a water flow control wall constructed in a ground having a water permeable layer, and is a plurality of water flow control members standing in the ground and connected in the width direction. The water flow rate control member includes a standing member provided at a boundary between the construction side and the ground side, and a movable member attached to a predetermined range in the axial direction of the standing member, and the movable member The member is formed with one or more second water passage holes penetrating in the direction perpendicular to the axis, and the standing member is formed with one or more first water passage holes penetrating in the direction perpendicular to the axis, The first water passage hole is disposed in a water permeable layer in the ground, and a holding member that holds the movable member in a state of being movable in the axial direction is provided.

  The water flow control wall according to the second invention is the water flow control wall according to the first invention, wherein the standing member is closed while the first water passage hole is closed by a non-water passage portion of the movable member during construction. The movable member is pulled up or pushed in after the construction, and moves in the axial direction so that the second water passage hole is overlapped with the first water passage hole.

  The water flow control wall according to a third invention is the water flow control wall according to the first invention, wherein the standing member is overlapped with the second water flow hole during the construction, and the movable member. Is lifted or pushed in after the construction work, and moves in the axial direction, and the first water passage hole is blocked by the non-water passage portion of the movable member.

  A water flow control wall body according to a fourth invention is constructed in the ground having a permeable layer below the excavated floor mounting surface in the first invention or the second invention, and the standing member is an excavated floor. During the construction for excavating the construction side where the attachment surface is provided at a predetermined depth, the first water passage hole is blocked by the non-water passage portion of the movable member, and the movable member is provided with the excavation floor attachment surface. An artificial flooring material such as concrete is disposed on the bottom surface of the artificial water channel, and after the construction work, the second water passage hole is moved in the axial direction by being pulled up or pushed in. It is characterized by being overlaid on the first water passage hole.

  In the first or second invention, the water flow control wall body according to the fifth invention has a water permeable layer on the surface layer side immediately below the excavated flooring surface and a water impermeable layer directly below the water permeable layer on the surface layer side. Then, it is constructed in the ground where the deep water-permeable layer exists in an alternating state below the water-impermeable layer, or in the ground where the water-impermeable layer is present directly below the water-permeable layer on the surface layer side. In the construction work in which the standing member is excavated at a predetermined depth on the construction side where the excavation flooring surface is provided, the first water passage hole is blocked by the non-water passage portion of the movable member. In addition, the movable member is arranged in the axial direction by being pulled up or pushed in after the construction work in which an artificial floor material such as concrete is disposed on the excavation flooring surface and the bottom surface of the artificial waterway is constructed. And the second water passage hole is overlapped with the first water passage hole. To.

  The water flow control wall body according to the sixth invention is constructed in the ground on both banks of the river having a permeable layer below the excavated floor surface in the first invention or the second invention, and is located on the right bank side of the river. A plurality of water flow control members that are erected on each of the grounds and connected in the width direction, and a plurality of water flow control members that are erected on each of the grounds on the left bank side of the river and are connected in the width direction The construction side between the plurality of water flow control members on the river right bank side and the plurality of water flow control members on the river left bank side is provided with a drilling flooring surface by excavating at a predetermined depth In addition, during the construction work to excavate the construction side where the excavation flooring surface is provided at a predetermined depth, the first water passage hole is blocked by the non-water passage portion of the movable member, The movable member is constructed by placing an artificial floor material such as concrete on the excavation flooring surface to construct a bottom surface of the artificial water channel. After construction and installation, lifted, or, by being pushed, moves in the axial direction, the second water communicating hole is characterized in that superimposed on the first water communicating hole.

  In the water flow control wall according to the seventh invention, in any one of the first invention to the sixth invention, the movable member is attached to the ground side which is the opposite side of the construction side where the excavation flooring surface is provided. Features.

  In the water flow control wall according to the eighth invention, in any one of the first to seventh inventions, the movable member is a steel having a substantially flat surface such as a steel plate, an angle steel or a channel steel. It is characterized by that.

  The water flow control wall body according to a ninth aspect of the present invention is characterized in that, in any one of the first to eighth aspects, the movable member is provided with a lifting jig that enables the movable member to be lifted after construction.

  The water flow control wall according to a tenth aspect of the present invention is characterized in that, in any one of the first to eighth aspects, the movable member is provided with a pushing jig that allows pushing after the construction.

  The water flow control wall according to the eleventh aspect of the present invention is the fluid flow control wall according to any one of the first to tenth aspects, wherein the holding member is a guide member that restrains the movable member in the width direction, and the movable member is in a direction perpendicular to the axis. And a separation preventing member that is constrained to the distance.

  The water flow control wall body according to a twelfth aspect of the present invention is characterized in that, in any one of the first to eleventh aspects, a seal member is provided between the standing member and the movable member.

  The water flow control wall according to the thirteenth invention is characterized in that, in the twelfth invention, the sealing material is a water-absorbing swellable water-stopping material that absorbs water and exhibits a water-stopping effect.

  A water flow control wall according to a fourteenth aspect of the present invention is characterized in that, in the twelfth aspect of the present invention, the sealing material is a sliding water-stopping material that exhibits a lubricant function such as petrolatum paste, grease, and petroleum jelly.

  In the water flow control wall according to the fifteenth aspect of the present invention, in any one of the first to fourteenth aspects, the standing member is provided with a lower stopper that prevents the movable member from falling off.

  In the water flow control wall according to the sixteenth aspect of the present invention, in any one of the first to fifteenth aspects, a steel sheet pile is used as the standing member.

  The water flow control wall according to a seventeenth aspect of the invention is the sixteenth aspect of the invention, characterized in that the movable member is attached to either one or both of the flange portion and the web portion of the steel sheet pile. .

  In the water flow control wall according to the eighteenth aspect of the present invention, in any one of the first aspect to the seventeenth aspect, the standing member is inserted into a slit formed in the movable member, and a protruding member is provided. It is characterized by that.

  In the water flow control wall according to the nineteenth aspect of the present invention, in any one of the first to eighteenth aspects, the second water flow hole is formed in a substantially long hole shape extending in the axial direction of the movable member. It is characterized by.

  A water flow control wall body erecting method according to the twentieth invention is a water flow control wall body erecting method erecting in a water permeable layer in the ground, wherein the water flow control wall body erects in a direction perpendicular to one or more axes. A plurality of water flow rate control members each comprising a standing member formed with one water passage hole and a movable member formed with one or more second water passage holes penetrating in the direction orthogonal to the axial center of the standing member. The movable member is attached to a predetermined range in the axial direction, and the first water passage hole is closed by the non-water passage portion of the movable member, and is connected in the width direction in the ground and is erected. The first step of constructing the bottom of the artificial water channel by excavating the construction side on which the excavation flooring surface is provided at a predetermined depth and then arranging the artificial floor material such as concrete on the excavation flooring surface; After constructing the artificial water channel bottom in the first step, the movable member is pulled up or pushed in A second step of increasing the amount of water flow from the ground side to the construction side by moving the movable member in the axial direction so as to overlap the second water flow hole with the first water flow hole. It is characterized by.

  A water flow rate control member according to a twenty-first aspect of the invention is a water flow rate control member that is erected on a water permeable layer in the ground, and is erected on the boundary between the construction side and the ground side that are blocked during construction. A member and a movable member attached to a predetermined range in the axial direction of the standing member, wherein the standing member has one or more first water passage holes penetrating in a direction perpendicular to the axial core, A holding member that holds the movable member in a state of being movable in the axial direction is provided, and the movable member has one or more second water passage holes penetrating in the direction orthogonal to the axial center. To do.

  A water flow rate control member according to a twenty-second aspect of the present invention is a water flow rate control member that is erected on a permeable layer in the ground, and is erected on the boundary between the construction side and the ground side that are blocked during construction. A member and a movable member attached to a predetermined range in the axial direction of the standing member, and the standing member is formed with a first water passage hole penetrating in a direction perpendicular to the axial center, and is under construction The first water passage hole is closed by the movable member to block water passage during construction, and the movable member is formed with a second water passage hole penetrating in the direction perpendicular to the axis. Then, by moving the movable member in the axial direction after construction work, the first water passage hole and the second water passage hole are overlapped, and water is passed after the construction work. To do.

  According to a twenty-third aspect of the present invention, in the twenty-first aspect or the twenty-second aspect of the present invention, the movable member pushes and moves the movable member downward after the construction work so that the first water passage hole and the movable member are moved. The second water passage hole is overlapped to allow water to pass therethrough.

  According to a twenty-fourth aspect of the present invention, in the twenty-first aspect or the twenty-second aspect of the present invention, the movable member moves the movable member by pulling up and moving the movable member upward after construction. The second water passage hole is overlapped to allow water to pass therethrough.

  According to a twenty-fifth aspect of the present invention, in the twenty-first aspect, the water flow rate control member includes: a guide member that restrains the movable member in the width direction; and a separation prevention member that restrains the movable member in the direction perpendicular to the axis. It is characterized by having.

  The water flow control member according to a twenty-sixth aspect of the invention is any one of the twenty-first to twenty-fifth aspects, wherein the standing member is provided with a sealing material between the movable member and the movable member.

  According to a twenty-seventh aspect of the present invention, in the twenty-sixth aspect, the water flow control member according to the twenty-seventh aspect is characterized in that the sealing material is a water-absorbing swellable water-stopping material that absorbs water and exhibits a water-stopping effect.

  According to a twenty-eighth aspect of the present invention, in the twenty-sixth aspect, the water flow control member according to the twenty-eighth aspect is characterized in that the sealing material is a sliding water-stopping material that exhibits a lubricant function such as petrolatum paste, grease, and petroleum jelly.

  In the water flow control member according to a twenty-ninth aspect of the present invention, in any one of the twenty-first to twenty-eighth aspects, the standing member is provided with a lower stopper for preventing the movable member from falling off.

  The water flow control member according to a thirtieth aspect of the invention is any one of the twenty-first to twenty-ninth aspects, wherein the standing member is inserted into a slit formed in the movable member, and a protruding member is provided. It is characterized by.

  In the water flow control member according to a thirty-first aspect of the present invention, in any one of the twenty-first to thirtieth aspects, the second water flow hole is formed in a substantially long hole shape extending in the axial direction of the movable member. Features.

  According to the first invention to the thirty-first invention, the construction side and the ground side are surely impeded during construction to construct the riverbed, and the groundwater flows between the construction side and the ground side after the construction to construct the riverbed. By building the riverbed, not only can the concrete placement work when building the riverbed be carried out efficiently, but also the river bank that takes into account the subsidence of the riverbed and the deterioration of the natural environment. Is possible.

It is a schematic diagram which shows the river bed in which the water flow control wall body to which this invention is applied is erected. It is a perspective view which shows the water flow control wall body to which this invention is applied. (A) is a top view which shows the standing member by which the 1st water hole was formed in the flange part by the water flow control member to which this invention is applied, (b) is the front view. (A) is a top view which shows the standing member by which the 1st water flow hole was formed in the web part by the water flow control member to which this invention is applied, (b) is the front view. (A) is a top view which shows the standing member of a hat-shaped steel sheet pile by the water flow control member to which this invention is applied, (b) is the front view. (A) is a top view which shows the movable member by which the steel plate was used with the water flow control member to which this invention is applied, (b) is the front view. (A), (c) is the top view and front view which show the movable member by which angle steel was used with the water flow control member to which this invention is applied, (b), (d) is grooved steel It is the top view and front view which show the used movable member. (A) is a top view which shows the movable member attached inside the groove part of the standing member by which the 1st water hole was formed in the flange part by the water flow control member to which this invention is applied, (b) These are the rear views seen from the ground side. (A) is a top view which shows the movable member attached to the outer side of the groove part of the standing member by which the 1st water flow hole was formed in the flange part by the water flow amount control member to which this invention is applied, (b) These are the rear views seen from the ground side. It is a top view which shows the holding member and sealing material of a water flow control member to which this invention is applied. It is a side view which shows the lower stopper and sealing material of the water flow control member to which this invention is applied. (A) is a top view which shows the movable member attached to the inner side of the groove part of the standing member by which the 1st water flow hole was formed in the web part by the water flow control member to which this invention is applied, (b) These are top views which show the movable member attached to the outer side of the groove part of a standing member. (A) is a side view showing a state in which a water flow control wall body to which the present invention is applied is installed in the ground by closing the first water passage hole of the standing member with a movable member, (b) These are the rear views seen from the ground side. (A) is a side view showing a state in which a water flow control wall body to which the present invention is applied is installed in the ground by closing the first water flow hole of the standing member with a movable member and standing in the ground. Yes, (b) is a rear view seen from the ground side. (A) shows the state by which the 1st water flow hole of the standing member and the 2nd water flow hole of the movable member were piled up by pulling up a movable member with the water flow control wall body to which this invention is applied. It is a side view, (b) is the rear view seen from the ground side. (A) shows the state by which the 1st water flow hole of the standing member and the 2nd water flow hole of the movable member were piled up by pushing a movable member with the water flow control wall body to which this invention is applied. It is a side view, (b) is the rear view seen from the ground side. It is a front view which shows the 2nd water flow hole formed in the substantially long hole shape of the water flow rate control wall body to which this invention is applied.

  Hereinafter, the form for implementing the water flow control wall body 7 to which this invention is applied and the water flow control member 1 to which this invention is applied is demonstrated in detail, referring drawings.

  As shown in FIG. 1, the water flow control wall body 7 to which the present invention is applied is constructed in the ground having the water permeable layer 52, and the water flow control member 1 to which the present invention is applied mainly includes: In river improvement work, etc., it is driven continuously into either one or both of the left bank side and the right bank side of the river 5.

  River 5 will be expanded in order to prevent flooding after heavy rains, etc., and widen the narrow river channel before the renovation, and secure a wide river channel after the renovation. Will be.

  The river 5 is constructed by excavating the old river bed before the repair and the surrounding ground in the river repair work or the like, so that the river bed 51 after the repair is constructed and the revetment concrete 54 is constructed. The river 5 uses the ground around the old river bed before the repair, and the left and right bank peripheral ground 6 after the repair is constructed.

  In the river 5, for example, a permeable layer 52 through which groundwater passes is formed on the surface layer side below a river bed 51 constructed after renovation. The permeable layer 52 is formed continuously from the peripheral ground 6 on the left bank side and the right bank side of the river 5 to the lower part of the river bed 51, and it is necessary to allow the groundwater to pass through before and after the repair.

  In the river 5, an impermeable layer 53 such as a clay layer that does not allow passage of groundwater is formed below the permeable layer 52 on the surface layer side. In the river 5, when the deep-side permeable layer 52 is formed below the impermeable layer 53, the impermeable layer 53 naturally passes through the groundwater from the deep-side permeable layer 52 to the surface-side permeable layer 52. It will be a block.

  The water flow control wall 7 to which the present invention is applied includes a plurality of water flow control members 1 that are erected in the ground and connected in the width direction X, as shown in FIG. The water flow rate control member 1 has a standing member 2 provided at the boundary between the construction side A and the ground side B, and a movable member 3 attached to a predetermined range in the axial direction Y of the standing member 2. The movable member 3 is formed with one or more second water passage holes 30 penetrating in the direction perpendicular to the axis. The standing member 2 is formed with one or more first water passage holes 20 penetrating in the direction perpendicular to the axis, and the first water passage holes 20 are disposed in the water permeable layer 52 in the ground, and the movable member 3 A holding member 25 that holds the movable state in the axial direction Y is provided.

  The water flow rate control member 1 to which the present invention is applied is the ground where the construction side A of the renovation work which is shielded during construction such as river renovation work and the surrounding ground 6 is constructed on the left bank side and the right bank side of the river 5 Driven into the border with side B. The water flow rate control member 1 to which the present invention is applied is erected on the surface-side permeable layer 52 in the ground and, if necessary, is allowed to reach the water-impermeable layer 53 or the permeable layer 52 on the deep layer side. Is done.

  The water flow rate control member 1 to which the present invention is applied includes a standing member 2 such as a steel sheet pile provided by being driven into the boundary between the construction side A and the ground side B which is blocked during construction, and the standing member 2. And a movable member 3 such as a steel plate attached in a predetermined range in the axial direction Y.

  As the standing member 2, for example, a U-shaped steel sheet pile having a substantially U-shaped cross section is used as shown in FIG. At this time, the standing member 2 is formed with a flange portion 21 extending in the width direction X and a pair of web portions 22 extending in the depth direction Z from both ends of the flange portion 21 in the width direction X. A joint portion 23 is formed at one end of the portion 22. As shown in FIG. 3B, the standing member 2 extends in the axial direction Y and is erected.

  In addition, as shown in FIG. 5, the standing member 2 may be a hat-shaped steel sheet pile having a substantially hat-shaped cross section. At this time, in the standing member 2, a pair of arm portions is formed at one end of the pair of web portions 22, and a joint portion 23 is formed at one end of each arm portion. Further, the standing member 2 may be a steel pipe sheet pile having a substantially circular cross section. At this time, joint parts 23 are formed at both ends in the width direction X of the steel pipe main body part. Furthermore, the standing member 2 may be a steel pipe pile having a substantially circular cross section.

  When the steel sheet pile is used for the standing member 2, as shown in FIG. 3A, the first water passage hole 20 penetrating in the axial center orthogonal direction is formed in the flange portion 21. The first water holes 20 are formed in a substantially circular shape having a diameter of about 65 mm, and when a plurality of holes are formed as shown in FIG. It is formed with an interval of.

  Moreover, as for the standing member 2, when the steel sheet pile is used, as shown to Fig.4 (a), the 1st water flow hole 20 penetrated to an axial center orthogonal direction may be formed in the web part 22. FIG. At this time, as shown in FIG. 4B, the standing member 2 is formed with one or a plurality of first water holes 20 without causing a cross-sectional defect in the flange portion 21 that bears a large supporting force. Will be. As shown in FIGS. 3 to 5, the standing member 2 has the first water passage holes 20 formed in any one or more of the flange portion 21, the web portion 22, and the arm portion.

  The movable member 3 is made of steel having a substantially flat surface. As the movable member 3, for example, as shown in FIG. 6A, a substantially flat steel plate is used. At this time, the movable member 3 is formed to extend in the axial direction Y as shown in FIG. The movable member 3 is not limited to this, and angle steel or other angle steel may be used as shown in FIG. 7A, and the movable member 3 is bent in the depth direction Z as shown in FIG. Corrugated steel may be used. Since a compressive force acts on the movable member 3, it is possible to prevent the buckling of the movable member 3 by using a shape steel having a cross section (such as a shape steel) having a buckling resistance force. .

  As shown in FIGS. 6 and 7, the movable member 3 is formed with a second water passage hole 30 penetrating in the direction perpendicular to the axial center in a steel plate or the like. At this time, in the movable member 3, a portion where the second water passage hole 30 is not formed becomes the non-water passage portion 34. When the second water passage hole 30 is formed in a substantially circular shape having a diameter of about 65 mm and a plurality of water holes are formed, the second water passage hole 30 is formed with an interval of about 1 m in the axial direction Y. Become.

  As shown in FIGS. 8 and 9, the water flow rate control member 1 to which the present invention is applied is the ground side B that is the opposite side of the construction side A that performs the river improvement work, and the movable member 3 is provided on the standing member 2. It is attached. The standing member 2 is provided with a holding member 25 that restrains the movable member 3 in the direction perpendicular to the axis and a lower stopper 27 that prevents the movable member 3 from falling off. In the movable member 3, a lifting jig 31 such as a bent reinforcing bar is provided in the upper part in the axial direction Y.

  As shown in FIG. 8A, when the holding member 25 is provided inside a groove portion 24 formed by the flange portion 21 and the pair of web portions 22, the holding member 25 is brought into contact with the flange portion 21 such as a steel sheet pile. A pair of web portions 22 are provided with a separation preventing member 25a such as a steel plate so as to sandwich the movable member 3 such as a steel plate. Further, as shown in FIG. 9A, when the holding member 25 is provided outside the groove portion 24, a pair of guide materials 26 such as round steel extending in the axial direction Y are welded to the flange portion 21. The movable member 3 such as a steel plate, which is attached to the guide member 26 such as a steel plate and the like and is provided with a separation preventing member 25a such as a steel plate in contact with the flange portion 21 such as a steel sheet pile, is attached. .

  As shown in FIGS. 8B and 9B, the lower stopper 27 is formed by welding a substantially rectangular steel plate or the like to a flange portion 21 such as a steel sheet pile so that the lower end of the movable member 3 in the axial direction Y is reached. It is provided in contact with. The lower stopper 27 is not limited to this, and may be provided apart from the lower end of the movable member 3. The lifting jig 31 is configured such that the upper part of the bent reinforcing bar is welded to the flange part 21 and the lower part of the bent reinforcing bar is separated from the flange part 21 so that the wire 33 or the like is hooked.

  As shown in FIG. 10, the water flow rate control member 1 to which the present invention is applied is provided with a sealing material 29 such as a water-absorbing swellable water-stopping material 29a or a sliding water-stopping material 29b between the movable member 3 and the flange portion 21. May be provided. At this time, when the holding member 25 is provided inside the groove portion 24 as shown in FIG. 10A or when it is provided outside the groove portion 24 as shown in FIG. A pair of guide members 26 such as round steel extending in the direction Y is attached to the flange portion 21 by welding or the like, and a separation preventing member 25a such as a steel plate is provided on the pair of guide members 26 such as round steel. The guide member 26 restrains the movable member 3 in the width direction X, and the separation preventing member 25a restrains the movable member 3 in the direction perpendicular to the axis.

  As shown in FIG. 11, the water flow rate control member 1 to which the present invention is applied is provided with a sealing material 29 such as a water-absorbing swelling water-stopping material 29a or a sliding water-stopping material 29b between the movable member 3 and the flange portion 21. Is provided. As shown in FIG. 11A, the water flow rate control member 1 to which the present invention is applied is such that the movable member 3 is locked to a lower stopper 27 such as a round steel welded to the flange portion 21 or the like. As shown in FIG. 11B, the movable member 3 is locked to a lower stopper 27 made of square steel or the like welded to the flange portion 21. As the sealing material 29, a water-swelling water-stopping material 29 a that exhibits water-stopping effect by absorbing water, a sliding water-stopping material 29 b that exhibits a lubricant function such as petrolatum paste, grease, and petroleum jelly is used. Since the lower stopper 27 receives a resistance force in the ground when the movable member 3 is pushed in, the lower stopper 27 can be replaced with a protruding member 28 inserted through the slit 32, as will be described later.

  The water flow rate control member 1 to which the present invention is applied may be bent or warped in the standing member 2 such as a steel sheet pile. At this time, the standing member 2 such as a steel sheet pile is straight. It will not be formed. Further, when the water flow rate control member 1 is provided in the ground by means such as placing, if the gap between the standing member 2 and the movable member 3 is large, the soil particles in the ground are caught in this gap. Sometimes. Furthermore, after the water flow rate control member 1 is provided in the ground, the water flow rate control member 1 may be bent and deformed by an action such as soil water pressure.

  When the standing member 2 such as a steel sheet pile is deformed or when soil particles are bitten, if the movable member 3 and the flange portion 21 are in close contact with each other, the movable member 3 is placed on the standing member 2. When moving in the axial direction Y, there is a risk that this movement will not go smoothly. The water flow rate control member 1 to which the present invention is applied prevents the movable member 3 and the standing member 2 from interfering with each other by providing a small gap between the movable member 3 and the flange portion 21. It is possible to smoothly move the movable member 3 in the axial direction Y by the sealing material 29 such as the water-absorbing swellable waterproofing material 29a or the sliding waterproofing material 29b.

  As shown in FIG. 12, the water flow rate control member 1 to which the present invention is applied is formed in a pair of guide materials 26 such as round steel when the first water flow holes 20 are formed in the web portion 22 such as a steel sheet pile. A holding member 25 on which a separation preventing member 25 a such as a steel plate is laid is provided on the web portion 22. The water flow rate control member 1 to which the present invention is applied is a ground side B which is the opposite side of the construction side A where the river renovation work is performed, and the movable member 3 is located inside the groove portion 24 as shown in FIG. Provided or as shown in FIG. 12B, the movable member 3 is provided outside the groove portion 24.

  As shown in FIGS. 13 to 16, the water flow control wall body 7 to which the present invention is applied is subjected to the water flow control wall body erection method to which the present invention is applied in the repair work of the river 5, etc. Thus, the permeable layer 52 in the ground is erected at the boundary between the river 5 and the surrounding ground 6.

  As shown in FIG. 13, the standing construction method of the water flow control wall body to which the present invention is applied widens the river channel having a narrow water flow area before the refurbishment and secures a river channel having a wide water flow area after the refurbishment. . As shown in FIG. 13 (a), first, the standing construction method of the water flow control wall body to which the present invention is applied is the river 5 on either or both of the left bank side and the right bank side of the river 5 after the repair. A plurality of water flow rate control members 1 are erected continuously in the extending direction.

  In the first step, as shown in FIG. 13 (b), the water flow control wall body standing construction method to which the present invention is applied is the first water hole 20 of the standing member 2 and the second passage of the movable member 3. The water flow rate control member 1 is placed in the ground in a state where the water holes 30 are arranged with the positions shifted in the axial direction Y and the first water flow holes 20 are closed by the non-water flow portions 34 of the movable member 3. Established. At this time, the standing construction method of the water flow rate control wall body to which the present invention is applied is such that the standing member 2 is provided at the boundary between the construction side A and the ground side B that is blocked during construction in the water permeable layer 52. During the construction work, the first water passage hole 20 of the standing member 2 is blocked by the non-water passage portion 34 of the movable member 3 to block the water flow from the ground side B during the construction to the construction side A. It will be a thing.

  In the water flow rate control member 1 to which the present invention is applied, the standing member 2 and the movable member 3 are integrally chucked by a vibro hammer or the like at the upper end portion 1a, and at least up to the water permeable layer 52 on the surface layer side as necessary. The impermeable layer 53 and the deep water permeable layer 52 are driven. The water flow rate control member 1 to which the present invention is applied is such that the standing member 2 and the movable member 3 are integrally chucked so that the movable member 3 is not reliably dropped from the standing member 2 at the time of placing. It becomes possible to do.

  The water flow rate control member 1 to which the present invention is applied is not limited to this, and only the standing member 2 may be chucked by a vibro hammer or the like. The water flow rate control member 1 to which the present invention is applied may be erected in the ground not only by a vibration method using a vibro hammer or the like but also by a striking method, a press-fitting method, or the like. At this time, the water flow rate control member 1 to which the present invention is applied has a plurality of joint portions 23 of the standing members 2 such as steel sheet piles fitted to each other, thereby being connected in the width direction X within the ground. It will be established.

  As shown in FIG. 14, the water flow control wall body standing construction method to which the present invention is applied is then closed by the non-water passage portion 34 of the movable member 3 in the first water passage 20 of the standing member 2. Then, excavate the construction side A on which the excavation floor mounting surface 52a is provided at a predetermined depth in a state where the water flow from the ground side B under construction to the construction side A is blocked by the surface permeable layer 52. Then, an artificial floor material such as concrete is disposed on the excavated floor mounting surface 52a to construct the artificial water channel bottom surface 55.

  At this time, as shown in FIG. 14 (a), the construction method of the water flow control wall body to which the present invention is applied is such that the construction side A and the ground side B are shielded during construction by the water permeable layer 52 on the surface layer side. By being drained and preventing the inflow of groundwater to the construction side A during construction, concrete placement work and the like can be efficiently carried out. Thereby, the water flow rate control member 1 to which the present invention is applied prevents the groundwater from flowing into the construction side A during the construction work, and realizes an efficient concrete placing work, etc. It becomes possible to quickly construct the river bed 51 in the river 5.

  As shown in FIG. 14 (b), the water flow rate control member 1 to which the present invention is applied expands by stopping water absorption between the flange portion 21 such as a steel sheet pile and the movable member 3 such as a steel plate. A sealing material 29 such as a water-absorbing swellable water-stopping material 29a that exhibits an effect may be provided. The standing member 2 is provided with a water-swellable water-stopping material 29a between the movable member 3 and the first water-passing hole 20 between the standing member 2 and the movable member 3 serving as a metal touch. Even when the groundwater enters, the water-swellable water-stopping material 29a expands in the infiltrated groundwater. The standing member 2 is not limited to this, and any sealing material 29 such as a sliding water blocking material 29b may be provided between the flange portion 21 such as a steel sheet pile and the movable member 3 such as a steel plate.

  Since the water flow rate control member 1 to which the present invention is applied can surely exert a water stop effect by the sealing material 29, the water flow rate control member 1 enters from the first water flow hole 20 between the standing member 2 and the movable member 3. As a result, the inflow of groundwater to the construction side A is reliably prevented during construction. Thereby, the water flow rate control member 1 to which the present invention is applied realizes concrete placing work and the like with improved efficiency by reliably blocking the construction side A and the ground side B during construction. It becomes possible.

  As shown in FIG. 15, the standing construction method for the water flow rate control wall body to which the present invention is applied finally, after constructing the artificial water channel bottom surface 55 in the first step, the movable member 3 is pulled up or pushed in. Thus, by moving the movable member 3 in the axial direction Y, the first water passage hole 20 of the standing member 2 and the second water passage hole 30 of the movable member 3 are overlapped with each other in the direction perpendicular to the axial center. At this time, the standing construction method of the water flow control wall body to which the present invention is applied is the second step, as shown in FIG. 15 (a), from the ground side B to the construction side A in the surface permeable layer 52. It will increase the amount of groundwater flow.

  As shown in FIG. 15 (b), the standing construction method of the water flow control wall body to which the present invention is applied is that the movable member 3 is lifted upward after the construction for constructing the river bed 51, and the movable member 3 is pivoted. By moving about 10 cm in the core direction Y, the first water passage hole 20 and the second water passage hole 30 are overlapped.

  The water flow rate control wall body 7 to which the present invention is applied is configured such that the first water flow hole 20 of the standing member 2 is blocked by the non-water flow portion 34 of the movable member 3 during the construction work, and is movable after the construction work. When the member 3 is pulled up or pushed in, the movable member 3 moves in the axial direction Y, and the second water passage hole 30 is overlapped with the first water passage hole 20. The water flow rate control wall body 7 to which the present invention is applied is not limited to this, and the first water flow hole 20 is overlapped with the second water flow hole 30 during the construction work, and the movable member 3 is moved after the construction work. The movable member 3 may move in the axial direction Y by being pulled up or pushed in, and the first water passage hole 20 may be blocked by the non-water passage portion 34 of the movable member 3.

  The water flow control wall 7 to which the present invention is applied is constructed in the ground having the water permeable layer 52 below the excavated floor mounting surface 52a. Further, the water flow control wall body 7 to which the present invention is applied has a water-permeable layer 52 on the surface layer side directly below the excavated floor mounting surface 52a and a water-impermeable layer 53 directly below the water-permeable layer 52 on the surface layer side. It is constructed in the ground where the deep water-permeable layer 52 exists in an alternating state below the water-impermeable layer 53 or in the ground where the water-impermeable layer 53 is present directly below the water-permeable layer 52 on the surface layer side. May be. Furthermore, the water flow rate control wall body 7 to which the present invention is applied is constructed in the ground on the both banks of the river having the permeable layer 52 below the excavated floor mounting surface 52a. A plurality of water flow control members 1 that are erected on the left side of the river and are connected to each other in the width direction X. As provided, on the construction side A between the plurality of water flow rate control members 1 on the right bank side of the river and the plurality of water flow rate control members 1 on the left bank side of the river, excavation flooring surface 52a is excavated at a predetermined depth. May be provided.

  Even at these times, the standing member 2 is configured such that the first water passage hole 20 is not water-permeable to the movable member 3 during the construction of excavating the construction side A on which the excavation flooring surface 52a is provided at a predetermined depth. The block 34 is closed. The movable member 3 is attached to the ground side B, which is the opposite side of the construction side A where the excavation flooring surface 52a is provided, and an artificial flooring such as concrete is disposed on the excavation flooring surface 52a, thereby After the construction for constructing the water channel bottom surface 55, the second water passage hole 30 is overlapped with the first water passage hole 20 by being pulled up or pushed in and moved in the axial direction Y. .

  In the water flow rate control member 1 to which the present invention is applied, the movable member 3 is pulled up by a crane or the like in a state where the wire 33 is hooked on the pulling jig 31. The water flow rate control member 1 to which the present invention is applied is a movable member by inserting a projecting member 28 such as a bolt projecting from the standing member 2 through a slit 32 formed in the movable member 3. The movable member 3 is controlled to have a predetermined movement distance in the axial direction Y so that 3 cannot be lifted more than necessary. Thereby, the water flow rate control member 1 to which the present invention is applied can reliably overlap the first water flow hole 20 and the second water flow hole 30. The water flow rate control member 1 to which the present invention is applied can prevent the movable member 3 from being lifted or pushed too far by causing the protruding member 28 to interfere with the slit 32.

  The water flow control wall body 7 to which the present invention is applied is one in which the movable member 3 is pulled up by a lifting jig 31 provided on the movable member 3, but is not limited thereto, and the lifting jig 31 is used as a pushing jig. By utilizing this pushing jig downwardly with a press-fitting heavy machine or the like, the pushing after the construction work may be possible. The water flow rate control wall body 7 to which the present invention is applied is configured such that the movable member 3 protrudes from the upper end of the standing member 2 to form a protruding portion, and the protruding portion is gripped and lifted by a clamp or the like. Alternatively, a hanging bracket may be fixed to a predetermined location such as an upper portion of the movable member 3, and the wire 33 may be hooked on the hanging bracket and pulled up.

  As shown in FIG. 16, the standing construction method of the water flow control wall body to which the present invention is applied is as shown in FIG. 16A by pushing the movable member 3 downward after the construction for constructing the riverbed 51. In addition, the first water passage hole 20 and the second water passage hole 30 may be overlapped by moving the movable member 3 in the axial direction Y by about 10 cm.

  As shown in FIG. 16B, the water flow rate control member 1 to which the present invention is applied is separated from the lower end of the movable member 3 by about 10 cm in the axial direction Y, and the lower stopper 27 is provided on the standing member 2. Thus, the movable member 3 can be controlled to a predetermined movement distance in the axial direction Y so that the movable member 3 is not pushed more than necessary. Thereby, the water flow rate control member 1 to which the present invention is applied can reliably overlap the first water flow hole 20 and the second water flow hole 30.

  At this time, the water flow control wall body standing construction method to which the present invention is applied is such that the first water flow hole 20 and the second water flow hole 30 are overlapped, and the construction side after the construction is performed on the water permeable layer 52 on the surface layer side. When A and the ground side B are passed, groundwater can be made to flow into the construction side A from the ground side B after construction. Thereby, the water flow control wall body 7 to which the present invention is applied realizes the flow of groundwater between the construction side A and the ground side B after the construction, thereby inhibiting the flow of groundwater in the surface-side permeable layer 52. Without taking into account the subsidence of the riverbed ground and the deterioration of the natural environment, it is possible to perform the revetment with the standing member 2 such as a steel sheet pile.

  In the water flow rate control wall body 7 to which the present invention is applied, the second water flow hole 30 and the first water flow hole 20 do not need to have the same shape as shown in FIG. The second water hole 30 may have an open shape in which the first water hole 20 is included in order to ensure the same amount of water flow as the first water hole 20, for example, the axial direction Y It may be formed in the shape of a substantially long hole extending in the direction. When the movable member 3 is pulled up, if the pulling force is too large, the protruding member 28 or the like may be broken and the pulling amount may increase. Even in such a case, the second water passage hole 30 is formed in a substantially long hole shape, and the first water passage hole 20 is included in the second water passage hole 30. It is possible to increase the probability that one water hole 20 overlaps.

  The water flow control wall 7 to which the present invention is applied ensures that the construction side A and the ground side B are impermeable during construction to construct the river bed 51, and the construction side A and the construction side A after construction to construct the river bed 51. By realizing the distribution of groundwater with the ground side B, it is possible not only to efficiently carry out the concrete placement work when constructing the riverbed 51, but also for the river 5 in consideration of the deterioration of the natural environment, etc. It becomes possible to build a revetment.

  As shown in FIG. 12, the water flow rate control member 1 to which the present invention is applied bears a large supporting force as a revetment compared to the web portion 22 by forming the first water flow hole 20 in the web portion 22. It is possible to form the first water hole 20 for constructing a revetment in consideration of the settlement of the riverbed ground and the deterioration of the natural environment without causing a cross-sectional defect in the flange portion 21 to be performed.

  As mentioned above, although the example of embodiment of this invention was demonstrated in detail, all the embodiment mentioned above showed only the example of actualization in implementing this invention, and these are the technical aspects of this invention. The range should not be construed as limiting.

1: Water flow rate control member 1a: Upper end part 2: Standing member 20: 1st water flow hole 21: Flange part 22: Web part 23: Joint part 24: Groove part 25: Holding member 25a: Separation prevention member 26: Guide material 27: Lower stopper 28: Protruding member 29: Sealing material 29a: Water-swelling / swelling water-stopping material 29b: Sliding water-stopping material 3: Movable member 30: Second water passage hole 31: Lifting jig 32: Slit 33: Wire 34 : Non-water-permeable part 5: River 51: River bed 52: Permeable layer 52a: Excavation flooring surface 53: Impervious layer 54: Revetment concrete 55: Artificial channel bottom surface 6: Peripheral ground 7: Water flow control wall body X: Width direction Y: axial direction Z: depth direction

Claims (31)

A water flow control wall constructed in the ground having a water permeable layer,
A plurality of water flow rate control members that are erected in the ground and connected in the width direction;
The water flow rate control member has a standing member provided at the boundary between the construction side and the ground side, and a movable member attached to a predetermined range in the axial direction of the standing member,
The movable member is formed with one or more second water passage holes penetrating in the direction perpendicular to the axis,
The standing member is formed with one or more first water passage holes penetrating in a direction orthogonal to the axis, and the first water passage hole is disposed in a water permeable layer in the ground, and the movable member is disposed on the axis. A water flow rate control wall body, characterized in that a holding member is provided for holding in a movable state in a direction. During the construction work, the upright member has the first water passage hole blocked by the non-water passage portion of the movable member,
The movable member is lifted or pushed in after construction, and moves in the axial direction so that the second water passage hole is overlapped with the first water passage hole. The water flow control wall body according to claim 1. During the construction work, the upright member is overlapped with the first water hole and the second water hole,
The movable member is lifted or pushed in after construction, and moves in the axial direction, and the first water passage hole is blocked by the non-water-permeable portion of the movable member. The water flow control wall body according to claim 1. It is constructed in the ground with a permeable layer below the floor for excavation flooring,
The standing member is closed during the construction of excavating the construction side where the excavation flooring surface is provided at a predetermined depth, and the first water passage hole is blocked by the non-water passage portion of the movable member,
The movable member is moved up in the axial direction by being pushed up or pushed in after the construction work in which artificial flooring such as concrete is arranged on the excavation flooring surface and the bottom surface of the artificial waterway is constructed. The water flow rate control wall body according to claim 1, wherein the second water flow hole is overlapped with the first water flow hole. It has a surface-side permeable layer directly under the excavated floor and has a water-impermeable layer directly under the surface-side permeable layer, and the deep-layer permeable layer exists in an alternating layer below the impermeable layer. It is constructed in the ground, or in the ground where the impermeable layer is present just below the surface-side permeable layer,
The standing member is closed during the construction of excavating the construction side where the excavation flooring surface is provided at a predetermined depth, and the first water passage hole is blocked by the non-water passage portion of the movable member,
The movable member is moved up in the axial direction by being pushed up or pushed in after the construction work in which artificial flooring such as concrete is arranged on the excavation flooring surface and the bottom surface of the artificial waterway is constructed. The water flow rate control wall body according to claim 1, wherein the second water flow hole is overlapped with the first water flow hole. It is constructed in the ground on both sides of the river with a permeable layer below the excavated floor,
A plurality of water flow control members that are erected on each of the grounds on the right bank side of the river and connected in the width direction, and a plurality of water flow members that are erected on each of the grounds on the left bank side of the river and are connected in the width direction A control member,
On the construction side between the plurality of water flow rate control members on the right bank side of the river and the plurality of water flow rate control members on the river left bank side, a drilling flooring surface is provided by drilling at a predetermined depth,
The standing member is closed during the construction of excavating the construction side where the excavation flooring surface is provided at a predetermined depth, and the first water passage hole is blocked by the non-water passage portion of the movable member,
The movable member is moved up in the axial direction by being pushed up or pushed in after the construction work in which artificial flooring such as concrete is arranged on the excavation flooring surface and the bottom surface of the artificial waterway is constructed. The water flow rate control wall body according to claim 1, wherein the second water flow hole is overlapped with the first water flow hole. The water flow rate control wall body according to any one of claims 1 to 6, wherein the movable member is attached to a ground side that is opposite to a construction side on which a drilling flooring surface is provided. 8. The water flow control wall according to claim 1, wherein the movable member is a steel having a substantially flat surface such as a steel plate, an angle steel, or a grooved steel. The water flow rate control wall body according to any one of claims 1 to 8, wherein the movable member is provided with a lifting jig that enables lifting after construction. The water flow rate control wall body according to any one of claims 1 to 8, wherein the movable member is provided with a pushing jig that enables pushing after the construction. The said holding member has a guide member which restrains the said movable member to the width direction, and a separation prevention member which restrains the said movable member to an axial center orthogonal | vertical direction, The any one of Claims 1-10 characterized by the above-mentioned. The water flow control wall body described in 1. The water flow rate control wall body according to any one of claims 1 to 11, wherein a sealing material is provided between the standing member and the movable member. The water flow control wall body according to claim 12, wherein the sealing material is a water-swelling water-stopping material that expands by water absorption and exhibits a water-stopping effect. The water flow rate control wall body according to claim 12, wherein the sealing material is a sliding water-stopping material that exhibits a lubricant function such as petrolatum paste, grease, and petroleum jelly. The water flow rate control wall body according to any one of claims 1 to 14, wherein the standing member is provided with a lower stopper that prevents the movable member from falling off. The water flow control wall according to any one of claims 1 to 15, wherein the standing member is a steel sheet pile. The water flow control wall according to claim 16, wherein the standing member is attached to either or both of a flange portion and a web portion of a steel sheet pile. The water flow rate control wall body according to any one of claims 1 to 17, wherein the standing member is provided with a protruding member as being inserted into a slit formed in the movable member. The water flow rate control wall body according to any one of claims 1 to 18, wherein the second water flow hole is formed in a substantially long hole shape extending in an axial direction of the movable member. It is a standing construction method of a water flow control wall body standing on a permeable layer in the ground,
A plurality of standing members formed with one or more first water passage holes penetrating in one or more axial directions orthogonal to the axis and a movable member formed with one or more second water passage holes penetrating in the one or more axis orthogonal directions. With the water flow rate control member attached to the movable member in a predetermined range in the axial direction of the standing member, the first water passage hole is closed by the non-water passage portion of the movable member, In addition to excavating the construction side where the excavation flooring surface is provided at a predetermined depth, artificial flooring such as concrete is disposed on the excavation flooring surface, A first step of constructing the bottom of the waterway;
After constructing the bottom surface of the artificial water channel in the first step, the movable member is pulled up or pushed in to move the movable member in the axial direction so that the second water passage hole is formed in the first water passage. A standing method for constructing a water flow control wall body, comprising a second step of increasing the water flow rate from the ground side to the construction side, superimposed on the water flow hole. A water flow rate control member installed on the permeable layer in the ground,
A standing member provided at the boundary between the construction side and the ground side, which is shielded during construction, and a movable member attached to a predetermined range in the axial direction of the standing member,
The standing member is provided with a holding member that holds one or more first water passage holes penetrating in the direction perpendicular to the axis, and holds the movable member in a state movable in the axis direction.
The movable member is formed with one or more second water passage holes penetrating in a direction perpendicular to the axis. A water flow rate control member installed on the permeable layer in the ground,
A standing member provided at the boundary between the construction side and the ground side, which is shielded during construction, and a movable member attached to a predetermined range in the axial direction of the standing member,
The standing member is formed with a first water passage hole penetrating in a direction orthogonal to the axis, and the first water passage hole is blocked by the movable member during construction work, thereby blocking water passage during construction work. As well as
The movable member is formed with a second water passage hole penetrating in the direction perpendicular to the axis, and after the construction work, the movable member is moved in the axis direction, whereby the first water hole and the second water passage hole are moved. A water flow rate control member that is superposed on a hole and allows water to flow after construction. The movable member pushes the movable member downward after the construction work and moves the movable member so that the first water passage hole and the second water passage hole are overlapped to allow water to pass therethrough. The water flow rate control member according to claim 21 or 22. The movable member is configured to allow the first water passage hole and the second water passage hole to overlap each other by allowing the movable member to be lifted and moved upward after construction work. The water flow rate control member according to claim 21 or 22. The water flow rate control member according to claim 21, wherein the holding member includes a guide member that restrains the movable member in a width direction and a separation prevention member that restrains the movable member in a direction orthogonal to the axis. . The water flow rate control member according to any one of claims 21 to 25, wherein a sealing material is provided between the standing member and the movable member. The water flow rate control member according to claim 26, wherein the sealing material is a water-swellable water-stopping material that expands by water absorption and exhibits a water-stop effect. 27. The water flow rate control member according to claim 26, wherein the sealing material is a sliding water-stopping material that exhibits a lubricant function such as petrolatum paste, grease, and petroleum jelly. The water flow rate control member according to any one of claims 21 to 28, wherein the standing member is provided with a lower stopper that prevents the movable member from falling off. The water flow control member according to any one of claims 21 to 29, wherein the standing member is provided with a protruding member as being inserted into a slit formed in the movable member. The water flow rate control member according to any one of claims 21 to 30, wherein the second water flow hole is formed in a substantially long hole shape extending in an axial direction of the movable member.

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