JPS62153410A - Installation work of water-pressure steel pipe - Google Patents

Abstract

PURPOSE:To make the installation of water-pressure steel pipes in a skew pit easier by a method in which a working chamber is provided in at least one point in a skew pit, single pipes are connected in the working chamber to form an extended pipe, and the extended pipe is gradually lowered down into the pit. CONSTITUTION:Rails 2 are set in a skew pit 1 and a working chamber 3 is provided in the pit 1. Single pipes 19 are carried into the chamber 3 and joined by welding while being supported by a supporter 5 to form an extended pipe 21. With the pipe 21 so formed supported by the annular moving beam 8 of the supporter 5, the beam 8 is moved downwards in the pit 1 and the pipe 21 is lowered by a given distance on the rails 2. By repeating the processes, water-pressure steel pipes can be installed in the pit 1.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a method for installing a penstock.

2. Description of the Related Art Conventionally, as shown in Fig. 20, a method of installing a relatively small-diameter penstock pipe into a long inclined shaft involves excavating a inclined shaft C3η with a considerably larger inner diameter than the iron pipe to be installed, and inserting the penstock into the shaft. ) on the rail, and carry it into the single pipe through the entrance (to) installed in the horizontal part of the tunnel that connects to the inclined shaft 0η, place it on the carry-in trolley (to), and use the winch installed at the top of the mine to transport it to the carry-in trolley. To install the single pipe (2) with (2), carry it to the position, lower the single pipe (2), pull up the trolley, and join the single pipe (2) to the already installed iron pipe by hand welding. Iron pipes were installed by repeating the process.

The problem that the invention seeks to solve The prior art described above had the following problems.

(a) The joint location between the single pipe and the iron pipe that has already been installed changes as the installation progresses, so the setup must be changed each time, which is time-consuming.

(b) Since the work of joining iron pipes is carried out inside the inclined shaft, the inner diameter of the inclined shaft must be made large enough to accommodate the work. Therefore, the cost of diagonal shaft excavation becomes high.

(c) It is inconvenient for workers to get to the work place.

((To) The work location is different each time a single pipe is joined, so the scaffolding is inconsistent and work efficiency is poor.

The present invention is an attempt to solve the problems of conventional construction methods when installing relatively small-diameter penstock pipes into inclined shafts.

Means for Solving the Problems In order to solve the above-mentioned problems, the penstock installation method of the present invention includes a loading port for carrying in a single pipe and a moving device for moving an extension pipe at at least one location of the inclined shaft. A working room is set up, and in the working room, the single pipe carried in from the loading port is joined to an elongated pipe, and then the elongated pipe is moved into the inclined shaft by the moving device. This method is characterized by repeatedly performing the single pipe joint-extension port movement operation to install the iron pipe into the inclined shaft.

A series of operations such as carrying in a single pipe, joining it, and moving an extension pipe formed by joining it into the inclined shaft are repeated in a working chamber between the end and the bottom end of the working inclined shaft. It is possible to install the penstock into the inclined shaft very easily and at low cost.

Example An embodiment of the present invention will be described based on the drawings.

As shown in FIG. 1, rails (2) are laid in the diagonal shaft (1) to facilitate the movement of extension pipes (pipe connecting single pipes) within the diagonal shaft (1). A working chamber (3) is provided in at least one arbitrary location between the upper end and the lower end of the inclined shaft (1).

The work room (3) has an entrance (4) for carrying the single pipe into the interior.
) and a moving device (5) for moving the extension tube.
) are installed. The installation position of the work room (3) is the first
In the figure, it is provided slightly above the center between the upper end and the lower end of the inclined shaft (1), but it may be provided near the upper end or near the lower end if necessary. The number of working chambers (3) may be one or more depending on the performance of the moving device (5) and the length of the inclined shaft.

The moving device (5) is placed in the work room (3) as shown in FIG.

Although it is installed along the slope of the working chamber (3) or the inclined shaft (1), it is shown horizontally in FIGS. 3 to 19. Inside the work room (3): As shown in Figure 8, the installed moving device (5) consists of an upper support beam (6), a lower support beam (7), an annular moving beam (8), and a lifting device (2). Each beam has a built-in clamping device (9). The upper support beam (6
) clamps the extension tube when moving it upward.

Further, the lower support beam (7) holds the extension tube when it is moved downward, and both of them are fixed in the working chamber (3).

Normally, it is firmly fixed to the floor side inside the work room (3).

Support on the ceiling side (6a), (7a) If possible, each support beam (
6).

The diagonal reinforcing members (6b) and (7b) supporting (7) may be omitted. Both support beams +6), 5 between (7)
A lifting device @ for moving the annular moving beam (8) is provided. When moving the annular moving beam (8), the elevating device (2) is composed of an elevating frame that supports the moving annular beam (8), and a hydraulic cylinder σ that serves as a driving source for moving the annular moving beam (8). Eight sets of (6) are provided. In other words.

As shown in Figures 4 and 5 (1 set at the top) (
12a) and one set each on the lower left and right sides (12b)
.

(12c). This improved part: Right side lifting device (12
a).

The elevating frames (18a) and (18b) in (12b) are
It is fixed to the upper and lower support beams (6) and (7), and is attached to the lifting frame (18) of the left lifting device (12c).
c) has a downwardly movable structure (see FIG. 5) so that the single pipe a1 can be easily taken in from the loading port (4).

The number of sets of the lifting device (6) may be 2 or 4 or more depending on the capacity. A plurality of bottle holes αη are arranged in a row in the elevating flame roller, and the hydraulic cylinder α◆
One end of the annular moving beam (G) can be joined with a pin H, or when stopping the movement of the annular moving beam (G), it can be joined with a pin (H). The other end of the hydraulic cylinder α4 has an annular moving beam (8
) and pin joint (8p)L, and the expansion and contraction of the hydraulic cylinder α4 raises and lowers the annular moving beam (8) with inchworm-like steps. For example, in FIG. 8, if the annular moving beam (8) is to be moved to the right, the elevating frame RO and the annular moving beam (8) are connected with a pin (T), and the pin Q is removed. Next, extend the hydraulic cylinder σ4, align one end of the hydraulic cylinder into which the pin aO was inserted with the bottle hole αη on the right, and connect it there with the pin OQ. In this state, remove the pin (to), retract the hydraulic cylinder α4, move the annular moving beam (8) pin-joined (8p) to the other end of the hydraulic cylinder Q4 to the right, and remove the pin (2). Align the pin hole of the annular moving beam (8) with the right pin hole of the lifting frame σJ, and connect the pin (T). By repeating this operation, the annular moving beam (8) can be moved with inchworm-like steps. Also, when moving the annular moving beam <8) to the left,
Follow the steps in the reverse order of step h. In this embodiment, moving the annular moving beam (8) to the left means moving it toward the first part of the inclined shaft. M is a running rail that facilitates movement of the annular moving beam (8).

The upper support beam (6), the lower support beam (7), and the annular moving beam (8) each have three built-in clamping devices (9), and the clamping devices (9) have two jacks Q0 and It consists of a stopper receiver αυ, and the two jacks OQ are attached in parallel to the stopper receiver αυ.

It is fixed to each of the beams. A groove (lla) is provided at the tip of the stopper holder Q sword, and the jack QO is operated so that the stopper rod attached to the single tube α field is fitted into this groove (lla). ? Hold υ. The stopper (A) attached to the single pipe α is
There are 8 locations on the circumference and 2 locations in the longitudinal direction according to the clamping device (9).
Although it is provided in some places, it also serves as reinforcement for the single-tube α-kettle, and may be provided all around the circumference. Further, the stopper (4) is connected to the inclined shaft (1).
When the extension tube (2η) is moved on the rail (2) laid inside, the extension tube (c) is prevented from being damaged by sliding on the rail (2).

Next, the procedure for installing the extension tube, that is, the procedure for moving the extension tube downward (to the right in the figure) will be explained based on FIGS. 10 to 12.

First, the first single pipe α-yu is carried in through the loading port (4) and attached to the moving device (5). In this case, if the elevating frame (18c) on the loading port (4) side is lowered, it will be easier to install the tube in a single tube. As a method for attaching the single pipe Ql to the moving device (5), for example, the work room (3) and the loading entrance (4
), place a plurality of chain blocks at appropriate positions, and adjust the suspension of each chain block.

The single pipe σ9 is held by the holding device (9) of the lower support beam (7). In other words, when the single tube is a, the tsuno f is four.

It is caught and clamped by the groove of the stopper receiver αp of the clamping device (9). Next, the second single pipe α1 is installed into the moving device (5) through the loading port (4), and after being aligned with the previously installed single pipe, and then temporarily attached, welded and joined to form the extension pipe Q. do. As for welding.

Automatic welding can also be easily performed. after that.

The annular moving beam (8) is moved, the clamping device (9) of the annular moving beam (8) is used to clamp the stopper (1) of the second single pipe alpha clay, and the lower support beam (7) is released from the grip. and set you free. In this state, the elongated tube (toward) is moved to the right (downward) by the elevating device as described above, as if it were an inchworm.

FIG. 12 shows the moved state. Next, the extension tube (goods) is clamped by the lower support beam (7), and the annular moving beam (8) is freed. Furthermore, the eighth single pipe α9 is carried in from the carrying-in port (4) and attached to the moving device (5). This state is shown in FIG. 1O. Repeat the above procedure of joining the single pipe and moving the extension pipe, and when the extension pipe reaches a predetermined length, mortar is injected into the gap between the inner surface of the inclined shaft (1) and the outer surface of the extension pipe eD, and the extension pipe is filled with mortar. (c) will be anchored and used as installed iron pipe property.

Next, iron pipes are also installed upwards (to the left in the figure).

That is, as shown in Figures 18 to 15, the upper support beam (6) is used instead of the lower support beam (7), but the same procedure as the above downward direction is used to move the upper support beam upward. The detailed explanation will be omitted, but push up the extension pipe, join the last single pipe Ql, and join the extension pipe pushed upward and the installed iron W (material) at the bottom. The installation of the entire penstock is completed by injecting mortar into the gap between the inner surface of the upper inclined shaft (1) and the outer surface of the extension w.

16 to 19 show another example of the moving device used in the present invention. The moving device (5), instead of the moving device (5) in the above example, has an upper support beam (6) and a lower support beam (7) fixed to the rock (υ), and also has a hydraulic cylinder in the lifting device (6). There are two of each, which has excellent lifting performance and allows the length of the working chamber (3) to be shortened, making excavation easier.

Effect of the invention The present invention has the following special effects.

(6) Single pipe joining of iron pipes - work to move extension pipes can always be done in the same place (work room), and there is no need to change the work place as the iron pipe installation progresses, unlike in the past, eliminating the hassle of one-step changeovers. .

(Since work such as joining the q-iron pipes is carried out only in the work room, there is no need to make the inside of the inclined shaft large enough to carry out the work, as in the past, and the cost of excavating the inclined shaft is reduced.

? 1 worker can easily go to the work area.

2) The work room can be arranged to make it easier to work, improving work efficiency and reliability.

(The port work room can be installed at any location between the top and bottom ends of the inclined shaft, so a convenient location for transporting equipment and materials can be selected.
Work efficiency is greatly improved.

[Brief explanation of drawings]

Figure 1 is a schematic configuration diagram showing one embodiment of the construction method of the present invention, Figure 2
The figure is a schematic cross-sectional view taken along the line A-A in FIG. 1, FIG. 8 is a side view showing an example of the working chamber, FIG. 6 is a sectional view taken along line C-C in the figure, FIG. 6 is a sectional view taken along line D-D in FIG. 8, and FIG. 7 is a sectional view taken along line E--
8 is a sectional view taken along the line F-F in FIG. 4, FIG. 9 is a bottom view of FIG. 8, and FIGS. 10 to 15 are side views showing the construction procedure of the present invention. Figures 1θ to 1
FIG. 2 shows the case where the extension tube is moved to the bottom, and FIGS. 18 to 15 show the case where the extension tube is moved to the top. Fig. 16 is a side view of another example of the working chamber, Fig. 17 is a sectional view taken along the line GG in Fig. 16, Fig. 18 is a sectional view taken along the line H-H in Fig.
FIG. 9 is a sectional view taken along line 11s in FIG. 16, and FIG. 20 is a schematic explanatory diagram of the conventional construction method. (1)--Slanted shaft, (2)...Rail, (3)...
Work room, (4)... Loading entrance, (5) (M>...
・Movement device, (6)... Upper support beam, (7)... Lower support beam, (8)... Annular moving beam, (9)... Clamping device, αQ... Jacket, ( b)...stopper holder,
@... Lifting device, (13... Lifting frame, α→・
...Hydraulic cylinder, (g)...runs J'jan...
・Single pipe % (1)...Stopper, Yu/°/Extension pipe, (transfer)...Installed iron pipe.

Claims (1)

[Claims] 1. Install a work room in at least one location of the inclined shaft, which is equipped with an entrance for carrying in the single pipe and a moving device for moving the extension pipe, and extend the single pipe brought in from the said entrance in the work room. A penstock iron pipe installation method characterized in that the iron pipe is installed in the inclined shaft by repeatedly performing a single pipe joining-extension pipe movement operation, in which the iron pipe is joined to a pipe and then the extension pipe is moved into the inclined shaft by the moving device. .