JP4809300B2 - Covering method using tunnel and tunnel construction method - Google Patents

Description

  The present invention relates to a lining method for constructing an outer shell lining body using a previously constructed shaft, and a tunnel construction method for constructing a tunnel surrounded by the outer shell lining body.

There is a method described in Patent Document 1 (Japanese Patent Laid-Open No. 2002-266598) as a lining method for constructing an outer shell lining body using a shaft and a tunnel construction method after the construction.
This method is an application of the shield method and is constructed in the following procedure.
(1) A plurality of guide shafts are constructed in parallel at an arbitrary distance from the starting shaft to the reaching shaft.
(2) A continuous water stop wall is constructed in advance from the inside of the guide shaft to the basement, and a guide rail is laid on the upper portion of the stop wall standing in the guide shaft.
(3) Start the shield machine from the starting shaft, guide the direction of travel of the shield machine with the guide rail in the guide tunnel, and cut part of the support structure of the guide tunnel with the crushing rotor provided in the shield machine Then, excavate the ground between the two shafts.
(4) After digging a predetermined distance, an outer shell lining body is constructed by bagging concrete lining at the rear of the shield machine.
(5) After constructing the outer shell lining body as the roof portion of the target underground space in this way, excavate a natural ground between the water blocking walls in the adjacent guide shaft, and make this the next adjacent The tunnel with a large cross section is constructed in which the outer shell covering body between adjacent guide mines is a section of the roof, which is repeated between the guide pits.

However, this has the following problems.
(A) Since the water stop wall extending from the inside of the guide shaft to the underground is constructed over the entire length of the guide shaft, an auxiliary construction method for constructing the stop wall from the inside of the guide shaft is necessary. I need.
(B) The water blocking wall will be a water blocking wall when excavating the lower side of the outer shell lining body after construction, but with the shield tunneling machine cutting a part of the supporting structure of the shaft No consideration is given to the water stoppage when excavating the natural ground between them with a shield machine, that is, the water stoppage for the guide shaft to be cut.
(C) As the shield excavator is driven along the guide rail at the top of the water barrier wall, the ground is excavated, and the outer shell lining body is constructed from the rear of the shield excavator by bagging concrete lining. Only the outer shell lining body that forms the roof part of underground spaces such as underground parking lots can be constructed.
(D) It is necessary to make the guide mine have a sufficiently large cross section that can construct a water blocking wall from the inside to the basement, and it is necessary to make the bottom open type without a cover at the bottom. Cannot be easily constructed with off-the-shelf materials such as fume tubes.
JP 2002-266598 A

  The object of the present invention is to make the outer shell covering body simple and economical by using only the guide pit without using a special auxiliary method from the inside of the guide pit, and also by propulsion while stopping water on the guide pit. An object of the present invention is to make it possible to efficiently construct an outer shell lining body using a guide shaft in the side wall portion and the bottom portion of the underground space as well as the roof portion of the underground space.

  The lining method of the present invention according to claim 1 is provided with parallel water stop rails along at least one inner surface of two guide shafts along the guide shaft, and the guide shaft cover between the stop rails. The excavator with a length between the two guide shafts is propelled through the cover member, and the water stop joint of this excavator is paralleled in one guide shaft. While slidably fitting with a water stop rail to stop water, the cutting lining part of one guide mine is cut with an excavator together with the cutting lining part of the other guide pit, The lining members are sequentially pushed in and the outer shell lining body is constructed between the two guide shafts.

  The invention according to claim 2, which is an embodiment of the present invention, propels the lining member while the water-stopping joint portion of the lining member is also slidably fitted to the water-stop rail in the guide shaft to stop the water.

  Similarly, in the invention according to claim 3, the water stop plate protruding from the excavator is made to precede the water stop joint portion of the excavator in the guide shaft to stop water between the cut lining portion.

  In the invention according to claim 4, one of the two guide shafts is provided with parallel water stop rails and stopped by fitting with a water stop joint portion of the excavator, and the other guide shaft is provided. The water is stopped by this partition, with the portion outside the partition provided inside as a cutting lining portion that is easy to cut.

  In the invention according to claim 5, after the outer shell lining body is constructed, the inside of the guide mine is filled with a filler.

  In the tunnel construction method of the present invention according to claim 6, the upper and lower and right and left outer shell lining bodies are constructed and closed by the above-described lining method between the four upper, lower, left and right guide shafts, and then surrounded by these. Excavate the inside.

  According to the lining method of the present invention, on the inner surface of the guide shaft, a parallel water stop rail is provided along the guide shaft, and the cutting lining portion capable of cutting the guide shaft cover portion between the water stop rails. The excavator is propelled by a propulsion method through the lining member while cutting the cutting lining, and the water stop joint of the excavator is slidably fitted with the parallel water stop rail. Since the excavation between the guide shafts is excavated while stopping the water, the outer shell lining body can be easily and economically used only by the guide shaft without using any special auxiliary construction method from the inside of the guide shaft. Efficient construction can be established by the propulsion method while water is stopped.

  According to the second aspect of the present invention, the water-stopping joint portion of the lining member is also slidably fitted to the water-stopping rail in the guide shaft, and the lining member is propelled while water is stopped. It is also possible to prevent water from entering between the guide shaft whose part has been cut and the lining member serving as the outer shell lining body.

  According to the invention of claim 3, since the water stop plate protruding from the excavator is made to precede the water stop joint portion of the excavator in the guide shaft and the water is cut between the cutting lining portion, The cutting lining portion can be cut while water is stopped with a water stopping plate between the cutting lining portions of the excavator, that is, while the water stopping at the tip of the excavator is ensured.

  According to the fourth aspect of the present invention, the other of the two guide shafts is stopped at this partition, with the portion outside the partition provided inside as a cutting lining portion that is easy to cut. Since water is used, a simple water stop can be used instead.

  According to the fifth aspect of the present invention, after the outer shell covering body is constructed, the guide mine is filled with the filler, so that the guiding shaft can be made a part of the outer shell covering body after completion.

  In the tunnel construction method of the present invention according to claim 6, after the upper and lower, left and right outer shell linings are constructed and closed as described above, the inside surrounded by these is excavated, It can be built efficiently and economically.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an overall view of an embodiment of the present invention.
Four vertical, horizontal, and horizontal guide shafts 2, 3, 4, and 5 from the start shaft 1 are constructed with a fume pipe by the propulsion method.
Now, the case where an outer shell covering body is constructed between the left and right two guide shafts 2 and 3 among these four guide shafts 2, 3, 4 and 5 is taken as an example.

  As shown in FIGS. 2 and 3, the two guide shafts 2 and 3 are provided with slits 7 in the axial direction of the fume pipe 6 to have a C-shaped cross section, and the slits 7 are filled with poor blending mortar 8. Although the compensated guide mine lining part is made into the cutting lining parts 2a and 3a capable of cutting, the internal structure is different.

  That is, as shown in FIG. 3 and FIG. 5, the guide shaft 2 is provided with a partition wall 9 inside the fume pipe 6, and is filled with the poorly mixed mortar 8 between the slit 7 and the partition wall 9 to provide a cutting lining. Part 2a is formed. In addition, as shown in FIG. 6, when the strength cannot be maintained in the cutting lining portion 2a by the partition wall 9 and the poor blending mortar 8, the cutting reinforcing member 10 made of a material that can be cut is provided on the outside thereof at a required interval. Provide. Further, a reinforcing steel plate 7a is provided so as to cover the inner and outer surfaces around the slit 7 including the opening edge.

  On the other hand, as shown in FIGS. 3, 4, and 7, the shaft 3 is provided with two water-stop rails 11, 12 parallel to the slit 7 on the inner surface, and the water-stop rails 11, 12 extending from the slit 7. The cutting lining portion 3a is formed by filling the poor blending mortar 8 partway through. The side edges of the water stop rails 11 and 12 are C-shaped fitting joint portions 11a and 12a.

  The excavator 13 for excavating between the two guide shafts 2 and 3 is a flat plate excavator having a length extending between the two guide shafts 2 and 3, and is a rotary type provided on the front surface thereof. The ground is excavated by the cutter 14, and the cutting lining portions 2a and 3a of the two guide shafts 2 and 3 are cut. The excavator 13 is provided with water-stop joint portions 15 and 16 that are slidably fitted to the fitting joint portions 11 a and 12 a of the water-stop rails 11 and 12 in the guide shaft 3. The cutter 14 is driven from the inside of the guide shaft 3 by a cutter driving motor 17 provided at one end of the excavator 13.

  When constructing an outer shell covering body between the two guide shafts 2 and 3, the excavator 13 is started from the starting vertical shaft 1, and a flat plate-shaped covering member 18 having a length extending between the guide shafts 2 and 3 is provided. The excavator 13 is installed behind the excavator 13 and pushed from the start shaft 1 by a plurality of propulsion jacks 19 to propel the excavator 13 together with the lining member 18. The propulsion jack 19 takes a reaction force with a reaction force wall 1 a installed in the start shaft 1.

  During the propulsion, the water stop joint portions 15 and 16 of the excavator 13 are slidably fitted to the fitting joint portions 11a and 12a of the water stop rails 11 and 12 in the guide shaft 3, and the lining member 18 A water-stop joint portion (not shown) provided at one end is also slidably fitted to the fitting joint portions 11a and 12a of the water-stop rails 11 and 12. Further, as shown in FIG. 8, a water stop plate 22 is projected forward from one side end of the excavator 13 in the guide shaft 3. A wire brush, putty grease or the like is installed on the water stop plate 22.

  When the excavator 13 and the lining member 18 are simultaneously propelled in such a state, the ground between the two guiding shafts 2 and 3 is excavated in a slit shape, and the cutting lining portion of the guiding shafts 2 and 3 2a and 3a are cut, and at that time, the water is stopped by the partition wall 9 in the guide shaft 2, and in the guide shaft 3, the water stop plate 22 advances in advance so that the cutting lining portion 3a immediately before cutting is cut off. The cutting lining portion 3a can be cut while water is stopped by the water stopping plate 22, and the water stopping joint portions 15 and 16 of the excavator 13 and the water stopping joint portions 20 and 21 of the lining member 18 are connected to the water stopping rail. By being slidably fitted to the fitting joint portions 11a and 12a of 11 and 12, it is possible to prevent water from entering through the gap formed after the cutting lining portion 3a is cut. In addition, in the shaft 3, the reinforcing support 23 is sequentially built behind the excavator 13.

  As the excavator 13 proceeds with excavation, the lining member 18 is propelled while being sequentially added, thereby constructing a flat outer shell lining body 24 by the lining member 18 between the two guide shafts 2 and 3. .

  After constructing the outer shell covering body 24 between the guide shafts 2 and 3 in this way, as shown in FIGS. 9 (A) to 9 (E), between the guide shaft 2 and the guide shaft 4, Similarly, between the mine 3 and the mine shaft 5, between the mine shaft 4 and the mine shaft 5, the outer shell covering bodies 25, 26, and 27 are constructed. After filling the filler 28 and closing the upper, lower, left, and right outer shell covering bodies 24, 25, 26, and 27, excavating the interior surrounded by these, a tunnel having a rectangular large cross section is completed.

  In the above-described embodiment, one of the two guide shafts 2 and 3 is provided with the water stop rails 11 and 12 and fitted with the water stop joint portions 15 and 16 of the excavator 13. The other water guide shaft 2 was stopped by providing a partition wall 9, but both the water stoppage by fitting the water stop joint portions 15 and 16 of the excavator 13 and the water stop rails 11 and 12 was performed. This may be done for the guide shafts 2 and 3.

  The lining method of the present invention can be applied not only to tunnel construction but also to a tunnel widening method and the like.

1 is an overall perspective view of an embodiment of the present invention. It is the horizontal sectional view. It is sectional drawing of the AA line position in FIG. Similarly it is sectional drawing of a BB line position. It is a perspective view which shows the structure of the guide shaft side which stops water with a partition among two guide shafts. It is a perspective view which shows the other example. It is a perspective view which shows the structure of the guide shaft side which stops water by fitting with the water stop joint part and water stop rail of an excavator among two guide shafts. FIG. 8 is a perspective view of a state in which a water stop plate is projected forward from one end of the excavator in addition to the state of FIG. 7. (A) to (E) from the construction of the top, bottom, left, and right guide shafts to the construction of the top, bottom, left, and right outer shell lining bodies, and the excavation of the inside surrounded by them to complete the tunnel with a rectangular large cross section It is explanatory drawing shown in order of.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Start vertical shaft 1a Reaction wall 2/3/4/5 Guide shaft 2a / 3a Cutting lining part 6 Hume pipe 7 Slit 8 Poor compounding mortar 9 Partition 10 Cutting reinforcement member 11/12 Water stop rail 11a / 12a Fitting joint Part 13 Excavator 14 Cutter 15/16 Water-stop joint part 17 Cutter drive motor 18 Cover member 19 Propulsion jack 22 Water stop plate 23 Reinforcement support 24/25/26/27 Outer shell cover body

Claims (6)

  A parallel water-stop rail is provided on the inner surface of at least one of the two guide shafts along the guide shaft, and the guide-hole lining portion between the water-stop rails is set as a cutting lining portion that can be cut. The excavator having a length between the two guide shafts is propelled through the lining member, and the water stop joint portion of the excavator is slidably fitted with the parallel water stop rail in one guide shaft. While cutting off the water, excavating between the two guide shafts while cutting the cutting lining portion of one guide shaft together with the cutting lining portion of the other guide shaft with an excavator, A lining method using a mine shaft, which is constructed by sequentially inserting and constructing an outer shell lining body between two mine shafts.   The guide shaft according to claim 1, wherein the waterproof joint portion of the lining member is also slidably fitted to the waterproof rail in the guide shaft to stop the water while propelling the cover member. There was a lining method.   The water guide plate according to claim 1 or 2, wherein the water stop plate protruding from the excavator is made to precede the water stop joint portion of the excavator in the guide shaft to stop water between the cut lining portion. A lining method using a mine.   One of the two guide shafts is provided with parallel water stop rails to stop the water by fitting with the water stop joint portion of the excavator, and the other guide shaft is provided with a partition wall provided therein. The lining method using the guide shaft according to claim 1, wherein water is stopped at the partition wall by using the outer portion as a cutting lining portion that is easy to cut.   5. A lining method using a guide mine according to claim 1, 2, 3, or 4, wherein after the outer shell lining body is constructed, a filler is filled in the guide mine.   After constructing and closing the upper, lower, left, and right outer shell lining bodies by the lining method according to any one of claims 1 to 5 between the upper, lower, left, and right four guide shafts, excavating the inside surrounded by these Tunnel construction method using the characteristic guide mine.

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