JPS58185898A - Underground concrete tunnel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION When constructing a concrete tunnel with a rectangular cross-section underground, the present invention provides a safe and reliable trap structure by controlling the application of a large load directly above the large underground tunnel. Construction of a rectangular concrete underground tunnel, revision of the underground tunnel with the aim of making it possible to di The outer shaft walls and the bottom excavated wall surfaces of the small square tunnel with square corners on both sides of the bottom formed by excavation are respectively covered with concrete and layered. Concrete lining is applied to each of the outer shaft walls of the double-sided meso-bin rectangular small tunnel constructed by excavating the earth and sand on the upper side, respectively. Concrete lining is applied to each of the outer shaft wall surface and the top excavated wall surface of the square small tunnel with a preliminary rectangular top portion on both sides excavated, and a layer of concrete is applied to each of the outer shaft wall surfaces and the top wall surface of the small square tunnel with a preliminary rectangular top portion on both sides. Concrete lining has been applied to the top excavated walls of the small square tunnel with a top meson, which was constructed by excavating earth and sand. Concrete lining has been applied to the bottom excavated walls of the bottom intermediate beveled small tunnel, which is constructed by excavating the earth and sand below the barrier and top middle beveled small tunnels, and these concrete linings are continuous. It is a t-% sign that it is constructed in one piece.

Conventionally, when constructing a tunnel with a large square cross section underground that is subject to heavy loads, the earth and sand of the entire cross section of the tunnel are excavated and carried out, and the excavated walls of the square tunnel constructed are lined with concrete. Pipe layering is being done.

However, this conventional construction method has the disadvantage that, due to the large load, there is a risk of accidents such as collapse of the earth and sand during excavation work.

On the other hand, this invention eliminates the drawbacks of the conventional construction method.According to this invention, a large tunnel is divided into small preliminary tunnels, earth and sand is excavated and carried out one by one, and the walls of the tunnels are removed. Since the tunnel is lined with concrete, a large, rectangular concrete tunnel can be constructed safely, reliably, and easily without being affected by the heavy pressure of the heavy load at the top, which is extremely useful.

The invention of this application will be described next with reference to the drawings.

Saba 1, 2, building 3, reference 1, 1, 4, 7, 1, 2, 10, 11, 1, 1 Figure 73, number 14! Figures - and QII are longitudinal cross-sectional views showing the construction order when constructing the invention of this application, and Figure 1 and Figure 17 are cross-sectional views of an embodiment of the underground concrete tunnel of the invention of this application. There is.

In the drawing, "I" first indicates a square full tunnel shape (1
), and set the top and bottom horizontal lengths (2) 1.
(2) 1 and both lll1wL length (31+ ' +31
+ s (3)
4) 1. (4) Fully open pile, each of its inner and outer walls and the top (6 dimensions), and concrete lining (7) on each outer shaft wall surface K and bottom side wall surface, respectively. 1@
1. , (7), ・(81m was applied, "■", front bottom part with preliminary square small tunnel on both sides / upper horizontal length Q [I, ・aa, but the bottom with preliminary square small tunnel on both sides (4) 1・+4 ), in the form of a small tunnel with a rectangular cross section of the same length as 141. t(4) Excavate earth and sand to the same depth, carry it out, and install a preliminary rectangular tunnel αDIIa11 on both sides, and install shoring and lower shoring on each of the inner and outer excavated walls and the top excavated wall. Remove the concrete lining, and install a concrete lining Q#, l TJ4 on each of the outer shaft wall surfaces, respectively, in connection with the upper part of the bottom concrete lining. f, rlI[J, above each of the small tunnels with mesons on both sides an, = an, in the form of small tunnels with a rectangular cross section of the same length as described above, horizontally underground, the small tunnels with mesons on both sides am, , an, excavate earth and sand to the same depth, carry it out, and excavate the preliminary rectangular small tunnel on both sides. Shoring Q-1・a
Town・(II, and 611.・+111.# fi9.1
At the same time, the lower supports on both sides are removed, and a concrete lining is applied to each outer excavated wall surface and top excavated wall surface, respectively, in connection with the upper part of the intermediate concrete lining, respectively. and ω,・an11 alms, ry”
, In the middle of the opposing inner sides of the preliminary rectangular small tunnels α71+ and lI- on both sides, earth and sand is dug horizontally underground in the shape of a small tunnel with a rectangular cross section to the same length, and carried out to form a small rectangular tunnel with a top intermediate section. One shoring (2) is applied to the top excavated surface of the cod open excavation, and both the above-mentioned shorings are removed, and the top excavated wall surface is connected to the top concrete lining on both sides. Intermediate concrete) It
Engineering ht-administration, rVJ.

On the lower side of the square small tunnel with preliminary rectangular small tunnels on both sides of the bottom (411, (4)) and the top middle part, soil is poured horizontally underground into a small tunnel shape with a warm and short cross section, up to the same length as above. Excavate, carry out, and make a small square tunnel with a bottom intermediate structure @ meeting opening, the above-mentioned shoring 151, 1 +5
1. , Construct the bottom intermediate concrete lining @ connected to the bottom concrete lining in sequence, and ``■'', perform the same construction towards the back to construct an underground concrete tunnel.

The shape of all the tunnels with the rectangular cross section is set to a horizontally long rectangular shape, and the excavation and carrying out of the small tunnels with intermediaries on both sides is omitted, and an underground tunnel with a horizontally long rectangular shape is constructed. By setting the shape to a long and rectangular shape, it is possible to omit the excavation and transport of the upper and lower intermediate sub-tunnels, and to construct a long and rectangular underground tunnel.

In addition, the excavation and removal of earth and sand in the underground tunnel construction method of the present invention may be carried out by the same method as shown in Fig. 1R and Fig. 1P, or by other methods as shown in Fig. Construction method CB) may be used.

[Brief explanation of drawings]

Figure 1, Figure 1, Figure 3, Figure reference, Figure 5, Figure 6, Figure 7, Figure 7, Figure 2, Figure 10, Figure 11, Figure 72, Figure 73. Figures 1 and 1j are longitudinal sectional views showing the order of the underground concrete tunnel of the present invention, and Figure 14.
FIG. 17 is a sectional view of an underground concrete tunnel of the present invention, FIG. In the figures, the same reference numerals indicate the same or equivalent parts, and (1
) Rectangular full tunnel type, 141. ,14+,i! Bottom side preliminary square small tunnel +71. l+810(7), 1
f81. i concrete lining, +111.・1IIlμ
Square small tunnel with meso on both sides, aa, *aa, rx concrete lining, ITI, -119 and preliminary square small tunnel on both sides, w, -CjI3. i concrete lining, - indicates the top meso-bin square small tunnel, (Foundation) indicates the top intermediate concrete lining, @ indicates the bottom meso-bin square small tunnel, and ae indicates the bottom intermediate concrete lining. Patent Applicant (Inventor) Tomoo Ito Agent Patent Attorney Isamu Nakura Figure 1 δ Figure 17 Figure 114 TG Figure Figure 79 A Figure 20 (1 Procedural Amendment (Hougensho J11#I1-4) 3. Mr. Kazuo Kanwakasugi, Mr. Kazuo Kanwakasugi, 1." [Indication of the matter, Showa SR Patent Application No. Requested by Tomoo Fuji 5 Date of Supplementary IF Order May 1920 786, Mi
i, E c7) Subject: Brief description of drawings in the specification 7. Contents of the specification: Page 10, line 7 and line 2 of the specification in 1945! Pursuant to the procedural amendment order dated May 17, the first and second lines of page 10 of the specification of the present application are amended as follows. "Explanatory cross-sectional view of the construction method, the first drawing shows a cross-sectional view of the main part thereof, and the second figure shows a cross-sectional view of the main part of another construction method." Attached document (l) to U, Specification No. 101iL/Patent application Tomoo Ito (revised) A cross-sectional diagram explaining the construction method, the first diagram is a cross-sectional diagram of the main part,
The figure shows a cross-sectional view of the main parts of another construction method. In the figures, the same reference numerals indicate the same or equivalent parts, and (1
) is a square full tunnel shape, (4' + '(4'p bottom side preliminary square small tunnel, m, + 1810 (7),
1t817! Concrete lining, aI111aL1μ Small square tunnel with mesons on both sides, αa, -aap Concrete lining, fin, -(η is a small square tunnel with preliminary tops on both sides, c
io, ・m is concrete) [work, ■ is the top intermediate rectangular small tunnel, - C is the top intermediate concrete lining, @ is the bottom intermediate rectangular small tunnel, and (2) is the bottom intermediate concrete bulwark.

Claims (1)

[Claims] t++, rIJ, each outer excavated wall surface and the bottom excavated wall surface of a rectangular small tunnel with a preliminary rectangular bottom on both sides constructed by excavating the earth and sand at both corners of the rectangular bottom, which has been set in advance as a full tunnel shape, are covered with concrete. Some work has been done, and “■”
, a concrete lining is applied to each of the outer excavated walls of the double-side middle square beveled small tunnel constructed by excavating the earth and sand on the upper side of each of the bottom side preliminary square small tunnels, and a concrete lining is applied to each layer,
"■", Concrete lining is applied to each outer excavated wall l and the top excavated wall surface of the preliminary rectangular small tunnel on both sides constructed by excavating earth and sand on the upper side of the above-mentioned intermediary rectangular small tunnel on both sides. ``■'' The walls of the excavated top wall of the top intermediate square small tunnel constructed by excavating the earth and sand between the opposing inner rings of the preliminary rectangular tunnels and flannel on both sides are respectively lined with concrete. , Furthermore, "■" Concrete lining is applied to the bottom excavated wall surface of the bottom middle square small tunnel constructed by excavating the earth and sand at the opposite inner middle of the bottom side preliminary square small tunnel and the lower side of the top middle middle square small tunnel. Underground concrete tunnels with t-% mold and each concrete lining constructed continuously and integrally.