CN203716985U - Advanced dual guide hole of mountain ridge soft foundation tunnel - Google Patents
Advanced dual guide hole of mountain ridge soft foundation tunnel Download PDFInfo
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- CN203716985U CN203716985U CN201420083081.1U CN201420083081U CN203716985U CN 203716985 U CN203716985 U CN 203716985U CN 201420083081 U CN201420083081 U CN 201420083081U CN 203716985 U CN203716985 U CN 203716985U
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Abstract
The utility model relates to an advanced dual guide hole of a mountain ridge soft foundation tunnel. Weak surrounding rocks of a traditional mountain ridge tunnel generally adopt a double side drift method for construction, but water-rich silt-fine sand stratum effect of neogene system is not obvious, and base soft rocks are obvious because of disturbance influence of multiple constructions on a plurality of working surfaces. The excavated surface of the tunnel is divided into twelve working surfaces (upper and lower benches of left and right pilot drifts, upper and lower benches of left and right sides of an arch part, middle bench, left, middle and right inverted arches), each working surface is advanced to the next working surface in sequence, circulating excavation is carried out, respective preliminary bracings and temporary supports are constructed respectively for sealing after each working surface is excavated, and transverse and vertical supports are constructed for temporary supporting. According to the construction method, the stability of base and the safety of tunnel integral structure are ensured, the requirement of tunnel construction progress is met, the tunnel construction risk is reduced, the advanced dual guide hole is suitable for water-rich silt-fine sand rock and soil stratum under serious tunnel surrounding rock conditions, and the construction is safe, convenient and quick.
Description
Technical field
the utility model belongs to traffic engineering technical field, is specifically related to the leading two pilot tunnels in Ruan Ji tunnel, a kind of mountain ridge.
Background technology
In rich pigment packsand (soil property) stratum, as cementing powder packsand stratum a little less than Neogene system shale, diagenesis is poor, meets water and easily softens, and face argillization phenomenon is obvious, the softening scattered paste shape that is of substrate, lose bearing capacity, cause tunnel deformation large, supporting destroys, the phenomenon of caving in is very serious, construction speed is slow, and difficulty of construction and risk are high.Traditional mountain tunnel weak surrounding rock generally adopts CRD method or the construction of double side wall pilot tunnel method, tunnel excavation face is divided into multiple work planes, can reduce the disturbance of construction to protolith and the effect of the leading strengthening stratum of base tunnel, but to the rich pigment packsand of Neogene system stratum effect not obvious, be subject to the repeatedly impact of construction disturbance of Multi-working-surface, substrate soft rock phenomenon is but more serious.
Summary of the invention
The purpose of this utility model is to provide the leading two pilot tunnels in Ruan Ji tunnel, a kind of mountain ridge, can effectively improve the efficiency of construction in Ruan Ji tunnel, rich pigment packsand (soil property) mountain ridge, reduces risk and the difficulty of construction.
The technical scheme that the utility model adopts is:
The leading two pilot tunnel structures in Ruan Ji tunnel, a kind of mountain ridge, is characterized in that:
In tunnel, both sides are provided with left side base tunnel and right side base tunnel;
Base tunnel interior excavation in left side has left side base tunnel to top bar and left side base tunnel is got out of a predicament or an embarrassing situation, and the face that left side base tunnel is topped bar is ahead of the face 200-300cm that left side base tunnel is got out of a predicament or an embarrassing situation; Base tunnel outside, left side is left side base tunnel abutment wall preliminary bracing, and inner side is left side base tunnel temporary lining, and bottom is left side base tunnel stull;
Right side excavation with guide pit has right side base tunnel to top bar and right side base tunnel is got out of a predicament or an embarrassing situation, the face that right side base tunnel is topped bar is ahead of the face 200-300cm that right side base tunnel is got out of a predicament or an embarrassing situation, and the face that left side base tunnel is got out of a predicament or an embarrassing situation is ahead of the face 1000cm that right side base tunnel is topped bar; Base tunnel outside, right side is right side base tunnel abutment wall preliminary bracing, and inner side is right side base tunnel temporary lining, and bottom is right side base tunnel stull;
Base tunnel top, left side excavation has left side, arch to top bar and get out of a predicament or an embarrassing situation in left side, arch, the face that right side base tunnel is got out of a predicament or an embarrassing situation is ahead of the face 2000-3000cm topping bar in left side, arch, and the face of topping bar in left side, arch is ahead of the face 200-300cm getting out of a predicament or an embarrassing situation in left side, arch; Outside is topped bar for the preliminary bracing of topping bar on the left of arch in left side, arch, and inner side is the perpendicular support in top, arch; Outside is got out of a predicament or an embarrassing situation for the preliminary bracing of getting out of a predicament or an embarrassing situation on the left of arch in left side, arch, and inner side is the perpendicular support in bottom, arch, and bottom is arch left side stull;
Right side base tunnel top excavation has right side, arch to top bar and get out of a predicament or an embarrassing situation in left side, arch, and the face of getting out of a predicament or an embarrassing situation in left side, arch is ahead of right side, the arch 1000cm that tops bar, and the face of topping bar in right side, arch is ahead of the face 200-300cm getting out of a predicament or an embarrassing situation in left side, arch; Outside is topped bar for the preliminary bracing of topping bar of right side, arch in right side, arch, and to be that top, arch is perpendicular support in inner side; Outside is got out of a predicament or an embarrassing situation for the preliminary bracing of getting out of a predicament or an embarrassing situation of right side, arch in arch left side, and to be that bottom, arch is perpendicular support in inner side, and bottom is the stull of right side, arch;
Between left side base tunnel and right side base tunnel, excavation has the middle step that is inclined-plane, the face of getting out of a predicament or an embarrassing situation in right side, arch to be ahead of forefront, the inclined-plane 1000cm of middle step; Middle step bottom surface is middle step stull, in fall in middle step stull and performed the perpendicular support of middle step;
Base tunnel below, left side excavation has left side inverted arch, and inverted arch bottom in left side is left side inverted arch preliminary bracing, and inner side is left side inverted arch temporary lining; Base tunnel below, right side excavation has right side inverted arch, and inverted arch bottom in right side is right side inverted arch preliminary bracing, and inner side is right side inverted arch temporary lining; Middle step below excavation has middle part inverted arch, and inverted arch bottom in middle part is middle part inverted arch preliminary bracing; Left side inverted arch, middle part inverted arch and right side inverted arch are in same face, i.e. inverted arch excavation face, excavates face 200-300cm along being ahead of inverted arch at the bottom of the inclined-plane of middle step.
Base tunnel inner side, left side is provided with the left side base tunnel advance support being made up of left side base tunnel advance support ductule, and left side base tunnel temporary lining performs in the base tunnel advance support of left side;
Base tunnel inner side, right side is provided with the right side base tunnel advance support being made up of right side base tunnel advance support ductule, and right side base tunnel temporary lining performs in the base tunnel advance support of right side;
The arranged outside that topping bar in arch left side and gets out of a predicament or an embarrassing situation in left side, arch is by arch, left side advance support be made up of left side, arch advance support ductule, and the top bar preliminary bracing of getting out of a predicament or an embarrassing situation on the left of preliminary bracing and arch of left side, arch performs in the advance support of arch, left side;
Right side, arch top bar and right side, the arch arranged outside of getting out of a predicament or an embarrassing situation by arch, the right side advance support being formed by right side, arch advance support ductule, preliminary bracing and right side, the arch preliminary bracing of getting out of a predicament or an embarrassing situation of topping bar of right side, arch performs in the advance support of arch, right side.
The utlity model has following advantage:
The utility model adopts the leading method construction of two pilot tunnels, and tunnel excavation face is divided into 12 work planes, and (left side base tunnel is topped bar, left side base tunnel is got out of a predicament or an embarrassing situation, right side base tunnel is topped bar, right side base tunnel is got out of a predicament or an embarrassing situation, top bar in left side, arch, get out of a predicament or an embarrassing situation in left side, arch, top bar in right side, arch, get out of a predicament or an embarrassing situation in right side, arch, middle step, left side inverted arch, middle part inverted arch and right side inverted arch), each work plane is ahead of next work plane successively, the operation of circulation excavation, the preliminary bracing performing respectively after each work plane excavation separately (adds up to nine parts, is respectively left side base tunnel abutment wall preliminary bracing, right side base tunnel abutment wall preliminary bracing, the preliminary bracing of topping bar of arch left side, the preliminary bracing of getting out of a predicament or an embarrassing situation of arch left side, the preliminary bracing of topping bar of right side, arch, the preliminary bracing of getting out of a predicament or an embarrassing situation of right side, arch, left side inverted arch preliminary bracing, middle part inverted arch preliminary bracing, right side inverted arch preliminary bracing) seal, and perform stull, temporary supporting is carried out in perpendicular support, ensure the integrally-built safety of stability and tunnel of substrate, met the requirement of Tunnel Construction Schedule, reduced the risk of tunnel construction, be applicable to tunnel surrounding condition comparatively severe rich pigment packsand and soil property stratum, construction safety, convenient, fast.
Brief description of the drawings
Fig. 1 is the leading two pilot tunnel cross section constructing structure figure in Ruan Ji tunnel, the mountain ridge.
Fig. 2 is the leading two pilot tunnel longitudinal section constructing structure figure in Ruan Ji tunnel, the mountain ridge.
Fig. 3 is the leading two pilot tunnel plane constructing structure figure in Ruan Ji tunnel, the mountain ridge.
In figure, 1-left side base tunnel is topped bar, 2-left side base tunnel is got out of a predicament or an embarrassing situation, 3-right side base tunnel is topped bar, 4-right side base tunnel is got out of a predicament or an embarrassing situation, top bar in left side, 5-arch, get out of a predicament or an embarrassing situation in left side, 6-arch, top bar in right side, 7-arch, get out of a predicament or an embarrassing situation in right side, 8-arch, step in 9-, 10-left side inverted arch, 11-middle part inverted arch, 12-right side inverted arch, 13-left side base tunnel advance support ductule, the base tunnel temporary lining of 14-left side, the base tunnel abutment wall preliminary bracing of 15-left side, the base tunnel stull of 16-left side, 17-right side base tunnel advance support ductule, the base tunnel temporary lining of 18-right side, the base tunnel abutment wall preliminary bracing of 19-right side, the base tunnel stull of 20-right side, left side, 21-arch advance support ductule, the preliminary bracing of topping bar of 22-arch left side, the perpendicular support in top, 23-arch, the preliminary bracing of getting out of a predicament or an embarrassing situation of 24-arch left side, the perpendicular support in bottom, 25-arch, the left side stull of 26-arch, right side, 27-arch advance support ductule, the preliminary bracing of topping bar of right side, 28-arch, the preliminary bracing of getting out of a predicament or an embarrassing situation of right side, 29-arch, the right side stull of 30-arch, the inverted arch preliminary bracing of 31-left side, the inverted arch preliminary bracing of 32-middle part, the inverted arch preliminary bracing of 33-right side, 34-inverted arch two serves as a contrast, 35-arch wall two serves as a contrast, step stull in 36-, the perpendicular support of step in 37-, the perpendicular support of 38-left side inverted arch, the perpendicular support of 39-right side inverted arch.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in detail.
The leading two pilot tunnel construction methods in Ruan Ji tunnel, the mountain ridge that the utility model is related, adopt the leading method construction of two pilot tunnels, referring to Fig. 1, tunnel excavation face is divided into 12 work plane left side base tunnels and tops bar, left side base tunnel is got out of a predicament or an embarrassing situation, right side base tunnel is topped bar, right side base tunnel is got out of a predicament or an embarrassing situation, top bar in left side, arch, get out of a predicament or an embarrassing situation in left side, arch, top bar in right side, arch, get out of a predicament or an embarrassing situation in right side, arch, middle step, left side inverted arch, middle part inverted arch and right side inverted arch, each work plane is ahead of next work plane successively, the operation of circulation excavation, the preliminary bracing performing respectively separately after each work plane excavation adds up to nine parts, is respectively left side base tunnel abutment wall preliminary bracing, right side base tunnel abutment wall preliminary bracing, the preliminary bracing of topping bar of arch left side, the preliminary bracing of getting out of a predicament or an embarrassing situation of arch left side, the preliminary bracing of topping bar of right side, arch, the preliminary bracing of getting out of a predicament or an embarrassing situation of right side, arch, left side inverted arch preliminary bracing, middle part inverted arch preliminary bracing, right side inverted arch preliminary bracing is sealed, and performs stull, temporary supporting is carried out in perpendicular support, and Specific construction step is as follows:
Step 1: perform the left side base tunnel advance support being formed by left side base tunnel advance support ductule 13, under the protection of left side base tunnel advance support excavation left side base tunnel top bar 1 and left side base tunnel get out of a predicament or an embarrassing situation 2, each excavation drilling depth is a Pin steelframe distance, and base tunnel top bar 1 face in left side is ahead of get out of a predicament or an embarrassing situation 2 face 200-300cm of left side base tunnel; Left side base tunnel top bar 1 and get out of a predicament or an embarrassing situation 2 outside and inner side of left side base tunnel perform respectively left side base tunnel abutment wall preliminary bracing 15 and left side base tunnel temporary lining 14, mainly comprise the vertical profile steel frame of the thick C20 of sprayed mortar 5cm, frame, set anchor pole and hang steel mesh reinforcement, and perform left side base tunnel stull 16 in left side base tunnel 2 bottom surfaces of getting out of a predicament or an embarrassing situation;
Step 2: perform the right side base tunnel advance support being formed by right side base tunnel advance support ductule 17, under the protection of right side base tunnel advance support, excavate right side base tunnel top bar 3 and right side base tunnel get out of a predicament or an embarrassing situation 4, each excavation drilling depth is a Pin steelframe distance, base tunnel top bar 3 face in right side is ahead of get out of a predicament or an embarrassing situation 4 face 200-300cm of right side base tunnel, and base tunnel get out of a predicament or an embarrassing situation 2 face in left side is ahead of top bar 3 face 1000cm of right side base tunnel; Right side base tunnel top bar 3 and get out of a predicament or an embarrassing situation 4 outsides and inner side of right side base tunnel perform respectively right side base tunnel abutment wall preliminary bracing 19 and right side base tunnel temporary lining 18, mainly comprise the vertical profile steel frame of the thick C20 of sprayed mortar 5cm, frame, set anchor pole and hang steel mesh reinforcement, and perform right side base tunnel stull 20 in right side base tunnel 4 bottom surfaces of getting out of a predicament or an embarrassing situation;
Step 3: perform arch, the left side advance support being formed by left side, arch advance support ductule 21 above the base tunnel of left side, under the protection of arch, left side advance support, excavate left side, arch and top bar 5, each excavation drilling depth is a Pin steelframe distance, and base tunnel get out of a predicament or an embarrassing situation 4 face in right side is ahead of top bar 5 face 2000-3000cm of left side, arch; Top bar in arch left side 5 outsides and inner side performs respectively the perpendicular support 23 of preliminary bracing 22 and top, arch of topping bar of left side, arch, mainly comprises the thick C20 of sprayed mortar 5cm, the vertical profile steel frame of frame, sets anchor pole and hang steel mesh reinforcement;
Top bar in arch left side and excavate left side, arch below 5 and get out of a predicament or an embarrassing situation 6, top bar 5 face of left side, arch is ahead of get out of a predicament or an embarrassing situation 6 face 200-300cm of left side, arch; Get out of a predicament or an embarrassing situation in arch left side 6 outsides and inner side performs respectively the perpendicular support 25 of preliminary bracing 24 and bottom, arch of getting out of a predicament or an embarrassing situation of left side, arch, 6 bottom surfaces of getting out of a predicament or an embarrassing situation, arch left side perform arch left side stull 26, mainly comprise the thick C20 of sprayed mortar 5cm, the vertical profile steel frame of frame, set anchor pole and hang steel mesh reinforcement;
Step 4: perform arch, the right side advance support being formed by right side, arch advance support ductule 27 above the base tunnel of right side, under the protection of arch, right side advance support, excavating right side, the arch 7 each excavation drilling depths of topping bar is a Pin steelframe distance, and get out of a predicament or an embarrassing situation 6 face of left side, arch is ahead of right side, arch 7 1000cm that top bar; Top bar on right side, arch respectively 7 outsides and inner side performs the perpendicular support 23 in preliminary bracing 28 and top, arch of topping bar of right side, arch, mainly comprises the thick C20 of sprayed mortar 5cm, the vertical profile steel frame of frame, sets anchor pole and hang steel mesh reinforcement;
Top bar on right side, arch and excavate right side, arch below 7 and get out of a predicament or an embarrassing situation 8, top bar 7 face of right side, arch is ahead of get out of a predicament or an embarrassing situation 8 face 200-300cm of right side, arch; Get out of a predicament or an embarrassing situation on right side, arch 8 outsides and inner side performs respectively the perpendicular support 25 in preliminary bracing 29 and bottom, arch of getting out of a predicament or an embarrassing situation of right side, arch, 8 bottom surfaces of getting out of a predicament or an embarrassing situation, right side, arch perform right side, arch stull 30, mainly comprise the thick C20 of sprayed mortar 5cm, the vertical profile steel frame of frame, set anchor pole and hang steel mesh reinforcement;
Step 5: (gradient is generally 1:0.2 to be inclined-plane between excavation left side base tunnel and right side base tunnel, can suitably adjust according to country rock situation) middle step 9, each excavation drilling depth is a Pin steelframe distance, and get out of a predicament or an embarrassing situation 8 face of right side, arch is ahead of forefront, the inclined-plane 1000cm of middle step 9; Perform middle step stull 36 in middle step 9 bottom surfaces, in fall in middle step stull 36 and perform the perpendicular support 37 of middle step, mainly comprise the thick C20 of sprayed mortar 5cm, the vertical profile steel frame of frame, set anchor pole and hang steel mesh reinforcement;
Step 6: repeating step one is to step 5 2-3 circulation, at the left side base tunnel excavation left side inverted arch 10 below 2 of getting out of a predicament or an embarrassing situation, perform respectively left side inverted arch preliminary bracing 31 and left side inverted arch temporary lining 38 in left side inverted arch 10 bottoms and inner side, mainly comprise the thick C20 of sprayed mortar 5cm, the vertical profile steel frame of frame, set anchor pole and hang steel mesh reinforcement; Get out of a predicament or an embarrassing situation below 4 and excavate right side inverted arch 12 at right side base tunnel, perform respectively right side inverted arch preliminary bracing 33 and right side inverted arch temporary lining 39 in right side inverted arch 12 bottoms and inner side, mainly comprise the thick C20 of sprayed mortar 5cm, the vertical profile steel frame of frame, set anchor pole and hang steel mesh reinforcement; Between left side inverted arch 10 and right side inverted arch, excavation middle part inverted arch 11, performs middle part inverted arch preliminary bracing 32 in middle part inverted arch 11 bottoms, mainly comprises the thick C20 of sprayed mortar 5cm, the vertical profile steel frame of frame, sets anchor pole and hang steel mesh reinforcement;
The excavation drilling depth of left side inverted arch 10, middle part inverted arch 11 and right side inverted arch 12 is identical, and forming same face is inverted arch excavation face, at the bottom of the inclined-plane of middle step 9, excavates face 200-300cm along being ahead of inverted arch;
Step 7: repeating step six is constructed after some circulations, and each temporary lining is removed in segmentation, removes length according to determining after monitoring measurement interpretation of result, once removes length and must not be greater than 10m; Perform inverted arch two in left side inverted arch preliminary bracing 31, middle part inverted arch preliminary bracing 32 and inverted arch preliminary bracing 33 inner sides, right side and serve as a contrast 34, and fill at the bottom of performing tunnel; Preliminary bracing 22, left side, arch preliminary bracing 24, left side base tunnel abutment wall preliminary bracing 15, right side, arch get out of a predicament or an embarrassing situation preliminary bracing 29 and base tunnel abutment wall preliminary bracing 19 inner sides, right side of preliminary bracing 28, right side, arch of topping bar of getting out of a predicament or an embarrassing situation of topping bar in arch left side perform arch wall two and serve as a contrast 35.
It is cited that content of the present utility model is not limited to embodiment, and the conversion of any equivalence that those of ordinary skill in the art take technical solutions of the utility model by reading the utility model manual, is claim of the present utility model and contains.
Claims (2)
1. the leading two pilot tunnel structures in mountain ridge Ruan Ji tunnel, is characterized in that:
In tunnel, both sides are provided with left side base tunnel and right side base tunnel;
In the base tunnel of left side, excavation has left side base tunnel to top bar (1) and left side base tunnel is got out of a predicament or an embarrassing situation (2), left side base tunnel top bar the face of (1) be ahead of on the left of the get out of a predicament or an embarrassing situation face 200-300cm of (2) of base tunnel; Base tunnel outside, left side is left side base tunnel abutment wall preliminary bracing (15), and inner side is left side base tunnel temporary lining (14), and bottom is left side base tunnel stull (16);
Right side excavation with guide pit has right side base tunnel to top bar (3) and right side base tunnel get out of a predicament or an embarrassing situation (4), base tunnel the top bar face of (3) in right side is ahead of the get out of a predicament or an embarrassing situation face 200-300cm of (4) of right side base tunnel, and base tunnel the get out of a predicament or an embarrassing situation face of (2) in left side is ahead of the top bar face 1000cm of (3) of right side base tunnel; Base tunnel outside, right side is right side base tunnel abutment wall preliminary bracing (19), and inner side is right side base tunnel temporary lining (18), and bottom is right side base tunnel stull (20);
Left side base tunnel top excavation have left side, arch top bar (5) and arch on the left of get out of a predicament or an embarrassing situation (6), base tunnel the get out of a predicament or an embarrassing situation face of (4) in right side is ahead of the top bar face 2000-3000cm of (5) of left side, arch, and the top bar face of (5) of left side, arch is ahead of the get out of a predicament or an embarrassing situation face 200-300cm of (6) of left side, arch; (5) outside is topped bar for the preliminary bracing (22) of topping bar on the left of arch in left side, arch, and inner side is the perpendicular support in top, arch (23); (6) outside is got out of a predicament or an embarrassing situation for the preliminary bracing (24) of getting out of a predicament or an embarrassing situation on the left of arch in left side, arch, and inner side is the perpendicular support in bottom, arch (25), and bottom is arch left side stull (26);
Right side base tunnel top excavation have right side, arch top bar (7) and arch on the left of get out of a predicament or an embarrassing situation (8), the get out of a predicament or an embarrassing situation face of (6) of arch left side is ahead of right side, arch (7) 1000cm that tops bar, and the top bar face of (7) of right side, arch is ahead of the get out of a predicament or an embarrassing situation face 200-300cm of (8) of left side, arch; (7) outside is topped bar for the preliminary bracing (28) of topping bar of right side, arch in right side, arch, and inner side is perpendicular support (23), top, arch; (8) outside is got out of a predicament or an embarrassing situation for the preliminary bracing (29) of getting out of a predicament or an embarrassing situation of right side, arch in arch left side, and inner side is perpendicular support (25), bottom, arch, and bottom is right side, arch stull (30);
Between left side base tunnel and right side base tunnel, excavate and have the get out of a predicament or an embarrassing situation face of (8) of the middle step (9) that is inclined-plane, right side, arch to be ahead of forefront, the inclined-plane 1000cm of middle step (9); Middle step (9) bottom surface is middle step stull (36), in fall in middle step stull (36) and performed the perpendicular support of middle step (37);
Base tunnel below, left side excavation has left side inverted arch (10), and left side inverted arch (10) bottom is left side inverted arch preliminary bracing (31), and inner side is left side inverted arch temporary lining (38); Base tunnel below, right side excavation has right side inverted arch (12), and right side inverted arch (12) bottom is right side inverted arch preliminary bracing (33), and inner side is right side inverted arch temporary lining (39); Middle step (9) below excavation has middle part inverted arch (11), and middle part inverted arch (11) bottom is middle part inverted arch preliminary bracing (32); Left side inverted arch (10), middle part inverted arch (11) and right side inverted arch (12) are in same face, i.e. inverted arch excavation face, excavates face 200-300cm along being ahead of inverted arch at the bottom of the inclined-plane of middle step (9).
2. the leading two pilot tunnel structures in Ruan Ji tunnel, a kind of mountain ridge according to claim 1, is characterized in that:
Base tunnel inner side, left side is provided with the left side base tunnel advance support being made up of left side base tunnel advance support ductule (13), and left side base tunnel temporary lining (14) performs in the base tunnel advance support of left side;
Base tunnel inner side, right side is provided with the right side base tunnel advance support being made up of right side base tunnel advance support ductule (17), and right side base tunnel temporary lining (18) performs in the base tunnel advance support of right side;
The arranged outside that topping bar (5) in left side, arch and gets out of a predicament or an embarrassing situation in left side, arch (6) has arch, the left side advance support being made up of arch left side advance support ductule (21), and the preliminary bracing (24) of getting out of a predicament or an embarrassing situation on the left of top bar on the left of arch preliminary bracing (22) and arch performs in the advance support of arch, left side;
The arranged outside that topping bar (7) in right side, arch and gets out of a predicament or an embarrassing situation in right side, arch (8) has arch, the right side advance support being made up of right side, arch advance support ductule (27), and preliminary bracing (28) and right side, the arch preliminary bracing (29) of getting out of a predicament or an embarrassing situation of topping bar of right side, arch performs in the advance support of arch, right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420083081.1U CN203716985U (en) | 2014-02-26 | 2014-02-26 | Advanced dual guide hole of mountain ridge soft foundation tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420083081.1U CN203716985U (en) | 2014-02-26 | 2014-02-26 | Advanced dual guide hole of mountain ridge soft foundation tunnel |
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| Publication Number | Publication Date |
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| CN203716985U true CN203716985U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420083081.1U Withdrawn - After Issue CN203716985U (en) | 2014-02-26 | 2014-02-26 | Advanced dual guide hole of mountain ridge soft foundation tunnel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775095A (en) * | 2014-02-26 | 2014-05-07 | 中铁第一勘察设计院集团有限公司 | Ridge soft-foundation tunnel advance double guide tunnel and construction method thereof |
| CN107489433A (en) * | 2017-06-28 | 2017-12-19 | 厦门理工学院 | A kind of tunnel CRD engineering methods anti-leakage structure and Antiseep method |
| CN110656953A (en) * | 2019-10-18 | 2020-01-07 | 中铁八局集团第六工程有限公司 | Reinforcing method for enhancing stability of inverted arch structure of high-ground-stress soft rock tunnel |
-
2014
- 2014-02-26 CN CN201420083081.1U patent/CN203716985U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775095A (en) * | 2014-02-26 | 2014-05-07 | 中铁第一勘察设计院集团有限公司 | Ridge soft-foundation tunnel advance double guide tunnel and construction method thereof |
| CN103775095B (en) * | 2014-02-26 | 2015-10-28 | 中铁第一勘察设计院集团有限公司 | The advanced two pilot tunnel in Ruan Ji tunnel, the mountain ridge and construction method thereof |
| CN107489433A (en) * | 2017-06-28 | 2017-12-19 | 厦门理工学院 | A kind of tunnel CRD engineering methods anti-leakage structure and Antiseep method |
| CN107489433B (en) * | 2017-06-28 | 2023-05-23 | 厦门理工学院 | Anti-leakage structure and anti-leakage method for tunnel CRD construction method |
| CN110656953A (en) * | 2019-10-18 | 2020-01-07 | 中铁八局集团第六工程有限公司 | Reinforcing method for enhancing stability of inverted arch structure of high-ground-stress soft rock tunnel |
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