CN106677216B - Access gallery structure and its construction method under deep water - Google Patents

Access gallery structure and its construction method under deep water Download PDF

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Publication number
CN106677216B
CN106677216B CN201710032228.2A CN201710032228A CN106677216B CN 106677216 B CN106677216 B CN 106677216B CN 201710032228 A CN201710032228 A CN 201710032228A CN 106677216 B CN106677216 B CN 106677216B
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gallery
box
horizontal
sand rubble
concrete
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CN106677216A (en
Inventor
余义华
章荣发
邓东生
高洪远
郭靖
尹振强
李江
钟保蒙
刘�东
曾坤
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Changjiang Institute of Survey Planning Design and Research Co Ltd
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Changjiang Institute of Survey Planning Design and Research Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/063Tunnels submerged into, or built in, open water

Abstract

The invention discloses access gallery structure and its construction methods under a kind of deep water, belong to submerged structure technical field of structures.The present invention includes horizontal traffic gallery structure and domatic access gallery structure, and horizontal traffic gallery structure basis is arranged on riverbed, and one end connects with domatic access gallery structure, and the other end connects with underwater protective;The domatic access gallery structure basis is arranged on the slope of dyke, is supported by pile foundation, and one end connects with horizontal traffic gallery, and the other end is connect with ground oodle shop.Degree of safety of the present invention is high, and process is simple, and structurally waterproof effect is good, and speed of application is fast, and settling amount is small.

Description

Access gallery structure and its construction method under deep water
Technical field
The present invention relates to submerged structure technical field of structures, and in particular to be access gallery structure under a kind of deep water, this Invention further relates to the construction method of this structure.
Background technique
After Three Gorges Projects water storage, it is underwater that the preservation of White Crane Ridge Inscription of Fuling Chongqing is submerged in 10-40m all the year round.2 months 2001, really It is fixed to use the underwater protection scheme in former address that historical relic is inscribed and the external world that is, in one protective cover of upper construction of inscribing preservation of White Crane Ridge Inscription It is environmentally isolated, and then realizes protection purpose.White crane beam protects engineering by ground exhibition hall, underwater protective and access gallery three It is grouped as.Access gallery is divided into domatic access gallery and horizontal traffic gallery two parts.Domatic access gallery basis is arranged in The Changjiang dyke built rolls on rockfill slope, and horizontal traffic gallery is arranged on riverbed, every gallery length about 140m, and totally two Item.Access gallery is the important component for connecting ground exhibition hall and underwater protective, peace under white crane beam protection engineering water Quan Xing, applicability directly influence the normal use of underwater protective.
Access gallery is banded structure, 5.0 × 5.8m of normal section outer profile size (wide × high), empty dead size in normal section 3.4 × 4.2m (wide × high), side wall, top plate and bottom plate thickness are 0.8m, and top plate is in both ends arch camber, interior arch radius 0.9m.Bottom plate Inside armpit angle is 300 × 300mm;Domatic access gallery two sides of the bottom set toe of wall, choose clear span 0.7m, thick 0.8m outside, form full envelope The band-like submerged structure of enclosed.The every 11.0m of domatic access gallery sets deformation joint together, and centre does not set construction joint;Horizontal traffic gallery Every 20m sets deformation joint together, and centre sets construction joint;Press structure shape in the junction of domatic access gallery and horizontal traffic gallery Formula smoothly transits, and arrangement of reinforcement is reinforced in end, and domatic access gallery end divides into concrete foundation or vibration pier, do not set connector.
Currently, more conventional access gallery structure is normally at ground or more, plays a part of to connect traffic, be primarily subjected to The live loads such as dead load, geological process, normal use live load and wind load, snow load.The underwater access gallery of white crane beam is narrow Long, stress is complicated, changes in deep water in 10~40m and runs for a long time, gallery structure is in addition to bearing dead load, also subject to inside and outside water Soil pressure, reservoir stormy waves power, buoyancy, shoal materials act on the pressure in outside and accidental impact power, geological process, temperature are answered Power, concrete shrinkage stress etc..
Now there are no the protection structure of submerged structure and the construction methods of this structure.
Summary of the invention
The first object of the present invention is to overcome above-mentioned the deficiencies in the prior art, provides a kind of deepwater environment, complicated stress Under the conditions of access gallery structure under used deep water.
The second object of the present invention is to provide the construction method of access gallery structure under above-mentioned deep water.
To realize above-mentioned first purpose, the present invention adopts the following technical scheme:
Access gallery structure under deep water, including horizontal traffic gallery structure and domatic access gallery structure;The horizontal friendship Vestibule road structure basis is arranged on riverbed, and one end connects with domatic access gallery structure, and the other end connects with underwater protective; The domatic access gallery structure basis is arranged on the slope of dyke, is supported by pile foundation, one end and horizontal traffic gallery knot Structure connects, and the other end is connect with ground oodle shop;The main structure normal section of the horizontal traffic gallery structure is cast in place reinforced bar coagulation Box section made of soil;The main structure normal section of the domatic access gallery structure is case made of cast-in-situ steel reinforced concrete Tee section I;
The horizontal traffic gallery structure include: bedrock surface, concrete cushion, box section, cemented rock, sand rubble and Building stones;The concrete cushion is located on bedrock surface;The box section is located on the middle position of concrete cushion;The slurry Building block stone is located on concrete cushion and is symmetrically arranged in the two sides of box section, and two sides cemented rock is by cemented rock water Flat position and cemented rock ramp position composition;The sand rubble is symmetrically arranged in case between cemented rock and building stones The two sides of tee section;The building stones are made of building stones horizontal position and building stones ramp position, and anti-anchor block stone is embedded in the water of building stones Flat position and the two sides for being symmetrically arranged in box section;
The domatic access gallery structure includes: bedrock surface, sand rubble compensation bed course, box section I, sand rubble I, grouts Block stone I, blotter and precast concrete block;The sand rubble compensation bed course is located on bedrock surface and compensates bed course by sand rubble Horizontal position and sand rubble compensation bed course ramp position composition, the sand rubble compensation roll enrockment under the position of bed course slope Body;The box section I is located on the middle position of sand rubble compensation bed course;The sand rubble I is located at sand rubble compensation bed course The two sides of box section I are gone up and are symmetrically arranged in, and two sides sand rubble I is by sand rubble I horizontal position, sand rubble I upslope Position and sand rubble I downslope position composition, the sand rubble I downslope roll rockfill under position;The concrete Soil block is by horizontal position under horizontal position, precast concrete block on precast concrete block and precast concrete block ramp hyte At horizontal position is located on sand rubble I horizontal position on the precast concrete block, horizontal position under the precast concrete block On blotter, cemented rock has been poured between precast concrete block slope position and sand rubble I upslope position I;Rockfill is rolled under the blotter.
Further, the gradient on cemented rock slope position described in horizontal traffic gallery structure is 1: 2;The building stones are oblique The gradient at slope position is 1: 2;The gradient at precast concrete block slope position described in domatic access gallery structure is 1: 2;It is described The gradient that sand rubble compensates bed course slope position is 1: 2;The gradient at sand rubble I downslope position is 1: 2, on sand rubble I The gradient at slope position is 1: 1.5.
According to the above scheme, the box section I, including gallery side wall, gallery bottom plate and gallery top plate;The gallery side wall Concrete backfill step ladder is provided on the left of inner surface;Plumbing pipe trench is provided on the right side of the gallery side wall inner surface;It is described to give Trench cover is provided with above by-wash;Elevator machine hole is provided among the concrete backfill step ladder and by-wash; The concrete backfill step ladder, elevator machine hole and plumbing pipe trench are located on gallery bottom plate.
Further, the main structure normal section outer profile size is 5.0m × 5.8m (wide × high), headroom having a size of 3.4m × 4.2m (wide × high), gallery side wall, gallery top plate and gallery base plate thickness are 0.80m, and gallery top plate rises at both ends Arch, interior arch radius 0.9m, gallery bottom plate inside armpit angle is 300 × 300mm.
It constructs to access gallery structure under above-mentioned deep water, the working procedure of the horizontal traffic gallery structure, including Following steps: 1) being excavated, and end is excavated to bedrock surface;2) after excavating cleaning to bedrock surface, casting concrete bed course;3) Box section is poured on concrete cushion, the coagulation after box section has poured, using cemented rock in gallery bottom plate two sides Spats locking is carried out on soil padding;4) after spats has locked, the backfill of sand rubble and compaction in layers, pressure are carried out in gallery side wall two sides Real coefficient 0.94, side slope 1: 2 (vertical height: horizontal width);5) after being backfilling and compacted, in the sand metalling last time being backfilling and compacted It fills out 1.5m thickness building stones and grouts the thick anti-anchor block stone of 2m, flushed at the top of the building stones of backfill and the anti-anchor block stone grouted;
The working procedure of the domatic access gallery structure, comprising the following steps: 1) remove dike face precast concrete block and Blotter is excavated, and end is excavated to bedrock surface;2) after being excavated to bedrock surface check of foundation subsoil, using pea gravel concreten to stone roller It presses rockfill to carry out concrete grouting reinforcing, and pours sand rubble compensation bed course;3) box-shaped is poured on sand rubble compensation bed course Section I after box section I has been poured, carries out spats using cemented rock I, and be laid with toe of wall pad in gallery bottom plate two sides in time Layer;4) after spats and toe of wall setting cushion are complete, the above Cast-in-situ Piles in Sand-filling rubble I of bed course, and compaction in layers, compacting system are compensated in sand rubble Number 0.94, side slope 1: 1.5 (vertical height: horizontal width);5) after being backfilling and compacted, 500mm thickness rubble is poured in spats side Then bed course restores 200mm thickness precast concrete block mask by dyke dike face standard in top surface.
Further, the check of foundation subsoil in the working procedure step 2) of domatic access gallery structure is held by the confirmation of geological mapping unit Power layer bedrock surface, designing unit confirm basic plane size, positioning, absolute altitude.
Further, the slip casting bore dia of the grouting and reinforcing in the working procedure step 2) of domatic access gallery structure is 110mm, hole depth are excavation face or less 7m.
Still further, toe of wall bed course in the working procedure step 3) of domatic access gallery structure is from gallery bottom plate two sides It is 0.7m, thickness 0.8m to clear span is extended out.
Also further, the box section construction in the horizontal traffic gallery structure working procedure step 3) uses punching block Plate pours integral together with box section concrete;Domatic access gallery structure construction process 3) in box section I Construction is poured together with box section I concrete integral using steel form, pours box section and box section I concrete Strength grade is C40, and seepage-resistant grade S12, freeze proof grade is D200, and swelling agent used is that ZY type high-performance high-effective concrete is swollen Swollen dose.
The invention has the following advantages:
1, the processing of access gallery structure vault junction is arc-shaped under deep water, can increase rigidity herein, reduce it and answer Power is concentrated.
2, under deep water access gallery main structure construction using steel form poured together with main structure concrete to be formed it is whole Body reduces construction joint quantity, is conducive to accelerate construction progress, and enhancing structure self waterproofing.And main structure concrete is adopted With ZY type high-performance high-efficiency concrete expansion admixture, concrete shrinkage can compensate for, improve structure anti-permeability performance, further enhance structure Self waterproofing.
3, domatic access gallery structure and horizontal traffic gallery structure are embedded in riverbed, river mistake occupied by gallery top Flow area is relatively small, reduces influence of the reservoir stormy waves power to gallery structure, and does not influence the section flood passage.In Three Gorges Reservoir Under the conditions of low water level operation, the navigation of Yangtze River waterway is not influenced, solves navigation to protection engineering bring safety problem.
4, the essential bearing stratum of domatic access gallery structure and horizontal traffic gallery structure is located at horizon d, can significantly reduce Structure sediment amount guarantees that it meets design requirement.
Detailed description of the invention
Fig. 1 is access gallery structure chart under deep water;
Structural box section cross-sectional view based on Fig. 2;
Fig. 3 is that horizontal traffic gallery foundation trench backfills cross-sectional view;
Fig. 4 is that domatic access gallery foundation trench backfills cross-sectional view.
In figure: horizontal traffic gallery structure 1, domatic access gallery structure 2, dyke 3, oodle shop 4, underwater protective 5, river Bed 6, pile foundation 7, gallery bottom plate 01, gallery side wall 02, gallery top plate 02, plumbing pipe trench 04, trench cover 05, elevator machine hole 06, concrete backfill step ladder 07, anti-anchor block stone 11, building stones 12, sand rubble 13, cemented rock 14, concrete cushion 15, box-shaped are cut Face 16, bedrock surface 17, precast concrete block 21, sand rubble compensation bed course 22, rolls rockfill 23, grouts at box section I 16 ' Block stone I24, sand rubble I 25, blotter 26.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
As shown in Figure 1, access gallery structure under deep water, including horizontal traffic gallery structure 1 and domatic access gallery structure 2;1 basis of horizontal traffic gallery structure is arranged on riverbed 6, and one end connects with domatic access gallery structure 2, the other end with Underwater protective 5 connects;2 basis of domatic access gallery structure is arranged on the slope of dyke 3, and the gradient is 30 °, by pile foundation Plinth 7 supports, and one end connects with horizontal traffic gallery structure 1, and the other end is connect with ground oodle shop 4.
As shown in Fig. 2, the main structure normal section of the horizontal traffic gallery structure 1 and domatic access gallery structure 2 Respectively box section 16 and box section I 16 ' made of cast-in-situ steel reinforced concrete;The box section 16 and box section I 16 ' include 03 plate of gallery bottom plate 01, gallery side wall 02 and gallery top;Coagulation is provided on the left of 02 inner surface of gallery side wall Earthen backfill step ladder 07;Plumbing pipe trench 04 is provided on the right side of 02 inner surface of gallery side wall;The plumbing pipe trench 04 it is upper Side is provided with trench cover 05;Elevator machine hole 06 is provided among the concrete backfill step ladder 07 and by-wash 04;It is described Concrete backfill step ladder 07, elevator machine hole 06 and plumbing pipe trench 04 are located on gallery bottom plate 01.
As shown in figure 3, horizontal traffic gallery structure 1 includes: bedrock surface 17, concrete cushion 15, box section 16, grouts Block stone 14, sand rubble 13 and building stones 12;The concrete cushion 15 is located on bedrock surface 17;The box section 16 is located at coagulation On the middle position of soil padding 15;The cemented rock 14 is located on concrete cushion 15 and is symmetrically arranged in box section 16 Two sides, and two sides cemented rock 14 is made of cemented rock horizontal position and cemented rock slope position (gradient 1: 2);Institute Sand rubble 13 is stated between cemented rock 14 and building stones 12, and is symmetrically arranged in the two sides of box section 16;The building stones 12 It is made of building stones horizontal position and building stones slope position (gradient 1: 2), anti-anchor block stone 11 is embedded in the horizontal position of building stones 12 And it is symmetrically arranged in the two sides of box section 16.
As shown in figure 4, domatic access gallery structure 2 includes: bedrock surface 17, sand rubble compensation bed course 22, box section I 16 ', sand rubble I 25, cemented rock I 24, blotter 26 and precast concrete block 21;The sand rubble compensates bed course 22 In on bedrock surface 17 and by sand rubble compensation bed course horizontal position and sand rubble compensation bed course slope position (gradient 1: 2) group At the sand rubble compensation rolls rockfill 23 under the position of bed course slope;The box section I 16 ' is located at the compensation of sand rubble On the middle position of bed course 22;The sand rubble I 25 is located on sand rubble compensation bed course 22 and is symmetrically arranged in box section I 16 ' two sides, and two sides sand rubble I 25 is by sand rubble I horizontal position, sand rubble I upslope position (gradient 1: 1.5) It is formed with sand rubble I downslope position (gradient 1: 2), the sand rubble I downslope rolls rockfill 23 under position;It is described Precast concrete block 21 is oblique by horizontal position under horizontal position, precast concrete block on precast concrete block and precast concrete block Slope position (gradient 1: 2) forms, and horizontal position is located on 25 horizontal position of sand rubble I on the precast concrete block, described Horizontal position is located on blotter 26 under precast concrete block, on precast concrete block slope position and sand rubble I 25 Cemented rock I 24 has been poured between the position of slope;Rockfill 23 is rolled under the blotter 26.
Wherein, the outer profile size of horizontal traffic gallery structure 1 and the main structure normal section of domatic access gallery structure 2 For 5.0m × 5.8m (wide × high), headroom is having a size of 3.4m × 4.2m (wide × high), gallery side wall, gallery top plate and gallery bottom plate Thickness is 0.80m, and gallery top plate is in both ends arch camber, and interior arch radius 0.9m, gallery bottom plate inside armpit angle is 300 × 300mm.
It constructs to access gallery structure under above-mentioned deep water, according to above-mentioned horizontal traffic gallery of shown in Fig. 3, constructing, 1) working procedure is the following steps are included: excavated, and end is excavated to bedrock surface 17;2) after excavating cleaning to bedrock surface 17, Pour C15 concrete cushion 15;3) according to Fig. 2, box section 16 is poured on C15 concrete cushion 15, box section 16 pours After having built, spats locking is carried out on the concrete cushion 15 of 01 two sides of gallery bottom plate using cemented rock 14;4) spats is locked Afterwards, 02 two sides of gallery side wall carry out sand rubble 13 backfill and compaction in layers, compacting factor 0.94, side slope 1: 2 (vertical height: Horizontal width);5) after being backfilling and compacted, prevent in 13 layers of the sand rubble being backfilling and compacted upper backfill 1.5m thickness building stones 12 with 2m thickness is grouted It is flushed at the top of anchor block stone 11, the building stones 12 of backfill and the anti-anchor block stone 11 grouted.
According to above-mentioned domatic access gallery structure of shown in Fig. 4, constructing, 1) working procedure is the following steps are included: remove dike Face precast concrete block and blotter, are excavated, and end is excavated to bedrock surface 17;2) it is excavated to 17 check of foundation subsoil of bedrock surface Afterwards, concrete grouting reinforcing is carried out to rockfill 23 is rolled using C30 pea gravel concreten, and pours sand rubble compensation bed course 22, Slip casting bore dia is 110mm, and hole depth is to excavate basal surface or less 7m;3) according to Fig. 2, case is poured on sand rubble compensation bed course 22 Tee section I 16 ', after box section I 16 ' has been poured, using the timely spats of 1: 2 cemented rock 24, and at 01 liang of gallery bottom plate Side is laid with and extends out clear span 0.7m, the toe of wall bed course of thick 0.8m;4) after spats and toe of wall setting cushion are complete, bed course is compensated in sand rubble The above Cast-in-situ Piles in Sand-filling rubble I 25 in 22 two sides, and compaction in layers, compacting factor 0.94, (the vertical height: horizontal wide of side slope 1: 1.5 Degree);5) after being backfilling and compacted, 500mm thickness blotter 26 is poured in spats side, then presses 3 dike face standard of dyke in top surface Restore 21 mask of 200mm thickness precast concrete block.
Wherein, in horizontal gallery structure and the work progress of domatic access gallery structure, use strength grade for C40, Seepage-resistant grade is S12, and freeze proof grade is that the concrete of D200 and steel form pour integral, formation box section 16 and case together Tee section I 16 ', swelling agent used is ZY type high-performance high-efficiency concrete expansion admixture in Concrete.
Load Combination is carried out according to the different phase of construction time and runtime, different safety coefficients is selected to be calculated.
Involved effect has dead load, soil pressure, water pressure (design high-water pressure, design when internal force calculating Low water level pressure, design mean water pressure), heating, cooling, Pedestrian Load (unidirectional, two-way), differential settlement, earthquake make With.
The combination of runtime primary load is as shown in table 1.
Table 1
Note: " ★ " expression effect has this kind of load
Three-dimensional modeling calculating is carried out to access gallery structure using general finite meta software, calculates operating condition as shown in table 2
Table 2
The peak value of each control section internal force design value is obtained according to the requirement of Load Combination according to each operating condition subitem internal force, As shown in table 3.
Table 3
According to table 3 as a result, under deep water access gallery structure carry out sectional reinforcement checking computations it is found that gallery structure cross section most The big ratio of reinforcement is 1.42%, structure general safety.

Claims (8)

1. access gallery structure under deep water, it is characterised in that: including horizontal traffic gallery structure (1) and domatic access gallery structure (2);Horizontal traffic gallery structure (1) basis is arranged on riverbed (6), and one end connects with domatic access gallery structure (2), The other end connects with underwater protective (5);Domatic access gallery structure (2) basis is arranged on the slope of dyke (3), by Pile foundation (7) support, one end connect with horizontal traffic gallery structure (1), and the other end is connect with ground oodle shop (4);The horizontal friendship The main structure normal section of logical gallery structure (1) is box section (16) made of cast-in-situ steel reinforced concrete;The domatic traffic The main structure normal section of gallery structure (2) is box section I (16 ') made of cast-in-situ steel reinforced concrete;
The horizontal traffic gallery structure (1) includes: bedrock surface (17), concrete cushion (15), box section (16), grouts block Stone (14), sand rubble (13) and building stones (12);The concrete cushion (15) is located on bedrock surface (17);The box section (16) on the middle position of concrete cushion (15);The cemented rock (14) is located on concrete cushion (15) simultaneously symmetrical The two sides of box section (16) are arranged in, and two sides cemented rock (14) is by cemented rock horizontal position and cemented rock slope Position composition;The sand rubble (13) is located between cemented rock (14) and building stones (12), and is symmetrically arranged in box section (16) two sides;The building stones (12) are made of building stones horizontal position and building stones ramp position, and anti-anchor block stone (11) is embedded in stone Expect the horizontal position of (12) and is symmetrically arranged in the two sides of box section (16);
The domatic access gallery structure (2) include: bedrock surface (17), sand rubble compensation bed course (22), box section I (16 '), Sand rubble I (25), cemented rock I (24), blotter (26) and precast concrete block (21);The sand rubble compensates bed course (22) it is located on bedrock surface (17) and is made of sand rubble compensation bed course horizontal position and sand rubble compensation bed course ramp position, institute It states and rolls rockfill (23) under sand rubble compensation bed course slope position;The box section I (16 ') is located at sand rubble compensation pad On the middle position of layer (22);The sand rubble I (25), which is located in sand rubble compensation bed course (22) and is symmetrically arranged in box-shaped, cuts The two sides of face I (16 '), and two sides sand rubble I (25) is by sand rubble I horizontal position, sand rubble I upslope position and sand rubble I downslope position composition, the sand rubble I downslope roll rockfill (23) under position;The precast concrete block (21) It is made of horizontal position under horizontal position, precast concrete block on precast concrete block and precast concrete block ramp position, institute It states horizontal position on precast concrete block to be located on sand rubble I (25) horizontal position, horizontal position under the precast concrete block On blotter (26), poured between precast concrete block slope position and sand rubble I (25) upslope position Cemented rock I (24);Rockfill (23) are rolled under the blotter (26).
2. access gallery structure under deep water according to claim 1, it is characterised in that: the box section (16) and institute The box section I (16 ') stated includes gallery bottom plate (01), gallery side wall (02) and gallery top plate (03);The gallery side wall (02) it is provided with concrete backfill on the left of inner surface and walks terraced (07);Plumbing is provided on the right side of gallery side wall (02) inner surface Pipe trench (04);Trench cover (05) is provided with above the plumbing pipe trench (04);The concrete backfill walk terraced (07) and Elevator machine hole (06) is provided among by-wash (04);The concrete backfill walks terraced (07), elevator machine hole (06) and discharge Water pipe ditch (04) is located on gallery bottom plate (01).
3. access gallery structure under deep water according to claim 1 or 2, it is characterised in that: the cemented rock (14) is oblique The gradient at slope position is 1: 2;
The gradient at building stones (12) the slope position is 1: 2;
The gradient at precast concrete block (21) the slope position is 1: 2;
The gradient at sand rubble compensation bed course (22) slope position is 1: 2;
The gradient at sand rubble I (25) the downslope position is 1: 2, and the gradient at sand rubble I upslope position is 1: 1.5.
4. in claims 1 to 3 under deep water described in any claim access gallery structure construction method, feature exists In:
The working procedure of the horizontal traffic gallery structure (1), comprising the following steps: 1) excavated, and end is excavated to base Scar (17);2) after excavating cleaning to bedrock surface (17), casting concrete bed course (15);3) it is poured on concrete cushion (15) Box section (16), the concrete after box section (16) has poured, using cemented rock (14) in gallery bottom plate (01) two sides Spats locking is carried out on bed course (15);4) after spats has locked, sand rubble (13) backfill is carried out simultaneously in gallery side wall (02) two sides Compaction in layers, compacting factor 0.94, side slope 1: 2;5) it after being backfilling and compacted, is backfilled on sand rubble (13) layer being backfilling and compacted 1.5m thickness building stones (12) and grout the thick anti-anchor block stone (11) of 2m, the building stones (12) of backfill with it is neat at the top of the anti-anchor block stone (11) grouted It is flat;
The working procedure of the domatic access gallery structure (2), comprising the following steps: 1) remove dike face precast concrete block and broken Stone bed course, is excavated, and end is excavated to bedrock surface (17);2) after being excavated to bedrock surface (17) check of foundation subsoil, using microlith coagulation Soil carries out concrete grouting reinforcing to rockfill (23) are rolled, and pours sand rubble compensation bed course (22);3) it is compensated in sand rubble Box section I (16 ') is poured on bed course (22), after box section I (16 ') has been poured, is protected in time using cemented rock I (24) Foot, and toe of wall bed course is laid in gallery bottom plate (01) two sides;4) after spats and toe of wall setting cushion are complete, bed course is compensated in sand rubble (22) the above Cast-in-situ Piles in Sand-filling rubble I (25), and compaction in layers, compacting factor 0.94, side slope 1: 1.5;5) it after being backfilling and compacted, is protecting Foot side pours 500mm thickness blotter (26), then restores 200mm thickness concrete by dyke (3) dike face standard in top surface Soil block (21) mask.
5. the construction method of access gallery structure under deep water according to claim 4, it is characterised in that: the domatic traffic The slip casting bore dia of grouting and reinforcing described in gallery structure (2) working procedure step 2) is 110mm, and hole depth is excavation face or less 7m。
6. the construction method of access gallery structure under deep water according to claim 4, it is characterised in that: the domatic traffic From gallery bottom plate (01) two sides to clear span is extended out as 0.7m, thickness is toe of wall bed course in gallery structure (2) working procedure step 3) 0.8m。
7. the construction method of access gallery structure under deep water according to claim 4, it is characterised in that: the horizontal traffic Box section (16) construction in gallery structure (1) working procedure step 3) is using steel form and box section (16) concrete one Rise pour it is integral;Box section I (16 ') construction in domatic access gallery structure (2) working procedure step 3) uses punching block Plate pours integral together with box section I (16 ') concrete.
8. the construction method of access gallery structure under deep water according to claim 4, it is characterised in that: the box section (16) and box section I (16 ') strength grade of concrete is C40, and seepage-resistant grade S12, freeze proof grade is D200, expansion used Agent is ZY type high-performance high-efficiency concrete expansion admixture.
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