CN105569661A - Arrangement structure and construction method of river-crossing underground square - Google Patents
Arrangement structure and construction method of river-crossing underground square Download PDFInfo
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- CN105569661A CN105569661A CN201510657385.3A CN201510657385A CN105569661A CN 105569661 A CN105569661 A CN 105569661A CN 201510657385 A CN201510657385 A CN 201510657385A CN 105569661 A CN105569661 A CN 105569661A
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- 238000010276 construction Methods 0.000 title claims abstract description 53
- 238000007710 freezing Methods 0.000 claims abstract description 67
- 230000008014 freezing Effects 0.000 claims abstract description 67
- 239000002689 soil Substances 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 20
- 239000002826 coolant Substances 0.000 claims description 13
- 239000004567 concrete Substances 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000005429 filling process Methods 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000007781 pre-processing Methods 0.000 claims description 3
- 239000012266 salt solution Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 11
- 238000011161 development Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 210000000003 hoof Anatomy 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides an arrangement structure and a construction method of a river-crossing underground square. The arrangement structure of the river-crossing underground square comprises working wells on both sides of a river, an underground square positioned at the two ends of an underground space and formed by expanding the bottoms of working wells, a plurality of main tunnels communicated with the two ends of the underground square, and a plurality of connecting passages perpendicular to the main tunnels. The construction method of the river-crossing underground square comprises the following steps: S1, constructing the working wells by an underground diaphragm wall technology; S2, constructing a cave of the underground square by a freezing technology, and shoring and lining the inner wall of the cave; S3, constructing the main tunnels by a shielding technology; and S4, constructing the connecting passages by a freezing technology, and lining the connecting passages. Through the technical scheme provided by the invention, the arrangement and the construction of the underground square below the river can be achieved, and areas below the river can be effectively communicated, so that the technical scheme is applicable to development and construction of the underground space of a central gathering zone of a large river-crossing city.
Description
Technical field
The present invention relates to arrangement and the construction method on square, a kind of underground, particularly relate to arrangement and the construction method on square, a kind of Yue Jiang underground.
Background technology
With regard to riverine, along the river with regard to urban belt, broad river surface forms the natural cover for defense, is divided into two downtown area, is divided into the city that two sides are different, has blocked being closely connected therebetween, and causes city, two sides respectively to dilatancy expansion unlimited outside it.For this reason, engineering means how are adopted to develop the underground space of riverine scope, as the tie and the bridge that are communicated with city, two sides, give the commerce and trade of its necessity, meal joy, leisure, people's livelihood function, promote that two sides are seamless to integrate with, control city inflationary spiral, this is the new problem of pendulum at contemporary engineering circles.
In order to realize above-mentioned target, the applicant proposes the conception of " development approach along Yue Jiang square, underground, Jiangcheng District ", be intended to the reasonable combination utilizing contemporary underground space technology, the such as combination of TBM technology, shield technique, freezing method technology, drilling and blasting method technology, Diaphragm Wall, the common framework development technique forming square, Yue Jiang underground.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide and a kind ofly below rivers, build square, underground and the construction method on the square, the Yue Jiang underground regional connectivity be positioned at below rivers can got up.
For achieving the above object, the invention provides the construction method on square, a kind of Yue Jiang underground, comprise the steps:
S1, carry out construction of working shaft respectively in the two sides in river course, downward-extension on described active well, and the bottom of active well is lower than the bottom in the riverbed in river course;
S2, bottom active well, carry out the construction of square, underground, square, described underground stretches out along the sidewall bottom active well;
Described step S2 comprises the steps:
S21, sidewall bottom active well are holed, to obtain the first freezing hole;
S22, in the first freezing hole, drop into freezing pipe, and in freezing pipe, carry cooling medium by refrigeration system, with by the freezing soil around freezing pipe, obtain the first frozen soil body;
S23, take the first frozen soil body, to obtain hole, square, underground body;
S24, supporting is carried out to the inwall of hole, square, underground body serve as a contrast thorough process, to form the first hole body liner;
S3, carry out main constructing tunnel along the sidewall on square, underground, described main tunnel is positioned at below river course, and the two ends in described main tunnel communicate with the square, underground being positioned at two sides, river course respectively.
Further, described main tunnel has many, and the construction method on square, described Yue Jiang underground also comprises the steps:
S4, between adjacent two main tunnels, carry out linking passage construction, the two ends of described linking passage communicate with described two adjacent main tunnels respectively.
Further, described step S4 comprises the steps:
S41, outwards to hole along the sidewall in main tunnel, to obtain the second freezing hole;
S42, in the second freezing hole, drop into freezing pipe, and in freezing pipe, carry cooling medium by refrigeration system, with by the freezing soil around freezing pipe, obtain the second frozen soil body;
S43, take the second frozen soil body, be connected passage hole body to obtain;
S44, supporting is carried out to the inwall being connected passage hole body serve as a contrast thorough process, to form the second hole body liner.
Further, described step S24 also comprises the steps: S241, completes after supporting serves as a contrast thorough process, stop carrying cooling medium in freezing pipe, after the first frozen soil body outside described first hole body liner melts, region is melted to the first frozen soil body and carries out grouting filling process.
Further, in described step S22, utilize cold-producing medium by brine-cooled to-25 DEG C ~-30 DEG C, to obtain described cooling medium by freezing equipment.
Further, utilize circulation pump that-25 DEG C ~-30 DEG C refrigerated brines are sent into freezing pipe, and the salt solution utilizing circulation pump to make to flow out from freezing pipe is back to freezing equipment.
Further, in described step S24, adopt low-temperature high-early strength concrete to carry out supporting and serve as a contrast thorough process.
Further, described step S1 comprises the steps:
S11, excavation are positioned at the deep trouth of periphery, active well pre-processing area;
S12, in described deep trouth, insert reinforcing cage;
S13, in reinforcing cage concreting from bottom to top, until obtain on horizontal section in enclosed active well wall;
S14, the soil body in active well wall to be excavated, thus obtain active well.
Further, before carrying out described step S21, first cut the active well wall be positioned at bottom active well, and cast-in-place some steel concrete columns support in the cut place of active well wall.
Further, shield machine is utilized to carry out main constructing tunnel in described step S3.
As mentioned above, the construction method on the square, Yue Jiang underground that the present invention relates to, has following beneficial effect:
The construction method on square, Yue Jiang underground of the present invention, by the first downward construction work well in two sides, river course, square, underground is built into again by digging bottom active well, and then below river course, build the main tunnel communicated with square, underground, thus realize below rivers, build square, underground, and the region be positioned at below rivers is communicated with effectively.
Another technical problem that the present invention will solve is that providing a kind of can make full use of the region be positioned at below rivers, and the arrangement on the square, Yue Jiang underground this regional connectivity can got up.
For achieving the above object, the invention provides the arrangement on square, a kind of Yue Jiang underground, comprise be positioned at two sides, river course and vertically along the active well stretched, along square, the outward extending underground of the sidewall bottom active well, the main tunnel that communicates with the square, underground being positioned at two sides, river course, the bottom of active well is lower than the bottom in the riverbed in river course, and main tunnel is positioned at the below in river course.
Further, main tunnel has many, and the arrangement on square, Yue Jiang underground also comprises the linking passage communicated with adjacent two main tunnels.
As mentioned above, the arrangement on the square, Yue Jiang underground that the present invention relates to, has following beneficial effect:
The arrangement on square, Yue Jiang underground of the present invention, by building the active well to downward-extension in two sides, river course, arrange along square, active well sidewall outward extending underground again bottom active well, thus the region be positioned at below rivers is fully utilized, the last main tunnel that setting communicates with square, underground below rivers again, thus the regional connectivity below rivers is got up.
Accompanying drawing explanation
Fig. 1 is the arrangement schematic diagram on square, Yue Jiang underground of the present invention.
Fig. 2 is A-A sectional view in Fig. 1.
Fig. 3 is connected passage construction process schematic in the present invention.
Fig. 4 is construction of working shaft process schematic in the present invention.
Element numbers explanation
1 active well
11 deep trouths
2 square, undergrounds
3 main tunnels
31 temporary support columns
4 are connected passage
41 second freezing holes
42 permafrost regions
43 second hole body liners
44 are connected passage hole body
5 river courses
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this manual can understand other advantages of the present invention and effect easily.
Notice, structure, ratio, size etc. that this manual institute accompanying drawings illustrates, content all only in order to coordinate manual to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this manual as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
In the present embodiment, the width in river course 5 is defined as left and right directions, meanwhile, the length direction in river course 5 is defined as fore-and-aft direction.
As depicted in figs. 1 and 2, the invention provides the construction method on square, a kind of Yue Jiang underground, comprise the steps:
S1, carry out active well 1 respectively in the two sides, left and right in river course 5 and construct, downward-extension on active well 1, and the bottom of active well 1 is lower than the bottom in the riverbed in river course 5;
S2, bottom active well 1, carry out square, underground 2 construct, square, underground 2 extends along sidewall bottom active well 1 to surrounding respectively, in the present embodiment, extend forward along the front side wall bottom active well 1 time construction in square, underground 2 and extend back along the rear wall bottom active well 1;
Step S2 comprises the steps:
S21, sidewall bottom active well 1 are holed, to obtain the first freezing hole;
S22, in the first freezing hole, drop into freezing pipe, and in freezing pipe, carry cooling medium by refrigeration system, with by the freezing soil around freezing pipe, obtain the first frozen soil body;
S23, take the first frozen soil body, to obtain hole, square, underground body;
S24, supporting is carried out to the inwall of hole, square, underground body serve as a contrast thorough process, to form the first hole body liner;
S3, carry out main tunnel 3 along the sidewall on square, underground 2 and construct, main tunnel about 3 extends, with across river course 5 lower zone, and the two ends, left and right in main tunnel 3 communicate with the square, underground 2 being positioned at two sides, river course about 5 respectively.
The construction method on square, Yue Jiang underground of the present invention, by at the downward construction work well 1 in the two sides, left and right in river course 5, and Enlargement excavation builds up square, underground 2 bottom active well 1, and below river course 5, build the main tunnel 3 communicated with active well 1, thus realize carrying out square, underground 2 in stratum below rivers and construct, and the region be positioned at below rivers is communicated with effectively.
Occur that thaw collapse is out of shape after melting for preventing the first frozen soil body outside above-mentioned first hole body liner, above-mentioned steps S24 also comprises the steps:
S241, completing after supporting serves as a contrast thorough process, stopping carrying cooling medium in freezing pipe, after the first frozen soil body outside described first hole body liner melts, region being melted to the first frozen soil body and carries out grouting filling process.
For making the work progress economy, effectively on square, above-mentioned underground 2, when carrying out square, underground 2 and constructing, can by the incremental form of construction work of round trip unit, the work progress of each round trip unit comprises above-mentioned steps S21 ~ S24.First freezing hole by facing upward, level, nutation three kinds of angles are that plum blossom-shaped is arranged, its hole depth is frozen soil strength with first place round trip unit construction stability can be protected to determine for principle.
For ease of walking between the square, underground 2 of people in the stratum of two sides, river course 5, as shown in Figure 1, in the present invention, main tunnel 3 has many, simultaneously, walk between adjacent two main tunnels 3 for ease of people, the construction method on square, Yue Jiang underground of the present invention also comprises the steps:
S4, carry out between adjacent two main tunnels 3 before and after the construction of linking passage 4 that extends, the rear and front end being connected passage 4 communicates with described two adjacent main tunnels 3 respectively.
In the present invention, the spacing in many main tunnels 3 controls by the footpath, hole being not less than 3 times of main tunnels 3, and under the concrete number base area in main tunnel 3, the exploitation scale on square 2 is determined.In like manner, in order to ensure that the backbone network that main tunnel 3 and linking passage 4 are formed is evenly distributed, the spacing being connected passage 4 still controls by being not less than 3 times of footpaths, hole being connected passages 4, and the concrete number of linking passage 4 is determined according to the width in river course 5.
As shown in Figure 1, two main tunnels 3 corresponding to central area position, square, underground 2 can be used as unidirectional walkway, and the direct of travel of two unidirectional walkways is contrary, thus be convenient to pedestrian by and safety management.Meanwhile, in the present invention, many main tunnels 3 and many linking passages 4 form Connected network jointly, thus are extended in all direction in the region be positioned at below river course 5, and then make this region more effectively can serve the life of people.
As shown in Figure 3, above-mentioned steps S4 comprises the steps:
S41, outwards to hole along the sidewall in main tunnel 3, to obtain the second freezing hole 41;
S42, in the second freezing hole 41, drop into freezing pipe, and in freezing pipe, carry cooling medium by refrigeration system, with by the freezing soil around freezing pipe, obtain the second frozen soil body;
S43, take the second frozen soil body, be connected passage hole body 44 to obtain;
S44, supporting is carried out to the inwall being connected passage hole body 44 serve as a contrast thorough process, to form the second hole body liner 43.
Occur that thaw collapse is out of shape after melting for preventing the second frozen soil body outside above-mentioned second hole body liner 43, above-mentioned steps S44 also comprises the steps:
S441, completing after supporting serves as a contrast thorough process, stopping carrying cooling medium in freezing pipe, after the second frozen soil body outside described second hole body liner 43 melts, region being melted to the second frozen soil body and carries out grouting filling process.
In above-mentioned steps S22 and step S42, utilize cold-producing medium by brine-cooled to-25 DEG C ~-30 DEG C, to obtain described cooling medium by freezing equipment.Meanwhile, the present invention utilizes circulation pump that-25 DEG C ~-30 DEG C refrigerated brines are sent into freezing pipe, and the salt solution utilizing circulation pump to make to flow out from freezing pipe is back to freezing equipment, thus realizes circulation, the sustainable supply of refrigerated brine.In addition, adopt liquid ammonia as cold-producing medium in the present embodiment; Freezing pipe adopts the seamless steel pipe of endcapped; Use for ease of operation, freezing equipment is arranged in working surfaces.
All adopt the mode of concreting to carry out supporting in above-mentioned steps S24 and step S44 and serve as a contrast thorough process.Simultaneously, after surrounding soil being freezed owing to utilizing above-mentioned-25 DEG C ~-30 DEG C refrigerated brines in the present invention, the frozen soil body, i.e. above-mentioned first frozen soil body and the second frozen soil body, its temperature of freezing face place is lower, usually be low to moderate-5 DEG C ~-10 DEG C, therefore, preferably adopt low-temperature high-early strength concrete to carry out supporting in step S24 and step S44 and serve as a contrast thorough process.
The present invention is by freezing for frozen soil by weak soil; thus increase the strength and stability of the soil body self; and the contacting of isolated itself and underground water; as shown in Figure 3; second frozen soil body occupies region area and is greater than district to be onstructed, thus can carry out driving, the lining construction of underground space engineering under the protection of the frost wall at the second frozen soil body edge.Therefore, frost wall is in fact a kind of temporary support structures.
As shown in Figure 3, in above-mentioned steps S41, the second freezing hole 41 by facing upward, level, nutation three kinds of angles are that plum blossom-shaped is arranged, wherein many groups of the second freezing holes 41 of horizontal direction, its two ends respectively tunnel 3 main with two are communicated with; And face upward, second freezing hole 41 in nutation direction, its perforate end is in the two ends being connected passage 4.
For ease of construction, as shown in Figure 4, in the present embodiment, the plane geometric shape of active well 1 is rectangle.
As shown in Figure 4, above-mentioned steps S1 comprises the steps:
S11, excavation are positioned at the deep trouth 11 of periphery, active well 1 pre-processing area;
S12, in described deep trouth 11, insert reinforcing cage;
S13, in reinforcing cage concreting from bottom to top, until obtain on horizontal section in enclosed active well wall;
S14, the soil body in active well wall to be excavated, thus obtain active well 1.
In above-mentioned steps S11, special-purpose machinery grooving can be adopted to grab bucket and to excavate deep trouth 11.For ease of construction, in step s 13, section construction mode can be adopted obtain on horizontal section in enclosed active well wall, namely enclosed active well wall is surrounded by multistage active well wall, the construction method of every section of active well wall to adopt in above-mentioned steps S11, step S12 and step S13 in reinforcing cage concreting from bottom to top, comprise underwater concreting with tremie method, then circulation also finally completes the construction of multistage active well wall successively.Meanwhile, in the present invention, active well wall is made up of concrete, thus has the functions such as antiseepage, gear soil, load-bearing and support.In addition, in excavation deep trouth 11 process, protective action can be played to the sidewall of deep trouth 11 by mud, be out of shape to prevent deep trouth 11 or cave in.
Because active well wall is made up of concrete, therefore, before carrying out above-mentioned steps S21, first need cut the active well wall be positioned at bottom active well 1, and cast-in-place some steel concrete columns support in the cut place of active well wall, special needs support at the rotation angle position cast-in-situ reinforced concrete column shape of active well wall, in order to ensure that the space structures on square, underground 2 is stablized and the safety of postorder construction operation.
Utilize shield machine to carry out main tunnel 3 in above-mentioned steps S3 to construct, described shield machine is with guard shield.The concrete steps that the present invention utilizes shield machine to carry out constructing in main tunnel 3 are as follows:
S31, soil layer excavate, and namely utilize the cutterhead cutting soil of shield machine front end, and utilize other equipment to be transported by the soil body under cutting;
S32, propelling correction, namely utilize the mounted lining segment of shield machine afterbody as the strong point, and utilize jack to promote shield machine advance;
S33, lining cutting are assembled, and namely the precast concrete lining segment of assembled shield machine afterbody successively, to form tunnel duct piece, and forms main tunnel wall;
S34, lining cutting pressure injection, the space namely between filling shield machine afterbody and tunnel duct piece.
The shell of above-mentioned shield machine and tunnel duct piece have supporting surrounding weak soil, prevent from caving in tunnel, the effect such as shrinkage strain.Shield machine profile great majority are circular, also have the form such as ellipse, semicircle, the shape of a hoof, box-shaped, Double Circle in addition.In addition, the object of its lining cutting pressure injection is to prevent ground settlement, improves the stress of tunnel duct piece in time, and strengthens the water-proof function of main tunnel wall.
Injected hole place at tunnel duct piece in above-mentioned steps S41 outwards holes, and to obtain the second freezing hole 41, thus avoids offering in process at the second freezing hole 41 damaging tunnel duct piece self-strength.In addition, in above-mentioned steps S43, as shown in Figure 3, first need after being connected the weak soil in passage soft soil layer and permafrost region 42 and all freezing, by the cross dimensions cutting tunnel duct piece being connected passage 4, to form the mouth of linking passage 4 behind the door, then carry out subsequent construction.In addition, by installing temporary support columns 31 in main tunnel 3, to strengthen the intensity in main tunnel 3.
Above-mentioned active well 1 is in the invention process process, for assembled, the dismounting of shield machine and other equipment, maintenance, turnover and subsequent construction ventilation, slagging tap etc. provides space, simultaneously, after the present invention all implements completion, active well 1 can be used as again the import and export of people-to-people contacts, freight transportation.Square, underground 2, in whole construction period, is mainly used in the activity space that shield machine turns around to turn to, and what be beneficial to this heading equipment is cycled to repeat utilization, is re-used as the place that passenger flow is assembled, scale manages after completion.
In addition, as depicted in figs. 1 and 2, the present invention also provides the arrangement on square, a kind of Yue Jiang underground, comprise and be arranged in two sides, river course 5 and vertically along the active well 1 stretched, the square, underground 2 extended along the sidewall bottom active well 1 to surrounding, the main tunnel 3 that communicates with the square, underground 2 on the stratum being positioned at two sides, river course 5, the bottom of active well 1 is lower than the bottom in the riverbed in river course 5, and main tunnel 3 is positioned at the below in river course 5.In the present embodiment, square, underground 2 extends forward along the front side wall of active well 1 and extends back along the rear wall bottom active well 1.The present invention is by building the active well 1 to downward-extension in two sides, river course 5, arrange along square, active well 1 sidewall outward extending underground 2 again bottom active well 1, thus the region be positioned at below rivers is fully utilized, the last main tunnel 3 that setting communicates with square, underground 2 below rivers again, thus the regional connectivity below rivers is got up.
For increasing the negotiability between the square, underground 2 of two sides, river course 5, as shown in Figure 1, in the present invention, main tunnel 3 has many, the arrangement on square, Yue Jiang underground of the present invention also comprises the linking passage 4 communicated with adjacent two main tunnels 3, utilize many of being arranged between main tunnel 3 to be connected passage 4, thus adjacent two main tunnels 3 are effectively communicated with to get up.In the present embodiment, many main tunnels 3 are parallel to each other, and are connected passage 4 perpendicular with main tunnel 3.
In the present embodiment, active well 1, square, underground 2, main tunnel 3 and be connected the bottom surface of passage 4 and be all in same level.
In sum, the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (12)
1. the construction method on square, Yue Jiang underground, is characterized in that, comprises the steps:
S1, to carry out active well (1) construction respectively in the two sides of river course (5), the upper downward-extension of described active well (1), and the bottom of active well (1) is lower than the bottom in the riverbed of river course (5);
S2, active well (1) bottom carry out square, underground (2) construction, square, described underground (2) along active well (1) bottom sidewall stretch out;
Described step S2 comprises the steps:
S21, active well (1) bottom sidewall on hole, to obtain the first freezing hole;
S22, in the first freezing hole, drop into freezing pipe, and in freezing pipe, carry cooling medium by refrigeration system, with by the freezing soil around freezing pipe, obtain the first frozen soil body;
S23, take the first frozen soil body, to obtain hole, square, underground body;
S24, supporting is carried out to the inwall of hole, square, underground body serve as a contrast thorough process, to form the first hole body liner;
S3, to carry out main tunnel (3) construction along the sidewall of square, underground (2), described main tunnel (3) is positioned at below, river course (5), and the two ends in described main tunnel (3) communicate with the square, underground (2) being positioned at river course (5) two sides respectively.
2. the construction method on square, Yue Jiang underground according to claim 1, it is characterized in that, described main tunnel (3) has many, and the construction method on square, described Yue Jiang underground also comprises the steps:
S4, carry out between adjacent two main tunnels (3) linking passage (4) construction, the two ends of described linking passage (4) communicate with described two adjacent main tunnels (3) respectively.
3. the construction method on square, Yue Jiang underground according to claim 2, it is characterized in that, described step S4 comprises the steps:
S41, outwards to hole along the sidewall of main tunnel (3), to obtain the second freezing hole (41);
S42, drop into freezing pipe in the second freezing hole (41), and in freezing pipe, carry cooling medium by refrigeration system, with by the freezing soil around freezing pipe, obtain the second frozen soil body;
S43, take the second frozen soil body, be connected passage hole body (44) to obtain;
S44, the inwall being connected passage hole body (44) is carried out to supporting and serves as a contrast thorough process, to form the second hole body liner (43).
4. the construction method on square, Yue Jiang underground according to claim 1, it is characterized in that, described step S24 also comprises the steps: S241, completes after supporting serves as a contrast thorough process, stop carrying cooling medium in freezing pipe, after the first frozen soil body outside described first hole body liner melts, region is melted to the first frozen soil body and carries out grouting filling process.
5. the construction method on square, Yue Jiang underground according to claim 1 or 3, is characterized in that, in described step S22, utilizes cold-producing medium by brine-cooled to-25 DEG C ~-30 DEG C, to obtain described cooling medium by freezing equipment.
6. the construction method on square, Yue Jiang underground according to claim 5, is characterized in that: utilize circulation pump that-25 DEG C ~-30 DEG C refrigerated brines are sent into freezing pipes, and the salt solution utilizing circulation pump to make to flow out from freezing pipe is back to freezing equipment.
7. the construction method on square, Yue Jiang underground according to claim 1, is characterized in that, in described step S24, adopts low-temperature high-early strength concrete to carry out supporting and serves as a contrast thorough process.
8. the construction method on square, Yue Jiang underground according to claim 1, it is characterized in that, described step S1 comprises the steps:
S11, excavation are positioned at the deep trouth (11) of active well (1) periphery, pre-processing area;
S12, in described deep trouth (11), insert reinforcing cage;
S13, in reinforcing cage concreting from bottom to top, until obtain on horizontal section in enclosed active well wall;
S14, the soil body in active well wall to be excavated, thus obtain active well (1).
9. the construction method on square, Yue Jiang underground according to claim 8, it is characterized in that, before carrying out described step S21, first cutting is positioned at the active well wall of active well (1) bottom, and cast-in-place some steel concrete columns support in the cut place of active well wall.
10. the construction method on square, Yue Jiang underground according to claim 1, is characterized in that, utilizes shield machine to carry out main tunnel (3) construction in described step S3.
The arrangement on square, 11. 1 kinds of Yue Jiang undergrounds, it is characterized in that, comprise and be positioned at river course (5) two sides and vertically along the active well (1) stretched, square, the sidewall outward extending underground (2) along active well (1) bottom, the main tunnel (3) that communicates with the square, underground (2) being positioned at river course (5) two sides, the bottom of described active well (1) is lower than the bottom in the riverbed of river course (5), and described main tunnel (3) is positioned at the below of river course (5).
12. according to the arrangement on square, Yue Jiang underground described in claim 11, it is characterized in that, described main tunnel (3) has many, and the arrangement on square, described Yue Jiang underground also comprises the linking passage (4) communicated with adjacent two main tunnels (3).
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