CN204715313U - A kind of underground workshop be arranged in solid rock - Google Patents
A kind of underground workshop be arranged in solid rock Download PDFInfo
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- CN204715313U CN204715313U CN201520306973.8U CN201520306973U CN204715313U CN 204715313 U CN204715313 U CN 204715313U CN 201520306973 U CN201520306973 U CN 201520306973U CN 204715313 U CN204715313 U CN 204715313U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The utility model relates to underground workshop design field, especially relates to a kind of underground workshop be arranged in solid rock.Comprise: main frame hole, main transformer tail lock hole, tail water prop up hole and the main hole of tail water; Described main frame hole and main transformer tail lock cavity parallel are arranged, and the axis direction in main frame hole and main transformer tail lock hole and solid rock move towards identical; Main frame hole is communicated with main transformer tail lock hole by four parallel paths; Described main transformer tail lock hole is propped up hole by four parallel tail water and is communicated with the main hole of tail water.The utility model achieves arranges underground workshop in the solid rock that width is narrower, some special landform and geological conditions can have been adapted to preferably, its scheme science more, the strengthening supporting cost of country rock can be reduced, reduce duration delayed risk, construction period security risk, security of operation, can also solve the ventilating problem of underground power house simultaneously.
Description
Technical field
The utility model relates to underground workshop design field, especially relates to a kind of underground workshop be arranged in solid rock.
Background technology
In fields such as Hydraulic and Hydro-Power Engineering, underground storage engineerings, all relate to the reasonable Arrangement design problem of underground hole group.The particularly underground workshop of China western part, southern areas, its cavity group is larger, often be in high-mountain gorge areas, there is the features such as geostatic stress is high, complex geologic conditions, thus make the stable of large underground hole group country rock and safety problem become very outstanding.
Rock mechanics field associated specialist and underground engineering construction person more and more clearly recognized in recent years, and rock fundamental strength, geostatic stress, wall rock structure face development characteristics, supporting intensity are the key factors determining that underground engineering wall rock is stable.By rational layout design, and take reasonably to excavate and after supporting measure, the stable and safety problem of the stable of large underground hole group country rock and safety problem, particularly high-ground stress environment large underground hole group country rock can be solved preferably.
Concrete design specifications can reference: " powerhouse of hydropower station design specifications " SL266-2014.
But, the design of underground power house is carried out according to above-mentioned specification, there is following problem: when can be used for arranging that underground power house rock mass thickness is limited, the adjustable range of underground power house cavern longitudinal axis and position is little, as carried out the cavern layout by General Requirements, cannot be arranged in the complete rock mass of rock mass in underground power house cavern, power station then cannot adopt underground type.Can only by taking certain technical measures to break through, specification be moved towards the longitudinal axis of main cavern, the restriction of more than Mass Near The Top of Underground Cavity rock mass thickness.
In underground chamber, beam needs larger cross section bending rigidity, bending resistance and shear-carrying capacity to resist larger vertical load.Usual way is that the sectional area by increasing beam improves bearing capacity, if but the sectional dimension of expansion reinforced concrete member simply, can have influence on usage space, and concrete gravity is likely by beam conquassation, the difficulty of construction of concrete in mass is also very large simultaneously.
Hydropower Station Underground minister of defense is built in massif usually, and therefore large, the humid environment of buried depth, is ensure running environment in factory building, requires higher to its ventilation system.Ventilation system is installed on the top of factory building furred ceiling usually, and therefore in order to meet the requirement such as installation and repairing and perforate pipe laying of ventilation equipment, the ceiling structure of factory building is very crucial; Meanwhile, the instructions for use of furred ceiling also demand fulfillment factory building, i.e. thermal insulation, antiseepage, anticorrosion etc.
Utility model content
The purpose of this utility model is to provide a kind of underground workshop be arranged in solid rock, when rock mass thickness is limited, achieves the layout of underground power house.
A kind of underground workshop be arranged in solid rock that the utility model provides, comprising: main frame hole, main transformer tail lock hole, tail water prop up hole and the main hole of tail water;
Described main frame hole and main transformer tail lock cavity parallel are arranged, and the axis direction in main frame hole and main transformer tail lock hole and solid rock move towards identical; Main frame hole is communicated with main transformer tail lock hole by four parallel paths;
Described main transformer tail lock hole is propped up hole by four parallel tail water and is communicated with the main hole of tail water;
Described main frame hole comprises:
Column;
The collar tie beam that column top is made up of crossbeam;
One group of arched girder is provided with between the crossbeam of the relative both sides of collar tie beam.
Further, described solid rock is the rock mass that BQ value is greater than 550, comprising: the conglomerate of granite, syenite, diorite, diabase, basalt, andesite, gneiss, quartz-schist, siliceous slate, quartzite, silicious gangue, quartz sandstone, cherty limestone.
Further, the buried depth in described main frame hole and main transformer tail lock hole is that hole, main frame hole is across 0.87 times.
Further, between described main frame hole and main transformer tail lock hole, each tail water rock mass thickness propped up between hole be hole, main frame hole across 1.0 times.
Further, the angle of described main frame hole and main transformer tail lock hole axis and stress direction is for being not less than 50 °.
Further, described arched girder comprises:
The parallel steel tube of more than two is as the chord member of arched girder;
Connect many diagonal web members of each chord member;
The stirrup of the formation square-section that chord member and diagonal web member are surrounded and be connected the vertical muscle of each stirrup;
Be cast in the peripheral concrete within the scope of stirrup and vertical muscle.
Further, also comprise: be arranged on above arched girder, cover the arch bar of whole main Mass Near The Top of Underground Cavity; The arc of described arch bar and arched girder adapts; Arch bar passes through the cross beam support of arched girder and arched girder both sides.
Further, the arch bar between described adjacent arched girder is arranged many girt strips vertical with arched girder, and the back-up block connecting arched girder and arch bar is set in the position that girt strip is crossing with arched girder.
Further, described arch bar is provided with the air intake being communicated with its upper space and lower space and return air inlet.
Further, the top of described arch bar arranges pressure bulkhead, and the upper space of arch bar is divided into admission space and exhaust space; Described air intake is arranged on the arch bar relative with admission space, and described return air inlet is arranged on the arch bar relative with exhaust space.
The beneficial effects of the utility model are:
(1) achieve arrange underground workshop in the solid rock that width is narrower, some special landform and geological conditions can have been adapted to preferably, its scheme science more, the strengthening supporting cost of country rock can be reduced, reduce duration delayed risk, construction period security risk, security of operation;
(2) have compressed the dike thickness between main frame hole and main transformer tail lock hole, and make four tail water prop up a shared main hole of tail water, hole, under the condition ensureing adjoining rock stability, save space;
(3) described arched girder structure makes full use of the clear and definite feature of composite roof truss power transmission, plays outer concrete and girder-embedded combination advantage, under the prerequisite of control member sectional dimension, realizes higher stiffness of structural member and bearing capacity;
(4) in the simple bending section of arched girder, composite roof truss top-bottom chord serves as pull bar and depression bar respectively, can effectively limit outer concrete crack developing, improves bending rigidity and the anti-bending bearing capacity of beam; In the curved scissors district of beam, composite roof truss diagonal web member serves as diagonal member and depression bar, transmits most of shearing, thus decreases curved scissors district concrete shear stress level, limits diagonal crack and carries out and improve beam shear-carrying capacity;
(5) air intake passage and air-out passage are provided separately, and air intake and air-out can be made to be independent of each other, and form benign cycle, improve the ventilation effect of underground chamber.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model detailed description of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in detailed description of the invention or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The layout schematic diagram of underground workshop in solid rock that Fig. 1 provides for the utility model embodiment;
The main cross section schematic diagram of the underground workshop main frame hole structure that Fig. 2 provides for the utility model embodiment;
Fig. 3 is the cross sectional representation of the arched girder of built-in two chord members;
Fig. 4 is the cross sectional representation of the arched girder of built-in three strings bar;
Fig. 5 is the cross sectional representation of the arched girder of built-in four chord members;
Fig. 6 is the schematic three dimensional views of the arched girder of built-in three strings bar;
Fig. 7 is the position relationship schematic diagram between the arched girder of built-in three strings bar, girt strip and arch bar.
Reference numeral:
A-solid rock; B-main frame hole; C-main transformer tail lock hole;
D-tail water props up hole; The main hole of E-tail water;
1-column; 2-arched girder; 201-peripheral concrete;
202-stirrup; 203-indulges muscle; 204-upper chord;
205-concrete; 206-lower chord; 207-concrete;
208-diagonal web member; The horizontal straight connecting rod of 209-; 3-arch bar;
4-pressure bulkhead; 51-air intake; 52-air outlet;
6-crag; 7-girt strip; 8-back-up block.
Detailed description of the invention
The utility model provides a kind of underground workshop be arranged in solid rock, below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
The present embodiment is for Baise Multipurpose Project, Baise Multipurpose Project is one take flood control as the main large water conservancy hydroelectric engineering having the comprehensive utilization benefits such as generating, irrigation, shipping, water supply concurrently, is also the key project of control and exploitation Yu Jiang and the important symbol engineering of development of the West Regions.Total reservoir storage 56.6 hundred million m
3, main structures is made up of key dam, power station, auxiliary dam and navigation structure, and wherein 2 auxiliary dams and navigation structure are away from the key dam district be made up of key dam and power station.Key dam is full section RCC gravity dam, maximum height of dam 130m; Power Plant is arranged in dam left bank, is propped up the buildings such as hole, the main hole of tail water, access tunnel, ventilation evacuation hole, high voltage cable gallery and tailwater channel formed by inlet channel, intake tower, diversion tunnel, main frame hole, main transformer tail lock hole, tail water.Underground power house (main frame hole) size (long × wide × high) is 147m × 20.5m × 49m, and main transformer tail lock hole size (long × wide × high) is 93.8m × 19.2m × 24.8m.
It is the diabase of 150m ~ 160m that dam body periphery has a horizontal width.Diabase belongs to the one of hard rock, rock hard and compact, and mechanical strength is higher, and BQ value is greater than 550.
The layout schematic diagram of underground workshop in solid rock that Fig. 1 provides for the utility model embodiment; Underground workshop as shown in Figure 1, comprises main frame hole B, main transformer tail lock hole C, tail water props up hole D and the main hole E of tail water.
Described main frame hole B and main transformer tail lock hole C is arranged in parallel, and the axis direction of main frame hole B and main transformer tail lock hole C and solid rock A move towards identical; Main frame hole B is communicated with main transformer tail lock hole C by four parallel paths; Described main transformer tail lock hole C props up hole D by four parallel tail water and is communicated with the main hole E of tail water.
The hole shape of main frame hole B and main transformer tail lock hole C adopts circular arch stalk shape, and tail water props up hole D and the main hole E of tail water adopts gallery shape.
The buried depth of described main frame hole B and main transformer tail lock hole C be B hole, main frame hole across 0.87 times, between main frame hole B and main transformer tail lock hole C, each tail water rock mass thickness propped up between the D of hole be B hole, main frame hole across 1.0 times.
Such scheme achieves arranges underground workshop in the solid rock that width is narrower, some special landform and geological conditions can be adapted to preferably, its scheme science more, the strengthening supporting cost of country rock can have been reduced, reduce duration delayed risk, construction period security risk, security of operation; Have compressed the dike thickness between main frame hole and main transformer tail lock hole, and make four tail water prop up a shared main hole of tail water, hole, under the condition ensureing adjoining rock stability, save space.
The main cross section schematic diagram of the underground workshop main cavern structure that Fig. 2 provides for the utility model embodiment; As shown in Figure 2, underground workshop described in the utility model main cavern structure, comprises column 1, arched girder 2, arch bar 3, pressure bulkhead 4, air intake 51 and air outlet 52.
The concrete structure of main frame hole cross section is as follows:
The shape of cross section in main frame hole is city gate arch, and the position that both sides are close to crag 6 arranges column 1 respectively.The top of column 1 arranges the collar tie beam be made up of crossbeam; One group of arched girder 2 is provided with between the crossbeam of the relative both sides of collar tie beam.Above arched girder 2, arrange the arch bar 3 covering top, whole main frame hole, described arch bar 3 adapts with the arc of arched girder 2; Arch bar passes through the cross beam support of arched girder 2 and arched girder 2 both sides.
Fig. 2 is the cross sectional representation of the arched girder of built-in two chord members; Fig. 3 is the cross sectional representation of the arched girder of built-in three strings bar; Fig. 4 is the cross sectional representation of the arched girder of built-in four chord members; Fig. 5 is the schematic three dimensional views of the arched girder of built-in three strings bar.As Figure 2-Figure 5, arched girder described in the utility model, comprises peripheral concrete 201, stirrup 202, vertical muscle 203, upper chord 204, lower chord 206, concrete 205 and 207, diagonal web member 208, horizontal straight connecting rod 209.
Arched girder 2 is the built-in steel tube-concrete composite structure of truss, usually has the form of structure of two, three or four chord members.
The arched girder cross section of two chord members as shown in Figure 2, adopt two parallel clod washes, welding or jointless structure steel pipe as the upper chord 204 in this structure and lower chord 206, connected by many diagonal web members 208 between upper chord 204 and lower chord 206, diagonal web member 208 is 45 ° with the angle of upper and lower two chord members.Difference fill concrete 205 and 207 in upper chord 204 and lower chord 206, concrete 205 and 207 all adopts self-compacting concrete.Upper chord 204, lower chord 206, diagonal web member 208, concrete 205 and 207 form concrete filled steel tube composite roof truss jointly; At the equidistant colligation of axis many stirrups 202 of concrete filled steel tube composite roof truss outer concrete filled steel tube composite roof truss, connected between each stirrup 202 by some vertical muscle 203, forming cross section is the tubular structure of rectangle.Then pour into a mould peripheral concrete 201 in the scope of tubular structure that formwork surrounds at stirrup 202 and vertical muscle 204, form the built-in heavily loaded beam of composite roof truss.The arched girder structure of two chord members, its cross-sectional area is minimum, and prepare also easy, cost is minimum, but bearing capacity is relatively low, the underground chamber that applicable size is less, not high to requirement for bearing capacity.
As shown in Figure 3, its three-dimensional structure as shown in Figure 5 in the arched girder cross section of three strings bar.With two chord members unlike, three strings bar is made up of two upper chords 204 and a lower chord 206, connected by many horizontal straight connecting rods 209 of equidistantly distribution between two upper chords 204, connect respectively by some diagonal web members 208 between two upper chords 204 and lower chord 206.The stability of the arched girder structure of three strings bar and bearing capacity are all good than the form of structure of two chord members, and the area of cross section is less, and cost is not high, can meet the carrying demand of most underground chambers.Therefore, the arched girder 2 of the present embodiment selects the form of structure of three strings bar.
The arched girder cross section of four chord members as shown in Figure 4, be made up of two upper chords 204 and two lower chords 206, the horizontal straight connecting rod 209 equidistantly distributed respectively by many between two upper chords 204 and two lower chords 206 connects, and connects between upper chord 204 and lower chord 206 respectively by many diagonal web members 208.The cross section of the arched girder structure of four chord members is relatively large, and cost is also higher.
The arched girder structure that this composite roof truss is built-in, makes full use of the feature that composite roof truss power transmission is clear and definite, plays outer concrete and girder-embedded combination advantage, under the prerequisite of control member sectional dimension, realizes higher stiffness of structural member and bearing capacity.In the simple bending section of beam, composite roof truss top-bottom chord serves as pull bar and depression bar respectively, can effectively limit outer concrete crack developing, improves bending rigidity and the anti-bending bearing capacity of beam; In the curved scissors district of beam, composite roof truss diagonal web member serves as diagonal member and depression bar, transmits most of shearing, thus decreases curved scissors district concrete shear stress level, limits diagonal crack and carries out and improve beam shear-carrying capacity; External wrapping concrete can improve its bending rigidity and bearing capacity, improves resistance to overturning, simultaneously its fire resistance and corrosion resistance good, reduce relevant maintenance cost.The rigidity of such arched girder component and bearing capacity are greater than existing various steel pipe truss structures and concrete filled steel tube composite roof truss structure.
Arch bar 3 adopts the combined board structure of die mould steel form, can be shaping by die mould steel form formed by integrally casting, but monobloc cast requires higher to supporting, therefore in order to simplify supporting, accelerating speed of application, being connected respectively by several back-up blocks 8 between arch bar 3 with each arched girder 2, therefore build complete and after reaching requirement at arched girder 2, carrying out the construction of arch bar 3, simplifying the mounting or dismounting of supporting, accelerate speed of application.
Back-up block 8 can make the structures such as steel plate, and is connected by the reinforcing bar of arched girder 2, arch bar 3.
Because arch bar 3 is lightweight structures, in order to strengthen the support strength of the arch bar 3 between two arched girders 2, to ensure to meet the loading demands of ventilation equipment installation and maintenance etc., the arch bar 3 between adjacent arched girder 2 is respectively arranged with one group of girt strip 7 perpendicular with arched girder 2.In order to strengthen the integrated support intensity of arch bar 3 further, the setting position of described girt strip 7 is corresponding with each back-up block 8, each girt strip 7 two ends are connected respectively at the back-up block 8 of correspondence, thus form arch bar 3 support in the two directions respectively by arched girder 2 and girt strip 7 and back-up block 8.
In order to intensified ventilation effect, be provided with pressure bulkhead 4.The upper space of arch bar 3 is separated into three segment spaces by two row's pressure bulkheads 4: the space of the left and right sides is exhaust space, and the space of mid portion is admission space.Air intake 51 is arranged on the arch bar 3 relative with admission space, and air outlet 52 is arranged on the arch bar 3 corresponding with exhaust space.The setting of air intake 51, return air inlet 52, admission space, exhaust space can be arranged according to apparatus arrangement form in concrete factory building size, factory building.
The admission space be provided separately and exhaust space, can make air intake and air-out be independent of each other, and forms benign cycle, improve the ventilation effect of underground chamber.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (10)
1. be arranged in the underground workshop in solid rock, it is characterized in that, comprising: main frame hole, main transformer tail lock hole, tail water prop up hole and the main hole of tail water;
Described main frame hole and main transformer tail lock cavity parallel are arranged, and the axis direction in main frame hole and main transformer tail lock hole and solid rock move towards identical; Main frame hole is communicated with main transformer tail lock hole by four parallel paths;
Described main transformer tail lock hole is propped up hole by four parallel tail water and is communicated with the main hole of tail water;
Described main frame hole comprises:
Column;
The collar tie beam that column top is made up of crossbeam;
One group of arched girder is provided with between the crossbeam of the relative both sides of collar tie beam.
2. the underground workshop be arranged in solid rock according to claim 1, it is characterized in that, described solid rock is the rock mass that BQ value is greater than 550, comprising: the conglomerate of granite, syenite, diorite, diabase, basalt, andesite, gneiss, quartz-schist, siliceous slate, quartzite, silicious gangue, quartz sandstone or cherty limestone.
3. the underground workshop be arranged in solid rock according to claim 1, is characterized in that, the buried depth in described main frame hole and main transformer tail lock hole is that hole, main frame hole is across 0.87 times.
4. the underground workshop be arranged in solid rock according to claim 1, is characterized in that, between described main frame hole and main transformer tail lock hole, each tail water rock mass thickness propped up between hole be hole, main frame hole across 1.0 times.
5. the underground workshop be arranged in solid rock according to claim 1, is characterized in that, the angle of described main frame hole and main transformer tail lock hole axis and stress direction is for being not less than 50 °.
6. the underground workshop be arranged in solid rock according to claim 1, is characterized in that, described arched girder comprises:
The parallel steel tube of more than two is as the chord member of arched girder;
Connect many diagonal web members of each chord member;
The stirrup of the formation square-section that chord member and diagonal web member are surrounded and be connected the vertical muscle of each stirrup;
Be cast in the peripheral concrete within the scope of stirrup and vertical muscle.
7. the underground workshop be arranged in solid rock according to claim 1, is characterized in that, also comprise: be arranged on above arched girder, covers the arch bar of whole main Mass Near The Top of Underground Cavity; The arc of described arch bar and arched girder adapts; Arch bar passes through the cross beam support of arched girder and arched girder both sides.
8. the underground workshop be arranged in solid rock according to claim 7, it is characterized in that, arch bar between adjacent described arched girder is arranged many girt strips vertical with arched girder, and the back-up block connecting arched girder and arch bar is set in the position that girt strip is crossing with arched girder.
9. the underground workshop be arranged in solid rock according to claim 7, is characterized in that, described arch bar is provided with the air intake and return air inlet that are communicated with its upper space and lower space.
10. the underground workshop be arranged in solid rock according to claim 9, is characterized in that, the top of described arch bar arranges pressure bulkhead, and the upper space of arch bar is divided into admission space and exhaust space; Described air intake is arranged on the arch bar relative with admission space, and described return air inlet is arranged on the arch bar relative with exhaust space.
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| CN201520306973.8U CN204715313U (en) | 2015-05-13 | 2015-05-13 | A kind of underground workshop be arranged in solid rock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240299A (en) * | 2015-11-17 | 2016-01-13 | 中国长江三峡集团公司 | Ventilation and exhaust fan system for underground cavern during construction period and implementation method of ventilation and exhaust fan system |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240299A (en) * | 2015-11-17 | 2016-01-13 | 中国长江三峡集团公司 | Ventilation and exhaust fan system for underground cavern during construction period and implementation method of ventilation and exhaust fan system |
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