CN103982187B - The heavy cylinder bracing means of To Construction of Silo - Google Patents
The heavy cylinder bracing means of To Construction of Silo Download PDFInfo
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- CN103982187B CN103982187B CN201410224175.0A CN201410224175A CN103982187B CN 103982187 B CN103982187 B CN 103982187B CN 201410224175 A CN201410224175 A CN 201410224175A CN 103982187 B CN103982187 B CN 103982187B
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Abstract
The invention discloses the heavy cylinder bracing means of a kind of To Construction of Silo, it comprises by the cylindrical drum vertically extended, some provisions for groutings are vertically arranged at intervals with in the inner chamber of cylindrical drum, provisions for grouting comprises the annular grout pipe be located in the middle part of inner chamber, the outer peripheral edge of annular grout pipe is connected with some radial grout pipes evenly laid radially, the end grouting mouth offered corresponding on cylindrical drum barrel of each radial grout pipe is sealedly and fixedly connected, the vertical grout pipe that hermetically passing top board upwards extends is connected with on annular grout pipe top, the through hole that vertical grout pipe hermetically passing top board correspondence in each provisions for grouting is offered is set up in parallel, also seal at the top board of cylindrical drum and be fixed with for extending the water injection pipe being communicated with ground water filling device and cylindrical drum inner chamber straight up.Structure of the present invention is simple, easy to install, and the construction period is short, efficiency is high, reduces construction costs, solves prior art reinforces comparatively difficulty problem to the layer of sand or soft stratum that are rich in water in vertical shaft.
Description
Technical field
The invention belongs to To Construction of Silo reinforcing technique field, specifically relate to a kind of in To Construction of Silo for vertical shaft interlude rich aquifer sand layer, soft stratum etc. IV heavy cylinder bracing means of To Construction of Silo of reinforcing of class or V class surrounding rock geologic structure.
Background technology
The excavation construction of vertical shaft is all related in mining, constructing tunnel and Hydraulic and Hydro-Power Engineering.Because geological conditions is very complicated; the Unfavorable geology Rotating fields such as IV class or V class surrounding rock often can be run in To Construction of Silo; especially in To Construction of Silo, run into the geological stratification structure that the not cementing sandstone (layer of sand) of Neogene system, shale packsand, loam rock alternating layers or intersection etc. belong to unstable IV class surrounding rock or extremely unstable V class surrounding rock; this geologic structure water content is enriched; easily softening, argillization, disintegration under high artesian, gravity and geostatic stress effect; cause To Construction of Silo that water gushing out with high pressure, quicksand and landslide phenomenon frequently occur, Cheng Jing is very difficult.
Shield method, freezing method, drop shaft sinking, consolidation grouting method etc. are had to the technology that the Unfavorable geology Rotating fields such as IV class or V class surrounding rock carry out construction reinforcement in prior art.The construction cost of shield method and freezing method is very high, and carries out construction reinforcement for the layer of sand being rich in water, soft stratum that vertical shaft interlude occurs and be difficult to technically realize; Drop shaft sinking difficulty of construction is comparatively large, be difficult to the verticality ensureing vertical shaft, and the construction period is longer in work progress; Although and consolidation grouting method in the shaft between section construction time technically feasible, but when in the shaft, section carries out strengthening construction to Unfavorable geology Rotating fields such as IV class or V class surrounding rocks, because working section is narrow and small, execution conditions are limited, thus consolidation grouting can only be carried out by shallow-layer hole, if there is high artesian in rock stratum in boring procedure, artesian water impacts shallow hole drilling and can frequently occur gushing sand and water burst phenomenon, thus effectively cannot carry out consolidation to high artesian loose sand.As can be seen here, with regard to prior art, be there is being rich in the layer of sand of water in vertical shaft interlude, soft stratum carries out construction reinforcement and belong to construction difficult problem, become the bottleneck problem hindering tunnel construction and even whole engineering.
Summary of the invention
The object of the invention is: provide a kind of and construct the heavy cylinder bracing means of To Construction of Silo simple, safe, efficient, economical, with the problem solving the layer of sand being rich in water that prior art cannot effectively occur vertical shaft interlude, soft stratum is reinforced.
The To Construction of Silo of the present invention technical scheme of heavy cylinder bracing means is: the heavy cylinder bracing means of a kind of To Construction of Silo, comprise the cylindrical drum surrounded with the base plate of the top board and bottom that are divided into stack shell top by the stack shell vertically extended, Packed inner chamber is established in cylindrical drum, some provisions for groutings are vertically arranged at intervals with in the inner chamber of cylindrical drum, described provisions for grouting comprises the annular grout pipe be located in the middle part of inner chamber, the outer peripheral edge of annular grout pipe is connected with some radial grout pipes evenly laid radially, the end grouting mouth offered corresponding on cylindrical drum barrel of each radial grout pipe is sealedly and fixedly connected, the vertical grout pipe extended straight up is connected with on annular grout pipe top, the through hole that vertical grout pipe hermetically passing top board correspondence in each provisions for grouting is offered is set up in parallel, on described top board, also sealing is fixed with for extending the water injection pipe being communicated with ground water filling device and cylindrical drum inner chamber straight up.
The single-unit steel loop that the stack shell of described cylindrical drum is surrounded by some steel plates seals section by section to be connected and forms, and described provisions for grouting is by being arranged in corresponding single-unit steel loop with the radial grout pipe that barrel is fixedly connected with.
Reinforcement braced structures is also provided with in described cylindrical drum, this reinforcement braced structures comprises vertical interval and is fixed on the some annular cranse on stack shell internal face and is individually fixed in the cross reinforcing rib on the top board of cylindrical drum and plate inner surface, is also connected with the bearing diagonal of some circumference uniform distributions between the annular cranse in the cross reinforcing rib center of base plate and adjacent single-unit steel loop.
Some vertical spaced stiffeners are also fixed with through on the upwards extension of described top board at described each vertical grout pipe and water injection pipe.
The base plate of described cylindrical drum is also provided with the high pressure valve for discharging vertical shaft inner high voltage gas bottom heavy cylinder and is provided with a preformed hole, preformed hole has been bolted seal cover board.
Also guide frame is respectively equipped with in the top of described cylindrical drum, bottom outside, described guide frame comprises more than the 3 pieces guiding wing plates be obliquely installed be uniformly distributed along the circumference, each guiding wing plate is fixed on top and the bottom margin of cylindrical drum by junction plate correspondence, the top margin being positioned at each guiding wing plate at heavy cylinder top away from the vertical center line of heavy cylinder, is positioned at the vertical center line of base near heavy cylinder of each guiding wing plate bottom heavy cylinder, its top margin away from the vertical center line of heavy cylinder near the vertical center line of heavy cylinder, its base.
Threeway is serially connected with at the arrival end of described water injection pipe.
Non retern valve is respectively arranged with at the end of each radial grout pipe of described provisions for grouting.
The heavy cylinder bracing means of To Construction of Silo of the present invention adopts external diameter to be less than the cylindrical drum of vertical shaft internal diameter, under himself gravity coordinates with water-injection gravity in cylinder, overcome buoyancy of water in vertical shaft by making this cylindrical drum to water filling in cylindrical drum to sink to gradually in vertical shaft, the buoyancy that cylindrical drum bore seal can be utilized to produce in heavy cylinder sinking watching is by controlling the subsidence velocity of water injection rate and waterflood injection rate control cylindrical drum, after being positioned at the construction reinforcement section of layer of sand or the soft stratum being rich in water in cylindrical drum arrival vertical shaft, by spaced provisions for grouting vertical in cylindrical drum, the slurries of grouting are injected gap between cylindrical drum and vertical shaft from well head, after filling intensity reaches requirement, extract the water in vertical shaft and cylindrical drum out and excise the top board of cylindrical drum, excavation supporting can be carried out to the lower sleeping construction section of cylindrical drum bottom after base plate and provisions for grouting.Heavy cylinder bracing means structure of the present invention is simple, cost of manufacture is cheap, and it is simple, convenient, it can carry out construction reinforcement to the geologic structure of IV class occurred in vertical shaft or V class surrounding rock fast and effectively, construction period is short, efficiency is high, reduce construction costs, and take part in the reinforcing of the construction reinforcement section borehole wall due to the stack shell of cylindrical drum, thus there is good consolidation effect, solve prior art is difficult to carry out IV classes such as the layer of sand being rich in water occurred in well or soft stratum or V class surrounding rock effectively reinforcing problem when excavating shaft.
Accompanying drawing explanation
Fig. 1 is the structural representation of To Construction of Silo of the present invention with heavy cylinder bracing means specific embodiment;
Fig. 2 is the structural representation of single-unit steel loop in Fig. 1;
Fig. 3 is perspective view base plate being strengthened braced structures;
Fig. 4 is the A-A sectional drawing in Fig. 1;
Fig. 5 is the top view of stiffener in Fig. 1.
Detailed description of the invention
To Construction of Silo of the present invention uses the specific embodiment of heavy cylinder bracing means as Figure 1-Figure 5, this device comprises by the stack shell 1 vertically extended, the cylindrical drum that the top board 2 being sealingly fastened in stack shell 1 top and the base plate 3 being sealingly fastened in stack shell 1 bottom surround, stack shell 1 and top board 2 and base plate 3 are all adopted steel plate to make and are sealedly connected and fixed by welding realization, thus in stack shell 1, surround airtight inner chamber 4, in the present embodiment, the single-unit steel loop 11 that the stack shell 1 of cylindrical drum is bent by some steel plates is fixedly connected sequentially and forms, inside and outside full weld technique is adopted to be welded and fixed between two joint single-unit steel loops 11, external surface on each single-unit steel loop 11 top is symmetrical is respectively fixed with the hanger 13 being convenient to connect handling apparatus.Vertically in the inner chamber 4 of cylindrical drum be arranged at intervals with some provisions for groutings 5, the structure of each provisions for grouting 5 is as Fig. 1, shown in Fig. 4, it comprises the annular grout pipe 51 be located in the middle part of inner chamber 4, this annular grout pipe 51 is arranged with the vertical center line of cylindrical drum is concentric, on the outer peripheral edge of each annular grout pipe 51, even circumferential is radially provided with some radial grout pipes 52 respectively, the end of each radial grout pipe 52 grouting mouth offered corresponding on the stack shell 1 of cylindrical drum is sealedly and fixedly connected, non retern valve 54 is respectively arranged with near the end of stack shell 1 inwall at each radial grout pipe 52.Each annular grout pipe 51 is also connected to the vertical grout pipe 53 vertically upwards extending to connect the grouting machine that well head is arranged, and each vertical grout pipe 53 is set up in parallel through the through hole offered corresponding on top board 2.In the present embodiment, its in cylindrical drum inner chamber 4 vertical interval be provided with three cover provisions for groutings 5, this three covers provisions for grouting 5 is fixed in the single-unit steel loop 11 of corresponding position respectively by the radial grout pipe 52 that it is arranged, 3 vertical grout pipes 53 of this three covers provisions for grouting 5 are set up in parallel and the through hole seal welding offered corresponding on top board 2 is fixed respectively, and the magnitude setting of this provisions for grouting and installation site reinforce section and thickness and grouting according to To Construction of Silo and require concrete setting.The top board 2 of cylindrical drum also installs by welded seal the water injection pipe 8 being fixed with and extending straight up, the arrival end of water injection pipe 8 is for connecting ground water filling device, the inner chamber 4 of its port of export connecting cylinder cylinder, the arrival end stretching out well head at water injection pipe 8 is also connected in series threeway (depending on not going out in figure), to facilitate while water filling air exhaust in discharge pipe.The base plate 3 of cylindrical drum is provided with the high pressure valve 9 for discharging vertical shaft inner high voltage gas and water under high pressure bottom heavy cylinder and a preformed hole 10, and this preformed hole 10 is by sealing with the bolted seal cover board 10-1 of base plate 3.
For improving the intensity of cylindrical drum, in the present embodiment, it is also provided with reinforcement braced structures in cylindrical drum, this reinforcement braced structures comprises vertical interval and is fixed on some annular cranse 12 on stack shell 1 internal face, this annular cranse can improve the intensity of cylindrical drum stack shell, after avoiding open caisson, stack shell 1 affects grouting thickness evenness by hydraulic pressure effect deforms, and ensures that grouting quality is stablized.In the present embodiment, it is on the internal face of each single-unit steel loop 11, be fixed with the annular cranse 12 that 3 roads bend by channel-section steel respectively, and each annular cranse 12 is fixed by welding is corresponding with each single-unit steel loop 11.Simultaneously, the inner surface being positioned at inner chamber 4 at the top board 2 of cylindrical drum and base plate 3 is also fixed with the cross reinforcing rib 14 be made up of i iron respectively, between the annular cranse in the center of the cross reinforcing rib 14 of base plate 3 and adjacent single-unit steel loop 11, is also connected with the bearing diagonal 15 of some circumference uniform distributions.In heavy cylinder reinforcing process, the seal welding structure of the compression failure base plate 3 of cylindrical drum bottom high-pressure gas and water under high pressure effectively can be avoided by this bearing diagonal 15.
For avoiding each vertical grout pipe 53 and water injection pipe 8 when constructing because length to affect the seal welding structure of top board 2 compared with the raw larger swing of long hair, the vertical grout pipe 53 that direction well head extends on top board 2 and water injection pipe 8 are also provided with some stiffeners 7, each stiffener 7 relative spacing is arranged, it offers respectively the grouting pore 71 passed for vertical grout pipe 53 and the water filling pore 72 passed for water injection pipe 8, each vertical grout pipe 53 and water injection pipe 8 are all welded and fixed with stiffener 7.By vertical spaced stiffener 7, vertical grout pipe 53 and water injection pipe 8 are connected into entirety, the single pipe grown is made very much to wave the stressed overall steel column becoming 4 pipes composition stressed, effectively slow down the amplitude of fluctuation of each pipe, improve the sealing effectiveness of top board 2 and the intensity of each vertical grout pipe 53 and water injection pipe 8 welding position and security reliability.
Also be respectively equipped with at the top of cylindrical drum and bottom outside for ensureing that cylindrical drum accurately sinks to the guide frame of construction reinforcement section in vertical shaft, this guide frame comprises 3 blocks of guiding wing plates 6 of the circumference uniform distribution being divided into cylindrical drum top and bottom, the top being fixed on cylindrical drum that two junction plates that each guiding wing plate 6 connects respectively by correspondence tilt and bottom margin, the vertical center line of the close heavy cylinder of top margin of each guiding wing plate 6 at cylindrical drum top, its base is away from the vertical center line of heavy cylinder, be positioned at the vertical center line of base near heavy cylinder of each guiding wing plate 6 bottom heavy cylinder, its top margin is away from the vertical center line of heavy cylinder, thus make each 3 blocks of guiding wing plates 6 being divided into cylindrical drum top and bottom surround pyramidal structure respectively, be divided into cylindrical drum top, the most width position of each guiding wing plate 6 of bottom is less than the internal diameter of construction reinforcement section in vertical shaft.In construction, cylindrical drum can keep the sinking direction in whole cylindrical drum sinking watching by each guiding wing plate 6, cylindrical drum is made to enter the construction reinforcement section of vertical shaft smoothly and prevent cylindrical drum from occurring larger inclination, the vertical center line of cylindrical drum and the wellhole center line of construction reinforcement section are consistent, thus the uniformity of the thickness that is in the milk between guarantee cylindrical drum and vertical shaft.
During construction, first the first segment single-unit steel loop 11 bottom cylindrical drum will be positioned at, base plate 3, guiding wing plate 6 and bearing diagonal 15 are welded and fixed rear lifting device handling and put into the well head of vertical shaft is also vertical the vertical shaft filling water, by to water filling in this first segment single-unit steel loop 11, overcome buoyancy of water in vertical shaft under making this first segment single-unit steel loop 11 utilize the effect of self gravitation and water-injection gravity to sink, its subsidence velocity is controlled by control water injection rate and waterflood injection rate, after this first segment single-unit steel loop 11 major part sinks in vertical shaft and only stays upper port to stretch out Shaft bank, lift again and be welded and fixed second section single-unit steel loop 11, and continue water filling and make it sink, second section single-unit steel loop 11 major part sinks to after vertical shaft only stays its upper port to stretch out Shaft bank, lift welding Section of three single-unit steel loop 11 again, each provisions for grouting 5 is weldingly fixed on the single-unit steel loop 11 of corresponding position respectively by the radial grout pipe 52 that it connects in advance, the vertical grout pipe 53 that each radial grout pipe 52 connects adopts merogenesis to make with stack shell 1 and follows the connection synchronous welding prolongation of each joint single-unit steel loop 11, mode of sinking section by section is welded in employing like this section by section, until be welded and fixed top board 2 after welding final section single-unit steel loop 11 and each vertical grout pipe 53 and water injection pipe 8 be welded and fixed with top board 2, cylindrical drum is sealed.After cylindrical drum entirety sinks to vertical shaft, between each vertical grout pipe 53 and water injection pipe 8, one piece of stiffener 7 is welded and fixed every a segment distance, make each vertical grout pipe and water injection pipe from separately stressed become overall stressed, improve the intensity of each pipe, avoiding the seal welding structure that it destroys between itself and top board 2 with producing larger swing after extension.After cylindrical drum sinks in vertical shaft the construction reinforcement section needing construction reinforcement, in each provisions for grouting 5, slurries are injected successively by each vertical grout pipe 53 from bottom to up according to the position of each annular grout pipe 51 at ground grouting machine, slurries are assigned in each radial grout pipe 52 through annular grout pipe 51, be injected in the gap between cylindrical drum outer wall and vertical shaft, the non retern valve 54 that each radial grout pipe 52 end is arranged can to avoid in vertical shaft mud etc. to enter in provisions for grouting.When filling intensity arrives water after designing requirement in pump drainage vertical shaft and the water extracted out by water injection pipe 8 in cylindrical drum, then manually go into the well and progressively cut vertical grout pipe, water injection pipe, the top board of cylindrical drum, annular grout pipe etc., retain stack shell 1, open the high pressure valve 9 that base plate 3 is arranged and discharge gases at high pressure bottom cylindrical drum in vertical shaft and water under high pressure, open cover plate 10-1 again, clear up mud bottom cylindrical drum, ponding by reserved opening 10, finally excise base plate 3 excavate and supporting cylindrical drum base plate 3 below lower sleeping construction section.
Claims (7)
1. the heavy cylinder bracing means of To Construction of Silo, it is characterized in that, comprise the cylindrical drum surrounded with the base plate of the top board and bottom that are divided into stack shell top by the stack shell vertically extended, Packed inner chamber is established in cylindrical drum, some provisions for groutings are vertically arranged at intervals with in the inner chamber of cylindrical drum, described provisions for grouting comprises the annular grout pipe be located in the middle part of inner chamber, the outer peripheral edge of annular grout pipe is connected with some radial grout pipes evenly laid radially, the end grouting mouth offered corresponding on cylindrical drum barrel of each radial grout pipe is sealedly and fixedly connected, the vertical grout pipe extended straight up is connected with on annular grout pipe top, the through hole that vertical grout pipe hermetically passing top board correspondence in each provisions for grouting is offered is set up in parallel, on described top board, also sealing is fixed with for extending the water injection pipe being communicated with ground water filling device and cylindrical drum inner chamber straight up, the single-unit steel loop that the stack shell of described cylindrical drum is surrounded by some steel plates seals section by section to be connected and forms, described provisions for grouting is by being arranged in corresponding single-unit steel loop with the radial grout pipe that barrel is fixedly connected with.
2. the heavy cylinder bracing means of To Construction of Silo according to claim 1, it is characterized in that, reinforcement braced structures is also provided with in described cylindrical drum, this reinforcement braced structures comprises vertical interval and is fixed on the some annular cranse on stack shell internal face and is individually fixed in the cross reinforcing rib on the top board of cylindrical drum and plate inner surface, is also connected with the bearing diagonal of some circumference uniform distributions between the annular cranse in the cross reinforcing rib center of base plate and adjacent single-unit steel loop.
3. the heavy cylinder bracing means of To Construction of Silo according to claim 1, is characterized in that, is also fixed with some vertical spaced stiffeners at described each vertical grout pipe and water injection pipe through on the upwards extension of described top board.
4. the heavy cylinder bracing means of To Construction of Silo according to claim 1, it is characterized in that, the base plate of described cylindrical drum is also provided with the high pressure valve for discharging vertical shaft inner high voltage gas bottom heavy cylinder and is provided with a preformed hole, preformed hole has been bolted seal cover board.
5. the heavy cylinder bracing means of To Construction of Silo according to claim 1, it is characterized in that, on the top of described cylindrical drum, bottom outside is also respectively equipped with guide frame, described guide frame comprises more than the 3 pieces guiding wing plates be obliquely installed be uniformly distributed along the circumference, each guiding wing plate is fixed on top and the bottom margin of cylindrical drum by junction plate correspondence, be positioned at the vertical center line of top margin near heavy cylinder of each guiding wing plate at heavy cylinder top, its base is away from the vertical center line of heavy cylinder, be positioned at the vertical center line of base near heavy cylinder of each guiding wing plate bottom heavy cylinder, its top margin is away from the vertical center line of heavy cylinder.
6. the heavy cylinder bracing means of To Construction of Silo according to claim 1, is characterized in that, be serially connected with threeway at the arrival end of described water injection pipe.
7. the heavy cylinder bracing means of To Construction of Silo according to claim 1, is characterized in that, be respectively arranged with non retern valve at the end of each radial grout pipe of described provisions for grouting.
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| CN201410224175.0A CN103982187B (en) | 2014-05-26 | 2014-05-26 | The heavy cylinder bracing means of To Construction of Silo |
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| CN201410224175.0A CN103982187B (en) | 2014-05-26 | 2014-05-26 | The heavy cylinder bracing means of To Construction of Silo |
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| CN103982187A CN103982187A (en) | 2014-08-13 |
| CN103982187B true CN103982187B (en) | 2016-04-27 |
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| CN108560545B (en) * | 2018-05-24 | 2020-10-27 | 中国建筑第八工程局有限公司 | Construction method for preventing hole collapse of rotary digging pile and hole collapse preventing device |
| CN109137952B (en) * | 2018-10-30 | 2020-09-08 | 晋江知保企业管理咨询有限公司 | Reinforcing device and reinforcing method for open caisson in weak soil layer section |
| CN114532189B (en) * | 2022-03-11 | 2023-03-31 | 洛阳水利工程局有限公司 | Greening spraying equipment with water pressure control effect |
| CN118346092B (en) * | 2024-06-18 | 2024-09-03 | 中国船舶集团国际工程有限公司 | Secondary grouting reinforcement structure of large-diameter concrete filled steel tube column and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3958637A (en) * | 1975-05-22 | 1976-05-25 | The United States Of America As Represented By The Secretary Of The Interior | Technique for lining shaft |
| DE19921363C2 (en) * | 1999-05-10 | 2001-05-23 | Rag Ag | Device for forming an abutment for a filling material column to be fixed in shafts or vertical cavities |
| CN101749028B (en) * | 2008-12-16 | 2013-05-29 | 上海广联建设发展有限公司 | Cross-pulling construction method for soft soil zone with high ground water level |
| AU2009201417A1 (en) * | 2009-04-09 | 2010-11-11 | The Rix Group Pty Ltd | Concrete Shaft Lining Rig |
| CN102322069B (en) * | 2011-07-04 | 2013-09-04 | 浙江省交通规划设计研究院 | Underwater combination base of open caisson and steel pipe piles and construction method |
| CN102505704A (en) * | 2011-12-19 | 2012-06-20 | 中国水利水电第五工程局有限公司 | Large open caisson construction method in soft geological shaft |
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