CN106677787B - Vertical shaft repairing and reinforcement structure and repairing and reinforcement construction method - Google Patents
Vertical shaft repairing and reinforcement structure and repairing and reinforcement construction method Download PDFInfo
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- CN106677787B CN106677787B CN201611223879.1A CN201611223879A CN106677787B CN 106677787 B CN106677787 B CN 106677787B CN 201611223879 A CN201611223879 A CN 201611223879A CN 106677787 B CN106677787 B CN 106677787B
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- Prior art keywords
- vertical shaft
- construction
- shaft
- reinforcement
- steel plate
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- NTHWMYGWWRZVTN-UHFFFAOYSA-N Sodium silicate Chemical compound 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- 210000002435 Tendons Anatomy 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagrams Methods 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 238000005755 formation reactions Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
Abstract
Description
Technical field
It is specifically a kind of to can be well solved shaft wall infiltration the invention belongs to geotechnical engineering and mine engineering crossing domain Water, avalanche, the novel vertical shaft repairing and reinforcement structure and repairing and reinforcement construction method for blocking up well problem.
Background technique
Currently, most domestic mining is all using vertical shaft+footrill Mine haul method, with vertical shaft service life Increase, shaft wall lining cutting is gradually worn away damage, causes protolith exposed；Mine feeds intake under Impact Load, and the borehole wall will It collapses；All it be easy to cause the range that collapses to expand in factors such as the poor region of borehole wall rock-mass quality, infiltrations, situation is serious, easily Stifled well is caused, the problems such as vertical shaft is scrapped；Seriously affect production line operation.Currently, reparation and reinforcement technique for vertical shaft collapsing Less, after generally there is the problems such as vertical shaft collapsing, typically addressing shaft building again, pit gear is moved or is updated, and is caused very Huge economic loss.
Summary of the invention
The present invention is insufficient according to prior art, provide it is a kind of for shaft wall avalanche, stifled well the problems such as vertical shaft repair It is added with fixing structure and repairing and reinforcement construction method, the configuration of the present invention is simple, the construction period is short, and it is small on production line influence, convenient for applying Work, repair and replacement can be adapted for vertical shaft and block up well, hole collapse situation.
Technical solution provided by the invention：A kind of vertical shaft repairing and reinforcement structure, it is characterised in that：The ruggedized construction includes Sidewall Surrounding Rock below vertical shaft position to be repaired or the circular base on the borehole wall are set, the steel plate cylinder that is placed on circular base and The water sealing structure being placed on the vertical shaft position borehole wall to be repaired, the water sealing structure are by being drilled with the more slip casting anchors in shaft wall Bar and the multiple drain holes composition for being placed in shaft wall seepage part, each drain hole by the drainpipe that is embedded in the borehole wall with Setting is in pedestal drainpipe connection below；The circular base is fixed on shaft wall or rock mass by more fashioned iron, Top surface is smooth, and steel plate cylinder bottom is fixed on circular base, and Concrete Filled layer is equipped between steel plate cylinder and shaft wall.
The present invention preferably technical solution：The circular base is by reinforcing bar ring beam, more fashioned iron and Concrete Filled layer Composition, and circular base is inserted on shaft wall or rock mass by more fashioned iron, and the concrete by filling is fixed.
The present invention preferably technical solution：The grouted anchor bar be armature boring is taken on the borehole wall, and slip casting formed Water sealing structure.
The present invention preferably technical solution：The steel plate cylinder is the cylindric steel cylinder branch being spliced by muti-piece curved plate Shield.
The construction method of a kind of vertical shaft repairing and reinforcement provided by the invention, it is characterised in that specific step is as follows：
(1) according to vertical shaft infiltration situation and Construction Design Schemes, armature boring slip casting is taken in shaft wall seepage part, The country rock for reinforcing vertical shaft internal fracture and region of seeping water carries out sealing to shaft wall seepage part；Its bolt grouting is according to applying Country rock grade, the infiltration situation of Ministry of worker position determine, especially serious in infiltration in the underground aquaporin for showing crushed zone formation Section, should increase grouting amount, and underground aquaporin is usually to work as well compared with the groundwater seepage path formed in development rock mass in crack It further opens or collapses and expand and form water passage in multi-walled structure crack；
(2) after ejection for water plugging, multiple drain holes are drilled in each seepage part surrounding, and vertically lay in shaft wall Multiple drainpipes being connected to drain hole, each draining bottom of the tube extend to vertical shaft shaft bottom hereinafter, and each drain hole is discharged Water is introduced into the soil layer below of vertical shaft shaft bottom；Drainpipe is the constructing structure of ruggedized construction, and main function is to catchment, drain, Infiltration, which collects, is discharged to what pedestal or less was discharged through footrill, and drainpipe is provided with more, is fixed on the borehole wall；
(3) after drainage system construction is completed, start circular base of constructing, reach III below vertical shaft position to be repaired Construct circular base on the Sidewall Surrounding Rock of grade rock mass standard or the complete borehole wall, due to vertical shaft occur it is damaged after the borehole wall can all have Damage, the complete borehole wall can fewer, so generally pedestal is in the more complete borehole wall or to reach the Sidewall Surrounding Rock of certain standard (BQ) the two combines, and the qualitative features of the gross of III grade of rock mass are：Hard rock, rock mass are relatively broken；Harder rock, rock mass compared with Completely；Compared with soft rock, rock mass is complete；Rock mass basic quality index 450-351.When construction circular base, first in annular base of constructing The reinforcing bar ring beam of the borehole wall position construction pedestal of seat, reinforcing bar ring beam is fashioned iron, steel as made of fashioned iron or rail and reinforcement welding Tendons skeleton ring beam, and by then pouring coagulation in fashioned iron, framework of steel reinforcement ring beam on fashioned iron or the fixed insertion Sidewall Surrounding Rock of rail Soil forms one and is fixed on the ring-shaped platform that on the borehole wall and top surface is smooth；
(4) after basement construction is completed, just start that steel plate cylinder is installed, the steel plate cylinder is using muti-piece arc or semicircle Steel plate scene is spliced, and the arc or semi-circular sheet steel are to use to meet material design requirement heavy wall wear-resisting steel plate, according to Design requirement processing rolls camber or semicircle, and the single-unit height of steel pile casting is according to means of transport, condition of road surface, plate bending machine Etc. combined factors consider；The steel plate cylinder is installed or is segmented installation using monoblock type；Either monoblock type installation or segmentation peace Dress is installed in vertical shaft after can splicing outside well well, can also be assembled in vertical shaft；Using it is assembled outside well when, first will plus The good arc of work or semi-circular sheet steel are transported to vertical shaft aperture, and cylinder, soldered more piece are butted on dedicated platform Cylinder is transported to well head through flat car, is promoted using derrick hoist engine, removes flat car, and derrick hoist engine is transferred to predetermined position, Underground centering leveling, is welded and fixed；After more piece is installed, circumferential welded seam is completed together, and such mode can be according to derrick The factors such as crane capacity, clear height, ground, which is vertically docked, increases, and reduces underground docking, improves construction efficiency；Using assembled in well When, using well head derrick elevator facility, arc or semi-circular sheet steel are put to vertical shaft, and on the circular base of underground in Leveling composition is cylindric；In two kinds of mounting means, reinforcement welding is fixed with concreting or squeezed into steel plate cylinder inside bottom It fixes on the base, rubber fastening band is equipped between steel plate cylinder bottom and pedestal, uses welding between adjacent two pieces of curved plates Mode connect；
(5) using vertical concrete delivery pipe in the good steel plate cylinder of integral installation or the steel plate drum outer wall and well of segmentation installation It fills casting concrete between wall steel pile casting is fixed on vertical shaft inner wall；
The present invention preferably technical solution：Bolt grouting in the step (1) is according to country rock grade and infiltration situation It constructs, wherein rock mass is preferably, seep water smaller area, a ring 4-8 root, length 3-6m, other one ring 8-16 roots of region, length 6-12m；Ring is appropriate to increase according to factors such as grouting pressures in site operation away from for 1.0-1.5m.Due to single hole grouting cement It consumes excessive, takes intermittent slip casting.
The present invention preferably technical solution：Drain hole in the step (2) is drilled with using jumbolter, each The drain hole of seepage part is in quincunx distribution, and the spacing of adjacent two water seepage hole is 0.5-1.0m, and specific pitch-row is according to water percolating capacity Size appropriate adjustment；The floral tube of double-layer nylon cloth tied silk is wrapped with outside insertion in each water seepage hole, water outlet passes through ripple Hose is connect with drainpipe；The drainpipe uses galvanized pipe, and galvanized pipe thread spreading leads to vertical shaft along shaft wall vertically Bottom, and be fixed on shaft wall.
Steps are as follows for the Specific construction of circular base in heretofore described step (3)：A. using drilling machine in annular base A circle or multi-turn fixed jack are drilled on the borehole wall rock mass in seat region to be onstructed, drilling hole amount installs steel plate with specific reference to first time Cylinder, first time casting concrete weight consider that the percussion of casting concrete determines, go into the well and install convenient for material；B. it inserts Fashioned iron or rail are inserted into hole, fashioned iron or rail flange weld batten plate, and fashioned iron or rail exposed length are generally 0.3-0.5m, adopt With the measures such as cushion block guarantee same plane fashioned iron in same level, and by horizontal tube detect ensure level after, closed orifices, Cement injection fixes fashioned iron or rail；C. it after the completion of first row and second row fashioned iron are constructed, is welded laterally between same row Reinforcing bar is connected, vertical fashioned iron, herringbone bridging is welded between row up and down, binds vertically around muscle；D. branch bed die, circumferential side form template, It drills on the borehole wall, row's alignment, squeezes into reinforcing bar up and down, after the completion of side form, welds vertical reinforcement, forms U-shaped, left-hand thread is in section steel beam On, and diagonal brace is set below bed die；E. casting concrete and vibration compacting.
The present invention preferably technical solution：Concrete delivery pipe described in the step (5) is mounted on shaft wall, uses Flanged joint spreading, in concrete delivery pipe installation process, reinforcing bar is squeezed into drilling on the borehole wall, is temporarily fixed on the borehole wall, Reducing to swing influences, and after being installed, segmentation is fixed；Region collapse using varied rigid link, reduces the percussion of concrete, After delivery pipe underground part is installed, then the funnel part of well head is installed, and multiple tracks reinforcing bar grid is set.Concrete delivery pipe PE pipe can be directly used.
The present invention is using bolt grouting sealing and reinforces country rock, and fashioned iron or steel is arranged in the region diversion of shaft wall seepage point Reinforced concrete ring beam pedestal places wear-resisting steel cylinder liner, steel cylinder wall after-pouring concrete.It is set using in shaft wall damaged area It sets bolt grouting and reinforces country rock and sealing, still there is seepage point setting drain hole to concentrate white-out, from top to bottom promote, be discharged in the borehole wall After amount is effectively controlled, the more intact region of vertical shaft Rock Mass is chosen, fashioned iron or reinforced concrete circle beam, steel cylinder are set Be centrally placed on the ring beam pedestal of leveling using hoisting equipment, affected Anti-seeping technology, sluice concentrate white-out to ring beam pedestal with Under, water blockoff is carried out using concrete casting, and by concrete casting height.
The configuration of the present invention is simple, the construction period is short, small on production line influence, convenient for construction, repair and replacement, can be adapted for Vertical shaft blocks up well, hole collapse situation.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is circular base structural schematic diagram of the invention；
Fig. 3 is the overall schematic of steel plate cylinder of the present invention and circular base.
In figure：1-circular base, 1-1-reinforcing bar ring beam, 1-2-fashioned iron, 1-3-Concrete Filled layer, 2-steel plate cylinders, 3-grouted anchor bars, 4-drain holes, 5-vertical shafts collapse groove, 6-Concrete Filled layers, 7-drainpipes, 8-bolt groutings.
Specific embodiment
A step explanation is made to the present invention with reference to the accompanying drawings and examples.As depicted in figs. 1 and 2, a kind of vertical shaft is repaired It is added with fixing structure, including the Sidewall Surrounding Rock below vertical shaft position to be repaired or the circular base 1 on the borehole wall is arranged in, is placed in annular Steel plate cylinder 2 on pedestal 1 and the water sealing structure being placed on the vertical shaft position borehole wall to be repaired, the circular base 1 is mixed by reinforcing bar Solidifying soil ring beam 1-1, more fashioned iron and Concrete Filled layer 1-3 composition, and circular base 1 is inserted into vertical shaft by more fashioned iron 1-2 On the borehole wall or rock mass or the mineral aggregate platform of accumulation, and the concrete by filling is fixed；The circular base 1 passes through more fashioned iron 1-2 is fixed on vertical shaft country rock or the borehole wall or the mineral aggregate platform of accumulation, and top surface is smooth.The water sealing structure is by being drilled with perpendicular More grouted anchor bars 3 of the well borehole wall and the multiple drain holes 4 for being placed in shaft wall seepage part form, and each drain hole 4 passes through The drainpipe 7 being embedded in the borehole wall is connect with setting in pedestal drainpipe below；The grouted anchor bar 3 is taken on the borehole wall Armature boring, and the water sealing structure that slip casting is formed.The steel plate cylinder 2 is the cylindric steel cylinder being spliced by muti-piece curved plate Supporting, 2 bottom of steel plate cylinder are fixed on circular base 1, and Concrete Filled layer 6 is equipped between steel plate cylinder 2 and shaft wall.
Embodiment：The present embodiment is adopted early period specific to Yunnan cement plant mineral aggregate Shaft repair strengthening construction, the pit shaft With Short bolt slip casting measure, water percolating capacity reduces 20-35%, and the borehole wall still collapses, and is insufficient for production requirement.In order to solve well The problem of wall collapses and seeps water is reinforced and is repaired to shaft wall using technical solution in the present invention, specific real Apply that steps are as follows：
(1) armature boring slip casting is taken in shaft wall seepage part according to vertical shaft infiltration situation and design drawing first, The country rock for reinforcing vertical shaft internal fracture and region of seeping water carries out sealing to shaft wall seepage part；Wherein, 0~-110m of pit shaft The borehole wall is preferable, and 4, one ring of anchor pole, every hole depth 3m, ring is away from 1.5m；Pit shaft -110~-235m borehole wall washes away seriously, and rock mass is more broken Broken, 8, every hole depth 6m, one ring of anchor pole, ring is away from 1.0m, and seep water 12, every 9m, one ring of especially severe region anchor pole, ring away from 1.0m；Using M30 cement slurry, 5% waterglass is mixed, single anchor rod grouting amount cement consumes 0.5t, in pit shaft -110m~-150m Section infiltration is collapsed serious position, and grouting amount is increased, and when single hole cement is consumed more than 10t, takes intermittent slip casting, when interval Between 1-2h；
(2) according to design drawing construction sluicing system, drain hole is drilled using jumbolter, buries and wrap up in double-layer nylon outside floral tube Cloth tied silk tightens, and inserts in the hole, and water outlet connects hose and is pooled to drainpipe, and drain hole uses quincuncial arrangement, and pit shaft 0~- 110m spacing is 1.0m, and pit shaft -110~-235m spacing is 0.5m；It vertically lays and multiple is connected to drain hole in shaft wall Drainpipe, each draining bottom of the tube extend to vertical shaft shaft bottom hereinafter, and each drain hole discharge water is introduced vertical shaft shaft bottom or less Soil layer in, drainpipe using galvanized pipe or hose can screw thread or binding spreading, be fixed on the borehole wall；
(3) construction circular base, specific step is as follows：
A. it in the construction area of selection, according to design drawing, is drilled using drilling machine in hole wall, aperture 130mm, hole depth 6m, Every 16 hole of ring, it is two rows of, array pitch 1.0m is arranged up and down, amounts to 32 holes；
B. it is inserted into fashioned iron in the borehole, section steel flange welds batten plate, fashioned iron exposed length 0.3m, and same plane fashioned iron is adopted With measures such as cushion blocks, horizontal tube detection guarantees horizontal, closed orifices, cement injection；
C. after the completion of first row and second row fashioned iron are constructed, 3 ring lateral connection C28 reinforcing bars are welded between same row, on Vertical fashioned iron, herringbone bridging are welded between lower row, are bound vertically around muscle, around muscle spacing 100mm；
D. branch bed die, circumferential side form template, drills on the borehole wall, and row's alignment, squeezes into C28 reinforcing bar up and down, after the completion of side form, Vertical reinforcement is welded, U-shaped button is formed, left-hand thread sets diagonal brace on section steel beam below bed die；
E. casting concrete and vibration compacting form one and are fixed on the ring-shaped platform that on the borehole wall and top surface is smooth；
(4) steel cylinder is installed：
A. the 20mm heavy wall wear-resisting steel plate bought, meets material design requirement, is processed according to design requirement, be rolled into semicircle Shape, single-unit height consider single-unit 1.8m according to combined factors such as means of transport, condition of road surface, plate bending machines；
B. the semicircle steel plate processed is transported to vertical shaft aperture, cylinder is butted on 8m × 8m dedicated platform, this Engineering derrick 12m, clear height 10m hang ability 30T, and steel cylinder is increased to 9.0m, reduce underground docking, improve construction efficiency；
C. soldered 9.0m cylinder is promoted with derrick hoist engine, removes flat car, and derrick hoist engine is transferred to predetermined Position, underground centering leveling, is welded and fixed；After more piece is installed, circumferential welded seam is completed together；
D. it repeats the above process, until mounting height reaches requirement.
(5) after steel plate cylinder is installed, the casting concrete between steel plate cylinder and vertical shaft inner wall, detailed process is as follows：
A. defeated as concrete close to the position of pit shaft side wall installation 110mmPE pipe between steel plate cylinder and vertical shaft inner wall Channel is sent, PE pipe uses flanged joint spreading；
B. in PE pipe installation process, reinforcing bar is squeezed into drilling on the borehole wall, is temporarily fixed on the borehole wall, is reduced and is swung shadow It rings, after being installed, segmentation is fixed；Region collapse using varied rigid link, reduces the percussion of concrete；
C. after PE delivery pipe underground part being installed, then the funnel part of well head is installed, and multiple tracks reinforcing bar lattice is set Grid；
D. using concreting is carried out by PE delivery pipe from stirring concrete, in casting process, the slump, blanking are controlled Rate guarantees that concrete smoothly pours；And well head casting concrete simultaneously, delivery pipe working condition under inspection shaft, in time converge Situations such as reporting plugging, and it is segmented vibrated concrete.
After the construction of above-mentioned reinforcement and repair is completed, goes into the well and check that 0 to -160m steel cylinder inner wall is dry, -160m to -235m The borehole wall is slightly moist, borehole wall non-water flow, is air condensed water；Ring beam has tiny leakage with lower portion, does not influence to keep the safety in production.
After trial production in 1 month, again under on inspection, 0 to -130m steel cylinder inner wall is dry, -130m to -235m the borehole wall Slightly moist, borehole wall non-water flow, ring beam has tiny leakage with lower portion, is 6T/d-9T/d through measuring and calculating flow, scheme reaches expected infiltration Water is no more than 12T/d, obtains significant achievement.
Claims (5)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107859532B (en) * | 2017-10-18 | 2019-04-19 | 煤炭工业太原设计研究院 | A kind of discarded shaft of vertical well processing method of the coal seam stope above and below short distance |
| CN108119144B (en) * | 2017-12-19 | 2019-08-06 | 湖南科技大学 | A kind of different restoring and fastening methods based on shaft wall fracture degree classification |
| 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 |
| CN108915691B (en) * | 2018-06-27 | 2020-02-07 | 北京科技大学 | Waterproof impervious concrete single-layer lining construction method in water-containing bedrock environment |
| 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 |
| CN109826654A (en) * | 2019-03-12 | 2019-05-31 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel ventilation well supporting construction and its construction method |
| CN110424968B (en) * | 2019-07-04 | 2020-07-17 | 北京科技大学 | Shaft reinforcing method based on anchoring and grouting anti-corrosion measures |
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| JP2002188388A (en) * | 2000-12-20 | 2002-07-05 | Shimizu Corp | Vertical shaft structure |
| CN2841963Y (en) * | 2005-09-10 | 2006-11-29 | 中国矿业大学 | Well wall reinforcing device |
| CN101864990A (en) * | 2010-05-20 | 2010-10-20 | 平煤建工集团有限公司 | Water intercepting and conducting device for shaft of vertical well |
| CN102619521B (en) * | 2012-04-19 | 2014-10-29 | 中国矿业大学 | Construction method for vertical shaft bedrock section wall structure |
| CN104612695B (en) * | 2015-01-29 | 2016-08-31 | 湖南科技大学 | One acutely collapses shaft wall restoring and fastening method |
| CN105804769A (en) * | 2016-03-04 | 2016-07-27 | 中交路桥（北京）科技有限公司 | Method for reinforcing tunnel lining through corrugated steel plate |
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