CN102305082A - Method for relieving and cutterhead repairing of shield machine in weathering groove - Google Patents
Method for relieving and cutterhead repairing of shield machine in weathering groove Download PDFInfo
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Abstract
The invention relates to the technical field of tunnel shield construction, in particular to a method for relieving and cutterhead repairing of a shield machine in a weathering groove. By means of the method, the problems of complex process, long construction period, high cost and the like during shield body relieving and cutterhead repairing in conventional construction are solved. The method comprises the steps of: carrying out grouting reinforcement on collapse body in front of a cutterhead, collapse body above the cutterhead, collapse body above shield tail and collapse body of an anchor cable; building water pressure of cut, eliminating counter-force of tunneling, retreating the shield body and relieving the cutterhead; drilling, exploding and repairing caverns, cleaning the excavated bin and repairing internal structure, body structure and accessory structure of the cutterhead to ensure that the shield body recovers tunneling. The method has the advantages of simple process, short construction period, low construction cost, strong applicability and the like. By means of the method, the relieving and the repairing of the cutterhead of the tunnel are successfully completed; the risk that river water backward pouring into the tunnel is avoided; the shield machine can rapidly recovering the normal tunneling; and the favorable economic benefit and social benefit are obtained.
Description
Technical field
The present invention relates to the tunneling shield technical field of construction, be specially the method that a kind of shield machine is got rid of poverty and cutterhead is repaired in the weathering groove.
Background technology
Along with the development of China's urban construction, underground constructions such as underground rail traffic, cross-river tunnel are increasing, and the shield structure advance distance in tunnel is also more and more longer.Shield method is a kind of Fully-mechanized job practices of modern constructing tunnel; Its plant equipment of mainly using is shield machine; Shield machine carries out earth cutting and rubble fragmentation through cutter in tunnel excavating process; But utilization along with shield method; Shield machine in weathering groove driving because the cutterhead mud cake weares and teares cracking, girff distortion, landslide locking cutterhead and the phenomenon that can't tunnel happens occasionally, so up to the present, the weathering groove caves in the body, and cutterhead is got rid of poverty and reparation is identified as global problem.When running into this type of problem, now common way is to take the active well method, i.e. excavating shaft directly over cutterhead, and cutterhead is excavated in the supporting while excavating always.Carry out the shield body then and get rid of poverty and the cutterhead reparation, but in practice of construction, the weathering groove is positioned at the bottom of the river sometimes, has complex process, speed of application is slow, long in time limit, construction cost is high.And long apart from tunneling process in, the sealing between base bearing and the cutterhead rotary body is prone to lose efficacy, and has shortened the application life of shield machine base bearing, tunnels power simultaneously after the cutterhead reparation and reduces greatly.
Summary of the invention
The present invention carries out the shield body problems such as having complex process, long in time limit, cost height when repairing with cutterhead of getting rid of poverty in order to solve in the existing tunnel shield-tunneling construction, the method that a kind of new shield machine is got rid of poverty in the weathering groove and cutterhead is repaired is provided.
The present invention adopts following technical scheme to realize: the method that a kind of shield machine is got rid of poverty in the weathering groove and cutterhead is repaired may further comprise the steps:
Step 1, landslide body grouting reinforcement
(1) landslide body in cutterhead the place ahead is reinforced: 1. in cutterhead the place ahead landslide body, insert the flexible slip casting iron pipe of tiny rigidity; 2. begin to inject chemical grout from the bottom up; 3. adopt low pressure or do not have the pressure grouting technique, pressure is controlled at 0～10 kg/cm
2
(2) cutterhead top landslide body is reinforced: 1. from the shield machine advance borehole, hole, require to get into landslide body top; 2. progressively inject chemical grout from the left side to the right, reinforce the side of caving in, cutterhead top body; 3. grouting pressure is controlled at below the 0.1MPa, when slip casting begins pressure is arranged, finishes slip casting;
(3) shield tail top landslide body is reinforced: 1. electricity consumption is drilled in the above boring at interval of shield shell afterbody springing line, and welding Grouting Pipe joint; 2. adopt left and right sides while symmetry progressively to pour into chemical grout, reinforce shield tail top landslide body; 3. grouting pressure slowly increases, and simultaneously the shield tail is carried out settlement monitoring, when moving down appears in the shield tail, stops slip casting;
(4) the anchor cable landslide adds solid: 1. utilize space between the cutterhead spoke, squeeze into the long fibre grouted anchor bar to excavation face blossom type; 2. in the fiber anchor pole, inject chemical grout, making landslide add solid and the place ahead basement rock anchoring is integral; 3. grouting pressure is controlled in the 0.1MPa, when the landslide body begins to extrude the chemical grout reactant, stops slip casting;
(5) slip casting effect inspection;
Chemical grout described in the above-mentioned steps can be the special CM13 new material in Guan County at least, and it is mixed by the 1:1 volume ratio by catalyzer and resin, can produce from Qingdao New Yutian Chemical Co., Ltd. at least and buy; Tradition mainly is to be used in the colliery water sealing consolidation, and the present invention is applied in it on Tunnel Landslide body grouting and reinforcing first, and is well more a lot of than polyurethane slip casting effect; Reinforce and generate high molecular intensity height; Can reach 10MPA, and polyurethane there is not intensity on basically, through test of many times checking of the present invention; Be applicable to the zone of fracture stratum consolidation fully, can satisfy technological requirement fully;
Step 2, shield machine are got rid of poverty
(1) set up otch hydraulic pressure: slip casting is closed native door after finishing, and in the excavation storehouse, injects mud then, sets up otch hydraulic pressure at the excavation face, and this hydraulic pressure equals to excavate the side pressure of face soil layer; (2) eliminate the driving counter-force:, link into an integrated entity section of jurisdiction, shield tail back the withdrawal driving oil cylinder slowly clockwise from the bottom simultaneously, elimination shield driving counter-force when otch hydraulic pressure during with i iron greater than excavation face water and soil pressure; (3) the shield body is retreated: through progressively increasing otch hydraulic pressure, when acting on otch ring counter-force greater than shield body and soil body frictional force, the shield body stretches out oil cylinder after slowly falling back, and increase driving oil cylinder working-pressure withstands tunnel duct piece; (4) cutterhead is got rid of poverty: adopt idle running cutterhead driving pattern, utilization progressively increases moment of torsion after cutterhead can dally several circles, till the cutterhead moment of torsion is reduced to normally, reduces excavation storehouse water level then, accomplishes shield body and cutterhead and gets rid of poverty;
The preparation that step 3, cutterhead are repaired
(1) bores quick-fried reparation cavern
Utilize cutterhead spoke gap forwards behind the drilling and blasting in the cutterhead arch, rotating cutter-head is drilling and blasting again, till excavating out the hemispherical hole;
(2) cleaning excavation storehouse
Step 4, cutterhead reparation
(1) the cutterhead internal construction is repaired: take in the excavation storehouse, to repair; (2) the cutterhead body construction is repaired; (3) reparation of cutterhead accessory structure: take in cutterhead is repaired the cavern, to carry out Replacement and Repair.
The reparation of said cutterhead body construction may further comprise the steps: (1) V-type panel weld seam processing a. workman enters the cabin and earlier cutterhead is cleaned, and butt welded seam carries out defect detecting test then, and crackle is carried out identification record; B. bore the aperture of a 5mm respectively in the end of V-type panel crackle; C. after the muddy water that the osculum emptying permeates into from crackle was cut in body front portion, V-type panel cabin, water was rinsed well; D. adopt carbon arc air gouging that back chipping is carried out in the crack and polish; E. the crackle breach that will polish begins to adopt the layering built-up welding to fill and lead up weld seam when being preheating to 250 ℃.F. adopt oil whiting test and ultrasonic testing/ ultrasonic examination dual test; The per pass weld seam even welds three layers and just does penetrating inspections for the first time, after weld seam is accomplished half, remakes the penetrating inspection second time, has welded and has carried out the ultrasonic testing/ ultrasonic examination check again; Discovery weld seam flaw is done over again immediately, till being up to the standards; (2) V-type panel rotary body increases floor: increase the triangle floor in spoke side direction and rotary body connecting place, adopt the crack welding method to make the three integrally welded; (3) the V-type panel increases gusset: increase trapezoidal gusset at spoke panel and axis body face connecting place, adopt the crack welding method to make the three integrally welded; (4) built-up welding is netted wear-resisting: spoke links to each other peripheral 20cm scope with the otch ring in, adopt wear-resisting welding wire to carry out netted wear-resisting accumulation welding; (5) the otch ring is repaired: a. adopts heating means that distortion otch ring between spoke is corrected or cutting; B. otch ring inside adds steel plate and integrally welded between spoke; C. at the serious place welding wearing plate of otch ring outside deterioration.
Adopt said method that the cutterhead body construction is repaired, the advantage of comparing with original method is to improve welding quality, eliminates the cutterhead crack fully, and it is wear-resisting to have increased cutter hub ground simultaneously, has strengthened cutter hub integral rigidity and intensity, guarantees drivage efficiency.
When described cutterhead is repaired; Adopt excision cutter wear detecting system earlier for the sealing between base bearing and the cutterhead rotary body; With steel plate that both are integrally welded then, change the cutterhead swivel joint into anchor tip, the rotary body joint is no longer rotated along with the cutterhead rotation.
When described cutterhead is repaired, be welded into grid-like with i iron in the space between adjacent two spokes on the cutterhead.
Compared with prior art, the present invention has the following advantages:
1, adopts low pressure substep grouting and reinforcing landslide body to carry out the shield body and get rid of poverty, not only stopped slurries and got into the excavation storehouse, and consolidation effect is better with employing otch hydraulic pressure; Using otch hydraulic pressure that shield machine was retreated simultaneously gets rid of poverty; Guarantee that again the shield ventral brush is harmless, only used 15 days and just accomplish shield machine and got rid of poverty and the cutterhead reparation, speed of application be take that active well repairs more than 10 times; Shortened the construction period greatly, this technology has the top standard at home and abroad;
2, adopt grouting and reinforcing to carry out the shield body and get rid of poverty and in the hole, repair cutterhead, than adopting active well to economize on the use of funds 4,000,000 yuan, and take that the space is welded into grid-like with i iron between two spokes; Guarantee that landslide adds solid and normally is cut, not only pass through the landslide section after left and right sides line is repaired smoothly, and once more through a detrition band; Stop to excavate the face landslip, significantly reduce circulation and stop up, the driving effect has improved 2 times than in the past; The tunnel is gone into operation in advance, create considerable economic benefit;
3, before the recovery driving; The exsector mill changes the cutterhead swivel joint into anchor tip after decreasing detection system, has solved base bearing seal failure global problem; Prolonged shield machine base bearing application life; Guarantee that long distance crosses the shield tunnel left and right sides, river line and connect smoothly,, obtained good social benefit for similar engineering from now on provides experience;
4, for repairing cutterhead the space is provided in hole of cutterhead the place ahead excavation, technology is simple, construction safety, quality controlled, cost is low;
5, adopt grouting and reinforcing reparation cutterhead in the hole, reduce construction area and blowdown widely, reduce the consumption of constructional materialss such as steel, cement, meet national energy-saving and emission-reduction policy;
In a word; Adopt shield body of the present invention to get rid of poverty and the cutterhead restorative procedure is constructed; Have advantages such as technology is simple, the construction period is short, construction cost is low, applicability is strong, successfully accomplished getting rid of poverty and repairing of the left and right sides, tunnel line cutterhead, evaded the risk that river pours in down a chimney the tunnel; The fast quick-recovery of shield structure is normally tunneled, obtained good economic benefit and social benefit.
The specific embodiment
The method that a kind of shield machine is got rid of poverty in the weathering groove and cutterhead is repaired may further comprise the steps:
Step 1, landslide body grouting reinforcement
(1) landslide body in cutterhead the place ahead is reinforced: 1. in cutterhead the place ahead landslide body, insert the flexible slip casting iron pipe of tiny rigidity; 2. begin from the bottom up to inject chemical grout, and whether the person of sending someone monitoring have slurries to flow into the excavation storehouse by hole between cutterhead, once find to notify immediately the grouting personnel to stop grouting, and carry out shutoff with cotton, treat to continue grouting again after slurries condense; 3. adopt low pressure or do not have the pressure grouting technique, pressure is controlled at 0～10 kg/cm
2
(2) cutterhead top landslide body is reinforced: 1. from the shield machine advance borehole, hole, require to get into landslide body top; 2. progressively inject chemical grout from the left side to the right, reinforce the side of caving in, cutterhead top body; 3. grouting pressure is controlled at below the 0.1MPa, when slip casting begins pressure is arranged, finishes slip casting;
(3) shield tail top landslide body is reinforced: 1. electricity consumption is drilled in the every 2m of shield shell afterbody springing line and bores φ 10 holes, and welding Grouting Pipe joint; 2. adopt left and right sides while symmetry progressively to pour into chemical grout, reinforce shield tail top landslide body; 3. grouting pressure slowly increases, and simultaneously the shield tail is carried out settlement monitoring, when moving down appears in the shield tail, stops slip casting;
(4) the anchor cable landslide adds solid: 1. utilize space between the cutterhead spoke, squeeze into 5m long fibre grouted anchor bar to excavation face blossom type; 2. in the fiber anchor pole, inject chemical grout, making landslide add solid and the place ahead basement rock anchoring is integral; 3. grouting pressure is controlled in the 0.1MPa, when the landslide body begins to extrude the chemical grout reactant, stops slip casting;
(5) slip casting effect inspection: add solid through radar and survey whether also existence is empty, adopt drilled drawing-core inspection grouting reinforcement degree in the slip casting weak location.If inspection landslide body does not have the cavity, percentage of consolidation is high, finish grouting and reinforcing work, otherwise, continue reinforcement slip casting.
Step 2, shield machine are got rid of poverty
(1) set up otch hydraulic pressure: slip casting is closed native door after finishing, and in the excavation storehouse, injects mud then, sets up otch hydraulic pressure at the excavation face, and this hydraulic pressure equals to excavate the side pressure of face soil layer;
(2) eliminate the driving counter-force:, link into an integrated entity shield tail back 10 endless tube sheets the withdrawal driving oil cylinder slowly clockwise from the bottom simultaneously, elimination shield driving counter-force when otch hydraulic pressure during with i iron greater than excavation face water and soil pressure;
(3) the shield body is retreated: through progressively increasing otch hydraulic pressure, when acting on otch ring counter-force greater than shield body and soil body frictional force, the shield body slowly falls back and stretches out oil cylinder behind the 10cm, and increases the driving oil cylinder working-pressure and withstand tunnel duct piece;
(4) cutterhead is got rid of poverty: adopt idle running cutterhead driving pattern, utilization progressively increases moment of torsion after cutterhead can dally several circles, till the cutterhead moment of torsion is reduced to normally, reduces excavation storehouse water level then, accomplishes shield body and cutterhead and gets rid of poverty;
The preparation that step 3, cutterhead are repaired
(1) bores quick-fried reparation cavern
Utilize cutterhead spoke gap forwards behind the drilling and blasting in the cutterhead arch, rotating cutter-head is drilling and blasting again, till the hemispherical hole of excavating out diameter 2000mm, degree of depth 600mm, if rock stability is poor, adopts i iron to support temporarily;
(2) cleaning excavation storehouse: the utilization pulley delivers from godown ratchel removing in the excavation storehouse, foreign material and finger stone bag weaved the hanging outside the storehouse of packing into;
Before above-mentioned two steps, can carry out cutter head structure inspection and recovery scenario earlier and confirm, be specially:
The one, the inspection cutterhead mainly comprises: 1. cutterhead internal construction inspection: whether the rotary body sealing of inspection cutterhead center lost efficacy, washed away whether system is stopped up, whether stirring rod comes off; 2. cutterhead body construction inspection:, detect and lens examination cutterhead V face weld cracking situation through PT with slide calliper rule inspection cutterhead otch ring abrasion condition; 3. cutterhead accessory structure inspection: through measuring and the girff distortion of abrasion inspection periphery hobboing cutter and the degree of wear inspection center cutter tool rest distortion situation.The 2nd, confirm the cutterhead recovery scenario: the cutterhead internal construction is taked in the excavation storehouse, to repair, and the cutterhead body construction adds weldering through the increase voussoir and the build-up wear-resistant net is reinforced.The cutterhead accessory structure is taked to excavate a hole in cutterhead the place ahead and is carried out Replacement and Repair.
Step 4, cutterhead reparation
(1) the cutterhead internal construction is repaired: take in the excavation storehouse, to repair, concrete steps are:
1. serious wear or the stirring rod that come off are welded again;
2. clear up washing away system pipeline, utilize water under high pressure to dredge simultaneously;
3. adopt excision cutter wear detecting system earlier for the sealing between base bearing and the cutterhead rotary body; With steel plate that both are integrally welded then; Change the cutterhead swivel joint into anchor tip; The rotary body joint is no longer rotated along with the cutterhead rotation, solve swivel joint seal failure technical barrier.
(2) the cutterhead body construction is repaired, and concrete steps are:
1. V-type panel weld seam is handled a. workman and is entered the cabin and earlier cutterhead is cleaned, and butt welded seam carries out defect detecting test then, and crackle is carried out identification record; B. bore the aperture of a 5mm respectively in the end of V-type panel crackle; C. after the muddy water that the osculum emptying permeates into from crackle was cut in body front portion, V-type panel cabin, water was rinsed well; D. adopt carbon arc air gouging that back chipping is carried out in the crack and polish; E. the crackle breach that will polish begins to adopt the layering built-up welding to fill and lead up weld seam when being preheating to 250 ℃.F. adopt oil whiting test and ultrasonic testing/ ultrasonic examination dual test; The per pass weld seam even welds three layers and just does penetrating inspections for the first time, after weld seam is accomplished half, remakes the penetrating inspection second time, has welded and has carried out the ultrasonic testing/ ultrasonic examination check again; Discovery weld seam flaw is done over again immediately, till being up to the standards;
2. V-type panel rotary body increases floor: increase triangle floor (st52-3 steel) in spoke side direction and rotary body connecting place, adopt the crack welding method to make the three integrally welded;
3. the V-type panel increases gusset: increase trapezoidal gusset (st52-3 steel) at spoke panel and axis body face connecting place, adopt the crack welding method to make the three integrally welded;
4. built-up welding is netted wear-resisting: spoke links to each other peripheral 20cm scope with the otch ring in, adopt the wear-resisting welding wire of cr-ni-si-mn-mo to carry out netted wear-resisting accumulation welding;
5. the otch ring is repaired: a. adopts heating means that distortion otch ring between spoke is corrected or cutting; B. otch ring inside adds steel plate and integrally welded between spoke; C. at the serious place welding wearing plate of otch ring outside deterioration.
(3) reparation of cutterhead accessory structure: take in cutterhead is repaired the cavern, to carry out Replacement and Repair, concrete steps are:
1. peripheral hobboing cutter girff is changed: a. carries out processing and fabricating to the girff of changing in factory according to shield structure design drawing, and carries out sign and transport to the building site; B. utilize cavern, cutterhead the place ahead, carry out the burnishing part reason behind excision distortion of employing oxygen welding or the wearing and tearing girff; C. according to the drawing location dimension new girff is installed, is adopted measurement means and accurately locate through symmetrical spot welding measure; D. adopt the built-up welding of cross stratification symmetry to weld new girff, guarantee that weldment is heated evenly, avoid workpiece owing to the inequality of being heated causes displacement; E. welding is installed new cutter after checking and accepting immediately, and carries out the replacing of next girff through rotating cutter-head.
2. periphery protection cutter is changed: press the new periphery protection cutter of drawing location dimension welding behind the periphery protection cutter that a. adopts the carbon arc air gouging removing to damage; B. around periphery protection cutter, add the wear-resisting net of weldering.
Case history:
Tunnel, lion ocean is newly-built, and section is positioned at the middle and south, Guangdong Province to Shenzhen in high-speed railway special line Guangzhou, wide Shenzhen and Hong Kong, is the quick path that connects Hong Kong interiorly.Be positioned at the tunnel, lion ocean of Guangzhou Nansha District, each long 10.8 kilometers on left and right line, tunnel pass through little brave drop, three water channels of husky young drop and lion ocean, be that present domestic mileage is the longest, construction standard is the highest first railway tunnel under water.Tunnel, lion ocean total length 10.8 kms, 350 kilometers of speed per hour desired values are worn Jiang Yueyang three times.Wherein lion foreign-water face width is 3300 meters, and the depth of water reaches 26.6 meters, is the main channel of Zhujiang River shipping, and design hydraulic pressure reaches 0.67MPa, is the domestic long distance driving of major diameter slurry shield that in the uneven rock stratum of soft or hard, adopts first.
In September, 2010, cracking, girff are out of shape the tunnel entrance left and right sides, lion ocean line shield machine because the cutterhead mud cake weares and teares in weathering groove driving, cave in the locking cutterhead and can't tunnel; The inside and outside well-known expert of host country is thought and can't get rid of poverty and repair that to on-the-spot suggestion is torn machine open and changed Mine Method into by the expert; Adopt kinds of schemes to attempt to get rid of poverty and all come a howler,, adopt the cavern to repair the method for cutterhead simultaneously through adopting low pressure of the present invention to reinforce step by step and adopting otch hydraulic pressure to carry out the shield body technology of getting rid of poverty; And between the cutterhead spoke, add weldering grid technology left and right sides line shield machine is come back to life, return to normal driving, guarantee length and connect smoothly apart from crossing the shield tunnel left and right sides, river line; And before recovering driving, the exsector mill changes the cutterhead swivel joint into anchor tip after decreasing detection system; Solve base bearing seal failure global problem, prolonged shield machine base bearing application life, successfully accomplished getting rid of poverty and repairing of left and right sides line cutterhead; Evade the risk that river pours in down a chimney the tunnel, made two shield structures recover normal driving, obtained good economic benefit and social benefit; Created a miracle at home and abroad; Prove that fully this worker's law technology is advanced, applicability is strong, and promotion prospect is good.
Claims (4)
1. the method that a shield machine is got rid of poverty in the weathering groove and cutterhead is repaired is characterized in that may further comprise the steps:
Step 1, landslide body grouting reinforcement
(1) landslide body in cutterhead the place ahead is reinforced: 1. in cutterhead the place ahead landslide body, insert the flexible slip casting iron pipe of tiny rigidity; 2. begin to inject chemical grout from the bottom up; 3. adopt low pressure or do not have the pressure grouting technique, pressure is controlled at 0～10 kg/cm
2
(2) cutterhead top landslide body is reinforced: 1. from the shield machine advance borehole, hole, require to get into landslide body top; 2. progressively inject chemical grout from the left side to the right, reinforce the side of caving in, cutterhead top body; 3. grouting pressure is controlled at below the 0.1MPa, when slip casting begins pressure is arranged, finishes slip casting;
(3) shield tail top landslide body is reinforced: 1. electricity consumption is drilled in the above boring at interval of shield shell afterbody springing line, and welding Grouting Pipe joint; 2. adopt left and right sides while symmetry progressively to pour into chemical grout, reinforce shield tail top landslide body; 3. grouting pressure slowly increases, and simultaneously the shield tail is carried out settlement monitoring, when moving down appears in the shield tail, stops slip casting;
(4) the anchor cable landslide adds solid: 1. utilize space between the cutterhead spoke, squeeze into the long fibre grouted anchor bar to excavation face blossom type; 2. in the fiber anchor pole, inject chemical grout, making landslide add solid and the place ahead basement rock anchoring is integral; 3. grouting pressure is controlled in the 0.1MPa, when the landslide body begins to extrude the chemical grout reactant, stops slip casting;
(5) slip casting effect inspection;
Step 2, shield machine are got rid of poverty
(1) set up otch hydraulic pressure: slip casting is closed native door after finishing, and in the excavation storehouse, injects mud then, sets up otch hydraulic pressure at the excavation face, and this hydraulic pressure equals to excavate the side pressure of face soil layer;
(2) eliminate the driving counter-force:, link into an integrated entity section of jurisdiction, shield tail back the withdrawal driving oil cylinder slowly clockwise from the bottom simultaneously, elimination shield driving counter-force when otch hydraulic pressure during with i iron greater than excavation face water and soil pressure;
(3) the shield body is retreated: through progressively increasing otch hydraulic pressure, when acting on otch ring counter-force greater than shield body and soil body frictional force, the shield body stretches out oil cylinder after slowly falling back, and increase driving oil cylinder working-pressure withstands tunnel duct piece;
(4) cutterhead is got rid of poverty: adopt idle running cutterhead driving pattern, utilization progressively increases moment of torsion after cutterhead can dally several circles, till the cutterhead moment of torsion is reduced to normally, reduces excavation storehouse water level then, accomplishes shield body and cutterhead and gets rid of poverty;
The preparation that step 3, cutterhead are repaired
(1) bores quick-fried reparation cavern
Utilize cutterhead spoke gap forwards behind the drilling and blasting in the cutterhead arch, rotating cutter-head is drilling and blasting again, till excavating out the hemispherical hole;
(2) cleaning excavation storehouse;
Step 4, cutterhead reparation
(1) the cutterhead internal construction is repaired: take in the excavation storehouse, to repair;
(2) the cutterhead body construction is repaired;
(3) reparation of cutterhead accessory structure: take in cutterhead is repaired the cavern, to carry out Replacement and Repair.
2. the method that a kind of shield machine according to claim 1 is got rid of poverty in the weathering groove and cutterhead is repaired is characterized in that the reparation of said cutterhead body construction may further comprise the steps:
(1) V-type panel weld seam is handled
A. the workman enters the cabin and earlier cutterhead is cleaned, and butt welded seam carries out defect detecting test then, and crackle is carried out identification record;
B. bore the aperture of a 5mm respectively in the end of V-type panel crackle;
C. after the muddy water that the osculum emptying permeates into from crackle was cut in body front portion, V-type panel cabin, water was rinsed well;
D. adopt carbon arc air gouging that back chipping is carried out in the crack and polish;
E. the crackle breach that will polish begins to adopt the layering built-up welding to fill and lead up weld seam when being preheating to 250 ℃;
F. adopt oil whiting test and ultrasonic testing/ ultrasonic examination dual test; The per pass weld seam even welds three layers and just does penetrating inspections for the first time, after weld seam is accomplished half, remakes the penetrating inspection second time, has welded and has carried out the ultrasonic testing/ ultrasonic examination check again; Discovery weld seam flaw is done over again immediately, till being up to the standards;
(2) V-type panel rotary body increases floor
Increase the triangle floor in spoke side direction and rotary body connecting place, adopt the crack welding method to make the three integrally welded;
(3) the V-type panel increases gusset
Increase trapezoidal gusset at spoke panel and axis body face connecting place, adopt the crack welding method to make the three integrally welded;
(4) built-up welding is netted wear-resisting
, adopt spoke wear-resisting welding wire to carry out netted wear-resisting accumulation welding linking to each other peripheral 20cm scope with the otch ring in;
(5) the otch ring is repaired
A. adopt heating means that distortion otch ring between spoke is corrected or cutting;
B. otch ring inside adds steel plate and integrally welded between spoke;
C. at the serious place welding wearing plate of otch ring outside deterioration.
3. the method that a kind of shield machine according to claim 1 and 2 is got rid of poverty in the weathering groove and cutterhead is repaired; When it is characterized in that cutterhead is repaired; Adopt excision cutter wear detecting system earlier for the sealing between base bearing and the cutterhead rotary body; With steel plate that both are integrally welded then, change the cutterhead swivel joint into anchor tip, the rotary body joint is no longer rotated along with the cutterhead rotation.
4. the method that a kind of shield machine according to claim 1 and 2 is got rid of poverty in the weathering groove and cutterhead is repaired when it is characterized in that cutterhead is repaired, is welded into grid-like in the space between adjacent two spokes on the cutterhead with i iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110207097XA CN102305082B (en) | 2011-07-23 | 2011-07-23 | Method for relieving and cutterhead repairing of shield machine in weathering groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110207097XA CN102305082B (en) | 2011-07-23 | 2011-07-23 | Method for relieving and cutterhead repairing of shield machine in weathering groove |
Publications (2)
| Publication Number | Publication Date |
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| CN102305082A true CN102305082A (en) | 2012-01-04 |
| CN102305082B CN102305082B (en) | 2013-10-23 |
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| CN201110207097XA Expired - Fee Related CN102305082B (en) | 2011-07-23 | 2011-07-23 | Method for relieving and cutterhead repairing of shield machine in weathering groove |
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| CN110469340A (en) * | 2019-09-27 | 2019-11-19 | 中国水利水电第十工程局有限公司 | A kind of rock burst tunnel double-shielded TBM card machine is got rid of poverty construction method |
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| CN106907157A (en) * | 2017-02-09 | 2017-06-30 | 广东水电二局股份有限公司 | A kind of shield machine normal pressure opens the cabin operation construction method |
| CN106907157B (en) * | 2017-02-09 | 2019-01-04 | 广东水电二局股份有限公司 | A kind of shield machine normal pressure opens the cabin operation construction method |
| CN106703821A (en) * | 2017-02-15 | 2017-05-24 | 河海大学 | Underground tunneling device and tunneling method thereof |
| CN106703821B (en) * | 2017-02-15 | 2019-12-13 | 河海大学 | Underground tunneling device and tunneling method thereof |
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| CN108356433A (en) * | 2018-03-13 | 2018-08-03 | 中铁隧道局集团有限公司 | TBM cutterheads and base bearing repair method |
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| CN109209405A (en) * | 2018-10-15 | 2019-01-15 | 中建八局轨道交通建设有限公司 | The restorative procedure of cutter head of shield machine large circle |
| CN109322671A (en) * | 2018-10-24 | 2019-02-12 | 重庆大学 | A kind of trapped method of getting rid of poverty of shield cutter abrasion |
| CN109322671B (en) * | 2018-10-24 | 2020-05-19 | 重庆大学 | Method for getting rid of worn and trapped shield cutter |
| CN110469340A (en) * | 2019-09-27 | 2019-11-19 | 中国水利水电第十工程局有限公司 | A kind of rock burst tunnel double-shielded TBM card machine is got rid of poverty construction method |
| CN111663960A (en) * | 2019-09-27 | 2020-09-15 | 华北水利水电大学 | Method for solving problem of shield tunneling machine being trapped by blasting |
| CN110924965A (en) * | 2019-12-18 | 2020-03-27 | 沈阳市政集团有限公司 | Construction method for solving shield cutter head stall by grouting reinforcement and internal support method |
| CN111042826A (en) * | 2020-01-15 | 2020-04-21 | 武汉市汉阳市政建设集团有限公司 | Method for repairing shield cutter head cutter box in tunnel |
| CN111997639A (en) * | 2020-08-22 | 2020-11-27 | 中铁隧道局集团有限公司 | Method for getting rid of trouble and reinforcing and improving geology of TBM construction tunnel bad geology section card machine |
| CN112593951A (en) * | 2020-12-07 | 2021-04-02 | 安徽唐兴机械装备有限公司 | Device for rapidly replacing cutter head of push bench and working method thereof |
| CN112593951B (en) * | 2020-12-07 | 2021-11-02 | 安徽唐兴机械装备有限公司 | Device for rapidly replacing cutter head of push bench and working method thereof |
| CN112832797A (en) * | 2021-03-19 | 2021-05-25 | 安徽唐兴机械装备有限公司 | Cutter head escaping driving device and escaping method |
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