CN202381098U - Shield machine modified structure for strengthening construction of tunnel face in shield machine cabin - Google Patents
Shield machine modified structure for strengthening construction of tunnel face in shield machine cabin Download PDFInfo
- Publication number
- CN202381098U CN202381098U CN 201120552614 CN201120552614U CN202381098U CN 202381098 U CN202381098 U CN 202381098U CN 201120552614 CN201120552614 CN 201120552614 CN 201120552614 U CN201120552614 U CN 201120552614U CN 202381098 U CN202381098 U CN 202381098U
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- CN
- China
- Prior art keywords
- shield machine
- cabin
- grouting
- tunnel face
- steel pipe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a shield machine modified structure for the strengthening construction of a tunnel face in a shield machine cabin. The shield machine modified structure is characterized in that synchronous grouting pipelines are connected in mud cabin wall preformed holes of the shield machine; an advance grouting steel pipe is inserted into an advance grouting hole of the shield machine; and the advance grouting hole is lengthened, so that the front end of the advance grouting steel pipe can extend above the front tunnel face of the shield machine. By the shield machine modified structure, a strengthened wall serving as a tunnel face strengthening structure is constructed along the front tunnel face of the shield machine, so that the safety is improved, and operators can enter the shield machine cabin to carefully inspect wear conditions of cutting tools and replace the cutting tools.
Description
Technical field
The utility model relates to a kind of shield machine that is used for face strengthening construction in the shield machine cabin and improves structure.
Background technology
In China, the underground granite ubiquity in some areas, when adopting shield machine to carry out the tunneling shield construction, shield machine front end cutter very easily weares and teares, and it is frequent to change cutter.
For the replacing of shield machine front end cutter, need at first facies palmaris in the cabin of job site to be reinforced in the work progress, in the prior art, add intrinsic ground strengthening vertical for face in the cabin and press the processing dual mode with band.Adopting strengthening vertical stratum, ground to require is broader on construction ground location, comes into operation so that construction equipment is marched into the arena.Yet in the shield driving construction, shield machine provides condition can't for the ground strengthening vertical railroad crossing, river, high stored building group etc. sometimes.It is to get into the tool changing of opening the cabin in the cabin by operating personnel that band press to be handled, and under air pressure conditions, carries out operation, and personnel are short in the underdeck operation time, and air pressure runs off than soil pressure more easily, is with that to press off the cabin safety not high.
Change frequent situation for granite area shield machine cutter; Open the cabin inspection and change increasing of number of times and increased potential safety hazard greatly; Simultaneously, based on multiple factors such as economy and durations, existing ground strengthening vertical stratum method and band press off the cabin method all can not engineering demands.
The utility model content
The utility model is for avoiding above-mentioned existing in prior technology weak point; Provide a kind of shield machine that is used for face strengthening construction in the shield machine cabin to improve structure; So that can directly utilize shield machine along one reinforcing wall of construction on the face of shield machine the place ahead, thereby safe, construction environment economically and reasonably is provided for tool changing in the cabin.
The utility model adopts following technical scheme for the technical solution problem:
The characteristics of the shield machine of face strengthening construction improvement structure are in said shield machine soil bulkhead preformed hole, to connect the synchronous grouting pipeline in the utility model shield machine cabin; In said shield machine pre-grouting hole, insert the pre-grouting steel pipe; Said pre-grouting steel pipe can stretch into above the face of shield machine the place ahead the front end of said pre-grouting steel pipe for lengthening is provided with.
Compared with present technology, the utility model beneficial effect is embodied in:
The utility model improves shield machine, utilize shield machine along one reinforcing wall of construction on the face of shield machine the place ahead as face ruggedized construction, for tool changing in the cabin provides safety, construction environment economically and reasonably.
Description of drawings
Fig. 1 is the utility model structural representation;
Label among the figure: 1 shield machine; 2 pre-grouting steel pipes; 3 shield machines are hinged; 4 pre-grouting holes; 5 synchronous grouting pipelines; 6 native bulkhead preformed holes; 7 reinforcing walls.
The specific embodiment
Referring to Fig. 1, in the present embodiment in the shield machine cabin face ruggedized construction be in that one reinforcing wall of face setting 7 is as face ruggedized construction along shield machine the place ahead, reinforcing wall 7 is that thickness is that 0.1-0.2m, area are the cement mortar body of wall of 40-45m2.
The shield machine improvement structure that is used for facies palmaris strengthening construction in the shield machine cabin in the present embodiment is the native bulkhead preformed hole 6 connection synchronous grouting pipelines 5 at shield machine; In shield machine pre-grouting hole 4, insert pre-grouting steel pipe 2; Pre-grouting steel pipe 2 can stretch into above the face of shield machine the place ahead the front end of pre-grouting steel pipe 2 for lengthening is provided with.
In the present embodiment in the shield machine cabin characteristics of the job practices of face ruggedized construction be to carry out as follows:
1, be equipped with the grouting mortar, empty shield machine soil cabin, soil pressure remains under the zero situation and continues next-step operation in shield machine soil cabin; If shield machine soil cabin soil pressure has the trend of continuous rising, then must stop the operation of following steps.
2, synchronous grouting pipeline 5 is connected to shield machine soil bulkhead preformed hole 6, in shield machine soil cabin, injects mortar, fill with shield machine soil cabin and formation mortar body of wall at face place, shield machine the place ahead until mortar through synchronous grouting pipeline 5;
The batching of mortar is: cement 300-350kg, flyash 320kg, swell soil 200kg, sand 770kg, water 570kg; Need to keep the continuity of slip casting, the injection of 3～4 hours completion mortars; After slip casting is accomplished, need regularly rotate the unearthed device conveying worm on the shield machine, prevent that mortar from solidifying conveying worm;
3, the pre-grouting steel pipe 2 that will get ready is inserted in the shield machine pre-grouting hole 4, makes pre-grouting pipe 2 is stretched into above the face of shield machine the place ahead; Utilize the secondary grouting machine to inject cement slurries through pre-grouting steel pipe 2, treat that grouting pressure reaches setting value after, shrink shield machine hinged 3 shield machine retreated, form reinforcing wall 7.
Usually the grouting pressure setting value is 0.1-0.2MPa; Cement slurry proportioning by weight is: water: cement=0.8: 1.
4, when the mortar that injects and cement slurry reach the initial set state, empty mortar and cement slurry in the shield machine soil cabin, during the reinforcing wall 7 completion initial sets treating to form by mortar that injects and cement slurry, operating personnel's tool changing of can opening the cabin.
Claims (1)
1. a shield machine that is used for face strengthening construction in the shield machine cabin improves structure; It is characterized in that in said shield machine soil bulkhead preformed hole (6), connecting synchronous grouting pipeline (5); In said shield machine pre-grouting hole (4), insert pre-grouting steel pipe (2); Said pre-grouting steel pipe (2) can stretch into above the face of shield machine the place ahead the front end of said pre-grouting steel pipe (2) for lengthening is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120552614 CN202381098U (en) | 2011-12-26 | 2011-12-26 | Shield machine modified structure for strengthening construction of tunnel face in shield machine cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120552614 CN202381098U (en) | 2011-12-26 | 2011-12-26 | Shield machine modified structure for strengthening construction of tunnel face in shield machine cabin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381098U true CN202381098U (en) | 2012-08-15 |
Family
ID=46629611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120552614 Expired - Fee Related CN202381098U (en) | 2011-12-26 | 2011-12-26 | Shield machine modified structure for strengthening construction of tunnel face in shield machine cabin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381098U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425425A (en) * | 2011-12-26 | 2012-04-25 | 中铁四局集团有限公司 | Working face reinforcing structure in shield machine cabin as well as construction method and equipment thereof |
-
2011
- 2011-12-26 CN CN 201120552614 patent/CN202381098U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425425A (en) * | 2011-12-26 | 2012-04-25 | 中铁四局集团有限公司 | Working face reinforcing structure in shield machine cabin as well as construction method and equipment thereof |
| CN102425425B (en) * | 2011-12-26 | 2014-07-23 | 中铁四局集团有限公司 | Working face reinforcing structure in shield machine cabin as well as construction method and equipment thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20141226 |
|
| EXPY | Termination of patent right or utility model |