CN109488340A - Advanced pouch pre-pouring grout passes rapidly through the construction method in high prominent down-hole goaf - Google Patents
Advanced pouch pre-pouring grout passes rapidly through the construction method in high prominent down-hole goaf Download PDFInfo
- Publication number
- CN109488340A CN109488340A CN201811649735.1A CN201811649735A CN109488340A CN 109488340 A CN109488340 A CN 109488340A CN 201811649735 A CN201811649735 A CN 201811649735A CN 109488340 A CN109488340 A CN 109488340A
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- China
- Prior art keywords
- pipe
- grouting
- pouch
- goaf
- construction method
- Prior art date
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 239000011440 grout Substances 0.000 title claims abstract description 16
- 238000009412 basement excavation Methods 0.000 claims abstract description 9
- 239000004568 cement Substances 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 16
- 238000007569 slipcasting Methods 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000011378 shotcrete Substances 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- 210000002966 serum Anatomy 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims description 3
- 239000002775 capsule Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 10
- 239000004567 concrete Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/005—Props; Chocks, e.g. made of flexible containers filled with backfilling material characterised by the material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/02—Non-telescopic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to the construction methods that a kind of advanced pouch pre-pouring grout passes rapidly through high prominent down-hole goaf, the pressure of grouting pump can be passed through, cement grout is injected into pouch by Grouting Pipe, can roadway excavation contours profiles at cylindric concrete column, the top plate and two of supporting and reinforced roadway helps country rock, one layer of sealing, stable carrying shell are formed digging country rock around tunnel in advance, simultaneously, lap segment can play the role of advance anchor bolt again, to reach increase rock mass from the steady time, the self-stable ability of excavation face surrounding rock body is improved, the purpose of the loose deformation in stratum is limited.
Description
Technical field
The present invention relates to the technical field that coal mine roadway excavates, in particular to a kind of advanced pouch pre-pouring grout passes rapidly through height
The construction method in prominent down-hole goaf.
Background technique
Cheng Qian is crossed to what coal resources were exploited, needs to be designed as the exploitation preparation tunnel of entire exploiting field service, under
In the work progress in one mining level exploitation preparation tunnel, the case where often encountering the goaf for passing through a mining level.
Due to goaf slump determination in bad order, slump Surrounding Rock Strength is low, excavates easily landslide, roof accident occurs, together
When height dash forward that gas bearing capacity in mine goaf is high, and gas density, gas pressure come and go, very unfavorable to constructing.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of advanced pouch pre-pouring grouts to pass rapidly through high prominent down-hole
The construction method in goaf.
The technical scheme is that a kind of advanced pouch pre-pouring grout passes rapidly through the construction in high prominent down-hole goaf
Method, comprising the following steps:
(1) path for excavating tunnel, section shape and size are determined；
(2) pipe canopy pipe makes: taking welded still pipe as Grouting Pipe, the tail end of the Grouting Pipe is processed into tip of a branch closing, described
Inlet pipe of the starting point connection caliber of Grouting Pipe less than Grouting Pipe, Grouting Pipe tail portion setting injected hole, the one of the inlet pipe
Side is provided with the exhaust pipe for being welded on Grouting Pipe side, using the cylindric pouch of air duct fabric production diameter 1m, one end of pouch
Stock inlet is set, and pouch is protruded into from stock inlet in the tail portion of the Grouting Pipe, and pouch, the capsule are also protruded into the tail portion of the exhaust pipe
Air in bag is discharged and is wrapped in Grouting Pipe；
(3) drill: along the excavation tunnel top drill pipe canopy pipe jack determined, pipe canopy pipe jack is excavating tunnel over top
It is evenly arranged；
(4) insertion tube canopy pipe: by the tail portion insertion tube canopy pipe jack for the pipe canopy pipe made, inlet pipe and exhaust pipe are stayed in outside
Face；
(5) slip casting: grouting equipment uses coal Pneumatic injection pump for mine, and the slurries of slip casting are the mixed serum of cement and waterglass,
Grouting pressure is 1-2MPa；
(6) tunnelling: preceding 2/3rds length of the Grouting Pipe in pipe canopy pipe jack is inserted into as driving section, rear one third
Length is lap segment, and the length of lap segment is not less than 1.5m, and driving section excavation is finished tunnel along given route and is excavated
Driving；
(7) roadway support: carrying out supporting for the tunnel tunneled in tunneling process, and supporting carries out again after using U29 gold bracket
Gunite；
(8) it circulation construction: repeats step (3)-step (7), until passing through goaf completely.
Preferably, in step (7) a metallic, grouting behind shaft or drift lining is carried out after carrying out gunite, is vertically bored to the side wall for excavating tunnel
Hole carries out slip casting.
Preferably, it when carrying out grouting behind shaft or drift lining, drills by row, long injected hole and short injected hole are set every arrangement.
Preferably, the Grouting Pipe uses DN40 welded still pipe, and the diameter of the pipe canopy pipe jack is not less than 55mm.
Preferably, the head setting screw thread and connecting valve of the exhaust pipe, the outside lateral bend in the tail portion of the exhaust pipe.
Preferably, the slurry outlet setting of the Grouting Pipe is 10mm, the slurry outlet in tail portion, the diameter of the slurry outlet
Quantity be no less than 5, the distance between slurry outlet described in every two be 200mm.
Preferably, the section for excavating tunnel is arch.
The beneficial effects of the present invention are:
Advanced pouch pre-pouring grout of the invention passes rapidly through the construction method in high prominent down-hole goaf, can pass through grouting pump
Cement grout is injected pouch by Grouting Pipe by pressure, can roadway excavation contours profiles at cylindric concrete column, supporting and
The top plate of reinforced roadway and two helps country rock, forms one layer of sealing, stable carrying shell digging country rock around tunnel in advance.
Meanwhile lap segment can play the role of advance anchor bolt again, thus reach increase rock mass from the steady time, improve and excavate
The self-stable ability of face surrounding rock body limits the purpose of the loose deformation in stratum.
The present invention solves the supporting problem that goaf is crossed in equipment road, the spilling of the toxic and harmful gas of close the goaf,
Guarantee construction safety.
The construction method is safe and reliable, and strong operability, speed of application is fast, can provide guarantee for the operation in the face of adopting.
Detailed description of the invention
Fig. 1 is construction sectional view of the invention；
Fig. 2 is pipe canopy pipe layout drawing；
Fig. 3 is the structural schematic diagram of pipe canopy pipe；
Fig. 4 is grouting behind shaft or drift lining schematic diagram；
A is long hole slip casting schematic diagram in Fig. 4；
B is short-bore slip casting schematic diagram in Fig. 4；
Fig. 5 is the observation curve table of one of survey station；
Fig. 6 is the observation curve table of another survey station；
In figure: 1. excavate tunnels, 2. goafs, 3. driving sections, 4. lap segments, 5. pipe canopy pipes, 51. Grouting Pipes, 52. inlet pipes,
53. exhaust pipe, 54. pouches, 6. long injected holes, 7. short injected holes.
Specific embodiment
A specific embodiment of the invention is referring to Fig. 1-4:
A kind of advanced pouch pre-pouring grout passes rapidly through the construction method in high prominent down-hole goaf, picture 1-4, including following step
It is rapid:
(1) path for excavating tunnel 1, section shape and size are determined, the section for excavating tunnel 1 is arch；
(2) pipe canopy pipe 5 makes: taking DN40 welded still pipe as Grouting Pipe 51, the diameter of 5 jack of pipe canopy pipe is not less than
55mm, the tail end of the Grouting Pipe 51 are processed into tip of a branch closing, and the starting point connection caliber of the Grouting Pipe 51 is less than Grouting Pipe
Injected hole is arranged in 51 inlet pipe 52,51 tail portion of Grouting Pipe, and the side of the inlet pipe 52, which is provided with, is welded on 51 side of Grouting Pipe
The exhaust pipe 53 in face, the head setting screw thread and connecting valve of the exhaust pipe 53, the outside lateral bending in tail portion of the exhaust pipe 53
Song, the slurry outlet setting of the Grouting Pipe 51 is in tail portion, and the diameter of the slurry outlet is 10mm, and the quantity of the slurry outlet is many
In 5, the distance between slurry outlet described in every two is 200mm, and the cylindric pouch 54 of diameter 1m is made of air duct fabric,
Stock inlet is arranged in one end of pouch 54, and pouch 54, the tail of the exhaust pipe 53 are protruded into from stock inlet in the tail portion of the Grouting Pipe 51
Portion also protrudes into pouch 54, and the air in the pouch 54 is discharged and is wrapped in Grouting Pipe 51；
(3) drill: along 1 top drill pipe canopy pipe of excavation tunnel, 5 jack determined, 5 jack of pipe canopy pipe is excavating 1 top of tunnel
Top is evenly arranged；
(4) insertion tube canopy pipe 5: by 5 jack of tail portion insertion tube canopy pipe for the pipe canopy pipe 5 made, inlet pipe 52 and exhaust pipe 53
It is left outside；
(5) slip casting: grouting equipment uses coal Pneumatic injection pump for mine, and the slurries of slip casting are the mixed serum of cement and waterglass,
Grouting pressure is 1-2MPa；
(6) tunnelling: preceding 2/3rds length of the Grouting Pipe 51 in 5 jack of pipe canopy pipe is inserted into as driving section 3, three points latter
One of length be lap segment 4, the length of lap segment 4 is not less than 1.5m, along given route will tunnel the excavation of section 3 finish tunnel into
Row excavates driving；
(7) roadway support: carrying out supporting for the tunnel tunneled in tunneling process, and supporting carries out again after using U29 gold bracket
Gunite carries out grouting behind shaft or drift lining after carrying out gunite, when carrying out grouting behind shaft or drift lining, drills by row, long injected hole 6 and short slip casting
Hole 7 is set every arrangement, carries out slip casting to the side wall vertical drilling for excavating tunnel 1；
(8) circulation construction: repeating step (3)-step (7), until passing through goaf 2 completely.
The own 15-15060 air way high position lane equipment in No. two exploiting fields Jing Jiwu of eight mines that my unit is constructed passes through goaf 2
Using construction method of the invention, goaf 2 is crossed within construction 30 days in the original plan, it is practical by using 54 slurry injection technique of pipe canopy pouch
It construction time only 10 days, saves for 2/3 time, while 200,000 yuan of the cost of labor moon can be saved, reduce maintenance cost about 1,620,000
Member.
In order to examine construction effect of the invention, 2 survey stations are established to tunnel across 2 sections of goaf excavating tunnel 1
The deformation on country rock surface carries out observation in 2 months, and the observation curve table of one of survey station is to see Fig. 5, the sight of another survey station
It surveys curve table and sees Fig. 6；It can be seen that the tunnel prop after constructing 40 days using construction method of the invention by Fig. 5,6
System has given full play to support action, preferably controls the country rock of equipment road goaf section.
Claims (7)
1. the construction method that a kind of advanced pouch pre-pouring grout passes rapidly through high prominent down-hole goaf, which is characterized in that including
Following steps:
(1) path for excavating tunnel, section shape and size are determined；
(2) pipe canopy pipe makes: taking welded still pipe as Grouting Pipe, the tail end of the Grouting Pipe is processed into tip of a branch closing, described
Inlet pipe of the starting point connection caliber of Grouting Pipe less than Grouting Pipe, Grouting Pipe tail portion setting injected hole, the one of the inlet pipe
Side is provided with the exhaust pipe for being welded on Grouting Pipe side, using the cylindric pouch of air duct fabric production diameter 1m, one end of pouch
Stock inlet is set, and pouch is protruded into from stock inlet in the tail portion of the Grouting Pipe, and pouch, the capsule are also protruded into the tail portion of the exhaust pipe
Air in bag is discharged and is wrapped in Grouting Pipe；
(3) drill: along the excavation tunnel top drill pipe canopy pipe jack determined, pipe canopy pipe jack is excavating tunnel over top
It is evenly arranged；
(4) insertion tube canopy pipe: by the tail portion insertion tube canopy pipe jack for the pipe canopy pipe made, inlet pipe and exhaust pipe are stayed in outside
Face；
(5) slip casting: grouting equipment uses coal Pneumatic injection pump for mine, and the slurries of slip casting are the mixed serum of cement and waterglass,
Grouting pressure is 1-2MPa；
(6) tunnelling: preceding 2/3rds length of the Grouting Pipe in pipe canopy pipe jack is inserted into as driving section, rear one third
Length is lap segment, and the length of lap segment is not less than 1.5m, and driving section excavation is finished tunnel along given route and is excavated
Driving；
(7) roadway support: carrying out supporting for the tunnel tunneled in tunneling process, and supporting carries out again after using U29 gold bracket
Gunite；
(8) it circulation construction: repeats step (3)-step (7), until passing through goaf completely.
2. advanced pouch pre-pouring grout according to claim 1 passes rapidly through the construction method in high prominent down-hole goaf,
It is characterized by: in step (7) a metallic, carry out grouting behind shaft or drift lining after carrying out gunite, to excavate the side wall vertical drilling in tunnel into
Row slip casting.
3. advanced pouch pre-pouring grout according to claim 2 passes rapidly through the construction method in high prominent down-hole goaf,
It is characterized by: drilling by row, long injected hole and short injected hole are set every arrangement when carrying out grouting behind shaft or drift lining.
4. advanced pouch pre-pouring grout according to claim 3 passes rapidly through the construction method in high prominent down-hole goaf,
It is characterized by: the Grouting Pipe uses DN40 welded still pipe, the diameter of the pipe canopy pipe jack is not less than 55mm.
5. advanced pouch pre-pouring grout according to claim 4 passes rapidly through the construction method in high prominent down-hole goaf,
It is characterized by: the head setting screw thread and connecting valve of the exhaust pipe, the outside lateral bend in the tail portion of the exhaust pipe.
6. advanced pouch pre-pouring grout according to claim 5 passes rapidly through the construction method in high prominent down-hole goaf,
It is characterized by: the slurry outlet setting of the Grouting Pipe, in tail portion, the diameter of the slurry outlet is 10mm, the number of the slurry outlet
Amount no less than 5, the distance between slurry outlet described in every two is 200mm.
7. advanced pouch pre-pouring grout according to claim 6 passes rapidly through the construction method in high prominent down-hole goaf,
It is characterized by: the section for excavating tunnel is arch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811649735.1A CN109488340A (en) | 2018-12-30 | 2018-12-30 | Advanced pouch pre-pouring grout passes rapidly through the construction method in high prominent down-hole goaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811649735.1A CN109488340A (en) | 2018-12-30 | 2018-12-30 | Advanced pouch pre-pouring grout passes rapidly through the construction method in high prominent down-hole goaf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109488340A true CN109488340A (en) | 2019-03-19 |
Family
ID=65713627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811649735.1A Pending CN109488340A (en) | 2018-12-30 | 2018-12-30 | Advanced pouch pre-pouring grout passes rapidly through the construction method in high prominent down-hole goaf |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109488340A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067573A (en) * | 2019-04-26 | 2019-07-30 | 西和县中宝矿业有限公司 | A kind of quick improvement and the construction method for passing through the crushed zone that caved in |
| CN114033453A (en) * | 2021-11-25 | 2022-02-11 | 西安科技大学 | Coal face goaf roof treatment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3808714A1 (en) * | 1988-03-16 | 1989-10-05 | Westhaus Karl Heinz Prof Dr In | Method of constructing a tunnel, in particular a traffic tunnel, and shield driving machine for carrying out the method |
| CN106149677A (en) * | 2015-04-16 | 2016-11-23 | 中铁二院工程集团有限责任公司 | High-pressure water-enriched goaf grouting reinforcement means |
| CN106988755A (en) * | 2017-05-10 | 2017-07-28 | 中铁五局集团第五工程有限责任公司 | A kind of tunnel portal weak surrounding rock section overlength pipe shed construction method |
| CN107524166A (en) * | 2017-08-31 | 2017-12-29 | 中交第四航务工程局有限公司 | A kind of grouting bag and application method |
| CN208040348U (en) * | 2018-04-04 | 2018-11-02 | 郑州鑫安矿山机械配件有限公司 | Slip casting bag pocket type hole packer |
-
2018
- 2018-12-30 CN CN201811649735.1A patent/CN109488340A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3808714A1 (en) * | 1988-03-16 | 1989-10-05 | Westhaus Karl Heinz Prof Dr In | Method of constructing a tunnel, in particular a traffic tunnel, and shield driving machine for carrying out the method |
| CN106149677A (en) * | 2015-04-16 | 2016-11-23 | 中铁二院工程集团有限责任公司 | High-pressure water-enriched goaf grouting reinforcement means |
| CN106988755A (en) * | 2017-05-10 | 2017-07-28 | 中铁五局集团第五工程有限责任公司 | A kind of tunnel portal weak surrounding rock section overlength pipe shed construction method |
| CN107524166A (en) * | 2017-08-31 | 2017-12-29 | 中交第四航务工程局有限公司 | A kind of grouting bag and application method |
| CN208040348U (en) * | 2018-04-04 | 2018-11-02 | 郑州鑫安矿山机械配件有限公司 | Slip casting bag pocket type hole packer |
Non-Patent Citations (1)
| Title |
|---|
| 卢海军: "管棚囊袋注浆超前支护技术在巷道过采空区中的应用", 《煤炭科学技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067573A (en) * | 2019-04-26 | 2019-07-30 | 西和县中宝矿业有限公司 | A kind of quick improvement and the construction method for passing through the crushed zone that caved in |
| CN114033453A (en) * | 2021-11-25 | 2022-02-11 | 西安科技大学 | Coal face goaf roof treatment method |
| CN114033453B (en) * | 2021-11-25 | 2023-05-30 | 西安科技大学 | Goaf roof treatment method for coal face |
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| PB01 | Publication | ||
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Application publication date: 20190319 |