CN108798678B - Wear tunnel freezing hole construction technique - Google Patents
Wear tunnel freezing hole construction technique Download PDFInfo
- Publication number
- CN108798678B CN108798678B CN201810537485.6A CN201810537485A CN108798678B CN 108798678 B CN108798678 B CN 108798678B CN 201810537485 A CN201810537485 A CN 201810537485A CN 108798678 B CN108798678 B CN 108798678B
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- hole
- cement
- coring
- bit
- 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.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 230000008014 freezing Effects 0.000 title claims abstract description 20
- 238000007710 freezing Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 239000004568 cement Substances 0.000 claims abstract description 17
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims abstract description 8
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims abstract description 5
- 239000000284 extract Substances 0.000 claims abstract description 4
- 239000004575 stone Substances 0.000 claims abstract description 4
- 230000008023 solidification Effects 0.000 claims abstract description 3
- 238000007711 solidification Methods 0.000 claims abstract description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims 1
- 238000007596 consolidation process Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to one kind to wear tunnel freezing hole construction technique.Include the following steps: 1), first to be drilled downwards with drill bit from ground, until in back；2) drill bit, underlying steel pipe, until drilling depth, are extracted；3), the steel pipe is fixed with backfilling cement slurries in drill-hole annulus outside steel pipe；4), coring bit is goed deep into the steel pipe, punches back, occurs coring hole on back, extract coring bit afterwards；5) stone, sand and cement, are first poured into the steel pipe, and coring hole is blocked；6), with cement+waterglass complex, cement-grouting consolidation fills steel tube inner hole, after the solidification of cement+waterglass complex, so that it may bore normal construction freezing hole.
Description
Technical field
The present invention relates to a kind of freezing hole construction technique, in particular to one kind wears tunnel freezing hole construction technique.
Background technique
When the inclined shaft freezing borehole wall administers construction, the mode that curtain freezes can be used, since shaft construction is long in time limit, segmentation is frozen
Knot is not only to have can guarantee shaft construction safety, but also can reduce construction cost.It is not ganged up mutually between each section to guarantee to be lauched on pit shaft
It need to be freezed using end socket hole.End socket hole between each section positioned at drift section need to penetrate the borehole wall and deeply to without water base rock.Construction
In the process, since tunnel top is continuous layer of sand, it is rich in water, when penetrating empty section in tunnel tunnel Wai Shui may occur for drilling
Sand boil enters in tunnel, causes surface collapse, drilling equipment damage even casualties, while the borehole wall caused by sand is gushed because of water burst in tunnel
Bigger destruction.So needing to carry out specially treated to end socket hole before construction penetrates tunnel end socket hole.
Summary of the invention
The shortcomings that in order to overcome the prior art, the present invention provide one kind and wear tunnel freezing hole construction technique.Its method is simple,
It can ensure that tunnel wears freezing hole and will not gush the secondary destruction of the borehole wall caused by sand because of water burst, while also can guarantee that freezing hole is normally applied
Work.
The technical scheme adopted by the invention to solve the technical problem is that: include the following steps: 1), first to use drill bit from ground
Drilling downwards, until going deep into back；2) drill bit, underlying steel pipe, until drilling depth, are extracted；3), outside steel pipe with drilling
The steel pipe is fixed in backfilling cement slurries in annular space；4), coring bit is goed deep into the steel pipe, is beaten
Back is worn, occurs coring hole on back, extracts coring bit afterwards；5), first poured into the steel pipe stone and
Sand blocks coring hole；6), with cement+waterglass complex, cement-grouting consolidation fills steel tube inner hole, to cement+water
After the complex solidification of glass, so that it may normal drilling freezing hole.
It is smaller that borehole wall area is destroyed in end socket hole of the present invention, and end socket hole freezing pipe surrounding grout filling is closely knit, secured, reaches
End socket hole construction requirement has been arrived, tunnel has thoroughly been solved and wears freezing hole because water burst gushes the secondary destruction of the borehole wall and normal construction caused by sand
The spillage problem of freezing hole.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is schematic structural view of the invention.
Specific embodiment
The present invention includes the following steps: 1), first to drill 1 downwards from ground with Φ 245mm drill bit, until 80 in back 4
~100mm；2) drill bit, is extracted, it is underlyingSteel pipe 3, until drilling depth；3), outer with drilling in steel pipe 3
The steel pipe 3 is fixed in backfilling cement slurries in annular space；4), that the coring bit of Φ 190mm is deeply described
In steel pipe 3, back 4 is punched, occurs coring hole on back 4, extracts coring bit afterwards；5), in the steel pipe 3
The mix material of stone and cement is first poured into, material is leaked from coring hole to tunnel 7, forms the material heap 6 of taper, material heap
6 fastly close to coring hole when, stop attal；6), continue to fill by the cement+waterglass complex of steel pipe 3 again, until
More than top plate 4 more than 10m, i.e. Process of Leaking Stoppage terminates.In Process of Leaking Stoppage, various additives are added in cement slurry, make its density,
Viscosity, setting time and intensity meet leak stopping requirement, form cement plug and carry out leak stopping.Solidify to cement+waterglass complex
Afterwards, so that it may normal construction freezing hole.
Claims (4)
1. one kind wears tunnel freezing hole construction technique, it is characterised in that: include the following steps: 1), first with drill bit from ground downwards
It drills (1), until in back (4)；2) drill bit, underlying steel pipe (3), until drilling depth, are extracted；3), steel pipe (3) outside with brill
The steel pipe (3) is fixed in backfilling cement slurries in hole (1) annular space；4), coring bit is goed deep into the steel
It manages in (3), punches back (4), back coring hole occurs on (4), extracts coring bit afterwards；5), in the steel
Stone, sand and cement are first poured into pipe (3), until close to coring hole；6), with cement+waterglass complex, continue in steel pipe
(3) steel pipe is filled in, until charges are more than back (4) 10m, after the solidification of cement+waterglass complex, just
It can be with normal construction freezing hole.
2. according to claim 1 wear tunnel freezing hole construction technique, it is characterised in that: the bit diameter of the step 1)
For Φ 245mm.
3. according to claim 1 wear tunnel freezing hole construction technique, it is characterised in that: the steel pipe (3) of the step 2)
Diameter isWith a thickness of 6mm.
4. according to claim 1 wear tunnel freezing hole construction technique, it is characterised in that: the coring bit of the step 4)
Diameter is Φ 190mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810537485.6A CN108798678B (en) | 2018-05-30 | 2018-05-30 | Wear tunnel freezing hole construction technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810537485.6A CN108798678B (en) | 2018-05-30 | 2018-05-30 | Wear tunnel freezing hole construction technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108798678A CN108798678A (en) | 2018-11-13 |
| CN108798678B true CN108798678B (en) | 2019-11-26 |
Family
ID=64089237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810537485.6A Active CN108798678B (en) | 2018-05-30 | 2018-05-30 | Wear tunnel freezing hole construction technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108798678B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727505B (en) * | 2021-01-29 | 2023-05-23 | 金川集团股份有限公司 | Treatment method for mine drilling through abandoned roadway |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182463B (en) * | 2011-04-12 | 2013-01-16 | 中煤邯郸特殊凿井有限公司 | Inclined shaft freezing heat insulation method |
| CN102758631A (en) * | 2012-08-02 | 2012-10-31 | 兖矿集团有限公司 | Freezing method of frozen wall of inclined shaft |
| CN104453910B (en) * | 2013-09-22 | 2016-08-17 | 北京中煤矿山工程有限公司 | Freezing pipe device under a kind of tiltedly freezing hole |
| CN105888672B (en) * | 2014-09-02 | 2018-07-27 | 北京中煤矿山工程有限公司 | Freeze pipe device under a kind of oblique freezing hole external clamping |
| CN204691772U (en) * | 2015-05-11 | 2015-10-07 | 中煤邯郸特殊凿井有限公司 | inclined shaft freezing loop |
| CN105236867B (en) * | 2015-09-28 | 2018-04-20 | 中煤特殊凿井有限责任公司 | Freezing pipe filling cement mortar and freezing pipe filling process |
-
2018
- 2018-05-30 CN CN201810537485.6A patent/CN108798678B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108798678A (en) | 2018-11-13 |
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