CN108868843A - A kind of anchor rod support method in tunnel - Google Patents
A kind of anchor rod support method in tunnel Download PDFInfo
- Publication number
- CN108868843A CN108868843A CN201810953752.8A CN201810953752A CN108868843A CN 108868843 A CN108868843 A CN 108868843A CN 201810953752 A CN201810953752 A CN 201810953752A CN 108868843 A CN108868843 A CN 108868843A
- Authority
- CN
- China
- Prior art keywords
- suspension roof
- roof support
- parts
- scheme
- drilling
- 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
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000725 suspension Substances 0.000 claims abstract description 22
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 16
- 230000008093 supporting effect Effects 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 8
- 238000004458 analytical method Methods 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 239000010438 granite Substances 0.000 claims description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052622 kaolinite Inorganic materials 0.000 claims description 6
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims description 5
- 239000004579 marble Substances 0.000 claims description 5
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 5
- 238000007569 slipcasting Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/021—Grouting with inorganic components, e.g. cement
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)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses the anchor rod support methods in a kind of tunnel, include the following steps：(1) advance geologic prediction is carried out using physical prospecting and probing, collects geologic data；(2) 3-dimensional digital Integrated Model is constructed according to the data that advance geologic prediction is collected；(3) it proposes preliminary suspension roof support scheme, and carries out analysis calculation with 3-dimensional digital Integrated Model, adjust preliminary suspension roof support scheme according to resulting in, determine final suspension roof support scheme；(4) suspension roof support construction is carried out according to suspension roof support scheme.The present invention is using advance geologic prediction and establishes 3-dimensional digital Integrated Model, can quickly determine supporting scheme and the required material of supporting, to save support cost, and uses the stronger mortar of stability, the stability after improving rockbolt installation.
Description
Technical field
The invention belongs to technical field of tunnel construction, and in particular to the anchor rod support method in a kind of tunnel.
Background technique
Suspension roof support is a ring important in supporting and protecting system of tunnel, and whether design parameters of bolt rationally directly affects construction
The structure safety problem in stage and operation stage.It is current to carry out Tunnel Rock Bolt design according to domestic vcehicular tunnel design specification
When, only using Grades of Surrounding Rock as emphasis Consideration, simple foundation Grades of Surrounding Rock provides the support form and supporting parameter of recommendation,
Tunneling boring takes homogenization parameter simultaneously, to be easy to ignore Rock Joints Surrounding feature when to different constructing tunnel supportings, is applied
Work engineering method and blasting parameter influence, and easily cause to waste or there are security risks, while being influenced by mortar, stablize after suspension roof support
Property is poor.
Summary of the invention
The technical problems to be solved by the invention are in view of the above shortcomings of the prior art, to provide the anchor in a kind of tunnel
Bar method for protecting support, it is ensured that the safety of supporting, while the cost of supporting can be saved.
The technical scheme adopted by the invention is that：A kind of anchor rod support method in tunnel, includes the following steps：
(1) advance geologic prediction is carried out using physical prospecting and probing, collects geologic data；
(2) 3-dimensional digital Integrated Model is constructed according to the data that advance geologic prediction is collected；
(3) it proposes preliminary suspension roof support scheme, and carries out analysis calculation with 3-dimensional digital Integrated Model, tied according to calculation
Fruit adjusts preliminary suspension roof support scheme, determines final suspension roof support scheme；
(4) suspension roof support construction is carried out according to suspension roof support scheme.
Preferably, the construction of suspension roof support described in step (4) is specially：
A, it first carries out putting survey using the full instrument that bores according to supporting scheme, and carries out mark for dowel hold；
B, it drills using using wet brill in mark；
C, preliminary flushing is carried out to drilling using drilling machine water flow after drilling, drilling rod is slowly extracted after cleaning, then utilize height
Pressure fan carries out borehole cleaning to drilling；
D, in being drilled after borehole cleaning with water lubrication, Grouting Pipe is inserted into bottom hole, is then log out 50-100mm；
E, mortar is injected, Grouting Pipe is slowly at the uniform velocity extracted with the injection of mortar, is immediately inserted into anchor pole after extraction, anchor pole
After insertion mortar will be filled up in drilling.
Preferably, grouting pressure control is in 2.5-5Mpa.
Preferably, the mortar includes following components by weight：100 parts of portland cement, 60 parts of flyash,
16 parts of concrete early strength agent, 38 parts of filler powder, 0.1 part of aluminium powder, 5 parts of swelling agent, 2 parts of defoaming agent and 70 parts of water.
It is bloodstone, kaolinite, big preferably, the filler powder includes bloodstone, kaolinite, marble and granite
Fibrous gypsum and the proportion of granite are 3:2:0.5:0.5.
The present invention is using advance geologic prediction and establishes 3-dimensional digital Integrated Model, can quickly determine supporting scheme and branch
Required material is protected, to save support cost, and uses the stronger mortar of stability, the stabilization after improving rockbolt installation
Property.
Specific embodiment
Below in conjunction with specific embodiment, invention is further described in detail.
Embodiment
Anchor rod support method in tunnel provided in this embodiment includes the following steps：
(1) advance geologic prediction is carried out using physical prospecting and probing, advance geologic prediction includes survey for the purpose of locating hydrogeological resources, hole Nei Shui
Literary geologic survey, record EXIT POINT position, water outlet dotted state and water yield, record tomography, joints development occurrence, record country rock,
Joint plane key mechanics parameter；
(2) 3-dimensional digital Integrated Model is constructed according to the parameter that advance geologic prediction is collected；
(3) it proposes preliminary suspension roof support scheme, and carries out analysis calculation with 3-dimensional digital Integrated Model, and pass through scene
Test, engineering investigation, quantitative analysis difference Bolting Parameters flowering structure stress deformation characteristic and adjoining rock stability safety coefficient, most
Suitable suspension roof support scheme and parameter are determined eventually；
(4) suspension roof support construction is carried out according to suspension roof support scheme and parameter：A, instrument is first bored using complete according to supporting scheme
It carries out putting survey, and carries out mark for dowel hold；B, it drills using using wet brill in mark；C, drilling machine water flow pair is utilized after drilling
Drilling carries out preliminary flushing, and drilling rod is slowly extracted after cleaning, then carries out borehole cleaning to drilling using high pressure blower；D, it is used after borehole cleaning
In water lubrication drilling, Grouting Pipe is inserted into bottom hole, is then log out 50-100mm；E, mortar is injected, silicon by weight is chosen
100 parts of acid salt cement, 60 parts of flyash and 38 parts of filler powder uniformly mix in mortar machine, and water 70 is added after mixing and carries out at the uniform velocity
It stirs, 16 parts of concrete early strength agent of addition, 0.1 part of aluminium powder, 5 parts of swelling agent and 2 parts of defoaming agent, are sufficiently stirred mixed in whipping process
It is sent into slip casting machine after even, slip casting machine, which controls pressure, starts slip casting in 2.5-5Mpa, and Grouting Pipe is with mortar during slip casting
Injection is slowly at the uniform velocity extracted, and is immediately inserted into anchor pole after extraction, will be filled up mortar in drilling after anchor pole insertion, is completed the peace of anchor pole
Dress.
In above-described embodiment, the filler powder includes bloodstone, kaolinite, marble and granite, bloodstone, kaolinite
The proportion of stone, marble and granite is 3:2:0.5:0.5.
The above is only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, any
The transformation and replacement carried out based on technical solution provided by the present invention and inventive concept should all be covered in protection model of the invention
In enclosing.
Claims (5)
1. the anchor rod support method in a kind of tunnel, it is characterised in that：Include the following steps：
(1) advance geologic prediction is carried out using physical prospecting and probing, collects geologic data；
(2) 3-dimensional digital Integrated Model is constructed according to the data that advance geologic prediction is collected；
(3) it proposes preliminary suspension roof support scheme, and carries out analysis calculation with 3-dimensional digital Integrated Model, adjusted according to resulting in
Whole preliminary suspension roof support scheme, determines final suspension roof support scheme；
(4) suspension roof support construction is carried out according to suspension roof support scheme.
2. the anchor rod support method in a kind of tunnel according to claim 1, it is characterised in that：Anchor described in step (4)
Bar supporting construction is specially：
A, it first carries out putting survey using the full instrument that bores according to supporting scheme, and carries out mark for dowel hold；
B, it drills using using wet brill in mark；
C, preliminary flushing is carried out to drilling using drilling machine water flow after drilling, drilling rod is slowly extracted after cleaning, then utilize high-pressure blast
Machine carries out borehole cleaning to drilling；
D, in being drilled after borehole cleaning with water lubrication, Grouting Pipe is inserted into bottom hole, is then log out 50-100mm；
E, mortar is injected, Grouting Pipe is slowly at the uniform velocity extracted with the injection of mortar, is immediately inserted into anchor pole after extraction, anchor pole insertion
Afterwards mortar will be filled up in drilling.
3. the anchor rod support method in a kind of tunnel according to claim 2, it is characterised in that：Inject the control of mortar pressure
In 2.5-5Mpa.
4. the anchor rod support method in a kind of tunnel according to claim 2, it is characterised in that：The mortar includes by weight
Measure the following components of part meter：100 parts of portland cement, 60 parts of flyash, 16 parts of concrete early strength agent, 38 parts of filler powder, aluminium powder
0.1 part, 5 parts of swelling agent, 2 parts of defoaming agent and 70 parts of water.
5. the anchor rod support method in a kind of tunnel according to claim 4, it is characterised in that：The filler powder includes red
Iron ore, kaolinite, marble and granite, bloodstone, kaolinite, marble and granite proportion be 3:2:0.5:0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810953752.8A CN108868843A (en) | 2018-08-21 | 2018-08-21 | A kind of anchor rod support method in tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810953752.8A CN108868843A (en) | 2018-08-21 | 2018-08-21 | A kind of anchor rod support method in tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108868843A true CN108868843A (en) | 2018-11-23 |
Family
ID=64320872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810953752.8A Pending CN108868843A (en) | 2018-08-21 | 2018-08-21 | A kind of anchor rod support method in tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108868843A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484285A (en) * | 2020-03-31 | 2020-08-04 | 中交隧道工程局有限公司 | Paste mortar for tunnel vault mortar anchor rod construction and grouting method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536250A (en) * | 2010-12-31 | 2012-07-04 | 中铁二局股份有限公司 | Construction method for tunnels with karst and gas simultaneously |
| CN106837352A (en) * | 2017-01-22 | 2017-06-13 | 中南大学 | Fault belt surrounding rock tunnel construction method |
| CN106837353A (en) * | 2017-01-22 | 2017-06-13 | 中南大学 | Filling karst tunnel construction treatment method |
| CN108005662A (en) * | 2017-12-08 | 2018-05-08 | 福州大学 | A kind of processing method of underground water seal cave depot bank area geology crushed zone |
| CN108166981A (en) * | 2017-12-31 | 2018-06-15 | 中铁十九局集团第二工程有限公司 | Tunnel soft rock large deformation section construction technology |
-
2018
- 2018-08-21 CN CN201810953752.8A patent/CN108868843A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536250A (en) * | 2010-12-31 | 2012-07-04 | 中铁二局股份有限公司 | Construction method for tunnels with karst and gas simultaneously |
| CN106837352A (en) * | 2017-01-22 | 2017-06-13 | 中南大学 | Fault belt surrounding rock tunnel construction method |
| CN106837353A (en) * | 2017-01-22 | 2017-06-13 | 中南大学 | Filling karst tunnel construction treatment method |
| CN108005662A (en) * | 2017-12-08 | 2018-05-08 | 福州大学 | A kind of processing method of underground water seal cave depot bank area geology crushed zone |
| CN108166981A (en) * | 2017-12-31 | 2018-06-15 | 中铁十九局集团第二工程有限公司 | Tunnel soft rock large deformation section construction technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484285A (en) * | 2020-03-31 | 2020-08-04 | 中交隧道工程局有限公司 | Paste mortar for tunnel vault mortar anchor rod construction and grouting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190520 Address after: 610000 No. 58 Tengfei Avenue, Qingyang District, Chengdu City, Sichuan Province Applicant after: Guo Cheng Group Co., Ltd Address before: 266071 Yanji Road 237, Shinan District, Qingdao City, Shandong Province Applicant before: East China Construction Engineering Group Limited |
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| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181123 |
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| RJ01 | Rejection of invention patent application after publication |