CN204060718U - Pre grouting from the surface reinforced roadway is through the Novel cloth pore structure of fault belt place country rock - Google Patents
Pre grouting from the surface reinforced roadway is through the Novel cloth pore structure of fault belt place country rock Download PDFInfo
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- CN204060718U CN204060718U CN201420459690.2U CN201420459690U CN204060718U CN 204060718 U CN204060718 U CN 204060718U CN 201420459690 U CN201420459690 U CN 201420459690U CN 204060718 U CN204060718 U CN 204060718U
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- slip casting
- grouting
- branched
- fault belt
- pore structure
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Abstract
The utility model provides a kind of pre grouting from the surface reinforced roadway through the Novel cloth pore structure of fault belt place country rock, comprise: slip casting straight hole, slip casting branched hole, pre grouting from the surface reinforced roadway is through the Novel cloth pore structure of fault belt place country rock, it is characterized in that: described slip casting straight hole is dug in fault belt, two slip casting branched holes are branched out in the slip casting region of slip casting straight hole lower end, arrange tunnel inside two slip casting branched holes, slip casting branched hole is arcuate structure.The utility model adopts oriented branch technology, strengthens range of grouting; Pre grouting from the surface, grouting pressure is large, and slip casting effect is good; Employing cement paste is reinforced, and price is relatively cheap, and after reinforcing, rock mass bulk strength is high; There is practicality and ease for operation widely.
Description
Technical field
The utility model relates to ground and construction of tunnel slip casting cloth hole technical field, is specially the Novel cloth pore structure of a kind of pre grouting from the surface reinforced roadway through fault belt place country rock.
Background technology
Along with the continuous increase of China's coal-mine mining depth, mining conditions constantly worsens.In the tunnelling of shaft production, run into fault belt etc. sometimes.Owing to being subject to geological structure force effect, be positioned at the rock mass soft broken at fault belt place, intensity is extremely low, and with flowing water.When tunnelling is through this position, normally pressure presents strong, and rock deformation is large, meet water softening, roadway support is extremely difficult, even if adopt high-strength support material, country rock also repeatedly unstability, supporting and protection structure has to repeatedly reprocess, and the normal safe that drastically influence mine is produced.
Summary of the invention
The technical problem that the utility model solves is the Novel cloth pore structure providing a kind of pre grouting from the surface reinforced roadway through fault belt place country rock, to solve the problem in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions: pre grouting from the surface reinforced roadway is through the Novel cloth pore structure of fault belt place country rock, comprise: slip casting straight hole, slip casting branched hole, slip casting straight hole is dug in fault belt, the slip casting overlying regions of slip casting straight hole lower end branches out two slip casting branched holes, arrange tunnel inside two slip casting branched holes, slip casting branched hole is arcuate structure.
Reinforcing scope 2-4H, below 1-3H above described tunnel; The left and right sides, tunnel grouting and reinforcing scope 2-4B.
Compared with public technology, there is following advantage in the utility model:
(1) the utility model adopts oriented branch technology, strengthens range of grouting;
(2) the utility model adopts pre grouting from the surface, and grouting pressure is large, and slip casting effect is good;
(3) the utility model adopts cement paste to reinforce, and price is relatively cheap, and after reinforcing, rock mass bulk strength is high;
(4) the utility model has practicality and ease for operation widely.
Accompanying drawing explanation
Fig. 1 is pre grouting from the surface passing fault zone of fracture roadway rock reinforce plan view of the present utility model.
Fig. 2 is that the I-I of Fig. 1 is to sectional drawing.
In figure: B-span length, H-head-room, 1-slip casting straight hole, 2-slip casting branched hole, 3-slip casting region, 4-fault belt.
Detailed description of the invention
Object is reached and effect is easy to understand in order to make technological means of the present utility model, creation characteristic, workflow, using method, below in conjunction with the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1-2, pre grouting from the surface reinforced roadway is through the Novel cloth pore structure of fault belt place country rock, comprise: slip casting straight hole 1, slip casting branched hole 2, slip casting straight hole 1 is dug in fault belt 4, two slip casting branched holes 2 are branched out in the slip casting region 3 of slip casting straight hole 1 lower end, arrange tunnel inside two slip casting branched holes 2, slip casting branched hole 2 is arcuate structure.
Embodiment 1
Pre grouting from the surface reinforced roadway, through the Novel cloth pore structure of fault belt place country rock, comprises the following steps: (1), along roadway direction, according to grout spreading range, calculates the pitch of holes of boring; (2) along design bore position, vertical slip casting straight hole is crept into, until lane teeming slurry branched hole original position; (3) slip casting " Y " type slip casting branched hole is crept into; (4) determine grout coordinate ratio, implement fault belt rock mass reinforcing slip casting.
Tunnel is provided with, reinforcing scope 3H, below 2H above road inside described slip casting branched hole; The left and right sides, tunnel grouting and reinforcing scope 3B.
The utility model, before underworkings does not tunnel, will carry out grouting and reinforcing through Soft and Cracked Rocks in the fault belt at place by pre grouting from the surface to tunnel, not only can reduce fault belt place fractured rate of rock mass, isolated water gushing channelway; And the mechanical characteristic of roadway surrounding rock can be improved, increase the self-bearing capacity of country rock, meet engineering demand, guarantee tunnel safety construction and permanent use.
The utility model is applicable to the rock mass reinforcing in long, large tunnel in the Mineral Engineering deep tunnel of fault belt or construction of tunnel.The utility model adopts pre-pouring grout technology simultaneously, is suitable for large pressure controllable slip casting, and core boring sampling checking consolidation effect.And adopting Novel cloth hole grouting mode, floor space reduces, and saves drilling effort.Overall the utility model slip casting effect is good, and the underground construction that can apply in complicated the abnormal geological structure is reinforced.
More than show and describe general principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and manual just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.Claimed scope of the present utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. pre grouting from the surface reinforced roadway is through the Novel cloth pore structure of fault belt place country rock, comprise: slip casting straight hole, slip casting branched hole, pre grouting from the surface reinforced roadway is through the Novel cloth pore structure of fault belt place country rock, it is characterized in that: described slip casting straight hole is dug in fault belt, two slip casting branched holes are branched out in the slip casting region of slip casting straight hole lower end, arrange tunnel inside two slip casting branched holes, slip casting branched hole is arcuate structure.
2. pre grouting from the surface reinforced roadway according to claim 1 is through the Novel cloth pore structure of fault belt place country rock, it is characterized in that: reinforcing scope 2-4H, below 1-3H above described tunnel; The left and right sides, tunnel grouting and reinforcing scope 2-4B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459690.2U CN204060718U (en) | 2014-08-13 | 2014-08-13 | Pre grouting from the surface reinforced roadway is through the Novel cloth pore structure of fault belt place country rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459690.2U CN204060718U (en) | 2014-08-13 | 2014-08-13 | Pre grouting from the surface reinforced roadway is through the Novel cloth pore structure of fault belt place country rock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204060718U true CN204060718U (en) | 2014-12-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420459690.2U Expired - Fee Related CN204060718U (en) | 2014-08-13 | 2014-08-13 | Pre grouting from the surface reinforced roadway is through the Novel cloth pore structure of fault belt place country rock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204060718U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014419A (en) * | 2016-07-11 | 2016-10-12 | 唐山开滦建设(集团)有限责任公司 | Multi-branch-pore ground pre-grouting and water plugging construction method |
| CN106545313A (en) * | 2016-11-04 | 2017-03-29 | 华北有色工程勘察院有限公司 | Grouting curtain hole structure and its construction technology |
-
2014
- 2014-08-13 CN CN201420459690.2U patent/CN204060718U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014419A (en) * | 2016-07-11 | 2016-10-12 | 唐山开滦建设(集团)有限责任公司 | Multi-branch-pore ground pre-grouting and water plugging construction method |
| CN106545313A (en) * | 2016-11-04 | 2017-03-29 | 华北有色工程勘察院有限公司 | Grouting curtain hole structure and its construction technology |
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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: 20141231 Termination date: 20150813 |
|
| EXPY | Termination of patent right or utility model |