CN202954370U - Excavating protection structure of large unloading relaxation rock slope - Google Patents
Excavating protection structure of large unloading relaxation rock slope Download PDFInfo
- Publication number
- CN202954370U CN202954370U CN 201220688621 CN201220688621U CN202954370U CN 202954370 U CN202954370 U CN 202954370U CN 201220688621 CN201220688621 CN 201220688621 CN 201220688621 U CN201220688621 U CN 201220688621U CN 202954370 U CN202954370 U CN 202954370U
- Authority
- CN
- China
- Prior art keywords
- side slope
- lax
- scale
- excavation
- load
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The utility model discloses an excavating protection structure, particularly relates to an excavating protection structure of a large unloading relaxation rock slope, belongs to the technical field of civil engineering construction of the slope, and provides the excavating protection structure of the large unloading relaxation rock slope capable of effectively improving the integrity and the stability in excavation construction of the large unloading relaxation rock slope. The excavating protection structure comprises the excavated large unloading relaxation rock slope body, and also comprises a grouting concretion body; and the grouting concretion body is arranged at one side inside the excavated large unloading relaxation rock slope body near an excavating surface.
Description
Technical field
The utility model relates to a kind of excavation protection structure, especially relates to the excavation protection structure of the lax rock side slope of a kind of large-scale off-load, belongs to civil engineering side slope technical field.
Background technology
China belongs to man of many mountain countries, and the infrastructure work engineerings such as many water conservancy and hydropowers, railway, highway and mine, often in the high mountain gorge area, often relate to the excavation of rock side slope in the process of construction of these engineerings.Yet, near slope rock mass earth's surface is under geological structure and very long physics, chemistry and biological weathering Erosion effect, weak broken, the intensity often become is low, chance water is easily softening, and simultaneously, the inner also normal growth of side slope has the weak structural planes such as tomography, vein, relief joint.Therefore; during slope excavation, usually can cause quality originally further to occur deteriorated with regard to poor rock mass; while especially adopting the presplit blasting mode to carry out slope excavation; the gas that blast produces and earthquake sheet and the detrimental effects such as Rolling Stone that further cause; to make rock mass that to a certain degree loosening and cracking occur, may seriously undermine excavation face forming quality, affect the stability and security of excavation slope.Therefore in the slope excavation process, the slope body sliding accident of collapsing has been excavated or has not been excavated in normal appearance, causes casualties and property loss.In exploitation manufacturing process as Daye, hubei Province iron ore east excavating plant, due to long-term exploitation explosion, cause existing tomography in high slope to slide, formed huge potential gliding mass, the production safety in serious threat mining area.And for example, blasting vibration makes the bottom Muddy Bottoms lam of the Quaternary system accumulation horizon of Xing He power station six pipeline section pipe trench produce thixotroping, dilution, and shear strength reduces, and then brings out landslide induced.Therefore, in side slope pre split Blasting Excavation process, how to reduce damage and the disturbance of Blasting Excavation to rock mass, and then guarantee that globality and the stability of side slope are one of difficult problems of slope excavation technical field.
At present, the excavation of rock side slope mainly adopts step presplit blasting mode to be constructed, and after Presplitting Blasting Excavation completes, side slope is reinforced again, and there is following problem in this traditional slope excavation job practices:
(1) traditional side slope pre split blasting digging method will cause the further loosening of loose crushing rock mass, and the stability of side slope is reduced;
(2) traditional side slope pre split blasting digging method carries out the construction of the bank protection measures such as linked network, sprayed mortar, anchor pole after excavation finishes again, and because the supporting construction time is long, the non-support side slope is exposed for a long time, further causes the deteriorated of domatic rock mass;
(3) when slope rock mass is comparatively broken, the construction of blasting pore-forming of traditional side slope pre split blasting digging method is difficulty comparatively, easily falls to bore and bit freezing, and with the pipe bit hole, cost is high in employing;
(4) when slope rock mass is comparatively broken, traditional side slope pre split blasting digging method easily causes overbreak-underbreak, and domatic forming quality is bad, even needs to carry out after-treatment, gets half the result with twice the effort;
(5) when slope rock mass is comparatively broken, the anchor pole after domatic excavation or cable bolting pore-forming are also more difficult.
The utility model content
Technical problem to be solved in the utility model is: a kind of excavation protection structure that can effectively improve the lax rock side slope of large-scale off-load of the globality of the lax rock side slope of large-scale off-load in excavation construction and stability is provided.
For solving the problems of the technologies described above adopted technical scheme, be: the excavation protection structure of the lax rock side slope of a kind of large-scale off-load; comprise the lax rock side slope body of the large-scale off-load of having excavated; also comprise the cement-grouting consolidation body, it is intrinsic near excavation face one side that described cement-grouting consolidation body is positioned at the lax rock side slope of the described large-scale off-load of having excavated.
Further, described cement-grouting consolidation body is the concretionary free shape induration of diffusion after pouring in the lax rock side slope body of described large-scale off-load by slurries before described slope excavation.
Further, also comprise sealer and anchor pole, described sealer is cemented on the surface of the lax rock side slope body of described large-scale off-load by described anchor pole.
Further, described sealer is that linked network is sprayed the layer of concrete formed.
The beneficial effects of the utility model are: by close excavation face one side in the lax rock side slope body of the described large-scale off-load completed at excavation, insert described cement-grouting consolidation body.Because described cement-grouting consolidation physical efficiency effectively is consolidated into an integral body by the lax rock side slope body of described large-scale off-load, the lax side slope body of described large-scale off-load is firmly combined, like this, when the Presplitting Blasting Excavation construction of carrying out postorder, just can effectively reduce the further loosening of loose crushing rock mass that explosion production causes, reach excavating part and will excavating globality and the stability of part in excavation construction of the lax rock side slope body of the described large-scale off-load of effective improvement.
The accompanying drawing explanation
The structural representation of excavation protection structure in digging process that Fig. 1 is the lax rock side slope of a kind of large-scale off-load of the utility model;
Structural representation after the excavation protection structural excavation that Fig. 2 is the lax rock side slope of a kind of large-scale off-load of the utility model completes.
In figure, be labeled as: large-scale off-load relax rock side slope body 1, cement-grouting consolidation body 2, excavation face 3, sealer 4, anchor pole 5.
The specific embodiment
A kind of excavation protection structure that can effectively improve the lax rock side slope of large-scale off-load of the globality of the lax rock side slope of large-scale off-load in excavation construction and stability that is as shown in Figure 1 and Figure 2 that the utility model provides.Described excavation protection structure comprises the lax rock side slope body 1 of the large-scale off-load of having excavated, and also comprises cement-grouting consolidation body 2, and described cement-grouting consolidation body 2 is positioned at close excavation face 3 one sides of the lax rock side slope body 1 of described large-scale off-load excavated.Above-mentioned interior near excavation face 3 one sides by the lax rock side slope body 1 of the described large-scale off-load completed at excavation, insert described cement-grouting consolidation body 2.Because described cement-grouting consolidation body 2 can effectively be consolidated into an integral body by the lax rock side slope body 1 of described large-scale off-load, the lax side slope body 1 of described large-scale off-load is firmly combined, like this, when the Presplitting Blasting Excavation construction of carrying out postorder, just can effectively reduce the further loosening of loose crushing rock mass that explosion production causes, reach excavating part and will excavating globality and the stability of part in excavation construction of the lax rock side slope body 1 of the described large-scale off-load of effective improvement.
In above-mentioned embodiment; in order to submit the protective value of described excavation protection structure to; described cement-grouting consolidation body 2 is preferably before lax rock side slope body 1 excavation of described large-scale off-load, by slurries, pours into the lax concretionary free shape induration of the interior rear diffusion of rock side slope body 1 of described large-scale off-load.
Further; stability and globality for the lax rock side slope body 1 of described large-scale off-load after protecting whole excavation to complete; described excavation protection structure also comprises sealer 4 and anchor pole 5, and described sealer 4 is cemented on the surface of the lax rock side slope body 1 of described large-scale off-load by described anchor pole 5.And, in order to reduce production costs, to enhance productivity, described sealer 4 adopts linked network to spray the layer of concrete formed.
Claims (4)
1. the excavation of the lax rock side slope of large-scale off-load is protected structure; comprise the lax rock side slope body (1) of the large-scale off-load of having excavated; it is characterized in that: also comprise cement-grouting consolidation body (2), described cement-grouting consolidation body (2) is positioned at close excavation face (3) one sides of the lax rock side slope body (1) of described large-scale off-load excavated.
2. the excavation of the lax rock side slope of a kind of large-scale off-load according to claim 1 is protected structure; it is characterized in that: described cement-grouting consolidation body (2) is before lax rock side slope body (1) excavation of described large-scale off-load, by slurries, pours into the concretionary free shape induration of rear diffusion in the lax rock side slope body (1) of described large-scale off-load.
3. the excavation of the lax rock side slope of a kind of large-scale off-load according to claim 1 is protected structure; it is characterized in that: also comprise sealer (4) and anchor pole (5), described sealer (4) is cemented on the surface of the lax rock side slope body (1) of described large-scale off-load by described anchor pole (5).
4. the excavation protection structure of the lax rock side slope of a kind of large-scale off-load according to claim 3, is characterized in that: the layer of concrete that described sealer (4) forms for the linked network injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688621 CN202954370U (en) | 2012-12-13 | 2012-12-13 | Excavating protection structure of large unloading relaxation rock slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688621 CN202954370U (en) | 2012-12-13 | 2012-12-13 | Excavating protection structure of large unloading relaxation rock slope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202954370U true CN202954370U (en) | 2013-05-29 |
Family
ID=48459949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220688621 Expired - Lifetime CN202954370U (en) | 2012-12-13 | 2012-12-13 | Excavating protection structure of large unloading relaxation rock slope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202954370U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755716A (en) * | 2018-07-03 | 2018-11-06 | 东北大学 | A kind of integrated protection administering method of aqueous eugeogenous rock matter bedding rock sloper |
| CN109736335A (en) * | 2019-02-27 | 2019-05-10 | 长江勘测规划设计研究有限责任公司 | A system prevention structure and method for ultra-high steep rock slope |
-
2012
- 2012-12-13 CN CN 201220688621 patent/CN202954370U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755716A (en) * | 2018-07-03 | 2018-11-06 | 东北大学 | A kind of integrated protection administering method of aqueous eugeogenous rock matter bedding rock sloper |
| CN109736335A (en) * | 2019-02-27 | 2019-05-10 | 长江勘测规划设计研究有限责任公司 | A system prevention structure and method for ultra-high steep rock slope |
| CN109736335B (en) * | 2019-02-27 | 2023-12-12 | 长江勘测规划设计研究有限责任公司 | Control structure and method for ultra-high steep rock slope system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Green coal mining technique integrating mining-dressing-gas draining-backfilling-mining | |
| CN102979103A (en) | Step type excavating method for large unloading loose rocky side slope | |
| CN102493822B (en) | Method for performing curtain grouting construction on tunnel by water rich fault influence zone | |
| CN103089275B (en) | Control method of surrounding rocks in water-rich very-broken surrounding rock tunnel collapse sections | |
| CN102493821B (en) | A Supporting Method for High Stress Roadway Coal and Rock Mass | |
| CN104074529B (en) | A kind of cave continuous bivalve, lane, deep reinforcement means | |
| CN103899329B (en) | A kind of administering method of large deformation breaking surrounding rock tunnel | |
| CN203961994U (en) | Under balancing earth-pressure shielding machine, wear the concealed tunneling structure of having runed shield tunnel | |
| CN102900460A (en) | Method for performing through-going seam cutting, pressure relief, permeability enhancement and quick tunneling on soft and high-outburst coal seam | |
| CN104790980A (en) | Method for treating karst caves in tunnel construction | |
| CN108756894A (en) | Tunnel micro- three step top Core Soil construction | |
| CN103362117A (en) | Full-section grouting method for grouting section | |
| CN102155234A (en) | Excavation construction method for unsymmetrical small-space tunnel | |
| CN102261247B (en) | Secondary coal-mining method for reversely filling paste in stripes | |
| CN104453903A (en) | Water-preserved mining method of close-distance coal seam group | |
| CN105114098A (en) | Method for treating unfavorable geological tunnel section of diversion tunnel and large-diameter diversion tunnel structure | |
| CN103291312B (en) | The shield machine of three-dimensional slip casting can be realized | |
| CN103573280A (en) | Method for supporting porous ooze invasion compound roof roadway | |
| CN107881995A (en) | Underground workshop palisades crane beam excavating construction method under unfavorable geological condition | |
| Zhang et al. | Dam foundation excavation techniques in China: a review | |
| CN204457810U (en) | The two strong housing support system of soft-rock tunnel available buffer gradual change type | |
| CN104141500A (en) | Hardened sand gravel stratum cavern construction method | |
| CN202954370U (en) | Excavating protection structure of large unloading relaxation rock slope | |
| CN203145956U (en) | Control tunnel rock explosion structure | |
| CN110486049A (en) | A kind of rich water sandstone tunnel passing fault crushed zone comprehensive processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: The North Qingyang District of Chengdu City, Sichuan Province, No. 610072 Patentee after: HYDROCHINA CHENGDU ENGINEERING Corp. Address before: The North Qingyang District of Chengdu City, Sichuan Province, No. 610072 Patentee before: POWERCHINA Chengdu Engineering Corporation Limited |
|
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER GROUP CHENGDU INVESTIGATION DESIGN + R Free format text: FORMER NAME: CHENGDU HYDROELECTRIC INVESTIGATION + DESIGN INSTITUTE OF SPC |
|
| CP01 | Change in the name or title of a patent holder |
Address after: The North Qingyang District of Chengdu City, Sichuan Province, No. 610072 Patentee after: POWERCHINA Chengdu Engineering Co.,Ltd. Address before: The North Qingyang District of Chengdu City, Sichuan Province, No. 610072 Patentee before: HYDROCHINA CHENGDU ENGINEERING Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130529 |