CN203514310U - Surrounding rock of underground plant - Google Patents
Surrounding rock of underground plant Download PDFInfo
- Publication number
- CN203514310U CN203514310U CN201320661536.9U CN201320661536U CN203514310U CN 203514310 U CN203514310 U CN 203514310U CN 201320661536 U CN201320661536 U CN 201320661536U CN 203514310 U CN203514310 U CN 203514310U
- Authority
- CN
- China
- Prior art keywords
- country rock
- surrounding rock
- rock
- prestressed anchor
- wall
- 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
- 239000011435 rock Substances 0.000 title claims abstract description 77
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 239000004568 cement Substances 0.000 claims abstract description 4
- 230000002787 reinforcement Effects 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 239000011440 grout Substances 0.000 claims description 11
- 239000004567 concrete Substances 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 6
- 239000004570 mortar (masonry) Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 238000007596 consolidation process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
Images
Landscapes
- Piles And Underground Anchors (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses surrounding rock of an underground plant. The surrounding rock comprises a plurality of mortar anchor rods and a plurality of prestressed anchor cables. The mortar anchor rods and the prestressed anchor cables penetrate a surrounding rock wall to be inserted into a surrounding rock body, a plurality of grouting holes are formed in the surrounding rock body, and cement slurry is filled in the grouting holes; a reinforcing mesh is laid on the surrounding rock wall and is fixed onto the surrounding rock wall by the aid of reinforcing arch ribs, prestressed anchor rods and the prestressed anchor cables, and the reinforcing arch ribs are fixed onto the surrounding rock wall by the aid of the prestressed anchor rods and the prestressed anchor cables. The surrounding rock has the advantages that the integrity of the surrounding rock can be improved, the surrounding rock is firm and reliable in structure, deformation of the surrounding rock can be effectively prevented, and accordingly problems of cracking and dropping of coatings of spandrel positions of an existing underground plant with broken surrounding rock can be solved.
Description
Technical field
The utility model relates to a kind of underground power house country rock.
Background technology
Underground power house main building spandrel position is the most concentrated region of stress.Because factory building downstream abutment wall has the caverns such as bus tunnel and draft tube tunnel, for the more broken underground power house of country rock, often there is spray-up cracking and obscission in its spandrel position, downstream spray-up after being excavated to III, IV layer.This is because stress is concentrated, and due to being out of shape after rock crusher.Existing processing method is generally Prestressing anchor cable in country rock, but the more broken underground power house of country rock, and this processing method can not prevent well spandrel position spray-up cracking and come off.
Summary of the invention
Technical problem to be solved in the utility model is, not enough for prior art, and a kind of underground power house country rock is provided, and prevents surrouding rock deformation, thereby prevents the spandrel position spray-up cracking of the underground power house that country rock is more broken and come off.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of underground power house country rock, comprise many grouting rock bolts and Duo Gen prestress anchorage cable, it is inner that described grouting rock bolt and prestress anchorage cable all insert country rock through country rock wall, on country rock, offer a plurality of grout holes, in described grout hole, be perfused with cement paste; On described country rock wall, be equipped with steel mesh reinforcement, described steel mesh reinforcement is fixed on described country rock wall by reinforcing bar arch rib, prestressed anchor, prestress anchorage cable, and described reinforcing bar arch rib is fixed on described country rock wall by described prestressed anchor and prestress anchorage cable.
Pneumatically placed concrete on steel mesh reinforcement, described many grouting rock bolts are divided into some rows and are arranged in described country rock, and described many prestressed anchors are divided into some rows and are arranged in described country rock, and described prestressed anchor and described grouting rock bolt interval layout; On country rock between each row grouting rock bolt and the row prestressed anchor that is adjacent, all offer described grout hole, make surrounding rock structure tightr.
Compared with prior art, the beneficial effect that the utility model has is: the utility model has strengthened country rock globality, make surrounding rock structure fastening reliable, can effectively prevent surrouding rock deformation, thereby prevent the spandrel position spray-up cracking of the underground power house that country rock is more broken and come off.
Accompanying drawing explanation
Fig. 1 is the utility model one embodiment front view;
Fig. 2 is the utility model one embodiment sectional view.
The specific embodiment
As depicted in figs. 1 and 2, the utility model one embodiment comprises many mortar dowels 6, prestressed anchor 4 and Duo Gen prestress anchorage cable 5, it is inner that described grouting rock bolt 6, prestressed anchor 4 and prestress anchorage cable 5 all insert country rock through country rock wall 7, on country rock, offer two row's grout holes 1, in described grout hole 1, be perfused with cement paste; On described country rock wall, be equipped with steel mesh reinforcement 2, described steel mesh reinforcement 2 is fixed on described country rock wall 7 by reinforcing bar arch rib 3, prestressed anchor 4 and prestress anchorage cable 5, and described reinforcing bar arch rib 3 is fixed on described country rock wall 7 by described prestress anchorage cable 5 and prestressed anchor 4; Sprayed mortar on steel mesh reinforcement 2.
As shown in Figure 1, sprayed mortar on steel mesh reinforcement, described many grouting rock bolts 6 are divided into four rows and are arranged in described country rock, and described many prestressed anchors are divided into three rows and are arranged in described country rock, and described prestressed anchor 4 is arranged with described grouting rock bolt 6 intervals; On country rock between each row grouting rock bolt 6 and the row prestressed anchor 4 that is adjacent, all offer described grout hole 1.
The utility model Specific construction process is as follows:
(1) country rock is first carried out to consolidation grouting processing, arrange the grout hole of 2 row's spacing 2.4m, grout hole diameter is 56mm, hole depth 5m, and single hole once pours into, grouting pressure 0.5～0.8MPa;
(2) consolidation grouting hangs the processing of steel mesh reinforcement pneumatically placed concrete after completing, before carrying out shotcrete with mesh, need cut totally cracking and the spray-up flaking, steel mesh reinforcement adopts the bar reinforcement net of 200mm * 200mm, and the rebar sizes in steel mesh reinforcement is φ 25;
(3) 1 row 1500kN, spacing 4.8m, length is prestress anchorage cable, the 3 row Φ 32 of 25m, spacing 2.4m, tonnage 200kN, the prestressed anchor that length is 12m, 4 row Φ 32 spacing 2.4m, the grouting rock bolt of length 9m, at prestress anchorage cable, prestressed anchor location arrangements reinforcing bar arch rib, reinforcing bar arch rib is fixed on country rock wall by prestress anchorage cable and prestressed anchor.
Claims (3)
1. a underground power house country rock, comprise many grouting rock bolts (6) and many prestress anchorage cables (5), it is inner that described grouting rock bolt (6) and prestress anchorage cable (5) all insert country rock through country rock wall (7), it is characterized in that, on country rock wall, offer a plurality of grout holes (1), described grout hole is perfused with cement paste in (1); In described country rock, be fixed with many prestressed anchors (4); On described country rock wall (7), be equipped with steel mesh reinforcement (2), it is upper that described steel mesh reinforcement (2) is fixed on described country rock wall (7) by reinforcing bar arch rib (3), prestressed anchor (4), prestress anchorage cable (5), and described reinforcing bar arch rib (3) is fixed on described country rock wall (7) by described prestress anchorage cable (5) and prestressed anchor (4).
2. underground power house country rock according to claim 1, is characterized in that, described steel mesh reinforcement is sprayed with concrete on (2).
3. underground power house country rock according to claim 1 and 2, it is characterized in that, described many grouting rock bolts (6) are divided into some rows and are arranged in described country rock, described many prestressed anchors (4) are divided into some rows and are arranged in described country rock, and described prestressed anchor (4) is arranged with described grouting rock bolt (6) interval; On country rock between each row grouting rock bolt (6) and the row prestressed anchor (4) that is adjacent, all offer described grout hole (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320661536.9U CN203514310U (en) | 2013-10-25 | 2013-10-25 | Surrounding rock of underground plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320661536.9U CN203514310U (en) | 2013-10-25 | 2013-10-25 | Surrounding rock of underground plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203514310U true CN203514310U (en) | 2014-04-02 |
Family
ID=50373265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320661536.9U Expired - Lifetime CN203514310U (en) | 2013-10-25 | 2013-10-25 | Surrounding rock of underground plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203514310U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032749A (en) * | 2014-06-20 | 2014-09-10 | 中国水电顾问集团华东勘测设计研究院有限公司 | Excavation supporting method for foundations high in ground stress and easy to loose |
| CN105275486A (en) * | 2015-11-09 | 2016-01-27 | 中国矿业大学(北京) | Anchor pole and rope combined strutted structure and construction method thereof |
| CN106089261A (en) * | 2016-07-28 | 2016-11-09 | 中国电建集团成都勘测设计研究院有限公司 | The forward supporting construction of tunnel abutment wall and method for protecting support in steep dip thin layer country rock |
| CN107905805A (en) * | 2017-11-15 | 2018-04-13 | 中国电建集团华东勘测设计研究院有限公司 | One kind ensures that underground power house machine hole dividing pier excavates molding strengthening supporting method and underground power house machine hole dividing pier structure |
-
2013
- 2013-10-25 CN CN201320661536.9U patent/CN203514310U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032749A (en) * | 2014-06-20 | 2014-09-10 | 中国水电顾问集团华东勘测设计研究院有限公司 | Excavation supporting method for foundations high in ground stress and easy to loose |
| CN104032749B (en) * | 2014-06-20 | 2016-05-04 | 中国水电顾问集团华东勘测设计研究院有限公司 | A kind of high-ground stress, easy lax foundation excavation method for protecting support |
| CN105275486A (en) * | 2015-11-09 | 2016-01-27 | 中国矿业大学(北京) | Anchor pole and rope combined strutted structure and construction method thereof |
| CN105275486B (en) * | 2015-11-09 | 2017-12-22 | 中国矿业大学(北京) | A kind of anchor shaft anchor cable combined support structure and its construction method |
| CN106089261A (en) * | 2016-07-28 | 2016-11-09 | 中国电建集团成都勘测设计研究院有限公司 | The forward supporting construction of tunnel abutment wall and method for protecting support in steep dip thin layer country rock |
| CN107905805A (en) * | 2017-11-15 | 2018-04-13 | 中国电建集团华东勘测设计研究院有限公司 | One kind ensures that underground power house machine hole dividing pier excavates molding strengthening supporting method and underground power house machine hole dividing pier structure |
| CN107905805B (en) * | 2017-11-15 | 2024-04-26 | 中国电建集团华东勘测设计研究院有限公司 | Reinforced supporting method for guaranteeing excavation molding of machine pit partition piers of underground powerhouse and machine pit partition pier structure of underground powerhouse |
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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 |
Owner name: CHINA POWER GROUP ZHONGNAN INVESTIGATION DESIGN + Free format text: FORMER NAME: HYDROCHINA ZHONGNAN ENGINEERING CORPORATION |
|
| CP03 | Change of name, title or address |
Address after: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Patentee after: POWERCHINA ZHONGNAN ENGINEERING Corp.,Ltd. Address before: 410014, 9 camphor Road, Yuhua District, Hunan, Changsha Patentee before: HYDROCHINA ZHONGNAN ENGINEERING Corp. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
|
| CX01 | Expiry of patent term |