CN111455993A - Grouting construction device and method for anchor cable of composite marble stratum - Google Patents
Grouting construction device and method for anchor cable of composite marble stratum Download PDFInfo
- Publication number
- CN111455993A CN111455993A CN202010260704.8A CN202010260704A CN111455993A CN 111455993 A CN111455993 A CN 111455993A CN 202010260704 A CN202010260704 A CN 202010260704A CN 111455993 A CN111455993 A CN 111455993A
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- Prior art keywords
- grouting
- stratum
- anchor cable
- marble
- connecting device
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 239000004579 marble Substances 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 14
- 238000007596 consolidation process Methods 0.000 claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 11
- 239000011398 Portland cement Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004568 cement Substances 0.000 claims description 14
- 239000011440 grout Substances 0.000 claims description 14
- 238000007569 slipcasting Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000008719 thickening Effects 0.000 claims description 2
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- 238000012797 qualification Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides a composite marble stratum anchor cable grouting construction device and a construction method, and relates to the technical field of grouting. The grouting construction device for the anchor cable in the compound marble stratum and the construction method comprise a connecting device, wherein a spring chuck device is arranged on the edge, close to the bottom, of the outer surface of one side of the connecting device, the outer surface of the connecting device is provided with threads on the upper half portion, the threads on the outer surface of the connecting device are provided with threads, S1 and grouting slurry are made of Sika Plast composite expanding agent mixed with 1% of ordinary portland cement, and consolidation grouting is made of water glass mixed with 2% of ordinary portland cement and used for improving the consolidation grouting effect. According to the grouting construction device and the grouting construction method for the anchor cables in the complex marble stratum, the self-made joints are adopted, the time for installing the joints can be saved by 0.5h for each anchor cable, the grouting qualification rate can be guaranteed by dynamically controlling grouting technological parameters, grouting can be saved by 0.05m3 for each anchor cable, and grouting treatment can be better performed in use.
Description
Technical Field
The invention relates to the technical field of grouting, in particular to a grouting construction device and a grouting construction method for an anchor cable of a compound marble stratum.
Background
The existing grouting process mainly realizes the quality assurance of grouting by controlling the grout composition, grouting pressure, water-cement ratio and the like, parameters are different under different geological conditions and acceptance requirements, and a grouting pipe is generally connected with a pressure-bearing quick connector.
Disclosure of Invention
The invention aims to provide a grouting construction device and a grouting construction method for an anchor cable in a compound marble stratum, which solve the problems in the background art.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a compound reason stone stratum anchor rope slip casting construction equipment, includes connecting device, one side surface of connecting device is close to bottom edge and is provided with spring chuck device, connecting device's surface is located the first half and has seted up the screw thread, and connecting device's surface thread bush is equipped with the screw thread.
Further, the method for grouting construction of the anchor cable in the compound marble stratum comprises the following steps:
s1, grouting slurry is made of Sika Plast composite expanding agent mixed with 1% of ordinary portland cement, and consolidation grouting is made of ordinary portland cement mixed with 2% of water glass and used for improving the consolidation grouting effect.
S2, ensuring the grouting effect, determining 3 groups of water cement ratios by combining the actual geological conditions of the field, wherein the grouting water cement ratio cannot exceed 0.4: 0.3,0.33,0.4.
S3, under the condition of a compound marble stratum, the anchoring section mainly comprises sandstone and siltstone, and slurry with the water-cement ratio of 0.4 is selected for initial grouting.
S4, when the grouting amount of the anchor section in the anchor cable exceeds 3 times of the design amount, carrying out consolidation grouting measures, adopting measures of flow limiting (20L/min) and pressure limiting (less than or equal to 0.2 MPa) in the consolidation grouting process, controlling 400L of the grout to be solidified, and after the grout is solidified for 30min, then drilling and grouting again, thereby effectively ensuring the grouting quality.
And S5, post-grouting is performed 8-10h after the first grouting, and the grouting construction process can enhance the bonding effect of the grout of the anchoring section and ensure the grouting quality.
And further comprising the step of thickening the slurry concentration to 1 level when the injection rate is more than 30L/min according to the operation step in S3, so that the slurry can be ensured to be full and the grouting amount can be reduced.
Further, the post-grouting will be performed according to the operation in S5 with a slurry water-cement ratio of 0.4.
The invention provides a composite marble stratum anchor cable grouting construction device and a construction method. The method has the following beneficial effects:
according to the grouting construction device and the grouting construction method for the anchor cables in the complex marble stratum, the self-made joints are adopted, the time for installing the joints can be saved by 0.5h for each anchor cable, the grouting qualification rate can be guaranteed by dynamically controlling grouting technological parameters, grouting can be saved by 0.05m3 for each anchor cable, and grouting treatment can be better performed in use.
Drawings
FIG. 1 is a top view of the composite marble stratum anchor cable grouting construction device of the invention;
fig. 2 is a front view of the composite marble stratum anchor cable grouting construction device.
In the figure: 1. a connecting device; 2. threading; 3. a spring clip device.
Detailed Description
The invention will be further illustrated with reference to the following examples and drawings:
referring to FIGS. 1-2: the utility model provides a compound reason stone stratum anchor rope slip casting construction equipment, includes connecting device 1, one side surface of connecting device 1 is close to bottom edge and is provided with spring chuck device 3, connecting device 1's surface is located first half set up screw thread, and connecting device 1's surface thread bush is equipped with screw thread 2, and slip casting union coupling comprises two parts, and partly is connecting device 1, and the second part is spring chuck device 3, and wherein first half of connecting device 1 is the screw thread 2 of diameter 32mm and connects, with slip casting machine output slip casting union coupling, and the opposite side is external diameter 10mm, and the thin steel pipe of wall thickness 2mm, spring chuck device 3 main function block the anchor rope slip casting pipe, loosen calliper, can remove the slip casting pipe.
A grouting construction method for an anchor cable in a compound marble stratum comprises the following steps:
s1, grouting slurry is made of 1% Sika Plast composite expanding agent doped with ordinary Portland cement, 2% water glass doped with ordinary Portland cement is selected for consolidation grouting to improve consolidation grouting effects, grouting treatment can be better performed by adopting 1% Sika Plast composite expanding agent doped with ordinary Portland cement, and when the grouting is solidified, 2% water glass needs to be doped with ordinary Portland cement to better improve consolidation grouting effects.
S2, ensuring the grouting effect, determining 3 groups of water cement ratios by combining the actual geological conditions of the field, wherein the grouting water cement ratio cannot exceed 0.4: 0.3, 0.33 and 0.4, once the water-cement ratio of grouting exceeds 0.4, the grouting efficiency is greatly reduced in use, and the grouting cannot be better used.
S3, under the condition of a compound marble stratum, the anchoring section is mainly sandstone and siltstone, grout with a water-cement ratio of 0.4 is selected for initial grouting, and when the injection rate is greater than 30L/min, the grout concentration is thickened to 1 level, so that the grout can be ensured to be full, the grouting amount can be reduced, the grouting amount can be effectively reduced in use, and the waste of resources is effectively reduced.
S4, when the grouting amount of the anchor section in the anchor cable exceeds 3 times of the design amount, a consolidation grouting measure is needed, a current limiting (20L/min) measure and a voltage limiting (less than or equal to 0.2 MPa) measure are adopted in the consolidation grouting process, the grout to be coagulated is controlled to be 400L, the grout to be coagulated lasts for 30min, then the hole is drilled again for grouting, the grouting quality can be effectively ensured, and the grouting efficiency can be effectively improved in use.
And S5, post-grouting is performed 8-10h after the first grouting, the bonding effect of grout in the anchoring section can be enhanced through the post-grouting construction process, the grouting quality is ensured, the grout water cement ratio of the post-grouting is 0.4, the grouting quality can be better, and the use is convenient.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (4)
1. The utility model provides a compound marble stratum anchor rope slip casting construction equipment, includes connecting device (1), its characterized in that: the spring chuck device (3) is arranged on the outer surface of one side of the connecting device (1) close to the edge of the bottom, the outer surface of the connecting device (1) is provided with a screw thread on the upper half part, and the screw thread on the outer surface of the connecting device (1) is sleeved with a screw thread (2).
2. A grouting construction method for an anchor cable in a compound marble stratum is characterized by comprising the following steps:
s1, selecting 1% Sika Plast composite expanding agent doped with ordinary portland cement as grouting slurry, and selecting 2% water glass doped with ordinary portland cement for consolidation grouting to improve consolidation grouting effect;
s2, ensuring the grouting effect, determining 3 groups of water cement ratios by combining the actual geological conditions of the field, wherein the grouting water cement ratio cannot exceed 0.4: 0.3, 0.33, 0.4;
s3, under the condition of a compound marble stratum, the anchoring section is mainly sandstone and siltstone, and slurry with a water-cement ratio of 0.4 is selected for initial grouting;
s4, when the grouting amount of the anchor section in the anchor cable exceeds 3 times of the design amount, carrying out consolidation grouting measures, wherein the measures of flow limiting (20L/min) and pressure limiting (less than or equal to 0.2 MPa) are adopted in the consolidation grouting process, the grout to be coagulated is controlled to be 400L, the grout is drilled again after the coagulation time is 30min, and the grouting quality can be effectively ensured;
and S5, post-grouting is performed 8-10h after the first grouting, and the grouting construction process can enhance the bonding effect of the grout of the anchoring section and ensure the grouting quality.
3. The method for grouting construction of the anchor cable in the composite marble stratum as claimed in claim 2, wherein the method comprises the step of thickening the slurry concentration to 1 level when the injection rate is greater than 30L/min according to the operation step in S3, so that the slurry can be fully filled and the grouting amount can be reduced.
4. The method for grouting construction of the anchor cable in the compound marble stratum as claimed in claim 2, comprising the following steps: the post-grouting will be performed according to the operation in S5 with a slurry water-cement ratio of 0.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010260704.8A CN111455993A (en) | 2020-04-03 | 2020-04-03 | Grouting construction device and method for anchor cable of composite marble stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010260704.8A CN111455993A (en) | 2020-04-03 | 2020-04-03 | Grouting construction device and method for anchor cable of composite marble stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111455993A true CN111455993A (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010260704.8A Pending CN111455993A (en) | 2020-04-03 | 2020-04-03 | Grouting construction device and method for anchor cable of composite marble stratum |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2276945Y (en) * | 1996-01-23 | 1998-03-25 | 冶金工业部建筑研究总院 | Prestress anchorage cable dual-sealing repeat high pressure slip casting tube |
| CN101255698A (en) * | 2008-01-23 | 2008-09-03 | 湖南省建筑工程集团总公司 | Drifting sand layer and gravel stratum water-moving double-liquid high pressure slip-casting water-blocking construction method |
| CN203809025U (en) * | 2014-02-17 | 2014-09-03 | 济南力稳岩土工程有限公司 | Hole self-sealed high-strength grouting anchor cable |
| CN205477669U (en) * | 2016-04-15 | 2016-08-17 | 北京建工土木工程有限公司 | A slip casting system that is used for combined type lining cutting structure to backfill slip casting behind one's back |
| CN108755677A (en) * | 2018-06-15 | 2018-11-06 | 张玉芳 | A kind of prefabricated Inner bolt head anchor cable structure of multiple control slip casting |
| CN212926059U (en) * | 2020-04-03 | 2021-04-09 | 中交一公局集团有限公司 | Compound marble stratum anchor rope slip casting construction equipment |
-
2020
- 2020-04-03 CN CN202010260704.8A patent/CN111455993A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2276945Y (en) * | 1996-01-23 | 1998-03-25 | 冶金工业部建筑研究总院 | Prestress anchorage cable dual-sealing repeat high pressure slip casting tube |
| CN101255698A (en) * | 2008-01-23 | 2008-09-03 | 湖南省建筑工程集团总公司 | Drifting sand layer and gravel stratum water-moving double-liquid high pressure slip-casting water-blocking construction method |
| CN203809025U (en) * | 2014-02-17 | 2014-09-03 | 济南力稳岩土工程有限公司 | Hole self-sealed high-strength grouting anchor cable |
| CN205477669U (en) * | 2016-04-15 | 2016-08-17 | 北京建工土木工程有限公司 | A slip casting system that is used for combined type lining cutting structure to backfill slip casting behind one's back |
| CN108755677A (en) * | 2018-06-15 | 2018-11-06 | 张玉芳 | A kind of prefabricated Inner bolt head anchor cable structure of multiple control slip casting |
| CN212926059U (en) * | 2020-04-03 | 2021-04-09 | 中交一公局集团有限公司 | Compound marble stratum anchor rope slip casting construction equipment |
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