CN207828946U - A kind of solution cavity waits for the drilling arrangement of reinforcing area - Google Patents
A kind of solution cavity waits for the drilling arrangement of reinforcing area Download PDFInfo
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- CN207828946U CN207828946U CN201721624464.5U CN201721624464U CN207828946U CN 207828946 U CN207828946 U CN 207828946U CN 201721624464 U CN201721624464 U CN 201721624464U CN 207828946 U CN207828946 U CN 207828946U
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- solution cavity
- reinforcing area
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- fluid grouting
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Abstract
A kind of solution cavity of the utility model waits for the drilling arrangement of reinforcing area, is related to technical field of building construction.For the rectangle net trellis to drill in existing perfusion equally, cause the grout distribution of perfusion uneven, the problem of ruggedized construction stability difference.The solution cavity waits for that the edge setting two fluid grouting hole of reinforcing area, the solution cavity wait for that single fluid grouting hole is arranged in reinforcing area, and the line of centres in the adjacent two fluid grouting hole and the single fluid grouting hole is in equilateral triangle.
Description
Technical field
The utility model is related to technical field of building construction, more particularly to a kind of solution cavity waits for the drilling arrangement knot of reinforcing area
Structure.
Background technology
There are solution cavity or karst collapses for karst region, when building multilayer or high-rise on this ground, due to ground
Overburden cover is insufficient, and the processing depth of pile foundation or composite foundation suffers from limitation, and seriously affects the steady of building lot
It is qualitative, reduce the bearing capacity of ground, therefore, before pile foundation or Composite foundation construction must to solution cavity or karst collapse region into
The necessary reinforcing filling processing of row.
For the solution cavity that buried depth is larger, it is a kind of relatively conventional processing method using perfusion reinforce, and passes through brill
Hole injects pouring material and is full of solution cavity, and pouring material such as cement mortar, cement mortar, cement concrete, sand can be under drillings
Rectangular tapered supporting point plays the role of bracing reinforcement to solution cavity, and the arrangement of drilling is usually equidistant rectangular mesh
Shape, but in Practical Project, the above-mentioned arrangement of drilling causes ruggedized construction stability is poor to ask there are grout distribution unevenness
Topic.
Invention content
For the rectangle net trellis to drill in existing perfusion equally, causes the grout distribution of perfusion uneven, reinforce
The problem of structural stability difference.The purpose of this utility model is to provide the drilling arrangement that a kind of solution cavity waits for reinforcing area, double
The plane distribution in liquid grout hole and single fluid grouting hole matrix arrangement in equilateral triangle so that solution cavity waits for the slurries in reinforcing area
Distribution is more uniform, and then ensures the stability of solution cavity foundation reinforcing structure.
Technical solution adopted by the utility model to solve its technical problems is：A kind of solution cavity waits for the drilling cloth of reinforcing area
Structure is set, the solution cavity waits for that the single liquid note of setting in reinforcing area is waited in the edge setting two fluid grouting hole of reinforcing area, the solution cavity
The line of centres in slurry hole, the adjacent two fluid grouting hole and the single fluid grouting hole is in equilateral triangle.
Preferably, the spacing in adjacent two fluid grouting hole and/or single fluid grouting hole is 2m.
Preferably, the two fluid grouting hole and the single fluid grouting hole all extend to the bottom that the solution cavity waits for reinforcing area
Portion.
Preferably, be equipped with Grouting Pipe in the two fluid grouting hole and the single fluid grouting hole, the slip casting bottom of the tube into
Enter the solution cavity and waits for that reinforcing area bottom plate or less at least 0.5m, the Grouting Pipe top are above the ground level.
The effect of the utility model is：A kind of solution cavity of the utility model waits for the drilling arrangement of reinforcing area,
Solution cavity waits for the edge setting two fluid grouting hole of reinforcing area, waits for that single fluid grouting hole is arranged in reinforcing area in solution cavity, by cement and
Double slurries made of waterglass are disposably filled into two fluid grouting hole, and dual slurry is with the strong spy of quick solidification and cementing properties
Charges and mortar in point, dual slurry and solution cavity are connected to and the wall for grouting that solution cavity waits for reinforcing area are integrally formed, to block
The communicating passage of karst achievees the purpose that separating solution cavity waits for reinforcing area；It is noted in the single fluid grouting hole that solution cavity waits for reinforcing area
Enter cement mortar, solution cavity is waited for that the cavity filling of reinforcing area is closely knit and is an entirety, cut-out solution cavity hole with consolidations such as wall for grouting
Body and underground water, solution crack water contact, and to ensure the stability of ground and the safety of building, solve the construction stage rich in molten
The high problem of underground pipe gallery settlement request under the geological conditions of hole, moreover, the plane in two fluid grouting hole and single fluid grouting hole point
Cloth matrix arrangement in equilateral triangle so that solution cavity waits for that the grout distribution in reinforcing area is more uniform, and then with ensureing solution cavity
The stability of base ruggedized construction.
Description of the drawings
Fig. 1 is point for waiting for two fluid grouting hole and single fluid grouting hole in reinforcing area of solution cavity in one embodiment of the utility model
Butut；
Fig. 2 is the sectional view in the two fluid grouting hole of one embodiment of the utility model.
Figure label is as follows：
Solution cavity boundary line a is verified；Solution cavity boundary line b is not verified；Solution cavity waits for reinforcing area A；Two fluid grouting hole 1；Single liquid
Injected hole 2；Solution cavity 10；Grouting Pipe 12；Stop grouting plug 14.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments to the utility model proposes a kind of solution cavity wait for the drilling cloth of reinforcing area
Structure is set to be described in further detail.According to following explanation and claims, the advantages of the utility model and feature will more
It is clear.It should be noted that attached drawing is all made of very simplified form and uses non-accurate ratio, only to convenient, apparent
Ground aids in illustrating the purpose of the utility model embodiment.For sake of convenience, "upper" described below, "lower" and attached drawing it is upper,
Under direction it is consistent, but this can't be the limitation of technical solutions of the utility model.
The present embodiment is distributed with by taking certain architectural engineering positioned at karst area as an example below underground pipe gallery construction area
The irregular solution cavity 10 of construction safety is influenced, therefore, consolidation process need to be implemented to the underground karst cavity 10 below foundation pit, below
A kind of solution cavity for being illustrated with reference to Fig. 1 the utility model waits for that the drilling arrangement of reinforcing area, solution cavity wait for the edge of reinforcing area A
Two fluid grouting hole 1 is set, and solution cavity waits for setting single fluid grouting hole 2, adjacent two fluid grouting hole 1 and single fluid grouting in reinforcing area A
The line of centres in hole 2 is in equilateral triangle.
A kind of solution cavity of the utility model waits for the drilling arrangement of reinforcing area, and the edge of reinforcing area A is waited in solution cavity
Two fluid grouting hole 1 is set, waits for that single fluid grouting hole 2 is arranged in reinforcing area A in solution cavity, double slurries made of cement and waterglass
It disposably is filled into two fluid grouting hole 1, dual slurry has the characteristics that quick solidification and cementing properties are strong, in dual slurry and solution cavity 10
Charges and mortar be connected to and the wall for grouting that solution cavity waits for reinforcing area A is integrally formed is reached to block the communicating passage of karst
The purpose of reinforcing area A is waited for separation solution cavity；Cement mortar is injected in the single fluid grouting hole 2 that solution cavity waits for reinforcing area A, by solution cavity
Wait for that the cavity filling of reinforcing area A is closely knit and is an entirety with the consolidations such as wall for grouting, it is cut-out 10 hole body of solution cavity and underground water, molten
The contact of gap water solves the construction stage rich in 10 geological conditions of solution cavity to ensure the stability of ground and the safety of building
The high problem of lower underground pipe gallery settlement request, moreover, the plane distribution in two fluid grouting hole and single fluid grouting hole is in equilateral three
Angular matrix arrangement so that solution cavity waits for that the grout distribution in reinforcing area A is more uniform, and then ensures 10 foundation stabilization knot of solution cavity
The stability of structure.
The spacing in adjacent two fluid grouting hole 1 and/or single fluid grouting hole 2 is 2m, and above-mentioned spacing setting can ensure to inject
Slurries wait for reinforcing area full of solution cavity in infusion time.
Determine that the processing depth bounds of solution cavity 10, two fluid grouting hole 1 and single fluid grouting hole 2 prolong according to geology borehole data
Extend to the bottom that solution cavity waits for reinforcing area A so that the slurries of injection first fill the bottom that solution cavity waits for reinforcing area A, it then follows " first outer
Enclose rear internal, first lower part upper back " sequence of construction, carry out the strengthening construction that solution cavity waits for reinforcing area A upwards by bottom, can
Avoid the internal unfilled gap of appearance to influence construction quality.
The aperture in two fluid grouting hole 1 and single fluid grouting hole 2 is φ 150mm, hole depth >=10m, the present embodiment in the present embodiment
Using 200 type drilling machine pore-forming of geology.Be equipped with Grouting Pipe 12 in two fluid grouting hole 1 and single fluid grouting hole 2,12 bottom of Grouting Pipe into
Enter solution cavity and wait for reinforcing area A bottom plates or less at least 0.5m, 12 top of Grouting Pipe is above the ground level 350mm, and Grouting Pipe 12 is by φ 75mm
Steel pipe is made.
Illustrate that solution cavity in the present embodiment waits for the reinforcing process of reinforcing area with reference to Fig. 1 and Fig. 2：
S1：After excavation of foundation pit, supporting, precipitation are completed, before underground pipe gallery agent structure starts construction, scene is adopted
It surveys with geophysical prospecting method and ordinatedly and infers 10 distribution characteristics of solution cavity, including 10 size of solution cavity, range, position and quantity etc., use
Top plate cave in voluntarily filling thickness method evaluation 10 stability of solution cavity, and according to Use of Geophysical Data determination verified solution cavity boundary line a and
Solution cavity boundary line b is not verified, has been verified solution cavity boundary line a herein and has been referred to being in the solution cavity boundary line below foundation pit, has not verified
Solution cavity boundary line b refers to the solution cavity boundary line in not below foundation pit；
S2：Several two fluid grouting holes 1 are bored along solution cavity boundary line a outer rims have been verified, the line of centres in two fluid grouting hole 1 is made to enclose
Synthesis solution cavity waits for reinforcing area A, waits for boring single fluid grouting hole 2 in reinforcing area A in solution cavity, in two fluid grouting hole 1 and single fluid grouting
Grouting Pipe 12 is installed respectively in hole 2, and is arranged at the top of the gap between two fluid grouting hole 1, single fluid grouting hole 2 and Grouting Pipe 12
Stop grouting plug 14, stop grouting plug 14 are made by stopping filled therewith, and slurries can be limited in a certain range in slip casting region and carry out by it
Slip casting, only slurry time control to be coagulated is within 2-5 days；
S3：Implement slip casing by pressure to Grouting Pipe 12 after the solidification of only slurry, first in the two fluid grouting hole 1 injection by cement,
Dual slurry is to form the wall for grouting that solution cavity waits for reinforcing area A made of water and waterglass, then, the injection in single fluid grouting hole 2
Single slurry (i.e. cement mortar) is implemented to reinforce, and when slip casing by pressure need to be carried out at the same time monitoring and controlling, monitors road, foundation pit bottom closely and faces
When support pile whether occur sedimentation, deformation, cracking etc. endanger phenomenon, carry out data analysis in time, feed back information to design, apply
Work order position, optimal design parameter and construction method work as single fluid grouting to ensure the construction safety of underground pipe gallery agent structure
Terminate slip casting when grouting pressure reaches design value in hole 2, the standard for terminating slip casting is when grouting pressure reaches in single fluid grouting hole 2
Design final pressure simultaneously continues slip casting 10min or more, and grouting amount has reached design grouting amount, midge amount 20L/min~30L/min with
When lower, you can terminate the hole slip casting.Solution cavity intensity after being reinforced by this method reaches 20MPa or more, disclosure satisfy that normal fortune
The requirement that underground pipe gallery settles under the conditions of battalion.Geophysical prospecting method uses Seismic Imaging Method equipment (such as WZG-48A in the present embodiment
Engineering seismograph) and geological radar method equipment (such as U.S. GSSI companies SIR-20 types geological radar).
Since the requirement of 10 foundation stabilization of solution cavity is relatively high, above-mentioned steps S2 further includes being tested really according to first solution cavity 10
Determine grouting parameter, grouting parameter includes grouting pressure, grouting amount parameter selection, the choosing of Double-liquid mud-injection pump and grouting automatic recorder equipment
It selects, the selection of main construction techniques, the surveillance and control measure etc. of slip casing by pressure, the grouting pump grouting pressure of the present embodiment is controlled 0.6
Within the scope of~1.0MPa, wherein 1 grouting pressure of two fluid grouting hole is 0.6~0.8Mp, and 2 grouting pressure of single fluid grouting hole is 0.8
~1Mpa, injection speed control are controlled in 20~70L/min, slip casting time by segmentation (0.5m) for 5~10 minutes or so；This implementation
Example uses JT-E6 grouting automatic recorders, and record flow accuracy 1%, pressure precision 0.5%, density accuracy 0.5% also can be according to fillings
Sizing process selection parameter, can do packer permeability test, waterproofing grade IPX4, and adaptive temperature is 40 degrees below zero to 60 degree above freezing.
Since physical prospecting infers that Explanation Accuracy is limited, solution cavity 10 is likely to be communicated with each other by several small solution cavities 10 and be formed,
Therefore 10 range of solution cavity that physical prospecting is explained may be excessive, therefore must carry out drilling verification to physical prospecting explanation results.Above-mentioned solution cavity ground
Reinforcement means further includes step S4：After solution cavity waits for reinforcing area A grouting and reinforcings at least 28 days, examined using drilled drawing-core method
Consolidation process effect, sampling observation quantity, which is no less than, handles the 2%~5% of point.
After 10 stiffening basic ground of above-mentioned solution cavity reaches design requirement, carries out slope retaining and reinforced mesh is installed, simultaneously
Ensure that foundation pit is in stable state when construction, after the completion of foundation pit basement process, the laying water-proof coiled material on ground binds bottom plate
Reinforcing bar and casting concrete, then the construction of side wall and roof steel bar and casting concrete completion underground pipe gallery is installed.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Calmly, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content, belong to right and want
Seek range.
Claims (4)
1. a kind of solution cavity waits for the drilling arrangement of reinforcing area, it is characterised in that：The solution cavity waits for that the edge of reinforcing area is set
Two fluid grouting hole is set, the solution cavity waits for setting single fluid grouting hole, the adjacent two fluid grouting hole and the list in reinforcing area
The line of centres in liquid grout hole is in equilateral triangle.
2. solution cavity according to claim 1 waits for the drilling arrangement of reinforcing area, it is characterised in that：Adjacent biliquid note
The spacing for starching hole and/or single fluid grouting hole is 2m.
3. solution cavity according to claim 1 or 2 waits for the drilling arrangement of reinforcing area, it is characterised in that：The biliquid
Injected hole and the single fluid grouting hole all extend to the bottom that the solution cavity waits for reinforcing area.
4. solution cavity according to claim 1 or 2 waits for the drilling arrangement of reinforcing area, it is characterised in that：The biliquid
Grouting Pipe is equipped in injected hole and the single fluid grouting hole, the slip casting bottom of the tube waits for reinforcing area bottom plate into the solution cavity
At least 0.5m below, the Grouting Pipe top are above the ground level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721624464.5U CN207828946U (en) | 2017-11-29 | 2017-11-29 | A kind of solution cavity waits for the drilling arrangement of reinforcing area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721624464.5U CN207828946U (en) | 2017-11-29 | 2017-11-29 | A kind of solution cavity waits for the drilling arrangement of reinforcing area |
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| Publication Number | Publication Date |
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| CN207828946U true CN207828946U (en) | 2018-09-07 |
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| CN201721624464.5U Active CN207828946U (en) | 2017-11-29 | 2017-11-29 | A kind of solution cavity waits for the drilling arrangement of reinforcing area |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024666A (en) * | 2018-09-11 | 2018-12-18 | 中铁磁浮交通投资建设有限公司 | A kind of fence net composite structure and construction method with prevention and treatment and early warning karst collapse |
-
2017
- 2017-11-29 CN CN201721624464.5U patent/CN207828946U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024666A (en) * | 2018-09-11 | 2018-12-18 | 中铁磁浮交通投资建设有限公司 | A kind of fence net composite structure and construction method with prevention and treatment and early warning karst collapse |
| CN109024666B (en) * | 2018-09-11 | 2024-03-15 | 中铁磁浮交通投资建设有限公司 | Wall network combined structure capable of preventing and warning karst collapse and construction method |
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