CN103741568A - High-fill settling subgrade grouting process - Google Patents
High-fill settling subgrade grouting process Download PDFInfo
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- CN103741568A CN103741568A CN201310725755.3A CN201310725755A CN103741568A CN 103741568 A CN103741568 A CN 103741568A CN 201310725755 A CN201310725755 A CN 201310725755A CN 103741568 A CN103741568 A CN 103741568A
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- grouting
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Abstract
The invention discloses a high-fill settling subgrade grouting process, which comprises the steps of uniformly distributing grouting holes in a working face, wherein part of the grouting holes are taken as pilot holes; performing a drilling hole-forming process on each pilot hole; performing a grouting process on the drilled hole of each pilot hole; and according to acquired high-fill settling subgrade form data, performing the summarization of the drilling process and the grouting process on each pilot hole. According to the high-fill settling subgrade grouting process disclosed by the invention, subgrade form data is acquired in the process of drilling, then a grouting scheme for the grouting holes is determined, the drilling and grouting of subsequent grouting holes are guided by using geological conditions summarized by the pilot holes and a construction process, and the construction of plenty of normal holes can be performed then, so that the large-area construction implementation is facilitated. In such a way, the physical and mechanical properties of a whole subgrade are improved, so that the subgrade is not settled under the action of traffic loads and dead-weights, and buildings subjected to non-uniform settlement are restored to normal positions, thereby increasing the strength and stiffness of the subgrade, and preventing or weakening the re-settling of the subgrade.
Description
Technical field
The present invention relates to grouting process technical field, relate in particular to a kind of high settlement of fill grouting of road bed technique.
Background technology
The large-scale expressway construction in west area, inevitably to run into roadbed high fill out deep-cut, the engineering problem such as old road reorganization and expansion, it is one of study hotspot of engineering field that high fills embankment Defects Treatment becomes.High fills embankment generally all has long construction period, and hydrogeology is complicated, and narrow field requires strictly construction quality, and embankment protection grade is high, high cost feature.These features have determined that high fills embankment is different from general common embankment, have possessed disease compared with the condition of high rate.As time goes on and the repeated action of vehicular load after high embankment Practical Completion,, high embankment is faced with the danger of whole sinking, local subsidence and slope failure.
More serious when local subgrade settlement, area is larger, changes in the situation that the method for banketing cannot meet the demands, need to adopt grouting to process local roadbed.Grouting process is to utilize hydraulic pressure, air pressure or electrochemical principle, sinking part embankment filled soil is holed, guarantee that hole depth penetrates weak floor, slurries are evenly injected to crack and the hole of various media via grouting pipe, control after certain hour, make slurries and original grogs or crack be cemented to an integral body, form " calculus body " that a physical property and chemical property all can be more stable, improve the physico-mechanical properties of whole ground, make roadbed under traffic load and Gravitative Loads, no longer produce sedimentation, make the building that differential settlement occurs return to original position, thereby improve the strength and stiffness of roadbed, prevent or weaken sinking again of roadbed.
Summary of the invention
The object of the present invention is to provide a kind of high settlement of fill grouting of road bed technique, to improve the physico-mechanical properties of whole ground, make roadbed under traffic load and Gravitative Loads, no longer produce sedimentation, make the building that differential settlement occurs return to original position, thereby improve the strength and stiffness of roadbed, prevent or weaken sinking again of roadbed.
For achieving the above object, the present invention has adopted following technical scheme:
High settlement of fill grouting of road bed technique, the step of this technique is:
S1, at high settlement of fill roadbed work plane, carry out the even cloth hole of injected hole, and using the described injected hole of some as pilot hole;
S2, pilot hole described in each is implemented to Completion of Drilling Hole technique: first install orifice sleeve and carry out solid pipe, whole hole after drilling to completion then, and adopt mud circulation to carry out hole clearly to the boring of pilot hole described in each;
In boring procedure, gather at a certain distance compactness, intensity, initial pressure, drilling depth, the grouting position state data of this layer of roadbed;
S3, the boring of pilot hole described in each is implemented to grouting process: adopt slurry floral tube down at the bottom of hole, then the method for Piecemeal erection packer is carried out slip casting, and institute's injection slurry is single liquid slurries from bottom to top;
S4, according to the high settlement of fill roadbed morphological data gathering, determine geology and geomorphology, then each pilot hole is implemented the summary of bore process and grouting process.
As the improvement to technique scheme, the quantity of described pilot hole is 25%～35% of described injected hole quantity.
As the improvement to technique scheme, described high settlement of fill roadbed comprises gravelly soil, gravel soil filler roadbed and cohesive soil filler roadbed.
As the improvement to technique scheme, the grouting pressure of described slip casting is 0.5 MPa～4.0 MPa.
As the improvement to technique scheme, the boring aperture of described injected hole is 91～130mm.
Compared with prior art, the invention has the beneficial effects as follows:
The injected hole that high settlement of fill grouting of road bed technique of the present invention is chosen some is as pilot hole, and in boring procedure, obtain roadbed morphological data, determine the grouting program of injected hole, the boring, the slip casting that utilize geological condition that pilot hole sums up and construction technology to instruct follow-up injected hole, can follow up in a large number in normal hole, be conducive to large area and launch construction.Improve the physico-mechanical properties of whole ground, make roadbed under traffic load and Gravitative Loads, no longer produce sedimentation, make the building that differential settlement occurs return to original position, thereby improve the strength and stiffness of roadbed, prevent or weaken sinking again of roadbed.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the process chart of high settlement of fill grouting of road bed technique of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, any modification of doing, are equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
As shown in Figure 1, high settlement of fill grouting of road bed technique of the present invention, the step of this technique is:
S1, at high settlement of fill roadbed work plane, carry out the even cloth hole of injected hole, and using the described injected hole of some as pilot hole;
S2, pilot hole described in each is implemented to Completion of Drilling Hole technique: first install orifice sleeve and carry out solid pipe, whole hole after drilling to completion then, and adopt mud circulation to carry out hole clearly to the boring of pilot hole described in each;
In boring procedure, gather at a certain distance compactness, intensity, initial pressure, drilling depth, the grouting position state data of this layer of roadbed;
S3, the boring of pilot hole described in each is implemented to grouting process: adopt slurry floral tube down at the bottom of hole, then the method for Piecemeal erection packer is carried out slip casting, and institute's injection slurry is single liquid slurries from bottom to top;
S4, according to the high settlement of fill roadbed morphological data gathering, determine geology and geomorphology, then each pilot hole is implemented the summary of bore process and grouting process.
The quantity of described pilot hole is 25%～35% of described injected hole quantity.
Described high settlement of fill roadbed comprises gravelly soil, gravel soil filler roadbed and cohesive soil filler roadbed.
The grouting pressure of described slip casting is 0.5 MPa～4.0 MPa.
The boring aperture of described injected hole is 91～130mm.
Claims (5)
1. a high settlement of fill grouting of road bed technique, is characterized in that: the step of this technique is:
S1, at high settlement of fill roadbed work plane, carry out the even cloth hole of injected hole, and using the described injected hole of some as pilot hole;
S2, pilot hole described in each is implemented to Completion of Drilling Hole technique: first install orifice sleeve and carry out solid pipe, whole hole after drilling to completion then, and adopt mud circulation to carry out hole clearly to the boring of pilot hole described in each;
In boring procedure, gather at a certain distance compactness, intensity, initial pressure, drilling depth, the grouting position state data of this layer of roadbed;
S3, the boring of pilot hole described in each is implemented to grouting process: adopt slurry floral tube down at the bottom of hole, then the method for Piecemeal erection packer is carried out slip casting, and institute's injection slurry is single liquid slurries from bottom to top;
S4, according to the high settlement of fill roadbed morphological data gathering, determine geology and geomorphology, then each pilot hole is implemented the summary of bore process and grouting process.
2. high settlement of fill grouting of road bed technique according to claim 1, is characterized in that: the quantity of described pilot hole is 25%～35% of described injected hole quantity.
3. high settlement of fill grouting of road bed technique according to claim 1 and 2, is characterized in that: described high settlement of fill roadbed comprises gravelly soil, gravel soil filler roadbed and cohesive soil filler roadbed.
4. high settlement of fill grouting of road bed technique according to claim 3, is characterized in that: the grouting pressure of described slip casting is 0.5 MPa～4.0 MPa.
5. high settlement of fill grouting of road bed technique according to claim 3, is characterized in that: the boring aperture of described injected hole is 91～130mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725755.3A CN103741568A (en) | 2013-12-25 | 2013-12-25 | High-fill settling subgrade grouting process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310725755.3A CN103741568A (en) | 2013-12-25 | 2013-12-25 | High-fill settling subgrade grouting process |
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| CN103741568A true CN103741568A (en) | 2014-04-23 |
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| CN201310725755.3A Pending CN103741568A (en) | 2013-12-25 | 2013-12-25 | High-fill settling subgrade grouting process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389254A (en) * | 2014-11-20 | 2015-03-04 | 江苏省交通科学研究院股份有限公司 | Rockfill embankment sinking disease treatment construction method |
Citations (5)
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|---|---|---|---|---|
| WO2011014975A1 (en) * | 2009-08-05 | 2011-02-10 | Proes S.A. | Flexible paving structure for streets and roads, comprised of a stabilized inferior base and an upper laying pavement of reduced thickness |
| CN102392402A (en) * | 2011-11-11 | 2012-03-28 | 中铁六局集团有限公司 | Road and bridge transition section grouting construction method used during jacking construction |
| CN102561139A (en) * | 2012-01-13 | 2012-07-11 | 鞍钢集团矿业公司 | High-strength steel fiber concrete pavement structure for high-tonnage automobile and construction method |
| CN102864712A (en) * | 2012-10-16 | 2013-01-09 | 中铁第四勘察设计院集团有限公司 | Method and structure for micro-disturbance renovating of existing high speed railway subgrade deformation disease |
| CN102888795A (en) * | 2012-10-25 | 2013-01-23 | 中铁十九局集团有限公司 | Karst roadbed grouting process |
-
2013
- 2013-12-25 CN CN201310725755.3A patent/CN103741568A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011014975A1 (en) * | 2009-08-05 | 2011-02-10 | Proes S.A. | Flexible paving structure for streets and roads, comprised of a stabilized inferior base and an upper laying pavement of reduced thickness |
| CN102392402A (en) * | 2011-11-11 | 2012-03-28 | 中铁六局集团有限公司 | Road and bridge transition section grouting construction method used during jacking construction |
| CN102561139A (en) * | 2012-01-13 | 2012-07-11 | 鞍钢集团矿业公司 | High-strength steel fiber concrete pavement structure for high-tonnage automobile and construction method |
| CN102864712A (en) * | 2012-10-16 | 2013-01-09 | 中铁第四勘察设计院集团有限公司 | Method and structure for micro-disturbance renovating of existing high speed railway subgrade deformation disease |
| CN102888795A (en) * | 2012-10-25 | 2013-01-23 | 中铁十九局集团有限公司 | Karst roadbed grouting process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389254A (en) * | 2014-11-20 | 2015-03-04 | 江苏省交通科学研究院股份有限公司 | Rockfill embankment sinking disease treatment construction method |
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Application publication date: 20140423 |