CN1259606A - Deep base pit sand pebble layer casing pipe hole forming technique - Google Patents
Deep base pit sand pebble layer casing pipe hole forming technique Download PDFInfo
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- CN1259606A CN1259606A CN 99116304 CN99116304A CN1259606A CN 1259606 A CN1259606 A CN 1259606A CN 99116304 CN99116304 CN 99116304 CN 99116304 A CN99116304 A CN 99116304A CN 1259606 A CN1259606 A CN 1259606A
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- casing pipe
- pipe hole
- hole forming
- forming technique
- pebble layer
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Abstract
The present invention relates to new technology of forming hole used in architectural industry for deep foundation pit in gril pebble gravel layer by using casing pipe, the hole formation method is to use vibrating machine and drill to the deepest position, pull out the drilling rod, sink in steal casing pipe, then use geological drilling machine to drill hole to position, high pressure sealing and blocking underground water. It is quick in construction and advance in technology.
Description
The present invention relates to construction industry, is a kind of deep base pit sand pebble layer casing pipe hole forming technique.
The job practices that is used for antiseepage during present domestic ground is handled is impervious wall, high-pressure rotary-spray and grouting basically.High-pressure rotary-spray is since invention in the latter stage sixties, through constantly improving characteristics such as having possessed speed of application is fast, good seepage-proof property, construction safety; Grouting construction, domestic all is to use the geological drilling rig pore-forming, it can strengthen is irritated the body density, reduces the permeability of ground.
But the required expense costliness of impervious wall construction, and at K=10
-1Still there is not the successfully example of construction in the sand gravel stratum of CM/S; High-pressure rotary-spray is holed in sand gravel stratum as the employing geological drilling rig and is used the certain material retaining wall, then required long in time limit, expense is high, as adopt the swell soil retaining wall hole of then easily collapsing, influence the duration, as to adopt behind the vibrodrill pore-forming be churning, but be difficult to break through 20M again in the degree of depth that sand gravel stratum is holed; The geological drilling rig well cementing, its rate of penetration in sand gravel stratum is slow, and easily blocks drilling rod and be difficult to retaining wall.
The present invention will provide a kind of speed of application fast, reduces construction cost, is suitable for the casing pipe hole forming technique that deep base pit sand pebble layer is used.
Concrete scheme of the present invention is: at first adopt vibrodrill to be drilled into depth capacity, extract drilling rod then, sink to steel sleeve, re-use geological drilling rig boring and put in place, adopt existing high-pressure slip-casting blocking technology at last, shutoff underground water.
Speed of application of the present invention is fast, and technology advanced person has solved the difficult problem that single use vibrodrill can not be finished the deep foundation ditch pore-forming, and is faster than single use geological drilling rig progress again, improves work efficiency more than 60 times, saved a large amount of engineering times, reduced construction cost.
The utility model is described in further detail below in conjunction with accompanying drawing:
Accompanying drawing is a construction technology key diagram of the present invention.
Embodiment: at first according to the position, design arrangement hole, position, hole in the constructure scheme, begin dead man after adopting vibrodrill pore-forming to 20 meter then, in the dead man process, inject suitable quantity of water mud, being beneficial to down the step sinks between seamless steel sleeve pipe and the sand ovum gravel hole in and combines tightly, sink to steel sleeve (referring to accompanying drawing, its label is 1) and build the mouth of pipe with thing, do mark and be beneficial to the next procedure construction.The cement paste of stationary steel bushing pipe can begin with the punching of geology machine after certain intensity has been arranged.The geological drilling rig drilling rod is lowered in steel sleeve, and it is dark to be drilled into required mark, protects hole wall with swell soil, descend Grouting Pipe at the bottom of the hole then, again flushing liquor is changed into the cement paste that will irritate, return out from sleeve opening until low amounts of water mud, build the aperture sealer then, begin the slip casting that circulates, after the overfall amount is greater than 20L/min, begin to pressurize with pressure regulator valve, having under the condition of overfall, add to design pressure as early as possible, if do not reach design pressure for a long time, then calculate grout consumption, the slip casting ending standard is:
1. when overfall pressure reaches 1.5MPa (design pressure) and double reading less than 3L/min;
2. when overfall thickens;
3. when not reaching design pressure, when grout consumption reached 3l/m, grouting finished back tube drawing rapidly, and in filling process, Grouting Pipe will often be rotated, otherwise plugging easily, pipe laying.
Master operation of the present invention is: the cloth hole---vibrodrill pore-forming------geological drilling rig pore-forming---high-pressure slip-casting of imbedding steel sleeve.
Claims (1)
1. adopting a kind of deep base pit sand pebble layer casing pipe hole forming technique in construction industry, is to use earlier rig pore-forming, back high-pressure slip-casting shutoff, it is characterized in that: the rig pore-forming is to adopt vibrodrill to be drilled into depth capacity earlier, extract drilling rod then, sink to steel sleeve, re-use geological drilling rig boring and put in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99116304 CN1259606A (en) | 1999-01-01 | 1999-01-01 | Deep base pit sand pebble layer casing pipe hole forming technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99116304 CN1259606A (en) | 1999-01-01 | 1999-01-01 | Deep base pit sand pebble layer casing pipe hole forming technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1259606A true CN1259606A (en) | 2000-07-12 |
Family
ID=5279134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99116304 Pending CN1259606A (en) | 1999-01-01 | 1999-01-01 | Deep base pit sand pebble layer casing pipe hole forming technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1259606A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985836A (en) * | 2010-09-10 | 2011-03-16 | 广东省基础工程公司 | Processing method of pile-wall type deep base pit supporting structure in case of encountering large boulder stone |
| CN102162335A (en) * | 2011-02-10 | 2011-08-24 | 中煤矿山建设集团有限责任公司 | A hole-forming method of drilling through an underground structure in an aquifer sand layer from the ground |
| CN103556645A (en) * | 2013-09-29 | 2014-02-05 | 河北钢铁集团矿业有限公司 | Method for forming grouting space in sand gravel layer |
| CN105649098A (en) * | 2016-01-21 | 2016-06-08 | 中国能源建设集团安徽电力建设第工程有限公司 | Multi-stage casing tube sand getting and boring method suitable for light well point precipitation of medium-coarse sand geology |
-
1999
- 1999-01-01 CN CN 99116304 patent/CN1259606A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985836A (en) * | 2010-09-10 | 2011-03-16 | 广东省基础工程公司 | Processing method of pile-wall type deep base pit supporting structure in case of encountering large boulder stone |
| CN101985836B (en) * | 2010-09-10 | 2012-03-28 | 广东省基础工程公司 | Processing method of pile-wall type deep base pit supporting structure in case of encountering large boulder stone |
| CN102162335A (en) * | 2011-02-10 | 2011-08-24 | 中煤矿山建设集团有限责任公司 | A hole-forming method of drilling through an underground structure in an aquifer sand layer from the ground |
| CN103556645A (en) * | 2013-09-29 | 2014-02-05 | 河北钢铁集团矿业有限公司 | Method for forming grouting space in sand gravel layer |
| CN103556645B (en) * | 2013-09-29 | 2015-06-17 | 河北钢铁集团矿业有限公司 | Method for forming grouting space in sand gravel layer |
| CN105649098A (en) * | 2016-01-21 | 2016-06-08 | 中国能源建设集团安徽电力建设第工程有限公司 | Multi-stage casing tube sand getting and boring method suitable for light well point precipitation of medium-coarse sand geology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |