CN112983258A - Down-the-hole hammer rapid hole forming construction method for unconsolidated rock stratum geology - Google Patents
Down-the-hole hammer rapid hole forming construction method for unconsolidated rock stratum geology Download PDFInfo
- Publication number
- CN112983258A CN112983258A CN202110115799.9A CN202110115799A CN112983258A CN 112983258 A CN112983258 A CN 112983258A CN 202110115799 A CN202110115799 A CN 202110115799A CN 112983258 A CN112983258 A CN 112983258A
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- China
- Prior art keywords
- hole
- hole hammer
- drilling
- rock stratum
- construction method
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- 239000011435 rock Substances 0.000 title claims abstract description 26
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000005553 drilling Methods 0.000 claims abstract description 42
- 239000004088 foaming agent Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000002689 soil Substances 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000010802 sludge Substances 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 239000002893 slag Substances 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000004927 clay Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of building construction, in particular to a down-the-hole hammer rapid hole forming construction method for unconsolidated rock stratum geology, which comprises the following steps: s1, drilling by adopting a rotary digging long spiral drilling machine; s2, drilling a hole on a base hole of the rotary excavating long spiral drilling machine by adopting a Luoyang drilling machine to a rock stratum; s3, adopting a foaming agent to match with the down-the-hole hammer to continuously drill downwards into the rock stratum, and having the advantages that: the down-the-hole hammer is matched with a rotary drilling long spiral drilling machine and a Luoyang drill to be used, so that the geology can be effectively drilled; the down-the-hole hammer is matched with the foaming agent, so that slag materials generated in the drilling process of the down-the-hole hammer can be effectively discharged, the hole forming efficiency of the down-the-hole hammer is improved, the hole forming quality of the down-the-hole hammer is ensured, the construction progress is accelerated, and the cost is saved.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a down-the-hole hammer rapid hole forming construction method for unconsolidated rock stratum geology.
Background
The down-the-hole hammer is an indispensable tool in drilling work, and the specific structure is as disclosed in the Chinese patent: a down-the-hole hammer, shown in patent No. 2013202028002, comprising: a central drill bit, an eccentric drill bit and a down-the-hole hammer body; the down-the-hole hammer body is of a cylindrical structure, and the central drill bit is coaxially connected with one end of the down-the-hole hammer body; the eccentric drill bit is positioned between the central drill bit and the down-the-hole hammer body, and the eccentric drill bit and the down-the-hole hammer body are coaxially arranged.
The working principle of the down-the-hole hammer is that air with pressure is provided by an air compressor to drive a piston in a cylinder body of the down-the-hole hammer to axially and repeatedly move, so that a blade of an eccentric drill bit at the end of the down-the-hole hammer body rotates and simultaneously generates impact efficiency, and therefore the down-the-hole hammer generates crushing damage to a rock stratum to achieve a drilling effect, and the down-the-hole hammer has the advantages of high drilling efficiency and the like when used for construction.
The down-the-hole hammer construction is suitable for gravelly soil and clay layers with certain bonding strength, and is particularly suitable for a stratification layer in a strongly weathered layer and a rock stratum with certain strength. However, when a loose layer exists below the rock stratum, the conditions of drill clamping, drill blocking and the like can occur when the down-the-hole hammer is directly adopted for construction.
Meanwhile, geology in the actual construction process is various, and the hole opening part is completely applicable only by using the down-the-hole hammer, so that different types of mechanical hole opening equipment are very necessary to be matched for use.
Disclosure of Invention
The invention provides a down-the-hole hammer rapid hole forming construction method for unconsolidated rock stratum geology, which can effectively solve the problems of drill clamping and drill sticking of a down-the-hole hammer in drilling under the geological condition.
In order to achieve the purpose, the down-the-hole hammer rapid hole forming construction method for unconsolidated rock stratum geology is characterized by comprising the following steps:
s1, drilling by adopting a rotary digging long spiral drilling machine;
s2, drilling a hole on a base hole of the rotary excavating long spiral drilling machine by adopting a Luoyang drilling machine to a rock stratum;
and S3, continuously drilling a hole downwards in the rock stratum by adopting a foaming agent and a down-the-hole hammer.
Preferably, the described approach is applicable to the following geology: the upper layer is a soil layer, the middle layer is a rock layer, and the lower layer is a loose layer.
Preferably, the soil layer comprises a backfill soil layer and a gravel soil layer, and the loose layer comprises a sludge layer.
Preferably, the soil layer thickness is greater than 11 meters.
Preferably, the foaming agent is used as a down-the-hole hammer drill pile retaining wall.
Preferably, the down-the-hole hammer is drilled down from the formation to a depth of at least 7 metres.
Preferably, the length of the drill rod of the rotary excavating long spiral drilling rig is 11 meters.
Compared with the prior art, the invention has the advantages that: the down-the-hole hammer is matched with a rotary drilling long spiral drilling machine and a Luoyang drill to be used, so that the geology can be effectively drilled; the down-the-hole hammer is matched with the foaming agent, so that slag materials generated in the drilling process of the down-the-hole hammer can be effectively discharged, the hole forming efficiency of the down-the-hole hammer is improved, the hole forming quality of the down-the-hole hammer is ensured, the construction progress is accelerated, and the cost is saved.
Detailed Description
The principles of the present invention will be readily apparent to those skilled in the art. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The lattice Shixi garden is located at the north side of Yanshan east street in Jizhou area of Tianjin city, and the west side of fruit Ying road, construction is needed in the area, residential buildings and underground garages are built, pile driving foundations are needed at the bottoms of partial residential buildings and underground garages, the pile driving is a reinforced concrete cast-in-place pile with the pile diameter of 400mm, and the concrete strength of a pile body is C30. According to the construction requirement, the pile foundation needs to enter the position with the depth of the rock stratum not less than 7m, the efficiency of the common hole forming machine is low, the construction progress requirement cannot be met, and the mechanical hole forming by adopting the down-the-hole hammer is determined to be most appropriate through tests. However, the geological environment of the site is too complex, and besides the completely weathered rock layer, a graded sand layer and a clay layer exist. The down-the-hole hammer can not form a hole normally, and the long-time practice shows that the down-the-hole hammer matched with the foaming agent has good construction effect, so that the method is initiated in China.
The specific method comprises the following steps:
1. selecting a water tank with the volume of 1 cubic meter, adding water and a foaming agent into the water tank, and mixing the water and the foaming agent;
2. connecting a water tank mixed with water and a foaming agent with an air supply pipe;
3. the mixture is fed into the hole by high-pressure wind while the down-the-hole hammer drills the hole, and the foaming agent has high viscosity and certain expansion force, so that the foaming agent can be used as a protective wall of a drilled pile, and a fine sand layer and a scrap layer in the hole can be bonded together;
4. the air supply pressure of the air compressor is increased to 3MPa, and slag in the hole can be smoothly discharged.
Meanwhile, the geological environment of a site is complex, a soil layer, a backfill soil layer and a gravel soil layer are arranged above a rock stratum, a loose broken layer and a sludge layer are arranged below the rock stratum, a down-the-hole hammer is matched with a foaming agent for downward construction of the rock stratum, a rotary drilling rig is adopted for soil taking and guiding for construction above the rock stratum, the down-the-hole hammer is replaced to continue drilling when the rock stratum is drilled, the site is narrow, the distance between a building seat and a ground reservoir is short (the minimum distance is only 300 mm), a large-size rotary drilling long spiral drilling rig cannot be selected, according to site investigation of a drilling rig manufacturer, only a drilling rig below 160E series can be used, the drilling rig is small, the operation surface is small, the length of a drill rod is 11 meters, and when the thickness of the soil layer exceeds 11 meters, the rotary drilling long spiral drilling rig cannot continue drilling, the rotary drilling long spiral drilling.
Claims (7)
1. A down-the-hole hammer rapid hole forming construction method for unconsolidated rock stratum geology is characterized by comprising the following steps:
s1, drilling by adopting a rotary digging long spiral drilling machine;
s2, drilling a hole on a base hole of the rotary excavating long spiral drilling machine by adopting a Luoyang drilling machine to a rock stratum;
and S3, continuously drilling a hole downwards in the rock stratum by adopting a foaming agent and a down-the-hole hammer.
2. The down-the-hole hammer rapid hole forming construction method for unconsolidated formation geology as claimed in claim 1, wherein: the described approach is applicable to the following geology: the upper layer is a soil layer, the middle layer is a rock layer, and the lower layer is a loose layer.
3. The down-the-hole hammer rapid hole forming construction method for unconsolidated formation geology of claim 2 comprises the following steps: the method is characterized in that: the soil layer comprises a backfill soil layer and a gravel soil layer, and the loose layer comprises a sludge layer.
4. The down-the-hole hammer rapid hole-forming construction method for unconsolidated formation geology as claimed in claim 2, wherein: the thickness of the soil layer is more than 11 meters.
5. The down-the-hole hammer rapid hole forming construction method for unconsolidated formation geology as claimed in claim 1, wherein: the foaming agent is used as a down-the-hole hammer drill pile retaining wall.
6. The down-the-hole hammer rapid hole forming construction method for unconsolidated formation geology as claimed in claim 1, wherein: the down-the-hole hammer drills a hole downwards from the rock stratum, and the drilling depth is at least 7 meters.
7. The down-the-hole hammer rapid hole forming construction method for unconsolidated formation geology as claimed in claim 1, wherein: the length of a drill rod of the rotary excavating long spiral drilling machine is 11 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110115799.9A CN112983258A (en) | 2021-01-28 | 2021-01-28 | Down-the-hole hammer rapid hole forming construction method for unconsolidated rock stratum geology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110115799.9A CN112983258A (en) | 2021-01-28 | 2021-01-28 | Down-the-hole hammer rapid hole forming construction method for unconsolidated rock stratum geology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112983258A true CN112983258A (en) | 2021-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110115799.9A Pending CN112983258A (en) | 2021-01-28 | 2021-01-28 | Down-the-hole hammer rapid hole forming construction method for unconsolidated rock stratum geology |
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| CN (1) | CN112983258A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293544A (en) * | 2021-12-31 | 2022-04-08 | 北京中岩大地科技股份有限公司 | Construction method for forming pile by drilling with hydraulic down-the-hole hammer |
| CN114809027A (en) * | 2022-04-20 | 2022-07-29 | 中国建筑土木建设有限公司 | Construction method of volcanic ash underground pile foundation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101122130A (en) * | 2007-07-04 | 2008-02-13 | 广州市建筑科学研究院 | Construction method of drilling follow casting pile used for building or bridge foundation |
| CN101831906A (en) * | 2009-03-09 | 2010-09-15 | 钱圣德 | Dry type pneumatic rock drilling pile-driving machine and working method thereof |
| CN103089146A (en) * | 2013-01-23 | 2013-05-08 | 阎慧奎 | Engineering driller capable of conducting superfluid concrete grouting pile driving construction on hard rock strata |
| CN103244051A (en) * | 2013-05-11 | 2013-08-14 | 重庆卓典建设工程有限公司 | Combined down-hole hammer drilling tool and pile forming construction method thereof |
| CN111335306A (en) * | 2020-03-19 | 2020-06-26 | 中铁六局集团有限公司 | Rapid construction method for deep and thick hard rock section drilled pile |
-
2021
- 2021-01-28 CN CN202110115799.9A patent/CN112983258A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101122130A (en) * | 2007-07-04 | 2008-02-13 | 广州市建筑科学研究院 | Construction method of drilling follow casting pile used for building or bridge foundation |
| CN101831906A (en) * | 2009-03-09 | 2010-09-15 | 钱圣德 | Dry type pneumatic rock drilling pile-driving machine and working method thereof |
| CN103089146A (en) * | 2013-01-23 | 2013-05-08 | 阎慧奎 | Engineering driller capable of conducting superfluid concrete grouting pile driving construction on hard rock strata |
| CN103244051A (en) * | 2013-05-11 | 2013-08-14 | 重庆卓典建设工程有限公司 | Combined down-hole hammer drilling tool and pile forming construction method thereof |
| CN111335306A (en) * | 2020-03-19 | 2020-06-26 | 中铁六局集团有限公司 | Rapid construction method for deep and thick hard rock section drilled pile |
Non-Patent Citations (1)
| Title |
|---|
| 刘海波: "空气泡沫潜孔锤钻进技术在大直径基岩", 《探矿工程( 岩土钻掘工程)》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293544A (en) * | 2021-12-31 | 2022-04-08 | 北京中岩大地科技股份有限公司 | Construction method for forming pile by drilling with hydraulic down-the-hole hammer |
| CN114809027A (en) * | 2022-04-20 | 2022-07-29 | 中国建筑土木建设有限公司 | Construction method of volcanic ash underground pile foundation |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20210618 |