CN205329702U - Building engineering foundation ditch precipitation is with from towards formula step -down well - Google Patents
Building engineering foundation ditch precipitation is with from towards formula step -down well Download PDFInfo
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- CN205329702U CN205329702U CN201620014228.0U CN201620014228U CN205329702U CN 205329702 U CN205329702 U CN 205329702U CN 201620014228 U CN201620014228 U CN 201620014228U CN 205329702 U CN205329702 U CN 205329702U
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- well casing
- well
- pressure reduction
- inlet pipe
- water inlet
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Abstract
The utility model discloses a building engineering foundation ditch precipitation is with from towards formula step -down well, including well casing and high -pressure water pipe, well casing lateral wall evenly distributed has the round hole, and the well casing wraps up 60 purpose nylon filter screens outward, and the well casing lateral wall is equipped with the opening, and the well casing lower extreme is equipped with toper portion, and toper troops under one's command end is equipped with the opening, high -pressure water inlet pipe advances water piping connection by plastics inlet tube and steel and constitutes, the opening that the subordinate end of toper was worn out downwards to well casing inside is followed to the steel inlet tube, and the steel inlet tube is worn out the toper troops under one's command and is held the partial upward welding of open -ended to have the blade. Compared with the prior art, the utility model the advantage be: being less than pressure -bearing water water level or producing the hole end when suddenly gushing when the ground elevation of digging a well before the construction, the filter material can be filled out after creeping into and reaching projected depth and clear hole to the wellhole, has saved and has pulled out drilling rod and mounting shaft plumber skill, has avoided collapsing the hole because of the wellhole and has led to the fact to install the well casing in the wellhole, simple structure, convenient to use, the practicality is very high, low cost, convenient operation, the security is good, and strong adaptability has better application prospect.
Description
Technical field
The present invention relates to pressure reduction well, particularly relate to a kind of architectural engineering pit precipitation self-punching type pressure reduction well。
Background technology
Artesian water precipitation is reduction artesian water head pressure in architectural engineering pit digging process, it is ensured that the effective means of deep pit monitor。In order to solve, artesian water head pressure in Excavation Process is excessive causes the prominent problem of gushing in the end, hole at present, and construction pressure reduction well extracts artesian water has become a kind of effective means reducing artesian water head pressure in Excavation Process。It can effectively reduce artesian water head pressure, makes in foundation pit construction process, it is ensured that the safety water head that artesian water head calculates lower than artesian water Stability Checking, meets excavation of foundation pit requirement。The pressure reduction well of prior art generally carries out wellbore construction before excavation of foundation pit, gets out wellhole by direct circulation water drilling method or reacting cycle water drilling method, guarantees wellhole not collapse hole by mud off。After wellbore depth reaches designed elevation, with concentration of hydraulic mixture in clear water dilution wellhole to designing requirement；Extract drilling rod, well casing is installed in wellhole, outside well casing, fills out medium coarse sand；In well casing, mounting shaft immersible pump draws water。
When but above-mentioned situation is only limitted to the front ground elevation of well-digging construction higher than artesian water water level, just can complete, before well-digging is constructed, ground elevation is lower than this situation of artesian water water level, get out in wellhole process by direct circulation water drilling method or reacting cycle water drilling method, under artesian pressure effect, artesian water mixing soil body granule (especially sand or silt granule) enters wellhole from surrounding soil, from wellhole outflow suitable for reading, cause wellhole collapse hole, after extracting drilling rod, cannot installing well casing in wellhole, pressure reduction well wellbore construction cannot complete。
Summary of the invention
The present invention is to solve above-mentioned deficiency, it is provided that a kind of architectural engineering pit precipitation self-punching type pressure reduction well。
The above-mentioned purpose of the present invention is realized by following technical scheme: a kind of architectural engineering pit precipitation self-punching type pressure reduction well, it is characterized in that: include well casing and high-pressure water pipe, described well casing sidewall is evenly distributed with circular hole, the nylon leaching net of described well casing outer wrapping 60 order, described well casing sidewall is provided with opening, described well casing lower end is provided with tapered portion, and tapered portion lower end is provided with opening；Described high-pressure intake pipe is connected and composed by plastics water inlet pipe and steel water inlet pipe, described steel water inlet pipe enters inside well casing from well casing sidewall opening, described steel water inlet pipe passes downwards the opening of tapered portion lower end inside well casing, and steel water inlet pipe passes and is welded with blade in the part of tapered portion lower ending opening。
Described well casing is the steel pipe of diameter 200mm。
Described well casing pipe thickness is 4mm。
Medium coarse sand is backfilled outside described nylon leaching net。
Described plastics water inlet pipe internal diameter is 50mm。
Described steel water inlet pipe internal diameter is 50mm。
Described blade is 4 pieces, in crossing distribution。
Described blade thickness is 4mm。
If well-digging position ground absolute altitude is lower than artesian water water level (when especially dash forward and gush in the generation end, hole) before well-digging construction, the soil body is inserted again vertically downward with crane well casing of slinging, inputting water under high pressure to diameter 50mm plastic tube, water under high pressure quickly flows out bottom diameter 50mm steel pipe；Well casing bottom blade cutting soil forms wellhole in conjunction with water under high pressure punching in the soil body, and water under high pressure is the water of the flowing that punching produces in the soil body, and the soil body under blade is cut goes out wellhole。When well casing is downwardly into the soil body, resistance increases to well casing stopping decline, upwards pull up well casing and be about 50cm, rotate to an angle and then insert still further below, it is repeatedly performed above operation, after wellbore depth reaches designed elevation, diluting concentration of hydraulic mixture in wellhole with clear water and, to designing requirement, fill out medium coarse sand outside well casing, in well casing, mounting shaft immersible pump draws water。
If well-digging position ground absolute altitude is lower than artesian water water level (when especially dash forward and gush in the generation end, hole) before well-digging construction, described self-punching type pressure reduction well of can constructing carries out artesian water and draws water。Artesian pressure can be adjusted as required。The present invention has simple in construction, easy to use, the advantages such as practicality is significantly high, with low cost。The present invention is easy to operate, and safety is good, and strong adaptability is easy to carry, has good application prospect。
Present invention advantage compared with prior art is:
(1) when well-digging construction before ground elevation lower than artesian water water level or have occurred and that cheat the end dash forward gush when, carry out self-punching type pressure reduction well wellbore construction, compared with conventional buck well construction technique, lack and extracted drilling rod then the process of well casing is installed, well casing will not be caused because of collapse hole to install smoothly。In well casing, mounting shaft immersible pump draws water, and effectively reduces artesian pressure (especially making dashes forward at the bottom of hole gushes stopping), it is ensured that excavation of foundation pit safety。
(2) present invention has simple in construction, easy to use, the advantages such as practicality is significantly high, with low cost。
(3) present invention is easy to operate, and safety is good, strong adaptability, has good application prospect。
Accompanying drawing explanation
Fig. 1 is the self-punching type pressure reduction well profilograph of the present invention；
Fig. 2 is the self-punching type pressure reduction well well casing position drawing in side sectional elevation of the present invention；
Fig. 3 is the self-punching type pressure reduction well blade position drawing in side sectional elevation of the present invention。
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail。
As shown in Figure 1 and Figure 2, a kind of architectural engineering pit precipitation self-punching type pressure reduction well, including well casing 1 and high-pressure water pipe 2, described well casing 1 sidewall is evenly distributed with circular hole 3, the nylon leaching net 4 of described well casing 1 outer wrapping 60 order, described well casing 1 sidewall is provided with opening 10, and described well casing 1 lower end is provided with tapered portion 5, and tapered portion 5 lower end is provided with opening 6；Described high-pressure intake pipe 2 is connected and composed by plastics water inlet pipe 2-1 and steel water inlet pipe 2-2, it is internal that described steel water inlet pipe 2-2 enters well casing 1 from well casing sidewall opening 10, described steel water inlet pipe 2-2 is from the internal opening 6 passing downwards tapered portion 5 lower end of well casing 1, and steel water inlet pipe 2-2 passes and is welded with blade 7 in the part of tapered portion lower ending opening 6。
Described well casing 1 is the steel pipe of diameter 200mm。Described well casing 1 pipe thickness is 4mm。The outer backfill medium coarse sand 9 of described nylon leaching net 4。Described plastics water inlet pipe 2-1 internal diameter is 50mm。Described steel water inlet pipe 2-2 internal diameter is 50mm。Described blade 7 is 4 pieces, in crossing distribution。Described blade 7 thickness is 4mm。
The operation principle of the present invention: if well-digging position ground absolute altitude is lower than artesian water water level (when especially dash forward and gush in the generation end, hole) before well-digging construction, with crane sling well casing 1 more vertically downward insert the soil body 8, inputting water under high pressure to diameter 50mm plastics water inlet pipe 2-1, water under high pressure quickly flows out bottom diameter 50mm steel water inlet pipe 2-2；Well casing 1 bottom blade 7 cutting soil washes away formation wellhole in conjunction with water under high pressure in the soil body 8, and water under high pressure washes away the water of the flowing of generation in the soil body 8, and the soil body 8 under blade 7 is cut goes out wellhole。When well casing 1 is downwardly into the soil body 8, resistance increases to well casing 1 stopping decline, upwards pull up well casing 1 about 50cm, rotate to an angle and then insert still further below, it is repeatedly performed above operation, after wellbore depth reaches designed elevation, diluting concentration of hydraulic mixture in wellhole with clear water and, to designing requirement, fill out medium coarse sand 9 outside well casing 1, in well casing 1, mounting shaft immersible pump draws water。
Power set can be increased, make well casing decline process can rotate continuously, to accelerate speed of application。
If well-digging position ground absolute altitude is lower than artesian water water level (when especially dash forward and gush in the generation end, hole) before well-digging construction, described self-punching type pressure reduction well of can constructing carries out artesian water and draws water。Artesian pressure can be adjusted as required。
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in the scope of patent protection of the present invention。
Claims (8)
1. an architectural engineering pit precipitation self-punching type pressure reduction well, it is characterized in that: include well casing and high-pressure water pipe, described well casing sidewall is evenly distributed with circular hole, the nylon leaching net of described well casing outer wrapping 60 order, described well casing sidewall is provided with opening, described well casing lower end is provided with tapered portion, and tapered portion lower end is provided with opening；Described high-pressure intake pipe is connected and composed by plastics water inlet pipe and steel water inlet pipe, described steel water inlet pipe enters inside well casing from well casing sidewall opening, described steel water inlet pipe passes downwards the opening of tapered portion lower end inside well casing, and steel water inlet pipe passes and is welded with blade in the part of tapered portion lower ending opening。
2. a kind of architectural engineering pit precipitation self-punching type pressure reduction well according to claim 1, it is characterised in that: described well casing is the steel pipe of diameter 200mm。
3. a kind of architectural engineering pit precipitation self-punching type pressure reduction well according to claim 1, it is characterised in that: described well casing pipe thickness is 4mm。
4. a kind of architectural engineering pit precipitation self-punching type pressure reduction well according to claim 1, it is characterised in that: backfill medium coarse sand outside described nylon leaching net。
5. a kind of architectural engineering pit precipitation self-punching type pressure reduction well according to claim 1, it is characterised in that: described plastics water inlet pipe internal diameter is 50mm。
6. a kind of architectural engineering pit precipitation self-punching type pressure reduction well according to claim 1, it is characterised in that: described steel water inlet pipe internal diameter is 50mm。
7. a kind of architectural engineering pit precipitation self-punching type pressure reduction well according to claim 1, it is characterised in that: described blade is 4 pieces, in crossing distribution。
8. a kind of architectural engineering pit precipitation self-punching type pressure reduction well according to claim 1, it is characterised in that: described blade thickness is 4mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620014228.0U CN205329702U (en) | 2016-01-08 | 2016-01-08 | Building engineering foundation ditch precipitation is with from towards formula step -down well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620014228.0U CN205329702U (en) | 2016-01-08 | 2016-01-08 | Building engineering foundation ditch precipitation is with from towards formula step -down well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205329702U true CN205329702U (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620014228.0U Expired - Fee Related CN205329702U (en) | 2016-01-08 | 2016-01-08 | Building engineering foundation ditch precipitation is with from towards formula step -down well |
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| CN (1) | CN205329702U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245661A (en) * | 2016-08-28 | 2016-12-21 | 神翼航空器科技（天津）有限公司 | Buried pipe and the method burying buried pipe underground thereof |
| CN106284388A (en) * | 2016-08-28 | 2017-01-04 | 神翼航空器科技（天津）有限公司 | Well casing and the method burying well casing underground thereof |
| CN106759409A (en) * | 2016-11-07 | 2017-05-31 | 中铁三局集团广东建设工程有限公司 | A kind of water-rich sand layer regional precipitation well construction method |
| CN106958255A (en) * | 2016-01-08 | 2017-07-18 | 孔祥瑞 | A kind of architectural engineering pit precipitation self-punching type pressure reduction well |
| CN109812223A (en) * | 2019-03-25 | 2019-05-28 | 五冶集团上海有限公司 | It is a kind of suitable for silt, the hole punched device of flour sand soil property and application method |
-
2016
- 2016-01-08 CN CN201620014228.0U patent/CN205329702U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958255A (en) * | 2016-01-08 | 2017-07-18 | 孔祥瑞 | A kind of architectural engineering pit precipitation self-punching type pressure reduction well |
| CN106245661A (en) * | 2016-08-28 | 2016-12-21 | 神翼航空器科技（天津）有限公司 | Buried pipe and the method burying buried pipe underground thereof |
| CN106284388A (en) * | 2016-08-28 | 2017-01-04 | 神翼航空器科技（天津）有限公司 | Well casing and the method burying well casing underground thereof |
| CN106245661B (en) * | 2016-08-28 | 2019-04-05 | 神翼航空器科技（天津）有限公司 | The method of buried pipe and its embedded buried pipe |
| CN106759409A (en) * | 2016-11-07 | 2017-05-31 | 中铁三局集团广东建设工程有限公司 | A kind of water-rich sand layer regional precipitation well construction method |
| CN106759409B (en) * | 2016-11-07 | 2019-02-26 | 中铁三局集团广东建设工程有限公司 | A kind of water-rich sand layer regional precipitation well construction method |
| CN109812223A (en) * | 2019-03-25 | 2019-05-28 | 五冶集团上海有限公司 | It is a kind of suitable for silt, the hole punched device of flour sand soil property and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20210108 |