CN114183069A - Pile group drilling construction method for efficiently utilizing mud slurry - Google Patents
Pile group drilling construction method for efficiently utilizing mud slurry Download PDFInfo
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- CN114183069A CN114183069A CN202111492861.2A CN202111492861A CN114183069A CN 114183069 A CN114183069 A CN 114183069A CN 202111492861 A CN202111492861 A CN 202111492861A CN 114183069 A CN114183069 A CN 114183069A
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- 238000005553 drilling Methods 0.000 title claims abstract description 59
- 239000002002 slurry Substances 0.000 title claims abstract description 57
- 238000010276 construction Methods 0.000 title claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 238000001556 precipitation Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000004064 recycling Methods 0.000 claims abstract description 3
- 238000004062 sedimentation Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 13
- 239000013049 sediment Substances 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 239000002689 soil Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- E21B7/00—Special methods or apparatus for drilling
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides a pile group drilling construction method for efficiently utilizing mud slurry in a circulating manner, which comprises the following steps of before drilling construction, respectively burying a steel casing on each pile position, and respectively forming a mud deposit and a storage pool above each pile position by the steel casing; then, according to the hole sites of the grouped piles, the adjacent steel pile casings are sequentially communicated through a communicating pipe to form a single slurry flowing loop; during construction, three pile positions connected in sequence are used as a group for construction; and after the drilling machine at the pile position A drills in place, the slurry mixture of the residue soil and the slurry generated by the drill bit is discharged to the pile position C for precipitation, the slurry and the residue soil at the pile position C flow back to the pile position B through the communicating pipe for further precipitation to form slurry, and then the slurry continuously flows back to the pile position A to serve as drilling wall protection slurry. The invention can effectively form mud recycling in pile foundation drilling, solves the problem of high difficulty in mud treatment in traditional drilling pile construction, does not need to independently dig a larger mud pit, and avoids mud environmental pollution and water resource waste.
Description
Technical Field
The invention relates to the technical field of building foundations, in particular to a pile group drilling construction method capable of recycling mud efficiently.
Background
The construction of civil construction engineering can not be separated from foundation construction, the group pile foundation transfers the load to the soil layer with good bearing performance deeper underground so as to meet the requirements of bearing capacity and settlement, the foundation is the deep foundation form which is the most widely applied in China, and the cast-in-situ bored pile construction also becomes an important content of civil construction in China.
During the process of drilling, the drill bit processes the crushed mud into slurry, high-pressure mud is pumped by a mud pump in a positive and cyclic mode, the mud is fed into the bottom of the drill bit through a central pipe of the drilling machine and is forcibly ejected out, the mud is mixed with the crushed mud which is cut into slurry, the mud is carried to move upwards along the hole wall, and the mud is discharged into a sedimentation tank dug on site from an overflow hole of the pile casing. The reverse circulation mud flow is opposite to the forward circulation route.
The conventional slurry dado pore-forming pile needs to be dug on site to form a larger slurry sedimentation tank, so that the requirement on the field space is met, a large amount of muck is accumulated, the pile needs to be backfilled when the pile is finished, and a large amount of manpower and material resources are wasted; meanwhile, a large amount of slurry is generated in the process, the treatment difficulty is high, and the slurry is directly discharged, so that the environmental pollution is caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing a pile group drilling construction method for efficiently utilizing mud in a circulating manner so as to avoid the problems of high site space requirement, large consumption of manpower and material resources and serious environmental pollution caused by the adoption of a large mud sedimentation tank during construction by adopting a conventional method.
The invention adopts the following technical scheme to solve the technical problems:
a pile group drilling construction method for efficiently utilizing mud slurry in a circulating manner is characterized in that a steel casing is buried in each pile position before formal pile group drilling construction, and a mud slurry sediment and storage pool are formed above each pile position by the steel casing; then, according to the hole sites of the pile group, the adjacent steel pile casings are sequentially communicated through a communicating pipe, so that the adjacent steel pile casings are mutually connected in series to form a single slurry flowing loop; during drilling construction, three pile positions which are connected in sequence are used as a group for construction; in the construction process, after the drilling machine at the pile position A drills in place, the slurry mixture of the dregs and the slurry generated by the drill bit is discharged to the pile position C for precipitation, the slurry and the dregs at the pile position C flow back to the pile position B connected with the pile position C through the communicating pipe for further precipitation to form slurry, and then the slurry continuously flows back to the pile position A connected with the pile position B to serve as drilling wall protection slurry.
In a preferred mode of the invention, the bottom of the steel casing on each pile position extends downwards along the pile diameter, and the top of the steel casing is higher than the ground or the water surface by a certain distance so as to form enough space for a mud sedimentation tank.
In a preferred mode of the invention, the top of the steel casing is 0.3m higher than the ground or 1-2m higher than the water surface.
As one of the preferable modes of the invention, the position on each steel casing, which is connected with the communicating pipe, is also provided with a switch type baffle respectively; the switch type baffle is used for opening or cutting off a slurry flow channel, so that slurry is prevented from overflowing to a pile position in the other direction, and the slurry is ensured to flow back to a specified drilling hole position.
In a preferable mode of the invention, in the construction process, aiming at the condition that the pile position mud possibly exists in a short time, a movable mud settling tank which is additionally arranged can be adopted for emergency matching, so that the mud is prevented from leaking.
In a preferred embodiment of the present invention, the pile-piling drilling construction method with efficient mud circulation includes the following steps:
s1, embedding a protection tube: measuring the central point of each pile position, embedding a steel casing and digging downwards along the diameter of the pile to form enough space for a mud sedimentation tank;
s2, the protective sleeve is connected in series: welding a connecting pipeline between the steel casing cylinders;
s3, positioning a drilling machine: preparing to drill a pile position A, selecting a pile position B and a pile position C used for precipitation, and closing a switch type baffle close to the outer side on the pile position C, so as to prepare for slurry backflow; positioning a drilling machine;
s4, drilling and deslagging: for a positive circulation drilling machine, a drill bit rotates to generate drill slag, the drill slag is suspended by mud and overflows along with the rise of the mud to a B pile position to be used as primary sediment, then the mud flows into a C pile position, and mud liquid at the C pile position is adopted at a mud inlet of the positive circulation drilling machine;
for a reverse circulation drilling machine, slurry is discharged from a slurry outlet of a drill bit to a pile position C to be used as primary sedimentation, and clear slurry is overflowed through the sedimentation of a pile position B and enters a pile position A to be used as a slurry retaining wall;
s5, finishing construction: after the drilling construction of the pile position A is finished, closing the switch type baffle on the steel pile casing of the pile position A, cleaning the hole in time, and performing subsequent construction;
s6, constructing the next pile position: selecting a next pile position for drilling, and selecting two adjacent pile positions on one side of the drilled pile position for mud sedimentation; subsequently, the above steps S4 to S5 are repeated.
Compared with the prior art, the invention has the advantages that:
(1) the method has the advantages that the required material process is simple, extra labor is not needed, the characteristics of the drilling pile drilling machine are fully utilized, the traditional externally-placed mud pit is dispersed to multi-pile-position sediment, a longer serial mud circulation loop is formed, the sediment effect is good, and the usability of the wall protection mud is ensured;
(2) the invention does not need to separately dig a larger mud pit, avoids a large amount of manpower and material resource loss caused by digging the mud pit, and also avoids the environmental damages of earthwork accumulation and mud leakage caused by using the mud pit; in addition, the invention recycles the mud generated in the operation of the pile machine, thereby realizing the best use of things and avoiding the waste of water resources caused by artificial slurry making; meanwhile, the total consumption of the slurry and the treatment capacity of the waste slurry are reduced, the labor intensity of field operation is reduced, and the environmental pollution is reduced; in addition, the mud purification and separation of the invention adopts a physical principle, thereby avoiding secondary pollution of chemicals.
Drawings
Fig. 1 is a diagram showing arrangement of pile positions and structural matching among a steel casing, a communicating pipe, and an opening/closing type shield in each pile position in example 1 (A, B, C, D, E, F, G, H, I, J, K, L in the drawing indicates each pile position, respectively);
FIG. 2 is a schematic diagram showing the overall structural matching and mud circulation process in the construction of the pile position A in the embodiment 1;
fig. 3 is a structural display diagram at the pile position a in the process of drilling the pile position a in embodiment 1.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Example 1
The pile group drilling construction method for efficiently utilizing mud in the embodiment comprises the following specific steps of:
s1, embedding a protection tube:
before formal construction drilling of pile groups, measuring and placing the central point of each pile position, and embedding a steel casing on each pile position respectively; the bottom of the steel casing extends downwards along the pile diameter, and the top of the steel casing is 0.3m higher than the ground or 1-2m higher than the water surface, so that enough space is formed. The steel casing mainly plays a role in guiding and protecting the wall of the hole, and meanwhile, a small mud deposit and storage pool is formed above each pile position.
S2, series connection of protective cylinders and installation of switch type baffles:
referring to fig. 1, according to the hole sites of the pile groups, a communicating pipe is welded between the adjacent steel casing, and the steel casing at each pile site are sequentially communicated through the communicating pipe, so that the steel casing at each pile site are mutually connected in series to form a single slurry flowing loop. Wherein, the pile positions are marked as A, B, C, D, E, F, G, H, I, J, K, L pile positions in sequence according to a certain direction, and a switch type baffle is respectively arranged at the position of each steel casing connected with the communicating pipe. Here, the switch type baffle is used for opening or cutting off a slurry flow channel, so that slurry is prevented from overflowing to a pile position in the other direction, and the slurry is ensured to flow back to a designated drilling hole position.
S3, positioning a drilling machine:
preparing to drill a pile position A, selecting two adjacent pile positions on one side of the pile position A for mud precipitation, namely selecting a pile position B (positioned between the pile position A and the pile position C) and a pile position C (the outermost pile position of the three pile positions), and closing a switch type baffle plate close to the outer side on the pile position C to prepare for mud backflow (see fig. 2); the drill is then in place (as shown in figure 3).
S4, drilling and deslagging:
for a positive circulation drilling machine, a drill bit rotates to generate drill slag, the drill slag is suspended by mud and overflows along with the rise of the mud to a B pile position to be used as primary sediment, then the mud flows into a C pile position, and mud liquid at the C pile position is adopted at a mud inlet of the positive circulation drilling machine.
For a reverse circulation drilling machine, slurry is discharged from a slurry outlet of a drill cone to a pile position C to be used as primary sedimentation, and clear slurry is overflowed through the sedimentation of the pile position B and enters a pile position A to be used as a slurry retaining wall (the circulation process is shown in figure 2).
S5, finishing construction:
and after the drilling construction of the pile position A is finished, closing the switch type baffle on the steel pile casing of the pile position A, cleaning the hole in time, and then performing subsequent construction.
S6, constructing the next pile position:
according to the sequence of A, B, C, D, E, F, G, H, I, J, K, L pile positions, sequentially selecting the next pile position for drilling, and selecting two adjacent pile positions on the single side of the corresponding drilling pile position for mud sedimentation; for example, when a pile position B is constructed, C, D pile positions are selected for mud sedimentation; when the pile position C is constructed, D, F pile positions are selected for mud sedimentation, and the rest is done; when the construction is carried out to the K pile positions, the number of the right pile positions is less than two, and J, I on the left side of the right pile positions can be selected for mud sedimentation; the same is true when constructing the L pile position.
And repeating the steps S4-S5 when all the components are ready.
In addition, it should be noted that, aiming at the condition that the pile position mud possibly exists in the construction process in a short time, an additionally arranged movable mud settling tank can be adopted for emergency matching, and the mud is prevented from leaking.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A pile group drilling construction method for recycling mud is characterized in that a steel pile casing is buried in each pile position before formal pile group drilling, and a mud sediment and storage pool is formed above each pile position by the steel pile casing; then, according to the hole sites of the pile group, the adjacent steel pile casings are sequentially communicated through a communicating pipe, so that the adjacent steel pile casings are mutually connected in series to form a single slurry flowing loop; during drilling construction, three pile positions which are connected in sequence are used as a group for construction; in the construction process, after the drilling machine at the pile position A drills in place, the slurry mixture of the dregs and the slurry generated by the drill bit is discharged to the pile position C for precipitation, the slurry and the dregs at the pile position C flow back to the pile position B connected with the pile position C through the communicating pipe for further precipitation to form slurry, and then the slurry continuously flows back to the pile position A connected with the pile position B to serve as drilling wall protection slurry.
2. The pile-drilling construction method for mud circulation high efficiency according to claim 1, wherein the bottom of the steel casing at each pile site extends downward along the pile diameter and the top thereof is higher than the ground or water surface by a certain distance.
3. The pile group drilling construction method for mud circulation high efficiency according to claim 2, wherein the top of the steel casing is 0.3m higher than the ground or 1-2m higher than the water surface.
4. The pile group drilling construction method for efficiently utilizing the mud according to claim 1, wherein a switch type baffle is further arranged at the position, connected with the communicating pipe, of each steel casing; the on-off shutter is used to open or shut off the slurry flow path.
5. The pile-group drilling construction method for efficiently utilizing mud according to claim 1, wherein in the construction process, if mud appears at one position in short time in individual pile positions, an additionally arranged movable mud settling tank is adopted for emergency matching.
6. The pile group drilling construction method for efficiently utilizing mud according to any one of claims 1 to 5, which is characterized by comprising the following specific steps of:
s1, embedding a protection tube: measuring the central point of each pile position, embedding a steel casing and digging downwards along the diameter of the pile to form enough space for a mud sedimentation tank;
s2, the protective sleeve is connected in series: welding a connecting pipeline between the steel casing cylinders;
s3, positioning a drilling machine: preparing to drill a pile position A, selecting a pile position B and a pile position C used for precipitation, and closing a switch type baffle close to the outer side on the pile position C, so as to prepare for slurry backflow; positioning a drilling machine;
s4, drilling and deslagging: for a positive circulation drilling machine, a drill bit rotates to generate drill slag, the drill slag is suspended by mud and overflows along with the rise of the mud to a B pile position to be used as primary sediment, then the mud flows into a C pile position, and mud liquid at the C pile position is adopted at a mud inlet of the positive circulation drilling machine;
for a reverse circulation drilling machine, slurry is discharged from a slurry outlet of a drill bit to a pile position C to be used as primary sedimentation, and clear slurry is overflowed through the sedimentation of a pile position B and enters a pile position A to be used as a slurry retaining wall;
s5, finishing construction: after the drilling construction of the pile position A is finished, closing the switch type baffle on the steel pile casing of the pile position A, cleaning the hole in time, and performing subsequent construction;
s6, constructing the next pile position: selecting a next pile position for drilling, and selecting two adjacent pile positions on one side of the drilled pile position for mud sedimentation; subsequently, the above steps S4 to S5 are repeated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111492861.2A CN114183069A (en) | 2021-12-08 | 2021-12-08 | Pile group drilling construction method for efficiently utilizing mud slurry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111492861.2A CN114183069A (en) | 2021-12-08 | 2021-12-08 | Pile group drilling construction method for efficiently utilizing mud slurry |
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| CN114183069A true CN114183069A (en) | 2022-03-15 |
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| CN202111492861.2A Pending CN114183069A (en) | 2021-12-08 | 2021-12-08 | Pile group drilling construction method for efficiently utilizing mud slurry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114541993A (en) * | 2022-03-17 | 2022-05-27 | 中建八局第一建设有限公司 | Totally-enclosed multistage sedimentation underground mud pit device and construction method |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541993A (en) * | 2022-03-17 | 2022-05-27 | 中建八局第一建设有限公司 | Totally-enclosed multistage sedimentation underground mud pit device and construction method |
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