Slurry circulating device for reverse circulation pile-forming construction of pile foundation in sand layer geological water area

Abstract

The utility model discloses a slurry circulating device for reverse circulation pile-forming construction of a pile foundation in a sand layer geological water area, which comprises a supporting mechanism, a slurry supplementing mechanism and a circulating mechanism, the slurry supplementing mechanism is arranged beside the supporting mechanism, the circulating mechanism is arranged on the supporting mechanism, and the slurry supplementing mechanism is connected with the circulating mechanism. The slurry supplementing mechanism can convey slurry to the circulating mechanism; the slurry circulating device for the reverse circulation pile-forming construction of the pile foundation in the sand layer geological water area improves economic benefits, effectively reduces the risk of slurry leakage, ensures that a construction site is clean and tidy, has small influence on the ecological environment, and solves the problems that in the prior art, due to the area limitation of a steel platform, slurry digging and loading and slurry pumping, discharging and outward transporting operations are prone to conflict; the problems that in the prior art, the safety risk is increased, the pile foundation hole forming speed is reduced, in the pile foundation first disc concrete pouring process, due to the fact that the slurry pumping and discharging amount is limited, slurry overflows out of a steel casing, the environment is prone to being polluted, and slurry circulation cannot be conducted scientifically, reasonably and efficiently are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction, in particular to a mud circulation device for pile foundation reverse circulation pile construction in sand layer geological waters. Background Art

[0002] In the prior art, the mud circulation system for pile foundation reverse circulation drilling construction in the sea area is composed of a mud box, a reverse circulation drilling rig, a steel casing, a mud pump installed in the steel casing, and arranged on a steel platform. During the drilling and hole cleaning process, the mud circulation system is limited by the area of ​​the steel platform, and the mud slag loading and mud pumping and transportation operations are prone to conflict, increasing safety risks and reducing the pile foundation drilling speed. During the first concrete pouring process of the pile foundation, due to the limitation of the mud pumping volume, the mud overflows the steel casing, which is easy to cause pollution to the environment, and the mud circulation cannot be carried out scientifically, reasonably and efficiently. Utility Model Content

[0003] The utility model aims to provide a mud circulation device for pile foundation reverse circulation pile construction in sandy geological waters, so as to solve the problems that the prior art easily causes environmental pollution and cannot carry out mud circulation scientifically, reasonably and efficiently.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mud circulation device for pile foundation reverse circulation pile construction in sandy geological waters, comprising:

[0005] Support mechanism;

[0006] a grouting mechanism, which is arranged beside the supporting mechanism, and

[0007] The circulation mechanism is arranged on the supporting mechanism, the grouting mechanism is connected with the circulation mechanism, and the grouting mechanism can transport the slurry to the circulation mechanism.

[0008] Preferably, the support mechanism comprises a steel trestle platform.

[0009] Preferably, the slurry replenishment mechanism comprises a slurry pool, and a slurry replenishment pump is provided on the slurry pool.

[0010] Preferably, the circulation mechanism includes a plurality of steel casings, which are arranged on a steel trestle platform, and steel pipes are connected between the plurality of steel casings, one of which is provided with a first mud pump with a pontoon that can be raised and lowered, and the steel casing provided with the first mud pump with a pontoon that can be raised and lowered is connected with a slurry supply pipe and a slurry discharge pipe, and one of the steel casings is connected with a mud box.

[0011] Preferably, the slurry discharge pipe is connected to a slurry replenishment pump.

[0012] Preferably, the grouting pipe is connected to the mud pool.

[0013] Preferably, a second liftable mud pump with a pontoon is further provided on the mud pool, and the second liftable mud pump with a pontoon is connected to a mud pumping and draining pipe.

[0014] Preferably, valves are provided on the slurry supply pipe and the slurry discharge pipe.

[0015] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0016] The mud circulation device for pile foundation reverse circulation pile construction in the sand geological water area can timely transport the mud to each pile foundation. The mud box only needs to be moved twice during the entire pier pile foundation construction process, which speeds up the construction progress, improves the construction efficiency, reduces the interference between equipment, and improves the utilization rate of the on-site working surface. It speeds up the on-site construction progress, improves the utilization rate of reverse circulation drilling rigs, cranes, crawler cranes, flatbed trucks, steel bar processing plants, etc., shortens the construction period, thereby saving the cost of mechanical equipment, improving economic benefits, and effectively reducing the risk of mud leakage, ensuring that the construction site is clean and tidy, with less impact on the ecological environment. It solves the problem that due to the limitation of the steel platform area in the prior art, the mud slag loading and mud pumping and transportation operations are prone to conflict, increasing safety risks and reducing the pile foundation drilling speed. During the first concrete pouring process of the pile foundation, due to the limitation of the mud pumping volume, the mud overflows the steel casing, which is easy to pollute the environment and cannot be scientifically, reasonably and efficiently circulated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0019] In the figure: 1. Support mechanism; 11. Steel trestle platform; 2. Grouting mechanism; 21. Mud pool; 22. Grouting pump; 3. Circulation mechanism; 31. Steel casing; 32. Steel pipe; 33. First pontoon liftable mud pump; 34. Grouting pipe; 35. Grouting pipe; 36. Mud box; 37. Drilling rig; 4. Second pontoon liftable mud pump; 5. Mud extraction and discharge pipe; 6. Valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 and Figure 2 As shown, a mud circulation device for pile foundation reverse circulation construction in sandy geological waters comprises a supporting mechanism 1, a grouting mechanism 2 and a circulation mechanism 3. The grouting mechanism 2 is arranged beside the supporting mechanism 1, and the circulation mechanism 3 is arranged on the supporting mechanism 1. The grouting mechanism 2 is connected to the circulation mechanism 3. The function of the grouting mechanism 2 is to transport the mud to the circulation mechanism 3, which speeds up the construction progress, improves the construction efficiency, reduces the interference between equipments, and improves the utilization rate of the on-site working surface. It speeds up the on-site construction progress, improves the utilization rate of the reverse circulation drilling rig 37, cranes, crawler cranes, flatbed trucks, steel bar processing plants, etc., shortens the construction period, thereby saving the cost of mechanical equipment, improving economic benefits, effectively reducing the risk of mud leakage, ensuring that the construction site is clean and tidy, and having less impact on the ecological environment.

[0022] Specifically, the supporting mechanism 1 includes a steel trestle platform 11, the grouting mechanism 2 includes a mud pool 21 and a grouting pump 22, and the grouting pump 22 is arranged on the mud pool 21. The circulation mechanism 3 includes a plurality of steel casings 31, a steel pipe 32, a first buoyancy-capable mud pump 33, a grouting pipe 34, a slurry discharge pipe 35, a mud box 36 and a drilling rig 37. The steel casing 31 is arranged on the steel trestle platform 11, and a plurality of steel casings 31 are connected with steel pipes 32. One of the steel casings 31 is provided with a first buoyancy-capable mud pump 33. A slurry pump 33 is provided with a steel casing 31 with a first buoyancy box liftable mud pump 33, which is connected to a grouting pipe 34 and a slurry discharge pipe 35, one of the steel casings 31 is connected to a mud box 36, a drilling rig 37 is provided next to the steel casing 31, the slurry discharge pipe 35 is connected to the grouting pump 22, the grouting pipe 34 is connected to the mud pool 21, and a second buoyancy box liftable mud pump 4 is also provided on the mud pool 21, the second buoyancy box liftable mud pump 4 is connected to a mud pumping and discharge pipe 5, and valves 6 are provided on the grouting pipe 34 and the slurry discharge pipe 35.

[0023] In the specific implementation process, according to the configuration of the drilling rig 37 and the daily pile-forming speed, a mud pool 21 of equal capacity is set up on land, a grouting pump 22 and a second buoyancy box liftable mud pump 4 for abandoning slurry are arranged in the pool, and mud conveying steel pipes are arranged on the steel trestle platform 11. There are two mud conveying steel pipes, namely a grouting pipe 34 and a grouting pipe 35. The grouting pipe 34 is connected to the grouting pump 22 in the mud pool 21, and the slurry outlet is arranged in the steel casing 31 group. When grouting, the grouting pump 22 in the mud pool 21 is started for grouting, and the outlet of the slurry discharge pipe 35 is arranged in the mud pool 21. This process is mud external circulation.

[0024] After the steel casing 31 is installed, a hole is cut on the steel casing 31, and a steel pipe 32 is welded to the steel casing 31 opening to form a connected group of steel casings 31. During the drilling, hole cleaning and pouring processes, mud can circulate in each steel casing 31. When the pile foundation is constructed to the pile position where the first buoyant box liftable mud pump 33 is provided, the first buoyant box liftable mud pump 33, the grouting pipe 34 and the slurry discharge pipe 35 are adjusted to the steel casing 31 of the completed pile position. The slurry box 36 is arranged at the last pile foundation construction site. The mud outlet on the mud box 36 is welded with an opening on the steel mud box and a steel pipe elbow, and the bolt sleeve cloth water pipe is connected to the steel casing 31 to prevent mud turbulence. The slurry outlet pipe of the reverse circulation drilling rig 37 is fixed on the mud box 36, and an elbow is provided at the slurry outlet to ensure that the mud is not discharged outside the steel casing. This process is the internal circulation of the mud.

[0025] The working process of the mud circulation system is as follows: Mud making and drilling: After the drilling mud is made in the onshore mud pool 21 of the external circulation system, the slurry pump 22 in the mud pool 21 is turned on, and the mud enters the steel casing 31 group through the mud conveying slurry steel pipe, and the mud in the steel casing 31 flows into the drilling steel casing 31 through the connecting steel pipe 32 between the steel casings 31, and then the pile foundation drilling operation is carried out;

[0026] Drilling: The mud in the drilling process is mainly in the internal circulation process, that is, the mud is discharged from the drilling reverse circulation drilling rig 37 → the platform mud box 36 → the steel casing 31 group → flows into the drilling steel casing 31 → the drilling reverse circulation drilling rig 37 discharges mud. When the mud in the drilling process does not meet the standard, the external circulation process is used to replenish the mud. When the mud is too thick and drilling is difficult during the drilling process, the first buoy of the internal circulation can be raised and lowered. The mud pump 33 is started, and the mud is discharged into the onshore mud pool 21 through the slurry discharge pipe 35, and water is added to adjust the mud. The mud residue generated during the drilling process is precipitated in the platform mud pool 21, and is processed by removing the residue and shipping it to the mud treatment center.

[0027] Hole cleaning: The mud discharge in the hole cleaning process is mainly an external circulation process, that is, hole cleaning and mud discharge → platform mud box 36 → steel casing 31 group → water addition in the steel casing 31 group → the second floating box can lift the mud pump 4 to discharge the mud → external circulation onshore mud pool 21 → mud is pumped out and shipped to the mud treatment center.

[0028] Concrete pouring: The mud discharge in the concrete pouring process is mainly an external circulation process. The first pontoon liftable mud pump 33 discharges mud in advance to form the first set of concrete pouring mud buffer steel casing 31 group → concrete pouring → the second pontoon liftable mud pump 4 continuously discharges mud → external circulation onshore mud pool 21 → mud is pumped out and shipped to the mud treatment center.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mud circulation device for pile foundation reverse circulation construction in sandy geological waters, characterized in that: include: Support mechanism (1); a grouting mechanism (2), the grouting mechanism (2) being arranged beside the supporting mechanism (1); and A circulation mechanism (3) is arranged on the supporting mechanism (1), the grouting mechanism (2) is connected to the circulation mechanism (3), and the grouting mechanism (2) can transport slurry to the circulation mechanism (3).

2. The mud circulation device for pile foundation reverse circulation construction in sandy geological waters according to claim 1 is characterized by: The support mechanism (1) comprises a steel trestle platform (11).

3. The mud circulation device for pile foundation reverse circulation construction in sandy geological waters according to claim 2 is characterized by: The slurry replenishment mechanism (2) comprises a slurry pool (21), and a slurry replenishment pump (22) is arranged on the slurry pool (21).

4. The mud circulation device for pile foundation reverse circulation construction in sandy geological waters according to claim 3 is characterized by: The circulation mechanism (3) comprises a plurality of steel casings (31), wherein the steel casings (31) are arranged on a steel trestle platform (11), and steel pipes (32) are connected between the plurality of steel casings (31), and a first mud pump (33) with a buoyancy box that can be raised and lowered is arranged on one of the steel casings (31), and the steel casing (31) provided with the first mud pump (33) with a buoyancy box that can be raised and lowered is connected to a grouting pipe (34) and a grouting pipe (35), and one of the steel casings (31) is connected to a mud box (36), and a drilling rig (37) is arranged next to the steel casing (31).

5. The mud circulation device for pile foundation reverse circulation construction in sandy geological waters according to claim 4 is characterized by: The slurry discharge pipe (35) is connected to the slurry replenishment pump (22).

6. The mud circulation device for pile foundation reverse circulation construction in sandy geological waters according to claim 4 is characterized by: The slurry replenishing pipe (34) is connected to the slurry pool (21).

7. The mud circulation device for pile foundation reverse circulation construction in sandy geological waters according to claim 3 is characterized by: The mud pool (21) is also provided with a second buoyancy-mounted liftable mud pump (4), and the second buoyancy-mounted liftable mud pump (4) is connected to a mud pumping and draining pipe (5).

8. The mud circulation device for pile foundation reverse circulation construction in sandy geological waters according to claim 4 is characterized by: Valves (6) are provided on the slurry supply pipe (34) and the slurry discharge pipe (35).

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