Drilling slurry circulation construction method for occlusion cast-in-place pile of fish collecting tank of fish collecting system

Abstract

The invention discloses a drilling slurry circulation construction method for a fish collecting tank occlusion cast-in-place pile of a fish collecting system, which comprises the construction process of quickly discharging slurry in a slurry conveying pipeline and quickly releasing pressure by using the drilling slurry circulation construction method for the fish collecting tank occlusion cast-in-place pile of the fish collecting system. When a drill rod of the drilling machine needs to be shut down for a short time, the valve A is opened, the slurry pump continues to conduct pumping work, the relay pool is of an open structure and is zero in pressure, slurry in the slurry conveying pipeline is conveyed into the relay pool, and the situation that the slurry in the slurry conveying pipeline needs to be continuously conveyed into a cast-in-place pile hole and then circulates into the circulating pool is avoided; the discharging speed of the slurry in the slurry conveying pipeline is increased, so that the pressure of the slurry conveying pipeline can be quickly relieved.

Description

Technical Field

[0001] The invention relates to a drilling mud circulation construction method for a fish collecting trough bite cast-in-place pile of a fish collecting system, belonging to the technical field of water conservancy facility construction. Background Art

[0002] The fish collecting tank of the fish collecting system needs to be supported by interlocking cast-in-place piles, and the cast-in-place piles need to be bored in the rock and soil layer and then cast into shape. When drilling the cast-in-place piles, mud circulation is required to achieve the shaping of the cast-in-place pile holes.

[0003] In the existing bored pile drilling system, see Chinese patent publication number CN109882097A, the mud in the circulation pool is transported to the drill rod of the drilling rig through a slurry pipeline equipped with a mud pump. Although the slurry input can be achieved, when the drill rod needs to be stopped for a short time, the mud in the slurry pipeline can only be continuously transported to the bored pile hole and then circulated to the circulation pool, resulting in the slurry pipeline being unable to quickly release pressure. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a drilling mud circulation construction method for the bite cast-in-place piles of the fish collecting trough of the fish collecting system.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a method for drilling mud circulation construction of fish collecting system fish collecting tank bite cast-in-place piles, comprising:

[0007] The fish collecting system fish collecting trough bite cast-in-place pile drilling mud circulation construction method is used to achieve a construction process in which the mud in the slurry pipeline is quickly discharged and the pressure is quickly relieved.

[0008] The construction process includes:

[0009] Valve A and valve B are closed, and the mud pump pumps the slurry into the drill pipe of the drilling rig. The slurry enters from the top of the drill pipe and is discharged from the drill bit. When the drill bit rotates, it carries the slurry to shape and reinforce the bored pile hole. The excess slurry in the bored pile hole overflows from the top of the bored pile hole to the sedimentation tank for sedimentation and then passes to the circulation tank. The slurry prepared in the slurry preparation tank is passed to the circulation tank. After the slurry in the circulation tank is mixed, the mud pump works to transport the slurry through the slurry pipeline.

[0010] When the drill pipe of the drilling rig needs to be stopped for a short time, valve A is opened and the mud pump continues to pump. Since the relay tank is an open structure with zero pressure, the slurry in the slurry pipeline is transported to the relay tank, so that the slurry pipeline can be quickly depressurized;

[0011] When the drill pipe of the drilling rig continues to work, valve A is closed, valve B is opened, and the slurry in the relay pool is pumped into the drill pipe through the mud pump.

[0012] The drilling mud circulation construction method of the fish collecting system fish collecting tank bite cast-in-place piles comprises:

[0013] The bored pile holes that will later accommodate the bored piles;

[0014] A drilling rig, which is provided with a drill rod extending into the hole of the cast-in-place pile;

[0015] The top of the drill pipe is connected to a slurry delivery pipeline, and a mud pump for pumping slurry is installed in the middle of the slurry delivery pipeline;

[0016] It also includes a relay tank for accommodating the slurry in the slurry conveying pipeline, and the relay tank is an open structure and presents zero pressure.

[0017] A casing is installed on the top of the cast-in-place pile hole, and the casing supports and protects the top of the cast-in-place pile hole.

[0018] The bottom of the drill rod is provided with a drill bit, the interior of the drill rod is a hollow through hole, and the drill bit is provided with a slurry discharge through hole, and the slurry enters from the top of the drill rod and is discharged from the drill bit.

[0019] It also includes a sedimentation tank for accommodating overflow slurry, with a circulation tank and a pulping tank on the side of the sedimentation tank. The sedimentation tank is connected to the top of the bored pile hole through a slurry delivery pipe, and the circulation tank is connected to the sedimentation tank and the pulping tank through pipelines.

[0020] The circulation pool is equipped with a slurry delivery pipeline.

[0021] The relay pool is connected to the top of the drill pipe through valve A; the bottom of the relay pool is connected to the slurry pipeline at the inlet of the mud pump through valve B, and the side of the relay pool relative to valve A is connected to the circulation pool through valve C.

[0022] The beneficial effect of the present invention is that when the drill rod of the drilling rig needs to be stopped for a short time, valve A is opened and the mud pump continues to pump. Since the relay tank is an open structure and presents zero pressure, the slurry in the slurry pipeline is transported to the relay tank, avoiding the need for the mud in the slurry pipeline to be continuously transported to the cast-in-place pile hole and then circulated to the circulation tank, thereby increasing the mud discharge speed in the slurry pipeline and enabling the slurry pipeline to achieve rapid pressure relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a distribution schematic diagram of the present invention;

[0024] In the figure: 1- cast-in-place pile hole; 11- casing; 2- drilling rig; 21- drill rod; 22- drill bit; 3- sedimentation tank; 4- circulation tank; 5- slurry pipeline; 51- mud pump; 6- relay tank; 7- agitator; 61- valve A; 62- valve B; 63- valve C; 8- slurry preparation tank; 9- ground. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0026] like Figure 1 shown.

[0027] The present application discloses a method for drilling mud circulation construction of fish collecting system fish collecting tank bite cast-in-place piles, comprising:

[0028] A bored pile hole 1 is formed in the rock and soil layer of the construction environment, and a casing 11 is installed on the top of the bored pile hole 1. The casing 11 supports and protects the top of the bored pile hole 1.

[0029] The drill rig 2 is also included and installed on the ground 9 at the top of the bored pile hole 1. The drill rig 2 is provided with a drill rod 21 extending into the bored pile hole 1. A drill bit 22 is provided at the bottom of the drill rod 21. The interior of the drill rod 21 is a hollow through hole. The drill bit 22 is provided with a slurry discharge through hole. Slurry enters from the top of the drill rod 21 and is discharged from the drill bit 22. When the drill bit 22 rotates, it carries the slurry to shape and reinforce the bored pile hole 1.

[0030] It also includes a sedimentation tank 3 for accommodating overflowed slurry, and a circulation tank 4 and a pulping tank 8 are arranged on the side of the sedimentation tank 3. The sedimentation tank 3 is connected to the top of the bored pile hole 1 through a slurry delivery pipe, and the circulation tank 4 is connected to the sedimentation tank 3 and the pulping tank 8 through pipelines respectively. The slurry precipitated in the sedimentation tank 3 flows into the circulation tank 4, and the slurry prepared in the pulping tank 8 is delivered to the circulation tank 4.

[0031] The circulation pool 4 is provided with a slurry delivery pipeline 5 , which is connected to the top of the drill pipe 21 , and a mud pump 51 for pumping slurry is installed in the middle of the slurry delivery pipeline 5 .

[0032] It also includes a relay tank 6 for accommodating the slurry in the slurry delivery pipeline 5. The relay tank 6 is an open structure with zero pressure. The relay tank 6 is connected to the top of the drill pipe 21 through a valve A61. A stirrer 7 for stirring the slurry is installed on the relay tank 6. The stirrer 7 prevents the slurry in the relay tank 6 from solidifying.

[0033] The bottom of the relay pool 6 is connected to the slurry delivery pipeline 5 at the inlet of the mud pump 51 through a valve B62, and the side of the relay pool 6 opposite to the valve A61 is connected to the circulation pool 4 through a valve C63.

[0034] When the drill rod 21 of the drilling rig 2 needs to be shut down for a short time, the valve A61 is opened and the mud pump 51 continues to pump. Since the relay tank 6 is an open structure and presents zero pressure, the slurry in the slurry pipeline 5 is transported to the relay tank 6, avoiding the need for the mud in the slurry pipeline to be continuously transported to the bored pile hole and then circulated to the circulation tank, thereby increasing the mud discharge speed in the slurry pipeline and enabling the slurry pipeline to achieve rapid pressure relief.

[0035] The present application discloses a method for drilling mud circulation construction of fish collecting system fish collecting tank bite cast-in-place piles, comprising:

[0036] The valves A61 and B62 are closed, and the mud pump 51 pumps the slurry into the drill pipe 21 of the drilling rig 2. The slurry enters from the top of the drill pipe 21 and is discharged from the drill bit 22. When the drill bit 22 rotates, it carries the slurry to shape and reinforce the bored pile hole 1. The excess slurry in the bored pile hole 1 overflows from the top of the bored pile hole 1 to the sedimentation tank 3 for sedimentation and then passes to the circulation tank 4. The slurry is prepared in the slurry preparation tank 8 and passed to the circulation tank 4. After the slurry in the circulation tank 4 is mixed, the mud pump 51 works to transport the slurry through the slurry pipeline 5. When the drill pipe 21 of the drilling rig 2 needs to be shut down for a short time, the valve A61 is opened, and the mud pump 51 continues to pump. Since the relay pool 6 is an open structure with zero pressure, the slurry in the slurry pipeline 5 is transported to the relay pool 6, so that the slurry pipeline can achieve rapid pressure relief. The drilling mud circulation construction method using the fish collecting system fish collecting tank bite bored pile is realized, and the construction process of rapid discharge of mud in the slurry pipeline and rapid pressure relief is achieved.

[0037] When the drill pipe 21 of the drilling rig 2 continues to work, the valve A61 is closed, the valve B62 is opened, and the slurry in the relay pool 6 is pumped into the drill pipe 21 by the mud pump 51. The valve C63 is always in the open state, and the slurry in the relay pool 6 is transported to the circulation pool 4 when it is full.

Claims

1. A method for drilling mud circulation construction of fish collecting system fish collecting tank bite cast-in-place piles, characterized in that: include: The fish collecting system, fish collecting trough and interlocking cast-in-place pile drilling mud circulation distribution system are used to achieve a construction process in which the mud in the slurry pipeline is quickly discharged and the pressure is quickly relieved.

2. The method for drilling mud circulation construction of fish collecting system fish collecting tank bite cast-in-place piles as claimed in claim 1, characterized in that: The construction process includes: The valves A (61) and B (62) are closed, and the mud pump (51) pumps the slurry into the drill pipe (21) of the drilling rig (2). The slurry enters from the top of the drill pipe (21) and is discharged from the drill bit (22). When the drill bit (22) rotates, it carries the slurry to shape and reinforce the bored pile hole (1). The excess slurry in the bored pile hole (1) overflows from the top of the bored pile hole (1) to the sedimentation tank (3) and is then passed to the circulation tank (4). The slurry is prepared in the slurry preparation tank (8) and passed to the circulation tank (4). After the slurry in the circulation tank (4) is mixed, the mud pump (51) works to transport the slurry through the slurry delivery pipeline (5); When the drill pipe (21) of the drilling rig (2) needs to be stopped for a short time, the valve A (61) is opened, and the mud pump (51) continues to pump. Since the relay tank (6) is an open structure and presents zero pressure, the slurry in the slurry delivery pipeline (5) is transported to the relay tank (6), so that the slurry delivery pipeline can achieve rapid pressure relief; When the drill pipe (21) of the drilling rig (2) continues to work, the valve A (61) is closed, the valve B (62) is opened, and the slurry in the relay tank (6) is pumped into the drill pipe (21) through the mud pump (51).

3. The drilling mud circulation construction method of the fish collecting system fish collecting tank bite cast-in-place pile according to claim 1, characterized in that: include: A bored pile hole (1) for accommodating bored piles to be formed later; A drilling machine (2), wherein the drilling machine (2) is provided with a drilling rod (21) extending into the bored pile hole (1); The top of the drill pipe (21) is connected to a slurry delivery pipeline (5), and a slurry pump (51) for pumping slurry is installed in the middle of the slurry delivery pipeline (5); It also includes a relay pool (6) for accommodating the slurry in the slurry conveying pipeline (5); the relay pool (6) is an open structure and presents zero pressure.

4. The method for drilling mud circulation construction of fish collecting system fish collecting tank bite cast-in-place piles as claimed in claim 3, characterized in that: A casing (11) is installed on the top of the cast-in-place pile hole (1), and the casing (11) supports and protects the top of the cast-in-place pile hole (1).

5. The method for drilling mud circulation construction of fish collecting system fish collecting tank bite cast-in-place piles as claimed in claim 3, characterized in that: A drill bit (22) is provided at the bottom of the drill rod (21), the interior of the drill rod (21) is a hollow through hole, and a slurry discharge through hole is provided on the drill bit (22), so that slurry enters from the top of the drill rod (21) and is discharged from the drill bit (22).

6. The method for drilling mud circulation construction of fish collecting system fish collecting tank bite cast-in-place piles as claimed in claim 3, characterized in that: The invention also comprises a sedimentation tank (3) for accommodating overflow slurry, a circulation tank (4) and a slurry making tank (8) are provided on the side of the sedimentation tank (3), the sedimentation tank (3) is connected to the top of the bored pile hole (1) through a slurry delivery pipe, and the circulation tank (4) is connected to the sedimentation tank (3) and the slurry making tank (8) through pipelines.

7. The method for drilling mud circulation construction of fish collecting system fish collecting tank bite cast-in-place piles as claimed in claim 6, characterized in that: The circulation pool (4) is equipped with a slurry delivery pipeline (5).

8. The method for drilling mud circulation construction of fish collecting system fish collecting tank bite cast-in-place piles as claimed in claim 3, characterized in that: The relay pool (6) is connected to the top of the drill pipe (21) through a valve A (61); the bottom of the relay pool (6) is connected to the slurry delivery pipeline (5) at the inlet of the mud pump (51) through a valve B (62), and the side of the relay pool (6) relative to the valve A (61) is connected to the circulation pool (4) through a valve C (63).

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