Cast-in-place pile pore-forming wall protection slurry system

Abstract

The utility model discloses a cast-in-place pile pore-forming wall protection slurry system, which relates to the technical field of cast-in-place pile construction and comprises a slurry pond for supplying circulating slurry to cast-in-place pile drilling. The system further comprises a stone powder sedimentation tank in the gravel processing system; the stone powder sedimentation tank provides slurry for the slurry tank; slurry in the stone powder sedimentation tank is conveyed to the slurry tank from the stone powder sedimentation tank; the stone powder sedimentation tank in a gravel processing system on a construction site is used as a slurry source, slurry in the stone powder sedimentation tank is introduced into a drilling well and a drilling hole for circulation, and the functional effects of pore forming and wall protecting are achieved and met; and the construction cost can be reduced, the purchasing uncertainty is reduced, and the economic benefit is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cast-in-place pile construction technology, specifically to the field of cast-in-place pile slurry technology, and particularly relates to a cast-in-place pile hole making and wall protecting slurry system. BACKGROUND

[0002] At present, the hole making wall protecting slurry used in cast-in-place pile construction is mainly one or both of clay slurry and bentonite slurry (also known as mud). Clay refers to soil with high content of clay particles, which is formed by weathering and decomposition of rocks on the surface of the earth, and belongs to hydrous aluminum silicate minerals, which is widely used in engineering. Bentonite is a non-metallic mineral product with montmorillonite as the main mineral component, which is widely used in agriculture, light industry, cosmetics, medicine and other fields. The clay or bentonite used in the hole making process of cast-in-place pile needs to be purchased from outside the site. Due to the different locations of engineering construction, the cost of clay or bentonite indirectly affects the cost of hole making of cast-in-place pile. Limited by the distance of purchase, the on-site prices of clay or bentonite are different, which has great uncertainty, which undoubtedly brings great difficulty to the engineering cost. Especially in remote areas, the cost of cast-in-place pile hole making engineering rises sharply. Therefore, there is an urgent need for a cast-in-place pile hole making wall protecting slurry system that can use construction site facilities and materials. UTILITY MODEL CONTENT

[0003] The utility model aims at solving the problems in the prior art, and provides a cast-in-place pile hole making wall protecting slurry system. The system can use facilities and materials in the construction area to replace traditional wall protecting mud, and use on-site materials for cast-in-place pile hole making construction, so as to reduce the construction cost and reduce the uncertainty brought by the production place of clay and bentonite to engineering construction. The system meets the hole making wall protecting function, saves engineering cost, and increases economic benefit.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A cast-in-place pile hole making wall protecting slurry system, which comprises a slurry pool for supplying circulating slurry to the drilling of cast-in-place pile; and a stone powder sedimentation pool in a sandstone processing system; the stone powder sedimentation pool provides slurry for the slurry pool; the slurry in the stone powder sedimentation pool is transported to the slurry pool by the stone powder sedimentation pool.

[0006] Further, a first mud pump is arranged at the slurry pool, the first mud pump transports slurry to the drilling machine through a first mud pipe, and a back slurry trench is arranged between the upper end of the drilling hole and the slurry pool.

[0007] Further, a second mud pump is arranged at the stone powder sedimentation pool, the second mud pump transports slurry to the slurry pool through a second mud pipe.

[0008] Further, a first stirring device is arranged at the slurry pool.

[0009] Further, the stone powder sedimentation tank is provided with a second stirring device.

[0010] Further, the slurry tank is provided with a water tank and a stone powder tank, and the water tank and the stone powder tank are respectively provided with first and second valves; the first and second valves are opened to supplement water and stone powder to the slurry tank.

[0011] Compared with the prior art, the present application has the beneficial effects that:

[0012] The present application takes the stone powder sedimentation tank in the construction site sandstone processing system as a slurry source, introduces the slurry in the stone powder sedimentation tank into the drilling and the borehole for circulation, realizes and meets the function effect of hole making and wall protection, and can reduce the construction cost, reduce the purchase uncertainty, and increase the economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The present application has the beneficial effects that:

[0014] In the figure: 1, slurry tank; 2, first mud pump; 3, first mud pipe; 4, back slurry ditch; 5, stone powder sedimentation tank; 6, second mud pump; 7, second mud pipe; 8, first stirring device; 9, first support; 10, second stirring device; 11, second support; 12, water tank; 13, first valve; 14, stone powder tank; 15, second valve; 16, drilling machine; 17, borehole. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application, that is, the described examples are only a part of the examples of the present application, but not all the examples. The components of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0016] It should be noted that the terms "first" and "second" and the like such relational terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0017] In the description of the utility model, unless another definite provision and limitation, the possible term " install " " link " " connection " should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements.For the person skilled in the art, the above-mentioned terms can be understood by the specific meaning in the utility model through specific circumstances.

[0018] In the description of the utility model, it is necessary to explain that, unless another definite provision and limitation, the possible term " be equipped with " should do the broad sense understanding, for example, " be equipped with " the object can be the part of the body, also can be arranged separately with the body and be connected on the body, and the connection can be detachable connection, also can be undetachable connection.For the person skilled in the art, the above-mentioned terms can be understood by the specific meaning in the utility model through specific circumstances.

[0019] The project engineering of a power station in the upper reaches of Jinshajiang river is located in a remote place, and the number of cast-in-place piles is huge, so that the procurement cost of cast-in-place pile mud is higher.But the stone powder slurry in the stone powder sedimentation tank of the wastewater treatment in the sandstone processing system in the construction site can be used as a wall protection slurry after research and test, which provides conditions for making the best use of things, turning waste into treasure and local material supply, and has high application value in the construction site of cast-in-place piles in mountainous areas, such as the stone powder sedimentation tank in the wastewater treatment process of large artificial sandstone plant in the invention patent with publication number CN101891312B and the stone powder sedimentation tank in the sandstone material processing wastewater recycling and coarse and fine aggregate stone powder recovery device of the utility model patent with publication number CN217794692U.Therefore, a cast-in-place pile hole making wall protection slurry system using a stone powder sedimentation tank is provided.The utility model is further described in detail in combination with embodiments.

[0020] The specific embodiment of the cast-in-place pile hole making wall protection slurry system provided by the utility model comprises:

[0021] Please refer to Figure 1 , the cast-in-place pile hole making wall protection slurry system comprises a slurry tank 1 for supplying circulating slurry to a cast-in-place pile drilling hole 17 and a stone powder sedimentation tank 5 in a sandstone processing system;The stone powder sedimentation tank 5 provides slurry for the slurry tank 1;The stone powder slurry in the stone powder sedimentation tank 5 is transported to the slurry tank 1 by the stone powder sedimentation tank 5, that is, the slurry in the slurry tank 1 is taken from the stone powder sedimentation tank 5.

[0022] For example Figure 1As shown, the slurry circulation state is positive circulation. The slurry pool 1 is provided with a first mud pump 2, which delivers the slurry to the drilling machine 16 through a first mud pipe 3. The slurry passes through the drill pipe and drill bit of the drilling machine 16, enters the bottom of the borehole 17, and then rises from the outside of the drill pipe in the borehole 17. A back slurry channel 4 is provided between the upper end of the borehole 17 and the slurry pool 1, and the slurry returns to the slurry pool 1 through the back slurry channel 4 to achieve circulation.

[0023] The stone powder settling pool 5 is provided with a second mud pump 6, which delivers the slurry to the slurry pool 1 through a second mud pipe 7. Before construction, there is no slurry in the slurry pool 1 and the borehole 17, and the second mud pump 6 delivers the unprecipitated stone powder liquid in the stone powder settling pool 5 as the slurry to the slurry pool 1. When the amount of slurry in the slurry pool 1 is sufficient, the second mud pump 6 stops delivering; when the amount of slurry in the slurry pool 1 is insufficient, the second mud pump 6 supplements the slurry to the slurry pool 1.

[0024] In order to ensure the uniformity of the slurry, the upper side of the slurry pool 1 is provided with a first support 9, and a first stirring device 8 is installed in the middle of the first support 9. The blades of the first stirring device 8 extend into the lower part of the slurry pool 1. The first stirring device 8 stirs when the slurry circulates, ensuring the uniformity of the slurry in the slurry pool 1. The upper side of the stone powder settling pool 5 is provided with a second support 11, and a second stirring device 10 is installed in the middle of the second support 11. The blades of the second stirring device 10 extend into the lower part of the stone powder settling pool 5. The second stirring device 10 stirs before and during the delivery of the slurry to the slurry pool 1, ensuring the uniformity of the slurry delivered to the slurry pool 1.

[0025] In the mud slurry specification for bored pile, the mud slurry has the following indexes: relative density is between 1-1.3; viscosity is generally 18-28 seconds; sand content is less than 5%. The density of the slurry in the stone powder settling pool 5 is not stable, sometimes it can meet the density requirement, and sometimes it cannot. Therefore, a water tank 12 and a stone powder tank 14 are provided at the slurry pool 1, which can be arranged on the upper side of the end of the first support 9 or beside the slurry pool 1. The water tank 12 stores water, and the stone powder tank 14 stores stone powder separated by waste water treatment of the stone processing system. The bottom of the water tank 12 and the stone powder tank 14 is respectively provided with a first valve 13 and a second valve 15; opening the first valve 13 and the second valve 15 respectively supplements water and stone powder to the slurry pool 1.

[0026] During construction, the performance of the stone powder slurry in the slurry pool 1 is detected not less than 5 times per shift, and the detection of slurry density requires 1.17-1.22 g / cm 3 , and the detection of sand content is generally 0%. When the requirements are not met, water or stone powder is added to adjust the slurry density.

[0027] During the construction process, the professional construction personnel have carried out many tests and detections. The stone powder slurry of the embodiment can replace the traditional wall protection slurry. According to the detection results of the clay and the stone powder, the particle analysis results and the slurry performance indexes, see Tables 1-3.

[0028] Table 1: Detection results of clay and stone powder

[0029]

[0030] Table 2: Particle analysis results of clay and stone powder

[0031]

[0032] Table 3: Performance indexes of new clay and stone powder slurry

[0033]

[0034]

[0035] According to the test results, the clay and the stone powder have similar particle analysis and chemical composition. Although the plasticity index detection result of the stone powder is less than the index required by the specification, according to the construction practice on site, the stone powder slurry can achieve the mud slurry wall protection effect during the pore making process, and the stone powder slurry can replace the clay slurry. At the same time, using the stone powder to replace the clay can not only reduce the waste of clay data, but also achieve the effect of waste recycling. Reducing the waste of clay resources can achieve the purpose of soil and water conservation, and can save the construction cost. According to the process statistics structure, the construction cost can be saved by about 78.3 yuan per meter of pore making.

[0036] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative labor, or make equivalent replacements to some technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A grouting system for bored pile drilling and wall protection, comprising a slurry tank (1) for supplying circulating slurry to bored pile holes (17); characterized in that: The invention also includes a stone powder sedimentation tank (5) in the sand and gravel processing system; the stone powder sedimentation tank (5) provides slurry for the slurry tank (1); and the slurry in the stone powder sedimentation tank (5) is transported from the stone powder sedimentation tank (5) to the slurry tank (1).

2. The bored pile hole-making and wall-protecting slurry system according to claim 1, characterized in that: A first mud pump (2) is provided at the slurry pool (1), and the first mud pump (2) transports slurry to the drilling rig (16) through a first mud pipe (3). A slurry return groove (4) is provided between the upper end of the borehole (17) and the slurry pool (1).

3. The bored pile hole-making and wall-protecting slurry system according to claim 1, characterized in that: A second mud pump (6) is provided at the stone powder sedimentation tank (5), and the second mud pump (6) transports the slurry to the slurry tank (1) through a second mud pipe (7).

4. The bored pile hole-making and wall-protecting slurry system according to claim 2, characterized in that: The slurry pool (1) is provided with a first stirring device (8).

5. The bored pile hole-making and wall-protecting slurry system according to claim 3 is characterized in that: The stone powder sedimentation tank (5) is provided with a second stirring device (10).

6. The bored pile hole-making and wall-protecting slurry system according to claim 2 or 4, characterized in that: The slurry pool (1) is provided with a water tank (12) and a stone powder tank (14), and the bottoms of the water tank (12) and the stone powder tank (14) are respectively provided with a first valve (13) and a second valve (15); the first valve (13) and the second valve (15) are opened to replenish water and stone powder to the slurry pool (1), respectively.

Images