Drilling device and method for geotechnical engineering construction

Abstract

The present invention relates to a drilling device for geotechnical engineering construction, which mainly includes a base, a fixed bracket and a drilling assembly. The drilling assembly is connected to the fixed bracket, and the fixed bracket is used to install the drilling assembly. The drilling assembly consists of an inner drill rod and an outer drill rod, and the inner drill rod is sleeved inside the outer drill rod and fixedly connected. The outer wall of the inner drill rod is provided with a spiral blade, and the spiral blade is used to transmit the mud generated during the drilling process upward. A crushing chamber is provided above the outer drill rod, and the mud enters the crushing chamber through the spiral blade. The present invention effectively improves the mud transportation efficiency and reduces the residence time through the design of the inner and outer drill rods and the rotation of the spiral blades. The setting of the crushing chamber and the crushing assembly ensures smooth discharge of the mud, which is particularly suitable for high-density or large-particle soil and rock. The device integrates drilling, transportation and crushing, simplifies the construction process, reduces the dependence on multiple equipment, improves the level of mechanization, and thus saves manpower and time costs.

Description

Technical Field

[0001] The invention belongs to the technical field of geotechnical engineering investigation, and specifically relates to a drilling device and a method for geotechnical engineering construction. Background Art

[0002] Geotechnical drilling refers to the technology of sampling and exploring geological media such as soil and rock by drilling holes. It is a commonly used geological exploration method, widely used in civil engineering, mineral exploration, environmental monitoring and other fields. The main purposes of geotechnical drilling include: obtaining samples of underground soil and rocks to test physical, chemical and mechanical properties and understand geological characteristics; studying underground structures, layers, lithology and hydrogeological conditions to provide a basis for engineering design; evaluating the stability and suitability of construction sites and reducing engineering risks; there are many methods of geotechnical drilling, the most common of which include impact drilling, rotary drilling and core drilling. Choosing appropriate drilling methods and equipment can effectively improve the accuracy and efficiency of exploration.

[0003] In the prior art, for example, the technical solution described in the patent with publication number CN117189001A is: a portable drilling device, which sends the extracted mud into between the first crushing member and the second crushing member. The two crushing members rotating in opposite directions can crush the block rock into particles, thereby effectively preventing the rock blocks from clogging the extraction passage of the mud pump.

[0004] In the prior art, mud is discharged by extraction. When the drilling distance is deep, the suction force of the mud pump is insufficient, and it is difficult to pump out the extended mud. In addition, when drilling with a hollow drill rod, when facing hard objects such as stones, the drill rod will be blocked, making it impossible to pump out the mud. Summary of the invention

[0005] The purpose of the present invention is to provide a drilling device and method for geotechnical engineering construction, so as to solve the problem that in the prior art mentioned in the background technology, there are insufficient pump suction and drill rod blockage, which limits the mud discharge efficiency during deep drilling.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A drilling device for geotechnical engineering construction comprises a base, a fixed bracket is arranged on the base, a drilling assembly is installed on the fixed bracket, and the drilling assembly is connected to the fixed bracket; the fixed bracket is used to install the drilling assembly; The drilling assembly includes a drill rod; wherein the drill rod includes an inner drill rod and an outer drill rod; the inner drill rod is sleeved inside the outer drill rod and fixedly connected to the outer drill rod; a spiral blade is arranged on the outer wall of the inner drill rod, and the drilled mud is transmitted upward through the spiral blade; A crushing chamber is arranged above the outer drill rod, one end of which is connected to the outer drill rod, and the mud is transmitted to the inside of the crushing chamber through the spiral blade, and the other end of the crushing chamber is connected to the pipeline, and the crushed mud is discharged through the pipeline; a crushing assembly is arranged inside the crushing chamber, and the mud is crushed by the crushing assembly to prevent the mud from clogging the discharge pipeline.

[0007] According to the above technical solution, the crushing assembly includes a first gear, a second gear, a first crushing column, a second crushing column and a connecting rod; wherein the first gear column and the first crushing column are arranged on the inner drill rod, the second gear is connected to the inner drill rod through the connecting rod, and the second gear is meshed with the first gear; the second gear is coaxially arranged with the second crushing column, and the second gear is used to drive the second crushing column to rotate; the first crushing column is meshed with the second crushing column.

[0008] According to the above technical solution, internal teeth meshing with the second crushing column are also provided on the inner wall of the crushing chamber. The second crushing column rotates and meshes with the first gear column and the inner wall of the crushing chamber respectively, so as to crush the mud in the crushing chamber.

[0009] According to the above technical solution, the drilling assembly also includes a mounting bracket, a sliding platform and a driving device; wherein the mounting bracket is connected to the fixed bracket, a sliding groove is arranged in the middle of the mounting bracket, and the sliding platform is slidingly arranged inside the sliding groove; the driving device is arranged above the sliding platform, and the drill rod assembly is arranged below the sliding platform and connected to the driving device.

[0010] According to the above technical solution, a hydraulic cylinder is arranged inside the mounting bracket, and the output end of the hydraulic cylinder is connected to the sliding platform to drive the sliding platform to move up and down.

[0011] According to the above technical solution, a blade is provided at the lower end of the outer drill rod, and the blade is used for cutting during drilling; a drilling part is provided at the lower end of the inner drill rod, and the lower end of the drilling part is inclined downward, and the upper end of the drilling part is fixedly connected to the inner drill rod, and the drilling part is used to break soil or stones.

[0012] According to the above technical solution, the inner drill rod is a hollow tube, a water inlet is provided at the upper end of the inner drill rod, and a water outlet is provided at the lower end of the inner rotating rod. During drilling, water is injected into the inner drill rod and discharged through the water outlet to dissipate heat for the blade and the drilling part, and to soak the soil and turn it into mud.

[0013] According to the above technical solution, a crushing head is also provided at the lower end of the spiral blade. When drilling, the crushing head is used to impact and crush the soil or stones drilled into the outer drill rod to prevent the whole piece of soil or stone from clogging the drill rod.

[0014] According to the above technical solution, a base plate is also provided below the mounting bracket, and a limiting assembly is provided on the base plate; the limiting assembly is used to limit the drill rod to prevent the drill rod from deviating during the drilling process.

[0015] A drilling method for geotechnical engineering construction, the method of using the drilling device comprises the following steps: Step S1, when in use, firstly pass water into the inner drill rod, so that the water flows downward along the inner drill rod and is discharged from the bottom of the inner drill rod to soak the soil; Step S2, start the driving device, drive the drill rod to rotate through the driving device, and drill the soil through the blade and the drilling part arranged at the bottom of the drill rod; push the drill rod downward through the hydraulic cylinder; and inject water into the borehole formed during drilling through an external water pipe to increase the formation rate of mud and reduce the resistance of drilling; Step S3, when drilling downward, the drilled mud or rocks are crushed by the provided crushing head, and the mud or rocks are discharged upward into the crushing chamber by the provided spiral blades; Step S4, the first gear in the crushing chamber rotates along with the inner drill rod, and the first gear drives the second gear to rotate, and the second gear drives the second crushing column to rotate, and the second crushing column is respectively engaged with the first crushing column and the inner wall of the crushing chamber to crush the soil or stone discharged into the crushing chamber; Step S5, the crushed mud is discharged through the discharge port.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, through the design of the inner and outer drill rods, combined with the rotation of the spiral blades, the mud generated during the drilling process can be effectively transported upward, reducing the residence time of the mud in the borehole and improving the drilling efficiency. The provided crushing chamber and crushing assembly can effectively crush the drilled mud, avoiding the blockage of the mud during the transportation process, thereby ensuring the smooth discharge of the mud. This is especially important for high-density or large-particle soils and rocks. The device in the present invention integrates drilling, transportation and crushing, simplifies the construction process, reduces dependence on multiple equipment, and improves the overall mechanization level of construction, thereby saving manpower and time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the crushing chamber of the present invention; Figure 3 This is a schematic diagram of the bottom structure of the drill pipe of the present invention; Figure 4 It is a schematic diagram of the partially enlarged structure of location A of the present invention.

[0018] Markings in the figure: 100-base, 200-fixed bracket, 300-inner drill rod, 400-outer drill rod, 500-spiral blade, 600-crushing chamber, 700-first gear, 800-second gear, 900-first crushing column, 110-second crushing column, 111-connecting rod, 112-mounting bracket, 113-sliding platform, 114-driving device, 115-hydraulic cylinder, 116-blade, 117-drilling part, 118-water inlet, 119-crushing head, 120-bottom plate, 121-discharge outlet, 122-limiting block, 123-limiting part, 124-through hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1 like Figure 1 As shown, a drilling device for geotechnical engineering construction includes a base 121, a fixed bracket 200 is arranged on the base 121, a drilling assembly is installed on the fixed bracket 200, and the drilling assembly is connected to the fixed bracket 200; the fixed bracket 200 is used to install the drilling assembly; The drilling assembly includes a drill rod; wherein the drill rod includes an inner drill rod 300 and an outer drill rod 400; the inner drill rod 300 is sleeved inside the outer drill rod 400 and is fixedly connected to the outer drill rod 400; a spiral blade 500 is provided on the outer wall of the inner drill rod 300, and the drilled mud is transmitted upward through the spiral blade 500; A crushing chamber 600 is provided above the outer drill rod 400, one end of the crushing chamber 600 is communicated with the outer drill rod 400, the mud is transmitted to the inside of the crushing chamber 600 through the spiral blade 500, the other end of the crushing chamber 600 is connected to the pipeline, and the crushed mud is discharged through the pipeline; a crushing assembly is provided inside the crushing chamber 600, and the mud is crushed by the crushing assembly to prevent the mud from clogging the discharge pipeline.

[0021] In the present invention, through the design of the inner and outer drill rods 400, combined with the rotation of the spiral blades 500, the mud generated during the drilling process can be effectively transported upward, reducing the residence time of the mud in the borehole and improving the drilling efficiency. The provided crushing chamber 600 and crushing assembly can effectively crush the drilled mud, avoiding the blockage of the mud during the transportation process, thereby ensuring the smooth discharge of the mud. This is especially important for high-density or large-particle soil and rock. The device in the present invention integrates drilling, transportation and crushing, simplifies the construction process, reduces the dependence on multiple equipment, and improves the overall mechanization level of the construction, thereby saving manpower and time costs.

[0022] Due to the setting of the internal crushing component, different types of soil and rock can be effectively processed, making the device more adaptable to various geological conditions.

[0023] By quickly transporting and crushing the mud, possible soil accumulation and blockage at the construction site are reduced, and safety hazards caused by equipment failure or mud accumulation are reduced.

[0024] Embodiment 2 This embodiment is a further refinement of the first embodiment.

[0025] like Figure 2 As shown, the crushing assembly includes a first gear 700, a second gear 800, a first crushing column 900, a second crushing column 110 and a connecting rod 111; wherein, the first gear 700 column and the first crushing column 900 are arranged on the inner drill rod 300, the second gear 800 is connected to the inner drill rod 300 through the connecting rod 111, and the second gear 800 is meshed with the first gear 700; the second gear 800 is coaxially arranged with the second crushing column 110, and is used to drive the second crushing column 110 to rotate; the first crushing column 900 is meshed with the second crushing column 110. The inner wall of the crushing chamber 600 is also provided with internal teeth meshed with the second crushing column 110, and the mud in the crushing chamber 600 is crushed by the rotation of the second crushing column 110 and the meshing with the first gear 700 column and the inner wall of the crushing chamber 600 respectively.

[0026] A specific implementation manner, during use, when the inner drill rod 300 rotates and drives the spiral blade 500 to rotate, mud is introduced from the borehole into the interior of the drill rod. Since a certain gap is left between the first crushing column 900 and the bottom of the crushing chamber 600, the mud can flow into the interior of the crushing chamber 600 from the gap, and the first gear 700 and the second gear 800 are engaged with each other, so that the second gear 800 drives the second crushing column 110 to rotate around the inner drill rod 300, and the mud in the crushing chamber 600 is crushed by the second crushing column 110, and finally the mud is discharged through the discharge port 121.

[0027] Further, such as Figure 2 As shown, the discharge port 121 is disposed at the upper end of the crushing chamber 600. When the slurry enters the crushing chamber 600 through the gap between the first crushing column 900 and the bottom of the crushing chamber 600, it is crushed into small pieces by the second crushing column 110 and then discharged from the discharge port 121 along with the slurry.

[0028] Furthermore, in order to prevent the mud from affecting the first gear 700 and the second gear 800, a gear protection cover needs to be provided to perform rotational sealing on the first gear 700 and the second gear 800.

[0029] The drilling assembly also includes a mounting bracket 112, a sliding platform 113 and a driving device 114; wherein the mounting bracket 112 is connected to the fixed bracket 200, a slide groove is arranged in the middle of the mounting bracket 112, and the sliding platform 113 is slidably arranged inside the slide groove; the driving device 114 is arranged above the sliding platform 113, and the drill rod assembly is arranged below the sliding platform 113 and connected to the driving device 114.

[0030] A hydraulic cylinder 115 is disposed inside the mounting bracket 112 , and an output end of the hydraulic cylinder 115 is connected to the sliding platform 113 for driving the sliding platform 113 to move up and down.

[0031] Furthermore, one end of the hydraulic cylinder 115 is fixed to the upper end of the mounting bracket 112, and the other end of the hydraulic cylinder 115 is connected to the sliding platform 113, so as to drive the sliding platform 113 to move. Through the arrangement of the hydraulic cylinder 115, when the drill rod is drilling downward, a downward force can be applied to the drill rod to keep the drill rod in contact with the soil, so that the drill rod can effectively drill the soil.

[0032] like Figure 3 As shown, a blade 116 is provided at the lower end of the outer drill rod 400, and the blade 116 is used for cutting during drilling; a drilling part 117 is provided at the lower end of the inner drill rod 300, and the lower end of the drilling part 117 is tilted downward, and the upper end of the drilling part 117 is fixedly connected to the inner drill rod 300, and the drilling part 117 is used to break soil or stones.

[0033] The blade 116 at the lower end of the outer drill rod 400 is mainly used to cut and break the surface material. During the drilling process, the blade 116 can effectively cut the soil, plant roots or other obstacles, thereby creating conditions for the drilling operation. The cutting process can reduce the drilling resistance, improve the drilling efficiency, and provide a smoother working environment for the drilling part 117 below.

[0034] The drilling part 117 at the lower end of the inner drill rod 300 is mainly used to break soil or rocks. It is usually designed to be more solid and effective, and can withstand greater pressure and impact. The drilling part 117 is often set at an angle, which can use gravity and the cutting force generated by the rotation of the drill rod to enhance the ability to break the ground and perform drilling operations more efficiently. The blade 116 and the drilling part 117 complement each other, aiming to improve drilling efficiency, ensure the smooth progress of drilling operations, and adapt to different geological conditions.

[0035] The inner drill rod 300 is a hollow tube, with a water inlet 118 provided at the upper end of the inner drill rod 300 and a water outlet hole provided at the lower end of the inner rotating rod. When drilling, water is injected into the inner drill rod 300 and discharged through the water outlet hole to dissipate heat for the blade 116 and the drilling part 117, and to wet the soil and turn it into mud.

[0036] Specifically, during the drilling process, the friction between the blade 116 and the drilling part 117 and the formation will generate a large amount of heat. Water injection can effectively reduce the temperature, thereby preventing the equipment from overheating. Through water flushing, the cut rock chips and soil can be removed from the borehole, keeping the borehole unobstructed and preventing blockage.

[0037] Water injection can wet the dry soil and gravel produced during the drilling process to form mud. This mud not only helps cool and lubricate, but also helps stabilize the borehole wall and prevent collapse.

[0038] A crushing head 119 is also provided at the lower end of the spiral blade 500. The crushing head 119 is used to impact and crush the soil or rocks drilled into the outer drill rod 400 during drilling to prevent the whole piece of soil or rocks from clogging the drill rod.

[0039] Specifically, the spiral blade 500 rotates with the rotation of the inner drill rod 300. Since the crushing head 119 is arranged to be tilted downward, as the drilling progresses, when mud or rocks broken by drilling begin to accumulate inside the inner drill rod 300, the rotating crushing head 119 crushes the rocks, which can effectively prevent the rocks from blocking the space between the inner drill rod 300 and the outer drill rod 400.

[0040] A bottom plate 120 is further provided below the mounting bracket 112 , and a limiting assembly is provided on the bottom plate 120 ; the limiting assembly is used to limit the drill rod to prevent the drill rod from deviating during the drilling process.

[0041] Specifically, the limiting assembly includes two limiting blocks 122, one end of which is provided with an arc-shaped limiting portion 123, and the two limiting portions 123 are combined to form a cylindrical limiting column, through which the drill rod is limited, and the other end of the limiting block 122 is rotatably connected to the bottom plate 120. A through hole 124 is provided in the middle of the bottom plate 120, and the drill rod passes through the through hole 124 for drilling.

[0042] The working principle of the present invention is as follows: when in use, water is first passed into the inner drill rod 300, so that the water flows downward along the inner drill rod 300 and is discharged from the bottom of the inner drill rod 300 to wet the soil; the driving device 114 is then started, the drill rod is driven to rotate by the driving device 114, and the soil is drilled by the blade 116 and the drilling part 117 arranged at the bottom of the drill rod; the drill rod is pushed downward by the hydraulic cylinder 115; and water is injected into the borehole formed during drilling through an external water pipe to increase the formation rate of mud and reduce the resistance of drilling; when drilling downward, the crushing head 119 is arranged The drilled mud or rocks are crushed, and discharged upward into the interior of the crushing chamber 600 through the spiral blades 500; the first gear 700 in the crushing chamber 600 rotates along with the inner drill rod 300, and the first gear 700 drives the second gear 800 to rotate, and the second gear 800 drives the second crushing column 110 to rotate, and the second crushing column 110 engages with the first crushing column 900 and the inner wall of the crushing chamber 600 respectively, so as to crush the soil or rocks discharged into the crushing chamber 600; the crushed mud is discharged through the discharge port 121.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. 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 these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drilling device for geotechnical engineering construction, characterized in that: It comprises a base (100), a fixed bracket (200) is arranged on the base (100), a drilling assembly is installed on the fixed bracket (200), and the drilling assembly is connected to the fixed bracket (200); the fixed bracket (200) is used to install the drilling assembly; The drilling assembly comprises a drill rod; wherein the drill rod comprises an inner drill rod (300) and an outer drill rod (400); the inner drill rod (300) is sleeved inside the outer drill rod (400) and fixedly connected to the outer drill rod (400); a spiral blade (500) is arranged on the outer wall of the inner drill rod (300), and the drilled mud is transmitted upwards through the spiral blade (500); A crushing chamber (600) is arranged above the outer drill rod (400), one end of the crushing chamber (600) is communicated with the outer drill rod (400), mud is transmitted to the inside of the crushing chamber (600) through the spiral blade (500), the other end of the crushing chamber (600) is connected to the pipeline through the discharge port (121), and the crushed mud is discharged through the pipeline; a crushing assembly is arranged inside the crushing chamber (600), and the mud is crushed by the crushing assembly to prevent the mud from clogging the discharge pipeline.

2. A drilling device for geotechnical engineering construction according to claim 1, characterized in that: The crushing assembly comprises a first gear (700), a second gear (800), a first crushing column (900), a second crushing column (110) and a connecting rod (111); wherein the first gear (700) column and the first crushing column (900) are arranged on an inner drill rod (300), the second gear (800) is connected to the inner drill rod (300) through the connecting rod (111), and the second gear (800) is meshed with the first gear (700); the second gear (800) and the second crushing column (110) are coaxially arranged, and the second gear (800) drives the second crushing column (110) to rotate; the first crushing column (900) is meshed with the second crushing column (110).

3. A drilling device for geotechnical engineering construction according to claim 2, characterized in that: Internal teeth meshing with the second pulverizing column (110) are also provided on the inner wall of the pulverizing chamber (600). The second pulverizing column (110) rotates and meshes with the first gear (700) column and the inner wall of the pulverizing chamber (600) respectively, thereby pulverizing the mud in the pulverizing chamber (600).

4. A drilling device for geotechnical engineering construction according to claim 3, characterized in that: The drilling assembly further comprises a mounting bracket (112), a sliding platform (113) and a driving device (114); wherein the mounting bracket (112) is connected to the fixed bracket (200), a sliding groove is arranged in the middle of the mounting bracket (112), and the sliding platform (113) is slidingly arranged inside the sliding groove; the driving device (114) is arranged above the sliding platform (113), and the drill rod assembly is arranged below the sliding platform (113) and connected to the driving device (114).

5. A drilling device for geotechnical engineering construction according to claim 4, characterized in that: A hydraulic cylinder (115) is arranged inside the mounting bracket (112), and an output end of the hydraulic cylinder (115) is connected to the sliding platform (113) for driving the sliding platform (113) to move up and down.

6. A drilling device for geotechnical engineering construction according to claim 5, characterized in that: A blade (116) is arranged at the lower end of the outer drill rod (400), and the blade (116) is used for cutting during drilling; a drilling portion (117) is arranged at the lower end of the inner drill rod (300), and the lower end of the drilling portion (117) is arranged to be inclined downward, and the upper end of the drilling portion (117) is fixedly connected to the inner drill rod (300), and the drilling portion (117) is used for breaking soil or stones.

7. A drilling device for geotechnical engineering construction according to claim 6, characterized in that: The inner drill rod (300) is a hollow tube. A water inlet (118) is arranged at the upper end of the inner drill rod (300), and a water outlet is arranged at the lower end of the inner rotating rod. During drilling, water is injected into the inner drill rod (300) and discharged through the water outlet to dissipate heat for the blade (116) and the drilling part (117), and to wet the soil into mud.

8. A drilling device for geotechnical engineering construction according to claim 7, characterized in that: A crushing head (119) is also provided at the lower end of the spiral blade (500). The crushing head (119) is used to impact and crush the soil or stone drilled into the outer drill rod (400) during drilling, so as to prevent the whole piece of soil or stone from clogging the drill rod.

9. The drilling device for geotechnical engineering construction according to claim 1, characterized in that: A bottom plate (120) is also provided below the mounting bracket (112), and a limit assembly is provided on the bottom plate (120); the limit assembly is used to limit the drill rod to prevent the drill rod from deviating during the drilling process.

10. A drilling method for geotechnical engineering construction, characterized in that: Using the drilling device according to any one of claims 1 to 9, the method for using the drilling device comprises the following steps: Step S1, when in use, firstly, water is passed into the inner drill rod (300), so that the water flows downward along the inner drill rod (300) and is discharged from the bottom of the inner drill rod (300), so as to wet the soil; Step S2, starting the driving device (114), driving the drill rod to rotate through the driving device (114), and drilling the soil through the blade (116) and the drilling part (117) arranged at the bottom of the drill rod; pushing the drill rod downward through the hydraulic cylinder (115); and injecting water into the borehole formed during drilling through an external water pipe to increase the formation rate of mud and reduce the resistance of drilling; Step S3, when drilling downward, the drilled mud or rocks are crushed by the crushing head (119), and the mud or rocks are discharged upward into the crushing chamber (600) by the spiral blades (500); Step S4, the first gear (700) in the crushing chamber (600) rotates along with the inner drill rod (300), and the first gear (700) drives the second gear (800) to rotate, and the second gear (800) drives the second crushing column (110) to rotate, and the second crushing column (110) is respectively engaged with the first crushing column (900) and the inner wall of the crushing chamber (600), so as to crush the soil or stone discharged into the crushing chamber (600); Step S5, the crushed slurry is discharged through the discharge port (121).

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