Water withdrawable lead hole machine and static pressure pile construction method

Abstract

The application discloses a water-pumpable hole leading machine, which comprises a base and a drill rod, the drill rod is rotatable relative to the base, the drill rod is movable along the vertical direction relative to the base, the bottom of the drill rod is provided with a drill tooth, the drill rod is in a cylindrical shape, the drill rod is provided with an inner cavity, a water pumping hole is formed in the bottom side wall of the inner cavity of the drill rod, the inner cavity of the drill rod is used for connecting a water pumping device, a water injection pipe is arranged in the inner cavity of the drill rod, the water outlet end of the water injection pipe is arranged at the bottom of the drill rod, and the water injection pipe is used for injecting water into the bottom of the drill rod. The static pressure pile construction method adopts the static pressure pile machine and the water-pumpable hole leading machine, and comprises the following steps: a hole turning step, in which the drill rod is used for drilling a hole in the ground to form a hole; a water pumping step, in which the water pumping device is started in the process of drilling the hole, so that the inner cavity of the drill rod forms a negative pressure, thereby pumping out the underground water in the soil layer region of the hole; a water injection step, in which the water injection pipe is used for injecting water into the bottom of the drill rod; and a pile pressing step, in which the static pressure pile machine is used for pressing the static pressure pile into the preset hole formed in the water shortage region in the process of water pumping by the hole leading machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hole leading machines, in particular to a water-pumpable hole leading machine and a static pressure pile construction method. BACKGROUND

[0002] A hole leading machine is used for drilling a hole, which can be used for pressing a static pressure pile in the hole later. Figure 1 In some construction areas, there is underground water. After the hole is drilled, the pressure formed by the underground water acts on the sidewall of the hole, which narrows the inner diameter of the hole. Thus, in the process of pressing the pile into the hole later, there is a large friction force between the pile and the sidewall of the hole, and a large pressure is needed to press the engineering pile into the hole. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, one of the purposes of the present application is to provide a water-pumpable hole leading machine, which can form a temporary water shortage area in the soil area, thereby reducing the pressure on the inner wall of the drilled hole. The second purpose of the present application is to provide a static pressure pile construction method, which can make the pressing process of the static pressure pile more smooth, thereby improving the work efficiency.

[0004] The purposes of the present application are achieved by adopting the following technical solutions:

[0005] The water-pumpable hole leading machine comprises a base and a drill rod, the drill rod is rotatable relative to the base, the drill rod is vertically movable relative to the base, the bottom of the drill rod is provided with drill teeth, the drill rod is in a cylindrical shape, the drill rod is provided with an inner cavity, the inner cavity of the drill rod is provided with a water pumping hole in the bottom sidewall, the inner cavity of the drill rod is used for connecting a water pumping device, the inner cavity of the drill rod is provided with a water injection pipe, the water outlet end of the water injection pipe is arranged at the bottom of the drill rod, and the water injection pipe is used for injecting water into the bottom of the drill rod.

[0006] Specifically, the water outlet end of the water pumping device is used for connecting a movable water pool, the water inlet end of the water injection pipe is used for connecting a pressurizing device, and the water inlet end of the pressurizing device is used for connecting the movable water pool.

[0007] Specifically, a centrifugal filter is connected between the water pumping device and the movable water pool.

[0008] Specifically, the inner cavity bottom sidewall of the drill rod is provided with a plurality of water pumping holes, and the water pumping holes are arranged along the circumference of the drill rod.

[0009] Specifically, the bottom of the drill rod is provided with a thickened layer.

[0010] Specifically, the bottom of the drill rod is provided with a plurality of rows of drill teeth, and each row of drill teeth is arranged from the center position of the bottom of the drill rod to the edge position of the bottom.

[0011] The static pressure pile construction method adopts the static pressure pile machine and the water-pumpable hole guide machine, and comprises the following steps:

[0012] The hole drilling step: the drill rod drills a hole in the ground to form a hole guide;

[0013] The water pumping step: during the hole drilling process, the water pumping device is started to form a negative pressure in the inner cavity of the drill rod, so that the underground water in the hole drilling soil layer area is pumped out to form a temporary water shortage area in the hole drilling soil layer area;

[0014] The water injection step: the water injection pipe injects water to the bottom of the drill rod;

[0015] The pile pressing step: during the water pumping process of the hole guide machine, the static pressure pile machine presses the static pressure pile into the preformed hole in the water shortage area.

[0016] Specifically, the water outlet end of the water pumping device is connected with the movable water pool, the water inlet end of the water injection pipe is connected with the pressurizing device, and the water inlet end of the pressurizing device is connected with the movable water pool.

[0017] Specifically, a centrifugal filter is connected between the water pumping device and the movable water pool.

[0018] Specifically, the inner cavity bottom side wall of the drill rod is provided with a plurality of water pumping holes, and the water pumping holes are arranged along the circumference of the drill rod.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] Firstly, the drill rod drills a hole in the soil layer, and the bottom of the drill rod is provided with a plurality of rows of drill teeth, each row of drill teeth is arranged from the center position of the bottom of the drill rod to the edge position of the bottom, so that the drilling efficiency is higher. The drill rod can drill through the obstacles such as boulders existing in the area. During the hole drilling process of the drill rod, the water pumping device works to form a negative pressure in the inner cavity of the drill rod, so that the underground water in the soil layer is pumped away, thereby forming a temporary water shortage area in the soil layer area. After the drill rod completes the drilling of the hole guide in the above-mentioned water shortage area, the static pressure pile machine immediately presses the pile in the drilled hole guide. Since the drilled hole guide is in the above-mentioned water shortage area, the inner wall of the drilled hole guide is not subjected to the pressure action of the underground water, so that the degree of narrowing of the inner wall is lower. Therefore, during the pile pressing process of the static pressure pile machine in the drilled hole guide, the friction between the static pressure pile and the inner wall of the drilled hole guide is smaller, so that the static pressure pile can be pressed into the drilled hole guide with smaller power, and the pressing process is more smooth, thereby improving the work efficiency.

[0021] In the process of drilling with the drill rod, the water pumping device pumps water, the pumped water is filtered by the centrifugal filter and then enters the movable water pool. The water in the movable water pool enters the pressurizing device, the pressurizing device pressurizes the water and then delivers the high-pressure water to the water injection pipe, so that the high-pressure water is sprayed from the bottom of the drill rod, thereby washing away the soil and sand at the bottom of the drill rod and cooling the bottom of the drill rod. The water pumped by the water pumping device is filtered and then enters the pressurizing device, so that the underground water can be recycled, thereby improving the construction efficiency and saving water resources. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a hole pressing state view of the prior art static pile press;

[0023] Figure 2 is a semi-cut view of the drill rod;

[0024] Figure 3 is a bottom view of the drill rod;

[0025] Figure 4 is a system connection view of the hole guide and related equipment;

[0026] Figure 5 shows the static pile press and the hole guide, wherein the hole guide has formed a temporary water deficiency area in the soil layer area.

[0027] In the figure: 1, drill rod; 11, drill bit; 12, inner cavity; 13, water pumping hole; 14, thickened layer; 2, water injection pipe; 3, static pile press; 4, static pile; 5, hole guide. DETAILED DESCRIPTION

[0028] Hereinafter, the present application will be further described in conjunction with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments without conflict.

[0029] See Figures 2 to 5 The water-pumpable hole guide 5 comprises a base and a drill rod 1, the drill rod 1 is rotatable relative to the base, the drill rod 1 is vertically movable relative to the base, the bottom of the drill rod 1 is provided with a drill bit 11, and the drill rod 1 can drill downward. The drill rod 1 is in a cylindrical shape, the drill rod 1 is provided with an inner cavity 12, and the inner cavity 12 of the drill rod 1 is provided with a water pumping hole 13 in the bottom side wall. The inner cavity 12 of the drill rod 1 is used to connect a water pumping device (not shown in the figure), and the inner cavity 12 of the drill rod 1 is provided with a water injection pipe 2, the water outlet end of the water injection pipe 2 is arranged at the bottom of the drill rod 1, and the water injection pipe 2 is used to inject water to the bottom of the drill rod 1.

[0030] Specifically, the water outlet end of the water pumping device is used to connect a movable water pool (not shown in the figure), the water inlet end of the water injection pipe 2 is used to connect a pressurizing device (not shown in the figure), and the water inlet end of the pressurizing device is used to connect the movable water pool.

[0031] Specifically, a centrifugal filter is connected between the pumping device and the movable water tank.

[0032] Specifically, the bottom side wall of the inner cavity 12 of the drill rod 1 is provided with a plurality of water extraction holes 13, and each water extraction hole 13 is arranged along the circumference of the drill rod 1.

[0033] Specifically, a thickening layer 14 is provided at the bottom of the drill pipe 1.

[0034] Specifically, the bottom of the drill rod 1 is provided with multiple rows of drill teeth 11, and each row of drill teeth 11 is arranged from the center of the bottom of the drill rod 1 to the bottom edge.

[0035] The static pressure pile construction method, employing a static pressure pile driver 3 and the aforementioned pumpable pre-drilling machine 5, is characterized by including the following steps:

[0036] Drilling steps: Drill rod 1 drills a hole in the ground to form a pilot hole;

[0037] Pumping steps: During the drilling process, the pumping device is activated, which creates a negative pressure in the inner cavity 12 of the drill rod 1, thereby pumping out the groundwater in the borehole soil layer area and creating a temporary water-deficient area in the borehole soil layer area.

[0038] Water injection procedure: Water is injected into the bottom of drill rod 1 through water injection pipe 2;

[0039] Piling steps: During the water pumping process of the pre-drilling machine 5, the static pile driver 3 presses the static pile 4 into the pre-formed hole in the water-deficient area.

[0040] The specific process of the static pressure pile construction method of the present invention is as follows:

[0041] First, drill rod 1 drills into the soil layer. The bottom of drill rod 1 has multiple rows of drill teeth 11, arranged from the center of the bottom of drill rod 1 towards the bottom edge, resulting in higher drilling efficiency. Drill rod 1 will penetrate obstacles such as boulders in the area. During drilling, a pumping device operates, creating negative pressure inside the cavity 12 of drill rod 1, thereby drawing away groundwater from the soil layer and creating a temporary water-deficient area. Figure 5 (Area A). After drill rod 1 completes drilling the pilot hole in the aforementioned water-deficient area, static pile driver 3 immediately performs pile driving on the drilled pilot hole. Because the drilled pilot hole is located in the aforementioned water-deficient area ( Figure 5 In area A), the inner wall of the drilled pilot hole is not subjected to the pressure of groundwater, so the narrowing of its inner wall is relatively small. Therefore, during the process of the static pressure pile driver 3 driving the pile into the drilled pilot hole, the friction between the static pressure pile 4 and the inner wall of the drilled pilot hole is small. Thus, the static pressure pile 4 can be driven into the drilled pilot hole with less power, and the driving process is smoother, thereby improving the work efficiency.

[0042] In the process of drilling the drill rod 1, the water pumping device pumps water, the pumped water is filtered through the centrifugal filter and enters the movable water pool. Moreover, the water in the movable water pool enters the pressurizing device, the pressurizing device pressurizes the water and delivers the water to the water injection pipe 2, so that the high-pressure water is sprayed from the bottom of the drill rod 1, thereby washing away the soil and sand at the bottom of the drill rod 1 and cooling the bottom of the drill rod 1. The water pumped by the water pumping device is filtered and enters the pressurizing device, so that the underground water can be recycled, thereby improving the construction efficiency and saving water resources.

[0043] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the protection scope of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the protection scope of the present application.

Claims

1. A method for construction of a jacked pile using a jacking machine and a hole guide machine capable of pumping water, characterized in that, The water-sucking hole machine comprises a base and a drill rod, the drill rod is rotatable relative to the base, the drill rod is vertically movable relative to the base, the bottom of the drill rod is provided with a drill tooth, the drill rod is in a cylindrical shape, the drill rod is provided with an inner cavity, the inner cavity bottom sidewall of the drill rod is provided with a water-sucking hole, the inner cavity of the drill rod is used for connecting a water-sucking device, the inner cavity of the drill rod is provided with a water injection pipe, the water injection pipe water outlet end is arranged at the bottom of the drill rod, and the water injection pipe is used for injecting water to the bottom of the drill rod; further comprising a movable water pool, and the water-sucking device water outlet end and the movable water pool are connected with a centrifugal filter; A static pressure pile construction method, comprising the following steps: A drilling step: the drill rod drills a hole in the ground to form a hole; A water-sucking step: in the process of drilling, the water-sucking device is started to form a negative pressure in the inner cavity of the drill rod, so that the underground water in the drilled soil layer area is sucked out to form a temporary water shortage area in the drilled soil layer area; A water injection step: the water injection pipe injects water to the bottom of the drill rod; A pile pressing step: in the process of water sucking of the hole machine, the static pressure pile machine is pressed into the static pressure pile in the formed hole in the water shortage area.

2. The method according to claim 1, characterized in that: The water injection pipe water inlet end is used for connecting a pressurizing device, and the pressurizing device water inlet end is used for connecting the movable water pool.

3. The method according to claim 2, wherein: The inner cavity bottom sidewall of the drill rod is provided with a plurality of water-sucking holes, and the water-sucking holes are arranged along the circumference of the drill rod.

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