Inclined water nail pipe installation construction method

Abstract

The invention relates to the technical field of water nailing pipe installation, in particular to an inclined water nailing pipe installation construction method which comprises the following steps that S1, a streamline solid pipe cap is installed at the front end of a PVC pipe, and a steel pipe is inserted into the PVC pipe; s2, the pneumatic impactor is connected with the built-in steel pipe through an inner-layer steel pipe structure and an outer-layer steel pipe structure; s3, the PVC pipe is positioned on the slope surface of the slope protection according to the design angle, and the slope angle of 15 degrees is kept; s4, the pneumatic impacter is started, the PVC pipe is pushed into the slope body to the designed depth along the upward inclination angle, and then the built-in steel pipe is pulled out. According to the upward inclination type water nailing pipe installation construction method, the streamline solid pipe cap is installed at the front end of the PVC pipe, the built-in steel pipe is arranged in the pipe body, and the inner-layer steel pipe structure and the outer-layer steel pipe structure of the pneumatic impacter are combined; and the construction stability of the PVC pipe under the elevation angle propelling condition is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water nail pipe installation, in particular to a construction method for installing an upwardly inclined water nail pipe. BACKGROUND

[0002] Water nail pipe, capillary drainage pipe installation, PVC drainage pipe installation, and other upwardly inclined pipe installation are usually used in slope protection, slope and foundation pit engineering, and their main function is to provide a drainage channel for the internal slope, thereby reducing the pore water pressure of the slope and improving the overall stability of the slope. The existing water nail pipe and capillary drainage pipe installation, PVC drainage pipe installation, and other upwardly inclined pipe installation construction methods mostly use horizontal or slightly inclined angle pushing methods. In the case of large changes in slope angle or limited space conditions, the direction of water nail pipe and capillary drainage pipe installation, PVC drainage pipe installation is often restricted, and it is difficult to achieve the upwardly inclined angle of incidence according to the design requirements.

[0003] At the same time, since the water nail pipe and capillary drainage pipe installation, PVC drainage pipe installation itself has low rigidity, it is easy to bend, deviate or deform during the process of pushing into the internal slope, which makes the construction reliability insufficient under complex stratum conditions. In order to improve the pushing ability, the existing technology mostly uses steel pipes or drill rods for impact pushing, but the use of steel pushing tools alone may cause the PVC pipe and the pushing device to be out of axis, thereby causing pipe body damage or installation deviation.

[0004] In addition, when the pushing direction is upwardly inclined, the conventional positioning support cannot stably maintain the pushing angle, and the axis of the pneumatic impactor and the axis of the pipe body are also difficult to keep consistent, so that the PVC pipe is easy to deviate during the pushing process, affecting the final drainage direction of the water nail pipe and the construction quality.

[0005] Therefore, the existing technology still has deficiencies in upwardly inclined water nail pipe installation, stable transmission of impact force, prevention of PVC pipe deviation, control of positioning angle, etc., and there is an urgent need for a construction method that is simple in structure, reliable in positioning, stable in pushing, and suitable for upwardly inclined water nail pipe installation. SUMMARY

[0006] The purpose of the present application is to solve the problems in the prior art that the water nail pipe and capillary drainage pipe installation, PVC drainage pipe installation itself has low rigidity, which is easy to bend, deviate or deform during the process of pushing into the internal slope, making the construction reliability insufficient under complex stratum conditions, the use of steel pushing tools alone may cause the PVC pipe and the pushing device to be out of axis, thereby causing pipe body damage or installation deviation, when the pushing direction is upwardly inclined, the conventional positioning support cannot stably maintain the pushing angle, and the axis of the pneumatic impactor and the axis of the pipe body are also difficult to keep consistent, so that the PVC pipe is easy to deviate during the pushing process, affecting the final drainage direction of the water nail pipe and the construction quality.

[0007] To achieve the above object, the present application provides the following technical solutions.

[0008] The present application provides a kind of water nail pipe installation construction method of inclined, comprising the following steps:

[0009] S1, installing streamline solid pipe cap at the front end of PVC pipe, and inserting steel pipe in the interior of PVC pipe;

[0010] S2, the wind impactor is connected with built-in steel pipe by the inner and outer two layers of steel pipe structure;

[0011] S3, the PVC pipe is positioned on the slope surface according to the design angle, so that it keeps 15 ° of inclined angle;

[0012] S4, start wind impactor, make PVC pipe along the inclined angle to the inside of slope and advance to the design depth, then pull out the built-in steel pipe.

[0013] The technical effect of the above further scheme is: by combining streamline pipe cap, built-in steel pipe, wind impactor connection structure and inclined angle advancing mode to form complete construction process, PVC water nail pipe can enter the inside of slope stably and controllably under inclined angle, improve the implementability of water nail pipe installation.

[0014] Further, in step S1, the step of installing streamline solid pipe cap at the front end of PVC pipe and inserting steel pipe in the interior of PVC pipe includes: fixing and installing streamline solid material pipe cap matched with the outer diameter of the PVC pipe at the front end of PVC pipe, so that the outer shape of the pipe cap presents smooth transition curved surface along the axial direction.

[0015] The technical effect of the above further scheme is: by using streamline solid pipe cap matched with the outer diameter of PVC pipe, the resistance of PVC pipe front end is reduced when entering the slope body, which is beneficial to improve the advancing smoothness and reduce the risk of front end deformation.

[0016] Further, in step S1, steel pipe matched with the inner diameter of the PVC pipe is selected, and the steel pipe is inserted to the predetermined position along the interior of the PVC pipe, so that the axis of the steel pipe is consistent with the axis of the PVC pipe.

[0017] The technical effect of the above further scheme is: by selecting steel pipe matched with the inner diameter of PVC pipe and keeping the axis consistent, the impact force transmission path is stable and consistent, which helps to avoid the deviation or torsion of PVC pipe during advancing.

[0018] Further, in step S2, the step of connecting the wind impactor to the inner steel pipe through the inner and outer steel pipe structure comprises: providing a connecting sleeve at the tail of the wind impactor, fixing one end of the outer steel pipe in the connecting sleeve; and setting the inner steel pipe inside the outer steel pipe and sleeving them along the axial direction.

[0019] The technical effect of the above further scheme is that the connection between the impactor and the inner steel pipe is more reliable by using the connecting sleeve at the tail of the wind impactor and adopting the inner and outer steel pipe sleeving structure, so as to realize stable transition of impact force.

[0020] Further, in step S2, the front end of the inner steel pipe is connected to the steel pipe inside the PVC pipe by a screw type clamping sleeve, so that the axial impact force of the wind impactor can be transmitted along the axial direction of the inner and outer steel pipes and the inner steel pipe.

[0021] The technical effect of the above further scheme is that the impact force can be effectively transmitted to the steel pipe inserted into the PVC pipe by providing a screw type clamping sleeve at the front end of the inner steel pipe, thereby improving the utilization rate of impact energy and improving the propulsion capacity.

[0022] Further, in step S3, the step of positioning the PVC pipe on the slope surface at a designed angle to keep an inclination angle of 15° comprises: providing a positioning support for guiding on the slope surface, the positioning support comprising a base, an adjustable inclination angle support rod and a pipe body clamping device.

[0023] The technical effect of the above further scheme is that the PVC pipe can be accurately positioned at a specified inclination angle before construction by providing a positioning support with a base, an adjustable inclination angle support rod and a clamping device, thereby improving the control accuracy of the incident direction.

[0024] Further, in step S3, the pipe body clamping device is used to fix the PVC pipe, and the adjustable inclination angle support rod is adjusted to the designed angle by a locking member and locked to keep the PVC pipe coaxially positioned along the designed angle before propulsion.

[0025] The technical effect of the above further scheme is that the PVC pipe maintains a stable posture during propulsion by using the adjustable inclination angle support rod and the locking member to keep a fixed angle, thereby avoiding deviation and ensuring the consistency of the construction angle.

[0026] Further, in step S4, the step of starting the wind impactor to push the PVC pipe into the slope body along the inclination angle to a designed depth and then pulling out the inner steel pipe comprises: continuously keeping the axis of the wind impactor consistent with the axis of the PVC pipe during propulsion, and the tail end of the wind impactor is provided with a limiting assembly.

[0027] The technical effect of the further scheme is that the eccentric impact is avoided, and the straightness of pushing and the construction stability are improved by keeping the axis of the impactor consistent with the axis of the PVC pipe and by restricting the impact position through the tail end limiting assembly.

[0028] Further, in step S4, the impact stroke is restricted through the limiting assembly arranged at the tail end of the impactor, and the stable impact frequency is maintained until the design depth is reached after the streamlined pipe cap at the front end of the PVC pipe enters the inside of the slope body.

[0029] The technical effect of the further scheme is that the pushing depth is controllable by restricting the impact stroke through the limiting assembly and by maintaining the stable impact frequency after entering the slope body, which is beneficial to avoid excessive impact or damage to the pipe body.

[0030] Further, in step S4, the impact is stopped after the PVC pipe reaches the design depth, the connecting structure is loosened, and the built-in steel pipe is pulled out along the axis of the PVC pipe.

[0031] The technical effect of the further scheme is that the PVC pipe can be independently left in the inside of the slope body by stopping the impact and pulling out the built-in steel pipe after reaching the design depth, and the final installation form of the water nail pipe is ensured to meet the design requirements.

[0032] Beneficial effects

[0033] Compared with the known prior art, the technical scheme provided by the application has the following beneficial effects:

[0034] This invention provides a method for installing inclined water nail pipes. By installing a streamlined solid pipe cap at the front end of the PVC pipe, setting an internal steel pipe inside the pipe body, and combining the inner and outer steel pipe structure of the pneumatic impactor, the construction stability of the PVC pipe under inclined angle propulsion conditions is effectively improved. Compared with the prior art, the present invention has at least the following beneficial effects: The use of a streamlined solid pipe cap matching the outer diameter of the PVC pipe reduces resistance at the front end of the PVC pipe when entering the slope, which helps reduce stress concentration at the front end and lowers the risk of pipe deformation. By selecting an internal steel pipe adapted to the inner diameter of the PVC pipe and keeping the steel pipe coaxial with the PVC pipe, the impact force of the pneumatic impactor can be transmitted along a unified axis, improving the stability of the force during propulsion. The use of a connecting sleeve at the tail of the pneumatic impactor, a double-layer steel pipe sleeve structure, and a screw-type clamping sleeve ensures that the impact energy is stably transmitted from the impactor to the internal steel pipe, thereby improving the efficiency and reliability of impact propulsion. The positioning bracket with a base, adjustable angle support rod, and clamping device allows the PVC pipe to be accurately adjusted and fixed at the designed tilt angle before propulsion, which helps maintain consistent construction angles. A limiting component at the tail of the impactor keeps the impactor and PVC pipe coaxial during propulsion, thereby reducing the risk of deviation caused by eccentric impact and improving the straightness of propulsion. After the pipe is pushed to the designed depth, the impact is stopped and the inner steel pipe is pulled out, so that the PVC pipe can be left in the predetermined position independently. The construction operation is simple and efficient. Attached Figure Description

[0035] Figure 1 This is a flowchart of a method for installing inclined water nail pipes according to the present invention. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0037] It is to be understood that the terms "first", "second", and the like, used in the description and the claims of the application, as well as the above-described drawings, are used to distinguish similar objects and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the data thus used can be interchanged, where appropriate, so that the embodiments of the application described herein can be carried out in other than the order shown or described herein. Furthermore, the terms "comprising" and "including" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or apparatus that includes a list of steps or units not necessarily limited to those specifically listed, but can include other steps or units not expressly listed or inherent to such process, method, product or apparatus.

[0038] The application will be further described in detail below with reference to the accompanying drawings:

[0039] Embodiment:

[0040] As Figure 1 shown,

[0041] S1, installing a streamlined solid pipe cap at the front end of the PVC pipe, and inserting a steel pipe into the PVC pipe;

[0042] Further, in step S1,

[0043] The step of installing a streamlined solid pipe cap at the front end of the PVC pipe and inserting a steel pipe into the PVC pipe includes: fixing a streamlined solid pipe cap with a diameter matching that of the PVC pipe at the front end of the PVC pipe, so that the outer shape of the pipe cap presents a smooth transition curved surface in the axial direction; selecting a steel pipe with an inner diameter matching that of the PVC pipe, and inserting the steel pipe into the PVC pipe to a predetermined position along the inside of the PVC pipe, so that the axis of the steel pipe is consistent with that of the PVC pipe.

[0044] S1.1: Before construction, according to the drainage hole diameter and drainage pipe material requirements of the design drawing, select a PVC drainage pipe that meets the strength and flexibility requirements. A pre-set fixing structure is provided at the front end of the PVC pipe, and a streamlined solid pipe cap matching the outer diameter of the PVC pipe is installed. The pipe cap is made of metal or high-strength composite material, and its outer surface presents a smooth transition conical or arc-shaped structure from the front end to the rear end, so that the pipe body can obtain smooth entry conditions during subsequent pushing.

[0045] S1.2: Select a steel pipe matching the inner diameter of the PVC pipe as an internal reinforcing member, and insert the steel pipe into the PVC pipe from the tail end of the PVC pipe along the axial direction, so that the steel pipe maintains a coaxial state with the PVC pipe after insertion. After this step is completed, the front end of the PVC pipe forms a solid end portion with a guide surface, and a steel pipe structure capable of transmitting impact force is formed inside.

[0046] S2, the wind impactor is connected to the built-in steel pipe through the inner and outer two-layer steel pipe structure.

[0047] Further, in step S2,

[0048] The step of connecting the wind impactor to the built-in steel pipe through the inner and outer two-layer steel pipe structure includes: providing a connecting sleeve at the tail of the wind impactor, fixing one end of the outer steel pipe in the connecting sleeve; arranging the inner steel pipe inside the outer steel pipe and sleeving them in the axial direction, and connecting the front end of the inner steel pipe to the steel pipe inside the PVC pipe by a screw type clamping sleeve, so that the axial impact force of the wind impactor can be transmitted along the axial direction of the inner and outer two-layer steel pipes and the built-in steel pipe.

[0049] Specifically, after the preparation of the PVC pipe and the built-in steel pipe is completed, they are transported to the slope protection slope operation platform, and the wind impactor and its connecting structure are arranged according to the on-site construction space, slope height and drainage hole inclination angle. In this embodiment, the wind impactor used is a pneumatic impact type propulsion device with a model of XQ-50, a rated impact frequency of 30-45 Hz, and a single impact energy of about 35-50 J. In order to ensure that the impact energy can be effectively transmitted to the built-in steel pipe and avoid excessive energy attenuation at the connecting end, this embodiment uses inner and outer two-layer steel pipes as the connecting structure, in which the outer steel pipe is used to protect the connecting parts and ensure the overall axial stability of the device, and the inner steel pipe is used as the main transmission channel of the impact energy.

[0050] The effective impact energy of the wind impactor When transmitted to the built-in steel pipe through the double-layer steel pipe, it can be approximately expressed as: wherein, is the output impact energy of the wind impactor, is the energy transmission efficiency of the combination of the inner and outer two-layer steel pipes, which can be determined by the following expression: wherein is the energy loss generated at the connecting section, which is related to the coaxiality of the steel pipe, the wall thickness of the steel pipe and the tightness of the connecting surface. In this embodiment, by using an outer steel pipe with a wall thickness of 6-8 mm and an inner steel pipe with a wall thickness of 4-5 mm, the energy transmission efficiency The measured value reaches 0.82-0.88, so as to ensure that the impact energy is effectively used in the subsequent propulsion process. When assembling the connecting structure, the construction personnel first inserts the inner steel pipe into the outer steel pipe, and fixes the front ends of the two to the connecting sleeve at the tail of the impact device, and realizes the fixing and positioning through the threaded screw buckle and the locking ring; then the front end of the hierarchical structure is sleeved at the tail of the steel pipe inside the PVC pipe, and the axial alignment is realized through the screw type clamping sleeve, and the axial deviation of the inner and outer steel pipes and the built-in steel pipe is controlled within 1.0 mm by adjusting the pressing force of the clamping sleeve, so as to ensure that the impact force can be stably and continuously transmitted in the axial direction. After the assembly is completed, in order to further verify the stability of the connecting system, the embodiment carries out the no-load test of the impact device on the construction site, and judges whether the system has obvious energy attenuation or structural looseness by measuring the displacement waveform of the front end of the steel pipe The peak value of the displacement waveform can be represented as: , wherein, is the equivalent axial stiffness of the built-in steel pipe and the PVC pipe combination. After reaching the peak value range of the waveform required by the construction, the next step of the propulsion operation is entered.

[0051] S3, position the PVC pipe on the slope surface according to the design angle, so that it maintains an inclined angle of 15°.

[0052] Further, in step S3,

[0053] The step of positioning the PVC pipe on the slope surface according to the design angle, so that it maintains an inclined angle of 15°, comprises: setting a positioning support for guiding on the slope surface, the positioning support comprising a base, an adjustable inclined angle support rod and a pipe body clamping device, the pipe body clamping device being used to fix the PVC pipe, and the adjustable inclined angle support rod being adjusted to the design angle and locked through a locking member, so that the PVC pipe maintains coaxial positioning along the design angle before propulsion;

[0054] Specifically: at the slope construction site, the entry point and the design depth of each inclined drainage hole are determined according to the design drawing, and the required inclined angle , the value range of which is To ensure the accuracy of the installation angle, the construction is implemented according to the following steps:

[0055] S3.1: Before entering the site, prepare the positioning support (hereinafter referred to as "support"), portable electronic inclinometer (or level / laser plumb instrument), angle scale, screw clamp or quick clamp, anchor bolt and necessary horizontal / vertical measurement marks. The support is composed of a base, an adjustable inclined angle support rod and a pipe body clamping device, the support material can be steel welded parts or aluminum alloy components, the support allows the inclination angle to be adjusted within the range of 0-30°, and the clamping device can stably clamp the pipe body within the diameter range.

[0056] S3.2: Place the bracket base at the designed PVC pipe entry point, fix the base to the slope surface by anchor bolts or temporary anchors; connect the adjustable elevation support rod to the base, and use the angle scale and portable electronic inclinometer to adjust the support rod to the designed elevation angle Lock the position of the support rod with the locking member. The deviation of the field angle is suggested to be controlled within ±1° (preferably ±0.5°).

[0057] S3.3: Place the PVC pipe with assembled pipe cap and embedded steel pipe on the pipe body clamping device of the bracket, clamp the pipe body by the screw clamp or quick clamp, so that the axis of the PVC pipe is coaxial with the axis of the support rod (axial deviation ≤ 1.0 mm), and set an axis reference line on the outer surface of the PVC pipe and align it with the center line of the bracket during clamping, so as to check in real time during the advancing process.

[0058] S3.4: If the designed vertical depth (relative to the vertical depth of the entry point) is required, the required length of the pipe body in the axial direction can be calculated as follows: The horizontal projection of the pipe body on the slope surface is: To ensure the construction allowance, the pipe body extension length is appropriately reserved based on the designed depth , which is generally 0.2 m to 0.5 m, and is determined according to the site maintenance and sealing needs), and the pipe section cutting and connection should meet the required total length .

[0059] S3.5: After clamping and initial centering, use the electronic inclinometer to check whether the axis of the PVC pipe is consistent with the set angle of the bracket , and use a ruler or a line to check the consistency of the front end of the pipe body with the ground surface elevation, and then tighten the clamping device and locking member again after confirming that there is no error.

[0060] S3.6: Record the entry coordinates, set angle , initial pipe body exposure length, and clamping position of the hole before advancing. To prevent the pipe body from deviating during construction, a monitor should be arranged by the construction personnel during the advancing stage to monitor in real time using the inclinometer or displacement measuring device, and if the angle or axis deviation exceeds the design tolerance (> ±1° or axial deviation > 1.0 mm), stop and adjust before continuing to advance.

[0061] Example scenario: for single-hole construction with a vertical depth and an elevation angle required at the slope protection, the axial length of the pipe body is calculated as follows: ,

[0062] The horizontal projection is about: In this case, the total length of the PVC pipe to be selected or spliced should not be less than 11.59+ ( Take 0.3m, the total length is greater than or equal to 11.89m), to ensure that the support and construction platform can withstand the corresponding length of operation and clamping torque.

[0063] S4, start the air impactor, make the PVC pipe advance to the designed depth along the upward angle to the slope body, then pull out the built-in steel pipe;

[0064] Further, in step S4, the step of starting the air impactor to advance the PVC pipe to the designed depth along the upward angle to the slope body and then pulling out the built-in steel pipe includes: continuously maintaining the axis of the air impactor consistent with the axis of the PVC pipe during the advancing process, the tail end of the air impactor is provided with a limiting component, the impact stroke is constrained by the limiting component provided at the tail end of the impactor, and a stable impact frequency is maintained after the streamlined cap at the front end of the PVC pipe enters the slope body until the designed depth is reached. The PVC pipe stops impacting when it reaches the designed depth, the connecting structure is loosened, and the built-in steel pipe is pulled out along the axis of the PVC pipe,

[0065] Specifically: S4.1: After the angle positioning and clamping of the PVC pipe are completed, the connecting structure of the air impactor and the built-in steel pipe is locked in the manner of S2, and the air pressure and impact frequency of the impactor are pre-adjusted. The construction site generally uses a gas source pressure of 0.5-0.7 MPa to provide impact power, and the impact frequency is set in the range of 30-45 Hz.

[0066] S4.2: After starting the air impactor, the impact force is transmitted axially along the built-in steel pipe to the cap at the front end of the PVC pipe, causing the PVC pipe to produce continuous and stable axial vibration. In the initial stage of advancing, since the cap has not yet fully entered the slope soil layer, the resistance is small and the advancing speed is fast; when entering the stable layer with increased resistance, the advancing speed gradually decreases,

[0067] The instantaneous advancing force required for advancing is estimated by the formula:

[0068] , where is the unit impact transmission energy, is the impact frequency, is the instantaneous advancing speed of the PVC pipe.

[0069] S4.3: During the advancing process, a dedicated monitoring personnel uses a portable inclinometer to monitor whether the axis of the pipe body deviates from the set upward angle ​To reduce the deviation, an auxiliary limiting component is arranged at the tail end of the impactor, so that the impactor can only move in the axial direction of the pipe body, thereby keeping the advancing direction stable.

[0070] S4.4: When the advancing length gradually approaches the design axial input length calculated in S3 , the impact frequency should be gradually reduced or the impact interval should be shortened to prevent the PVC pipe from overshooting,

[0071] The monitoring of the advancing length can be achieved by using a marker or pre-marking the scale on the outer wall of the PVC pipe; using a laser range finder to measure the exposed length; estimating by recording the displacement of the impactor; and stopping the impactor when the PVC pipe reaches the design length and is stable inside the slope body.

[0072] S4.5: After stopping the impact, loosen the connection structure of the inner and outer steel pipes, and slowly pull out the built-in steel pipe along the axial direction of the PVC pipe. During the pipe pulling process, in order to avoid additional load on the PVC pipe, the pulling speed should be kept uniform, and the pipe should not be rotated to maintain the original axial position of the PVC pipe in the slope body;

[0073] S4.6: After the built-in steel pipe is pulled out, the PVC pipe forms a stable permanent drainage channel, and the front end of the PVC pipe is in the saturated soil or water permeable layer, which can effectively complete the drainage hole.

[0074] S4.7: After the advancing and pipe pulling are completed, the exposed section of the PVC pipe is temporarily sealed and fixed, and the axial length, the measured oblique angle hole depth, the difficult point during the advancing, and the record are recorded for subsequent quality inspection or drainage pipe installation.

[0075] Taking a slope protection with a slope angle of 35° as an example, the design oblique angle is 15°, and the design axial advancing length is 10.5 m. During construction, the impact frequency is set to 38 Hz, and the monitoring shows that the speed gradually decreases from 5 cm / s to 1 cm / s during the advancing process, and the impact is stopped when the advancing length reaches 10.5 m. After the built-in steel pipe is pulled out, the PVC pipe remains in place without rebound, and then the exposed end is anchored and the next hole construction is carried out.

[0076] It should be noted that the above technical application is not limited to water nail pipe installation, but also similar capillary drainage pipe installation, PVC drainage pipe installation, and other oblique type pipe installation.

[0077] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of installing a water nail pipe by an upward and inclined method, characterized in that, The method comprises the following steps: S1, installing a streamlined solid pipe cap at the front end of the PVC pipe and inserting a steel pipe into the PVC pipe; S2, connecting the air-impact hammer to the built-in steel pipe through the inner and outer steel pipe structure; S3, positioning the PVC pipe on the slope surface at a designed angle so that it maintains an upward angle of 15°; S4, starting the air-impact hammer, and after the PVC pipe is pushed to the designed depth along the upward angle, pulling out the built-in steel pipe.

2. The method of installing a pitched water nail pipe according to claim 1, wherein In step S1, the streamlined solid pipe cap with the same outer diameter as the PVC pipe is fixedly installed at the front end of the PVC pipe, and the outer shape of the pipe cap presents a smooth transition curve along the axial direction.

3. The method of installing a pitched water nail pipe according to claim 2, wherein In step S1, a steel pipe with the same inner diameter as the PVC pipe is selected and inserted into the PVC pipe to a predetermined position, and the axis of the steel pipe is consistent with the axis of the PVC pipe.

4. The method of installing a pitched water nail pipe according to claim 3, wherein In step S2, the air-impact hammer is connected to the built-in steel pipe through the inner and outer steel pipe structure, and the tail of the air-impact hammer is provided with a sleeve, one end of the outer steel pipe is fixed in the connecting sleeve, and the inner steel pipe is arranged inside the outer steel pipe.

5. A method of installing a pitched water nail pipe according to claim 4, wherein In step S2, the front end of the inner steel pipe is connected to the steel pipe inside the PVC pipe by a screw type clamping sleeve, so that the axial impact force of the air-impact hammer can be transmitted along the axes of the inner and outer steel pipes and the built-in steel pipe.

6. A method of installing a pitched water nail pipe according to claim 5, wherein In step S3, the PVC pipe is positioned on the slope surface at a designed angle so that it maintains an upward angle of 15°, and a positioning support for guidance is arranged on the slope surface, which comprises a base, an adjustable upward angle support rod, and a pipe body clamping device.

7. A method of installing a pitched water nail pipe according to claim 6, wherein In step S3, the pipe body clamping device is used to fix the PVC pipe, and the adjustable upward angle support rod is adjusted to the designed angle by a locking member and locked to maintain the coaxial positioning of the PVC pipe along the designed angle before pushing.

8. A method of installing a pitched water nail pipe according to claim 7, wherein In step S4, after the PVC pipe is pushed to the designed depth along the upward angle, the built-in steel pipe is pulled out, and the axis of the air-impact hammer is consistent with the axis of the PVC pipe during the pushing process, and a limiting assembly is arranged at the tail end of the air-impact hammer.

9. A method of installing a pitched water nail pipe according to claim 8, wherein In step S4, the limiting assembly arranged at the tail end of the air-impact hammer restricts the impact stroke, and maintains a stable impact frequency after the streamlined pipe cap at the front end of the PVC pipe enters the slope body until it reaches the designed depth.

10. The method of installing a pitched roof gutter according to claim 8, wherein, In step S4, after the PVC pipe reaches the designed depth, the impact is stopped, the connecting structure is loosened, and the built-in steel pipe is pulled out along the axis of the PVC pipe.

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