Guiding device for bank protection pile construction of trenching machine under hard geological condition and construction method

Abstract

The invention provides a guiding device and a construction method for a trenching machine to construct bank protection piles under hard geological conditions, the guiding device comprises a guiding frame and a guiding groove longitudinally arranged in the guiding frame in a penetrating mode, and the guiding groove extends in the horizontal direction to form a sequential installation path used for limiting a plurality of bank protection piles; a tensioning mechanism is arranged on the guide frame, one end of the tensioning mechanism is connected with the guide frame, and the other end of the tensioning mechanism is in extrusion fit with the post-installed bank protection pile so that the post-installed bank protection pile can be tightly attached to the previous installed bank protection pile. By means of the guiding device provided with the guiding grooves, the sequentially-arranged paths of the multiple bank protection piles can be guided and limited, and the construction quality of the bank protection piles is improved; the tensioning mechanism is arranged, the tensioning mechanism is in close fit with the post-constructed bank protection pile, so that the post-constructed bank protection pile is in close contact with the previous constructed bank protection pile, the post-constructed bank protection pile and the previous bank protection pile have no longitudinal gap, and the construction quality of the bank protection pile is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a guiding device and a construction method for constructing bank protection piles by a trenching machine. Background Art

[0002] H-shaped revetment piles have become the preferred material in revetment projects due to their excellent bending resistance and stability, as well as the convenience of construction. These piles can adapt to various geological conditions and hydrological environments and meet the needs of various revetment projects. Whether in winding rivers, tranquil lakes, or turbulent offshore waters, H-shaped revetment piles can play their unique advantages and effectively prevent riverbank erosion, protect the ecological environment of the waters, and maintain ecological balance.

[0003] Traditional construction methods often have difficulty coping with complex geological conditions, such as hard rock and sticky soil, making the rapid and efficient construction of revetment piles a challenge. However, the use of trenching machines has greatly simplified the process, allowing construction tasks to be completed quickly under various complex geological conditions, improving engineering efficiency and reducing construction costs.

[0004] The traditional water jet drilling method for revetment piles has the following disadvantages: 1. The construction method has a long construction period; 2. The water jet construction cost is high, and drilling is prone to failure under adverse geological conditions, resulting in hole blockage and difficulty in maintenance; 3. The prefabricated pile body is easily squeezed and cracked, and the quality is poor.

[0005] The Chinese invention patent with the publication date of October 20, 2023 and the publication number of CN116905494A discloses a guide device and construction method for positioning sheet piles in waterway revetment. The guide device includes a fixed frame, a first positioning mechanism and a second positioning mechanism. The fixed frame includes a first short side bracket, a second short side bracket, a first long side bracket and a second long side bracket. The first positioning mechanism includes a first positioning rod, a second positioning rod and a drive assembly. The second positioning mechanism includes a positioning seat, a drive motor, a winding wheel and a wire rope. The construction method includes construction preparation, measurement and positioning, positioning pile driving, guide device installation, lifting steel sheet piles, steel sheet pile positioning, and steel sheet pile driving. In the embodiment of the patent, the first positioning mechanism and the second positioning mechanism enable the steel sheet pile group to be positioned and fixed in the horizontal and longitudinal directions at the same time. However, the guide device of the patent has a complex structure and is not suitable for the structure of H-shaped revetment piles.

[0006] A Chinese invention patent with a publication date of 2016-08-17 and a publication number of CN105862863A discloses a guide vehicle for piling construction of bank engineering, comprising a front frame and a rear frame that can be detachably locked on a pile body inserted in the soil, the front frame and the rear frame are connected by a driving structure, the driving structure is used to drive the front frame and the rear frame to slide relative to each other along the arrangement direction of the pile body, the front part of the front frame is provided with a guide frame having a guide space for inserting the lower pile body, the guide space of the guide frame can extend in front of the front end of the pile body for inserting the lower pile body. However, the guide vehicle structure of the patent is complex and is not suitable for H-shaped bank protection piles. Summary of the invention

[0007] In view of the above technical problems, the present invention proposes a guiding device and a construction method for a trenching machine to construct bank protection piles under hard geological conditions, which are used to solve the problem that there is a lack of guiding devices for H-shaped bank protection piles in the prior art.

[0008] In order to achieve the above object, the technical solution of the present invention is achieved as follows: A guiding device for a trenching machine to construct bank protection piles under hard geological conditions, the guiding device comprising a guiding frame and a guiding groove longitudinally penetrating the guiding frame, the guiding groove extending in a horizontal direction to form a path for limiting the sequential installation of a plurality of bank protection piles; a tensioning mechanism is provided on the guiding frame, one end of the tensioning mechanism is connected to the guiding frame, and the other end is squeezed and matched with a bank protection pile installed later so that the bank protection pile installed later is close to the previously installed bank protection pile.

[0009] The present invention provides a guide device with a guide groove in it, which can guide and limit the sequential arrangement paths of multiple bank protection piles, thereby improving the construction quality of the bank protection piles; the present invention provides a tensioning mechanism, which is closely matched with the bank protection piles constructed later. After the tensioning mechanism is tightened, the bank protection piles constructed later are in close contact with the previously constructed bank protection piles, so that the bank protection piles constructed later can have no longitudinal gap with the previously constructed bank protection piles, thereby improving the construction quality of the bank protection piles.

[0010] Furthermore, in order to make the tensioning mechanism closely contact and stably cooperate with the bank protection pile, and to facilitate the tensioning control of the tensioning mechanism, the tensioning mechanism includes a guide wheel and a hand winch arranged at both ends of the guide wheel, one end of the hand winch is connected to the front end of the guide frame, and the other end is respectively connected to the two ends of the guide wheel; and the guide wheel is rollingly cooperated with the vertical side of the H-shaped bank protection pile.

[0011] Furthermore, in order to facilitate the rearward movement of the revetment piles for subsequent revetment pile construction after the revetment piles are fully driven into the guide groove of the guide frame, the front end of the guide frame is provided with a "door"-shaped end, and the space below the "door"-shaped end is used to accommodate the installed revetment piles.

[0012] Furthermore, in order to ensure the horizontality of the guide frame after installation, thereby ensuring that the guide groove of the guide frame extends horizontally, a level bubble is provided on the guide frame.

[0013] A method for constructing bank piles by a trenching machine under hard geological conditions comprises the guide device for constructing bank piles by a trenching machine under hard geological conditions as described in any one of the above, and further comprises the following steps: S1. Build a construction platform; S2, installing a guide frame at the location of the revetment piles to be constructed on the construction platform, so that the guide frame forms a sequential installation path for limiting the plurality of revetment piles on the construction platform; S3, trenching machine construction: The grab bucket of the trenching machine digs the soil and forms trenches according to the path limited by the guide frame; S4. Construct bank protection piles on the path where the excavation is completed.

[0014] Furthermore, the step S4 comprises the following steps: S41, vertically driving a bank protection pile into the guide groove of the guide frame by a pile driver; S42, inserting the next bank protection pile into the guide groove of the guide frame by a pile driver, and making the next bank protection pile close to the installed bank protection pile; S43, moving the guide wheel to the side of the next revetment pile away from the installed revetment pile, and making the revetment pile located between the hand chain blocks at both ends of the guide wheel; tightening the hand chain blocks, making the guide wheel fit closely with the revetment pile inserted in step S, and making the revetment pile inserted in step S closely contact with the previous installed revetment pile; S44, the vibrating hammer drives the bank piles inserted in step S to a specified elevation, and during the pile sinking process, the guide wheel always guides the bank piles so that there is no longitudinal gap between the next bank pile and the previous installed bank pile; S45, release the hand chain hoist to move the guide wheel backward to the next pile position; S46, repeating steps S42 to S45 until the injected bank protection piles fill up the entire guide groove of the guide frame.

[0015] Furthermore, the step S further comprises the following steps: S47, lifting the guide device, and moving the guide device until the "gate"-shaped end of the guide frame is located on the top of the last installed revetment pile; S48. Repeat steps S42 to S47 until the construction of the bank protection piles is completed.

[0016] Furthermore, the method further comprises the following steps: S5. The construction joints between adjacent revetment piles are first smoothed with cement mortar, core-filled concrete is set in the space between adjacent revetment piles, concrete is poured into the joint holes using a pump truck, and the vibration, finishing and maintenance procedures are completed.

[0017] Furthermore, the method further comprises the following steps: S5. The construction joints between adjacent revetment piles are first smoothed with cement mortar, and core-filling concrete is set in the space between adjacent revetment piles after grouting.

[0018] Furthermore, the trenching sequence in step S3 is to dig the two sides first and then the middle.

[0019] Beneficial effects of the present invention: 1. The present invention provides a guide frame, with steel sections provided on both sides of the guide frame and a guide groove formed in the middle, so as to guide and limit the setting path of the bank protection piles and improve the construction quality of the bank protection piles; 2. The guide frame of the present invention is provided with a "gate"-shaped end portion, so that after the guide groove of the guide frame is filled with revetment piles, the guide device can be moved to the "gate"-shaped end portion located on the top of the last installed revetment pile, so as to continue the construction of subsequent revetment piles; 3. The guide device of the present invention is provided with outriggers to ensure that it can be embedded in the soil layer during positioning, and effectively control the deviation of the guide frame caused by vibration during the construction of the bank protection pile; 4. The present invention provides a tensioning mechanism, the guide wheel of which is closely fitted with the revetment pile constructed later, and makes the revetment pile constructed later closely contact with the previously constructed revetment pile, so that there is no longitudinal gap between the revetment pile constructed later and the previously constructed revetment pile, and it is also helpful to adjust the verticality during the sheet pile construction process, thereby improving the construction quality of the revetment pile; 5. A guide wheel is arranged on the tensioning mechanism of the present invention, and the guide wheel hub is wrapped with rubber to protect the male and female tenons on the pile side; the force applied can be flexibly adjusted according to the actual situation on site and construction experience through the manual hand winch; 6. The present invention adopts a trenching machine to construct H-type bank piles under adverse geological conditions to replace the traditional water jet drilling method for bank pile construction, which can effectively solve the problems encountered by the traditional water jet drilling method, effectively shorten the construction time, improve the project quality, and generate good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a construction schematic diagram of the present invention; Figure 2 The construction sequence of the present invention is as follows; Figure 3 It is a structural schematic diagram of the guide device of the present invention; Figure 4 It is a schematic diagram of the use of the guiding device of the present invention.

[0022] In the figure: 1. construction platform, 2. guide device, 21. guide frame, 22. hand winch, 23. guide wheel, 24. spirit level, 3. bank protection pile, 4. trenching machine, 41. grab. DETAILED DESCRIPTION

[0023] 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.

[0024] like Figure 1 As shown, the guide device of the trenching machine described in Example 1 of the present invention for constructing bank piles under hard geological conditions, the guide device 2 includes a guide frame 21 and a guide groove arranged in the guide frame 21, as shown in FIG. Figure 3 and Figure 4 As shown, the guide groove runs through the guide frame 21 longitudinally, so that the bank pile 3 can pass through the guide groove and be driven into the river bank, and the guide groove extends in the horizontal direction to form an "I"-shaped groove, which is used to limit the installation path of multiple bank piles 3 in sequence. The guide groove limits the bank piles 3 to be arranged in a row in a straight line, thereby improving the installation quality of the bank piles 3. The guide frame 21 has sufficient strength and rigidity to achieve the purpose of controlling the axis position of the H-shaped bank pile, reducing the plane distortion of the pile, and improving the pile driving efficiency. The guide frame 21 is provided with a tensioning mechanism, one end of which is connected to the front end of the guide frame 21, and the other end of the tensioning mechanism is pressed and matched with the outer side surface of the bank pile 3 installed later. Among them, the outer side surface is the side of the bank pile 3 installed later that is away from the installed bank pile 3, and the bank pile 3 installed later is pulled toward the installed bank pile 3, so that the bank pile 3 installed later is close to the installed previous bank pile 3, reducing or even avoiding the gap between the bank piles 3. The tightening mechanism can generate reasonable and effective horizontal restraint force on the bank piles 3 during the construction process to ensure that the joints between the plates are tightly fastened.

[0025] Furthermore, in the present embodiment, the guide frame 21 is made of H-shaped steel. The guide frame 21 includes two horizontally arranged H-shaped steels. The two H-shaped steels are arranged in parallel and at intervals, and after the ends of the two H-shaped steels are connected, a guide groove is formed between the two H-shaped steels. Support legs are provided at the lower ends of the two HW400 steels. In the present embodiment, both H-shaped steels are HW400 steels. Both ends of the two HW400 steels are provided with downward supporting legs. The function of the supporting legs is that when the guide device is installed, the lower end of the supporting legs can be embedded in the soil layer, thereby avoiding the deviation and shaking of the guide device during the piling process. The supporting legs can also be made of H-shaped steel, or other steel sections.

[0026] Furthermore, if Figure 3 and Figure 4 As shown, the tensioning mechanism includes a guide wheel 23 and hand winches 22 arranged at both ends of the guide wheel 23, that is, hand winches 22 are respectively arranged at both ends of the guide wheel 23, one end of the hand winches 22 is connected to the front end of the guide frame 21, and the other end is respectively connected to the two ends of the guide wheel 23, so that when the guide wheel 23 cooperates with the outer side of the revetment pile 3 installed later, the tensioning mechanism is transversely sleeved on the revetment pile 3, that is, the revetment pile 3 is located between the hand winches 22 at both ends of the guide wheel 23, so that the rearmost revetment pile 3 is pulled close to the installed revetment pile 3 by the hand winches 2; and the wheel hub of the guide wheel 23 is rollingly matched with the vertical side of the H-shaped revetment pile 3, as shown in FIG. Figure 4 shown.

[0027] Furthermore, for the H-shaped revetment pile 3 , the hub of the guide wheel 23 is wrapped with 2 cm thick rubber to avoid scratching the revetment pile 3 when cooperating with the revetment pile 3 .

[0028] Embodiment 2 is different from Embodiment 1 in that Figure 3 As shown, the front end of the guide frame 21 is provided with a "gate"-shaped end. Among them, the front ends of the two HW400 steels are each connected with two relatively high legs, and the upper ends of the high legs extend beyond the upper surfaces of the two HW400 steels. The upper ends of the high legs are connected by a section of HW400 steel to form a "gate"-shaped end. The rear ends of the two HW400 steels are connected with short legs, and the lower ends of the high legs and the short legs can be embedded in the soil layer when the guide device is installed. The space below the "gate"-shaped end is used to accommodate the installed revetment piles, so that after the guide groove of the guide frame 21 is filled with revetment piles, the guide device 2 can be moved backwards so that the "gate"-shaped end is located on the top of the last installed revetment pile, so that the guide groove of the guide frame 21 provides a guiding effect for the next revetment pile, which is convenient for the subsequent revetment pile construction.

[0029] Embodiment 3 is different from Embodiment 2 in that Figure 3As shown, the guide frame 21 is provided with a level bubble 24 for ensuring the horizontality of the guide frame 21 after installation, thereby ensuring that the guide groove of the guide frame 21 extends horizontally.

[0030] Embodiment 4, a construction method for constructing bank piles by a slotting machine under hard geological conditions, adopts the above-mentioned guide device for constructing bank piles by a slotting machine under hard geological conditions. The construction method of the bank pile of the present invention adopts a single-pile driving method, and a guide frame is set according to the direction before the sinking pile. The guide frame adopts I-shaped steel as a guide for driving the bank pile, and the male and female tenons of adjacent bank piles are closely connected.

[0031] Furthermore, the construction method of the trenching machine for constructing bank piles under hard geological conditions specifically includes the following steps: Step 1: Construction platform construction: Build the construction platform with the axis of the bank pile as the center, excavate the outer soil, fill it to the inner side, and compact it. Build the construction platform until the design elevation. The outer side of the construction platform is sloped, and the slope is not less than the design standard. In this embodiment, the construction platform is 1.4 meters wide and the elevation is 1 meter below the design elevation; the slope of the outer side is not less than 1:1.

[0032] In addition, the guide device 2 is made in advance. The guide device can be made before the construction platform is built, or it can be made at the same time as the construction platform is built. It can also be made after the construction platform is built and before the revetment pile is constructed.

[0033] Step three, installation of the guide device 2; install the guide frame 21 according to the piling position, and at the same time embed the legs of the guide frame 21 into the soil layer to keep it stable so that the position in the guide groove is the installation position of the revetment pile.

[0034] In another preferred embodiment, before constructing the first revetment pile 3, a positioning steel, i.e., a positioning pile, is driven, and then the first revetment pile 3 is constructed close to the positioning steel, so as to facilitate the positioning of the first revetment pile 3. During the driving of the positioning steel, two total stations with an angle of about 90° are used to strictly control the verticality, and the verticality deviation should not exceed 1 / 200. The depth of the positioning steel inserted into the soil should be appropriately lengthened, and the upper end should be 0.5m higher than the designed pile top elevation of the H-shaped revetment pile, and the pile top elevation is controlled by a level.

[0035] Step 4: Construction of trenching machine; when trenching machine 4 is excavated, there is a special person to direct it. During the excavation process, the verticality should be measured and corrected in time. In this embodiment, the excavation adopts hydraulic grab trenching machine to grab soil and trench. The standard trench section adopts three-sequence trenching, such as Figure 2 As shown, dig the two sides first, then the middle, that is, dig area A first, then area B, and finally area C in the middle. During the excavation process, the verticality should be measured and corrected in time. After the trench is formed, the depth of the trench should be measured in time to ensure the accuracy of the trench.

[0036] (1) After the hydraulic grab slotting machine is positioned, the grab 41 is parallel to the inner side of the guide frame 21, i.e., the groove wall of the guide groove. When the grab is lowered, it falls into the guide frame by itself, and forceful pushing is not allowed to ensure the groove forming accuracy; (2) When the soil layer is formed into a trench, it is not advisable to dig the soil with a full bucket. That is, each bucket should not be filled with soil. The soil that comes out should be directly put on the soil transport truck and taken to the soil dump to ensure smooth flood discharge in the river channel; (3) During the process of grab bucket excavation, the up and down speeds should be slow, and the grab bucket should be closed when lowered and opened again during excavation to avoid causing collapse.

[0037] (4) When the grab bucket is lowered for digging, the center of the grab bucket is aligned with the hole center marker placed on the guide frame, and the grab bucket is lowered along the outer wall of the guide frame to ensure that the digging position is correct.

[0038] Step 5, revetment pile construction; in order to make the piles tightly connected, piling is the most critical process. To this end, a vibrating hammer and a crawler pile driver are used for sequential construction in one direction to achieve the effect of making the piles tight. During the construction of the revetment pile 3, the deviation of the revetment pile is corrected in time through the guide frame 21 and the total station. The steps of pile driving construction are as follows: (1) Drive the revetment pile 3 into the river bank soil layer by a pile driver. After the pile is inserted, use a total station to check and correct the pile position. If there is any deviation, lift and reinsert it until it is in place. Then press the pile hammer to the top of the pile to make the pile sink slowly into the soil. At the same time, check whether the center of the pile hammer and pile cap is consistent with the pile axis, and check whether the pile position has moved, so as to make necessary corrections. If everything is in order, hammering construction can be carried out. During the piling process, use two total stations to monitor the verticality of the pile body at a 90-degree angle on both sides of the pile. If deviation is found, correct it immediately and fix it before construction. When sinking, it should be hit slowly and lightly, and the impact energy of the pile hammer should not be too large. As the pile is driven, the impact energy of the pile hammer can be gradually increased. When piling, use a pile cap and straw paper (or hardwood) cushion layer suitable for the pile and hammer, with a thickness of 5 cm and a plane size that is slightly smaller than the pile cross section by 1~2 cm in length and width. Use one cushion for each revetment pile 3, and do not use it in rotation. If the final penetration is small, consider adding a block of wood in advance. Replace the cushion layer that has been compacted and lost its elasticity in time. When driving piles, fill in the pile driving record in detail and accurately, especially pay attention to the hammering height and the penetration of the pile in the last 50CM of the pile length. The pile driving should be completed continuously until the design elevation. During the pile sinking process, pay attention to the verticality of the pile driver body at all times, and take measures to adjust the body when necessary to ensure the quality of pile sinking; (2) The rear revetment pile is placed through the clamping mouth of the pile driver, and the lower end of the rear revetment pile is inserted into the guide groove between the guide frame 21 and the guide wheel 23, and the rear revetment pile is placed as close to the previous revetment pile as possible; (3) Move the guide wheel to the side of the last revetment pile in step (2), and then tighten the hand chain hoist to make the guide wheel fit closely with the last revetment pile in step (2), and make the last revetment pile in step (2) closely contact with the first revetment pile in step (1); (4) the vibrating hammer drives the last revetment pile of step (3), and during the whole pile sinking process, the guide wheel always guides the last revetment pile of step (3), so that there is no longitudinal gap between the last revetment pile of step (3) and the first revetment pile of step (1); (5) The last revetment pile 3 of step (4) is driven to the specified elevation. The elevation error is measured with a level and then the hand chain hoist 22 is released to move the guide wheel 23 to the rear end, i.e., away from the front end of the guide frame and also away from the first revetment pile 3, to the next pile position; (6) Repeat step (1) to step (5) of step 5 until the injected revetment piles 3 fill the entire guide groove of the guide frame; (7) Use a crane to lift the guide frame, and use the clamps to clamp the revetment piles and re-press them until the top elevations of all piles are consistent with the specified elevation; (8) After the gate-shaped end of the guide frame is located on the top of the last revetment pile of the revetment pile 3 constructed above, the stabilizing guide device 2 is installed; (9) Repeat steps (2) to (8) until all revetment piles are driven; (10) After all revetment piles are driven, the construction joints between revetment piles 3 are first smoothed with M10 cement mortar, and core-filled concrete is placed in the joint holes of revetment piles 3, i.e., in the space enclosed between adjacent revetment piles 3. A pump truck is used to pour concrete into the joint holes, and vibration, finishing, and maintenance are performed. If the revetment project requires water stopping, the lower part of the core-filled concrete can be treated by grouting, i.e., grouting is first performed in the space enclosed between adjacent revetment piles 3, and then core-filled concrete is placed.

[0039] 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, a person of ordinary skill in the art should understand that any modification to the technical solutions described in the aforementioned embodiments, or any equivalent replacement of some or all of the technical features therein, within the spirit and principles of the present invention, and such modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A guide device for trenching machines to construct bank piles under hard geological conditions, characterized in that: The guide device (2) comprises a guide frame (21) and a guide groove which is longitudinally penetrated and arranged in the guide frame (21), wherein the guide groove extends in a horizontal direction to form a path for limiting the sequential installation of a plurality of bank protection piles (3); a tensioning mechanism is provided on the guide frame (21), one end of the tensioning mechanism is connected to the guide frame (21), and the other end is pressed and matched with a bank protection pile (3) installed later so that the bank protection pile (3) installed later is closely attached to the previously installed bank protection pile (3).

2. The guiding device and construction method for constructing bank piles by a trenching machine under hard geological conditions according to claim 1 is characterized in that: The tensioning mechanism comprises a guide wheel (23) and a hand chain hoist (22) arranged at both ends of the guide wheel (23), one end of the hand chain hoist (22) is connected to the front end of the guide frame (21), and the other end is respectively connected to both ends of the guide wheel (23); and the guide wheel (23) is in rolling cooperation with the vertical side surface of the H-shaped bank protection pile (3).

3. The guiding device and construction method for constructing bank piles by a trenching machine under hard geological conditions according to claim 2 is characterized in that: The front end of the guide frame (21) is provided with a "gate"-shaped end, and the space below the "gate"-shaped end is used to accommodate the installed bank protection piles.

4. The guiding device and construction method for constructing bank protection piles by a trenching machine under hard geological conditions according to any one of claims 1 to 3, characterized in that: The guide frame (21) is provided with a level bubble (24).

5. A method for constructing bank piles by a trenching machine under hard geological conditions, characterized in that: The method comprises the guide device for constructing bank piles of a trenching machine under hard geological conditions as claimed in any one of claims 1 to 4, and further comprises the following steps: S1. Build a construction platform (1); S2, installing a guide frame (2) at a position where the revetment piles (3) are to be constructed on the construction platform (1), so that the guide frame (2) forms a path on the construction platform (1) for sequentially installing the plurality of revetment piles (3); S3, trenching machine (4) construction: the grab bucket (41) of the trenching machine (4) digs soil to form a trench according to the path limited by the guide frame (2); S4. Construct bank protection piles (3) on the path where the excavation is completed.

6. The method for constructing bank piles by a trenching machine under hard geological conditions according to claim 5 is characterized in that: The step S4 comprises the following steps: S41, vertically driving a bank protection pile (3) into the guide groove of the guide frame (21) by a pile driver; S42, inserting the next bank protection pile (3) into the guide groove of the guide frame (21) by means of a pile driver, and bringing the next bank protection pile (3) close to the installed bank protection pile (3); S43, moving the guide wheel (23) to a side of the next revetment pile (3) away from the installed revetment pile (3), and making the revetment pile (3) located between the hand chain hoists (22) at both ends of the guide wheel (23); tightening the hand chain hoists (22) so that the guide wheel (23) and the revetment pile (3) inserted in step S42 fit tightly, and making the revetment pile (3) inserted in step S42 come into close contact with the previous installed revetment pile (3); S44, vibrating the hammer to drive the bank protection pile (3) inserted in step S42 to a specified elevation, and during the pile sinking process, the guide wheel (23) always guides the bank protection pile (3) so that there is no longitudinal gap between the next bank protection pile (3) and the previous installed bank protection pile (3); S45, releasing the hand chain hoist (22), so that the guide wheel (23) moves backward to the next pile position; S46, repeating steps S42 to S46 until the injected bank protection piles (3) completely occupy the guide groove of the guide frame (21).

7. The method for constructing bank piles by a trenching machine under hard geological conditions according to claim 6, characterized in that: The step S4 further comprises the following steps: S47, lifting the guide device (2), and moving the guide device (2) until the "door"-shaped end of the guide frame (21) is located on the top of the last installed revetment pile (3); S48, repeating steps S42 to S47 until the construction of the bank protection piles (3) is completed.

8. The method for constructing bank protection piles by a trenching machine under hard geological conditions according to claim 5, characterized in that: The following steps are also included: S5. The construction joints between adjacent revetment piles (3) are first smoothed with cement mortar, core-filled concrete is arranged in the space between adjacent revetment piles (3), concrete is poured into the joint holes using a pump truck, and the vibration, finishing and maintenance procedures are completed.

9. The method for constructing bank protection piles by a trenching machine under hard geological conditions according to claim 5, characterized in that: The following steps are also included: S5. The construction joints between adjacent revetment piles (3) are first smoothed with cement mortar, and core-filling concrete is then provided in the space between adjacent revetment piles (3) after grouting.

10. The method for constructing bank protection piles by a trenching machine under hard geological conditions according to claim 5, characterized in that: The trenching sequence in step S3 is to dig the two sides first and then the middle.

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