Device and grooving method for constructing diaphragm wall by hanging vibration tunneling

Abstract

The present application discloses a machine for constructing a diaphragm wall by means of suspended vibration tunneling, which includes a traveling device with a hoisting device and a power system, and a monitoring device; the traction end of the hoisting device suspends a vibration trench forming and concrete pouring device, and the vibration trench forming and concrete pouring device includes a vertical vibration tunneling frame, an exciter, a hammer-anvil structure and its locking and unlocking connection device, a guiding and deviation correcting device, a slurry circulation and concrete pouring pipeline system, a trench wall casing and its connecting device; different vibration tunneling modes are implemented through the locking and unlocking of the hammer-anvil structure; the machine of the present application has the characteristics of high efficiency, low energy consumption and light weight for constructing diaphragm walls in specific strata that are difficult to drill, such as dry weathered crust containing gravel, gravel-cobble-gravel layer, etc., and soft soil strata with high fluidity.

Description

Technical Field

[0001] The present invention relates to a device and a grooving method for constructing a diaphragm wall by means of a suspended vibration tunneling, belonging to the technical field of engineering equipment. Background Art

[0002] As understood by the inventor, in engineering fields such as water conservancy, transportation, and construction, it is necessary to construct concrete diaphragm walls with different depths and thicknesses as anti-seepage structures or combined load-bearing structures under various complex geological conditions. In the actual construction process, if it is necessary to excavate a narrow and deep trench to construct various underground continuous walls in strata containing gravel, boulders, floating stones, as well as hard rock strata and soft soil strata with large fluidity, it is still a very difficult problem to be solved for the existing grooving equipment. For the existing multi-head drill grooving machine, its tunneling mechanism is that multiple drills rotate and mill under the pressure weight, with a fast excavation speed and high mechanization degree. However, the equipment has a large volume and self-weight, without impact and vibration mechanisms, and is mainly suitable for tunneling in soil layers, not suitable for tunneling in strata such as cobblestones and floating stones, and even less suitable for tunneling in bedrock.

[0003] The Chinese utility model and invention patent "A Suspended Rotary-Impact Combined Tunneling Engineering Grooving Machine" (Patent No. ZL 2018 2 0980721.7) applied by the inventor on February 9, 2018, discloses a suspended rotary-impact combined tunneling engineering grooving machine, which relates to a suspended multi-bit rotary-impact combined tunneling engineering grooving machine, including a traveling device with a hoisting device and a power system, and a monitoring device; the traction end of the hoisting device suspends a tunneling device and a mud circulation channel. The tunneling device includes a vertical guiding frame, a deviation rectifying device, grouped drills and corresponding vertical high-frequency impact devices; the drill drive shafts within each group are connected by a power distribution box horizontally arranged on the guiding frame and are driven to rotate by the same power driving device; the high-frequency impact device is pressed against the top of a single drill drive shaft or against the top surface of the connecting cross beam connecting a group of drill drive shafts under the push of a buffer device or a plunger oil cylinder. The connecting cross beam of a group of drill drive shafts and the box-shaped bottom beam of the guiding frame are movably connected through a group of suspension sliding devices.

[0004] This application can be used for grooving operations in different strata, including soil layers and rock strata, with good effects. It realizes a tunneling and grooving mechanism that combines high-frequency impact and rotary milling of multiple drills, and the rock strata around the grooved wall are intact with low damage.

[0005] In further practical research, the inventor found that the grooving machine combines the mechanisms and functions of impact crushing and rotary cutting for tunneling, but lacks the mechanism of vibratory tunneling. In engineering practice, for difficult-to-drill strata such as dry weathered crust containing gravel (with associated water in the physical sense) and gravel-cobble-gravel layers, the method of discharging rock slag after impact-rotary milling and crushing is not an ideal way, and the power consumption for rock crushing is large. When constructing diaphragm walls in deep overburden layers, such strata are also common and are often encountered in basic engineering such as the construction, reinforcement, and subway construction of reservoir dams. At the same time, the previous engineering grooving machines are also troubled by quality problems caused by the collapse of the groove wall, shrinkage holes, and mud inclusion when constructing diaphragm walls in strata with high fluidity such as silt soil.

[0006] In response to the above situations, the technology of this application innovates a grooving machine that combines three tunneling mechanisms of vibration-rotation-impact, as well as groove wall protection devices such as retaining casings, and overcomes the above-mentioned technical problems. Summary of the Invention

[0007] Purpose of the Application: Aiming at the problems and deficiencies in the existing technology, this application further improves and innovates on the basis of the above-mentioned prior application patent technology, and provides a device for constructing diaphragm walls by hanging vibratory tunneling. This application is characterized by high efficiency, low energy consumption, and light weight for constructing diaphragm walls in specific strata such as dry weathered crust containing gravel and gravel-cobble-gravel layers that are difficult to drill, as well as strata with high fluidity such as silt soil. At the same time, the machine of this application is connected to the applicant's existing multi-bit rotary-impact grooving patent technology. On the premise of a unified main machine and a compatible power source, by replacing the frames with different tunneling mechanisms, their respective advantages and characteristics can be brought into play to cope with different complex geological environments and optimize the tunneling efficiency.

[0008] Technical Solution: A device for constructing diaphragm walls by hanging vibratory tunneling, including a traveling device with a hoisting device and a power system, and a monitoring device; the traction end of the hoisting device hangs a vibratory grooving and concrete pouring device, and the feature is that the vibratory grooving and concrete pouring device includes a vertical vibratory tunneling frame, an exciter, a hammer-anvil structure and its locking and unlocking connection device, a guiding and deviation-correcting device, a mud circulation pipeline system, and a concrete pouring pipeline system;

[0009] The exciter is installed above the inner cross beam of the vibratory tunneling frame, and the hammer-anvil structure and its locking and unlocking connection device are arranged between the exciter and the cross beam of the vibratory tunneling frame;

[0010] The hammer-anvil structure consists of a protruding hammer at the bottom of the exciter, an anvil seat on the top surface of the frame cross beam, and a locking and unlocking connection device between the protruding hammer and the anvil seat;

[0011] When the lock - opening connection device is locked, a rigid connection state is formed between the vibrating tunneling frame and the vibrator. The gap between the hammer and the anvil is sealed, and they do not collide with each other. The vibrator directly transmits vibration energy to the vibrating tunneling frame, generating corresponding deformation and displacement by exciting compressive - tensile waves on the surface of the vibrating tunneling frame. By adjusting the oil pressure and flow rate of the main engine power source, the frequency of the vibrator is adjusted accordingly. The vibration - wave effect of the vibrating tunneling frame is applied to the rock and soil around the frame and the bottom surface of the frame;

[0012] When the lock - opening connection device is opened, impacts occur between the hammer and the anvil. By adjusting the excitation frequency of the vibrator, the vibrator and the hammer - anvil structure transmit vibration energy to the vibrating tunneling frame in an impact - vibration mode. The vibrating tunneling frame transmits the impact - vibration wave effect to the rock and soil around the frame and the bottom surface of the frame. Relative slip occurs between the vibrating tunneling frame and the rock formation, and it enters the rock formation. After the trench is formed, concrete is poured in a timely manner through the slurry circulation pipeline system and the concrete pouring pipeline system described above.

[0013] The lock - opening connection device of the hammer - anvil structure further limited in this application includes: a return spring and a pin shaft arranged between the base plate of the vibrator and the base plate of the anvil seat, and the protruding hammer fixed at the lower central position of the base plate of the vibrator;

[0014] A chute is horizontally opened on the base plate of the anvil seat. A movable anvil is arranged in the chute. An anvil column and a plug column are arranged on the movable anvil. The height of the anvil column is less than the height of the plug column:

[0015] The vertical distance between the anvil column and the protruding hammer corresponds to the vibration - impact amplitude. Driven by hydraulic pressure or electricity, the movable anvil is moved to align the anvil column with the protruding hammer under the base of the vibrator. The protruding hammer and the anvil column make up - and - down impacts within a limited amplitude range.

[0016] When the plug column moves to the lower part of the protruding hammer, the top of the plug column abuts against the lower end of the protruding hammer, sealing the hammer - anvil gap, and the hammer - anvil structure is locked.

[0017] Preferably, the vibrating tunneling frame further includes a rotary power power - dividing box horizontally arranged inside the vibrating tunneling frame and drill bits grouped and arranged at the bottom of the vibrating tunneling frame; the drill bit drive shafts in each group are connected by a spur - gear power - dividing box and are driven to rotate by the same power drive device; a rotary - impact - vibration tunneling mechanism is formed by adjusting the oil pressure, flow rate of the main engine power source and the excitation frequency of the vibrator.

[0018] Preferably, it further includes a grooved wall casing arranged outside the vibrating tunneling frame and a retaining movable casing connection structure to play a role in protecting the stability of the grooved wall in a stratum with large fluidity, and timely complete the pouring and vibration compaction of the concrete for the diaphragm wall under complex geological conditions of deep overburden layers;

[0019] The retained movable casing connection structure is a clamping device distributed at the connection between the vibration tunneling frame and the groove opened in the grooved wall casing;

[0020] By operating the control system to drive the clamping device, the rotating chuck of the vibration tunneling frame is screwed into the groove of the grooved wall casing and then tightly fastened, and transmits vibration waves, gravity and pulling force to the grooved wall casing, so that the grooved wall casing and the vibration tunneling frame vibrate and sink or are pulled out together; when encountering a formation range with strong fluidity, control the clamping device to rotate away from the groove of the grooved wall casing to release the buckle, and retain the grooved wall casing at the corresponding position to protect the stability of the grooved wall of the specific formation.

[0021] Preferably, the clamping device is composed of an upper rotating chuck, a lower rotating chuck and a limit stop block driven by power to rotate and arranged on the vibration tunneling frame, and a fixed stop block arranged in the groove of the grooved wall casing; an electromagnetic or hydraulic drive control system is arranged on the vibration tunneling frame for controlling the upper rotating chuck and the lower rotating chuck to rotate relative to the vibration tunneling frame, so as to connect the grooved wall casing and the vibration tunneling frame into one body or separate them from each other.

[0022] When the vibration tunneling frame drives the grooved wall casing to move downward, the lower rotating chuck rotates outward to clamp the grooved wall casing, and the upper rotating chuck retracts inward; on the contrary, when the vibration tunneling frame drives the grooved wall casing to move upward, the upper rotating chuck rotates outward to clamp the grooved wall casing, and the lower rotating chuck retracts inward. In this way, when it is necessary to release the buckle, the vibration tunneling frame and the grooved wall casing can move relatively up and down, so as to loosen the buckle and rotate the outwardly rotating movable chuck inward.

[0023] Preferably, a vibration damping device is arranged at the top of the vibration tunneling frame, and the vibration tunneling frame is connected to the suspension end of the traction end of the hoisting equipment through the vibration damping device.

[0024] Preferably, the concrete pouring pipeline system includes a pumped concrete injection interface installed on the upper part of the vibration tunneling frame, a pouring interface installed on the lower part, and a pipeline connecting the upper and lower interfaces. After the tunneling reaches the designed grooving depth, concrete is poured through the concrete pouring pipeline system.

[0025] The present invention also discloses a construction method of the above-mentioned machine, which is characterized in that: when the machine pours concrete, the vibration tunneling frame is repeatedly pulled out and sunk while pouring, and the concrete is compacted by the vibration of the frame, or the concrete is vibrated and extruded into the grooved wall rock and soil layer to expand the cross-section of the concrete diaphragm wall;

[0026] Within the range of the grooving wall casing, starting from the bottom end of the grooving wall casing, while pouring concrete and as the concrete pouring surface rises, gradually extract the grooving wall casing until the concrete pouring in the range of the soft flowing stratum is completed, and then lift the grooving wall casing out of the ground;

[0027] During the grooving process, slurry is transported through the slurry circulation pipeline system, and the formed grooving wall during the tunneling process can be protected by slurry;

[0028] During the tunneling process, the winch equipment is used to control the vibrating tunneling frame to continuously repeat tunneling downward by a corresponding depth and then moderately extract upward, and continuously perform the operation of vibrating up and down to vibrate and compact the formed grooving wall during the tunneling process to strengthen the grooving wall and prevent it from collapsing;

[0029] After reaching the designed grooving depth, then pour concrete through the concrete pouring pipeline system.

[0030] Preferably, in the grooving construction, a unified main machine and suspension device are adopted, the pressure and flow rate of the power source are adjusted, and the frame structure below the suspension device is replaced in a timely manner according to different stratum conditions, and a vibrating tunneling type frame or a multi-bit rotary-impact combined tunneling type frame adapted to the grooving size is respectively adopted to implement the conversion of different tunneling mechanisms of vibrating extrusion tunneling and impact crushing rock tunneling.

[0031] 1) The three vibrating tunneling methods of the machine in this application form a groove by vibrating waves to extrude the surrounding gravel-cobble rock and soil, avoiding the workload of impact crushing of eggs and gravels, which can greatly improve the tunneling efficiency and reduce power consumption. The vibrating tunneling and rotary-impact tunneling are completely different in mechanism.

[0032] In vibrating tunneling, when the vibrator is turned on, the high-frequency pulse acting on the frame is transformed into a radial compressive stress and propagates on the frame in the form of a compression-tension wave at the speed of sound, causing a radial microscopic deformation of the vibrating frame and moving downward together with the compression wave. As the amplitude of the compression wave increases, the microscopic mechanical deformation caused by the wrinkling force at the front end of the compression wave will also increase and act on the rock and soil close to the vibrating frame and the drill bit. Under the repeated action of the high-frequency and large-amplitude compression wave, the rock particles are in a denser state, the pores in the rock disappear and displace the free water and physically bound water in the surrounding rock layers, and the vibrating frame slips and sinks. While the rotary-impact tunneling is based on the mechanism of rock crushing, and the two mechanisms are different and the applicable strata are also different.

[0033] This type of formation suitable for vibration tunneling includes the drilling of loose soil layers, sand layers, pebbles, and gravel layers. Building diaphragm walls in deep overburden layers is also often encountered in infrastructure projects such as reservoir dam construction, reinforcement against risks, and subway transportation. At the same time, in the past, when using engineering trenchers to construct diaphragm walls by pouring concrete in formations with high fluidity such as silt, quality problems would be caused by the collapse of the trench wall, shrinkage holes, and mud inclusion.

[0034] The machine of this application avoids the workload of breaking rock and soil in special formations such as corresponding pebbles and gravel, and the rock strata around the trench wall are intact with low damage, and the pouring of the diaphragm wall is completed in a timely manner. And the placement of the casing solves the problem of building a large-depth continuous anti-seepage wall under the condition of non-excavation construction in fluid formations; therefore, the technology of this application also provides an effective equipment for difficult works and sections in dam reinforcement against risks, especially for building a large-depth anti-seepage diaphragm wall in specific deep overburden layers. The equipment has the characteristics of being relatively lightweight and is conducive to water operations.

[0035] 2) When encountering hard rock formations, bedrock, or other formations unsuitable for vibration tunneling, the equipment of the technology of this application can also be combined with the applicant's previous patented technology "A Suspended Multi-bit Rotary-Impact Combined Tunneling Engineering Trencher" (Patent No. ZL 2018 2 0980721.7) to adopt a unified main machine and hoisting device, adjust the pressure and flow rate of the power source, and timely replace the guiding frame equipped with an impact-rotary tunneling device that is adapted to the above-mentioned vibration grooving section (the net thickness of its tunneling section size is the same as the thickness of the vibration grooving section) to carry out tunneling in the way of impact-rotary rock breaking.

[0036] 3) This application is connected with the original multi-bit rotary-impact grooving technology applied by the applicant earlier to deal with building diaphragm walls in various complex geological environments, optimize the tunneling mechanism, improve the tunneling efficiency, and create technical and equipment conditions for the anti-seepage reinforcement of reservoir dam foundations and for building large-span underground transportation and shipping tunnel projects that cross river and water areas without damming and cutting off the flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of an embodiment of this application;

[0038] Figure 2 It is a schematic diagram of the structure of the vibration grooving and concrete pouring device of Embodiment 1 of this application;

[0039] Figure 3 Figure 2 Side sectional view;

[0040] Figure 4 It is a schematic diagram of the hammer-anvil structure in Embodiment 1 of this application;

[0041] Figure 5 is Figure 4 Schematic diagram of the middle lock-opening connection device;

[0042] Figure 6 is Figure 5 A - A sectional view;

[0043] Figure 7 Schematic diagram of the connection between the vibration tunneling frame and the trench wall casing in Embodiment 1 of the present application;

[0044] Figure 8 Side sectional view of the connection state between the vibration tunneling frame and the trench wall casing when the trench wall casing descends in Embodiment 1 of the present application;

[0045] Figure 9 Side sectional view of the connection state between the vibration tunneling frame and the trench wall casing when the trench wall casing ascends in Embodiment 1 of the present application;

[0046] Figure 10 Schematic diagram of the structure of the rotary - impact - vibration tunneling device in Embodiment 2 of the present application;

[0047] Figure 11 Schematic diagram of the structure of the rotary - impact tunneling device in Embodiment 3 of the present application;

[0048] Figure 12 is Figure 11 Side sectional view;

[0049] Figure 13 Schematic diagram of the adaptation of the vibration trench forming and rotary trench forming groove cross - sections in Embodiment 3 of the present application.

[0050] In the figure: 1. Hoisting equipment; 2. Traveling device; 3. Vibration tunneling frame; 4. Deviation correction device; 5. Vibrator; 6. Pointed - bottom triangular prism; 7. Frame cross - beam; 8. Frame vertical beam; 9. Bottom beam; 10. Hammer - anvil structure; 10 - 1. Impact hammer; 10 - 2. Anvil seat; 10 - 3. Lock - opening connection device; 10 - 4. Anvil column; 10 - 5. Plug column; 10 - 6. Chute; 11. Trench wall casing; 12. Trench; 13. Upper movable block; 14. Lower movable block; 15. Limit stop block; 16. Fixed stop block; 17. Drill bit transmission shaft; 18. Tapered roller bearing; 19. Straight - tooth gear; 20. Hydraulic motor; 21. Installation locking washer; 22. Sealing cover; 23. Protective cover; 24. Main drill bit; 25. Impact hammer; 26. Auxiliary drill bit; 27. Mud circulation system; 28. Vibration damping device; 29. Push - pull mechanism; 30. Return spring. Detailed implementation manners

[0051] The present application will be further clarified below with reference to the accompanying drawings and specific embodiments. Embodiment

[0052] AsFigures 1-9 As shown in the figure, this embodiment provides a device for constructing a diaphragm wall by hanging vibration tunneling. The structure of this embodiment is a machine that can convert between impact vibration grooving and pure vibration grooving, including a traveling device 2 with a hoisting device 1 and a power system, and a monitoring device; the traction end of the hoisting device is suspended with a vibration grooving and concrete pouring device, and the vibration grooving and concrete pouring device includes a vertical vibration tunneling frame 3, an exciter 5, a hammer-anvil structure 10, and a guiding and deviation correcting device 4; the exciter 5 is installed on the frame cross beam 7 inside the vibration tunneling frame 3, and the frame cross beam 7 and the bottom beam 9 are connected by frame vertical beams 8. The deviation correcting device 4 is installed on the vibration tunneling frame 3. This embodiment is based on the mechanism of vibration tunneling, and its structure and principle are as described in the background technology above.

[0053] In this embodiment, by adjusting the connection state between the vibration tunneling frame 3 and the exciter 5, and by regulating the oil pressure and flow rate of the main engine power source and adjusting the excitation frequency of the exciter, different tunneling mechanisms of impact-vibration and pure vibration tunneling are formed. The specific structure and working mechanism are as follows:

[0054] The hammer-anvil structure 10 is arranged between the exciter 5 and the vibration tunneling frame cross beam 7; the hammer-anvil structure consists of a protruding hammer 10-1 at the bottom of the exciter, an anvil seat 10-2 on the top surface of the frame cross beam 7, and a locking and unlocking connection device 10-3 located between the protruding hammer and the anvil seat;

[0055] The locking and unlocking connection device 10-3 of the hammer-anvil structure includes: a return spring 30 and its pin shaft arranged between the exciter base plate and the anvil seat base plate, and the protruding hammer 10-1 fixed at the lower center position of the exciter base plate; a chute 10-6 is horizontally opened on the anvil seat base plate, and a movable anvil 4 is arranged in the chute, and one end of the movable anvil is controlled by a push-pull mechanism 29; an anvil column 10-4 and a plug column 10-5 are arranged on the movable anvil. In this embodiment, the height of the anvil column is less than the height of the plug column.

[0056] When the anvil column moves below the protruding hammer, the vertical distance between the anvil column and the protruding hammer corresponds to the vibration impact amplitude. Under the drive of hydraulic pressure or electricity, the movable anvil is moved to align the anvil column with the protruding hammer under the exciter base, and the protruding hammer and the anvil column make up and down impacts within a limited amplitude range.

[0057] When the plug column moves below the protruding hammer, the top of the plug column abuts against the lower end of the protruding hammer, blocking the hammer-anvil gap, and the hammer-anvil structure is locked.

[0058] Conversion between pure vibration and impact vibration working mechanisms:

[0059] When the lock and start connection device is locked, a rigid connection state is formed between the vibration tunneling frame and the vibrator. The gap between the hammer and the anvil is sealed, and they do not collide with each other. The vibrator directly transmits the vibration energy to the vibration tunneling frame, generating corresponding deformation and displacement by exciting radial compression and tensile waves on the surface of the vibration tunneling frame. By adjusting the oil pressure and flow rate of the main engine power source, the frequency of the vibrator is correspondingly increased, and the vibration wave of the vibration tunneling frame is applied to the surrounding rock and soil.

[0060] When the lock and start connection device is opened, an impact occurs between the hammer and the anvil. The excitation frequency of the vibrator is adjusted, and the vibrator and the hammer-anvil structure combine to transmit the vibration energy to the vibration tunneling frame in an impact-vibration manner. The vibration tunneling frame transmits the vibration wave and transfers the impact force of the collision between the hammer and the anvil to the rock and soil around and at the bottom of the frame. A relative slip occurs between the vibration frame and the rock formation, and it enters the rock formation.

[0061] As a preference of this embodiment, the vibration tunneling frame further includes a slurry and concrete conveying pipeline system 27 and a grooved wall casing 11 to timely complete the pouring and vibration compaction of the diaphragm wall concrete under complex geological conditions of deep overburden layers.

[0062] As Figures 2-9 shown: In the range of strata with strong fluidity, a connecting device for the grooved wall casing 11 is provided on the vibration tunneling frame 3. Grooves 12 are distributed on the grooved wall casing 11. The clamping device on the vibration tunneling frame 3 rotates by an angle under the action of an electromagnetic or hydraulic control system, and combines with the gravity of the vibration tunneling frame 3 to make the rotating block of the clamping device buckle tightly. During the vibration sinking, the grooved wall casing 11 is positioned in the range of strata prone to collapse or flow, and the clamping device is controlled to leave the grooved wall casing 11 in the strata at the corresponding depth. The slurry circulation-concrete perfusion pipeline system 27 is provided with a check valve at the outlet of the bottom beam. Slurry and concrete can enter the bottom of the groove unidirectionally, while the slurry and gravel at the bottom of the groove will not enter the pipeline.

[0063] As a further preference of this embodiment, the connecting device of the grooved wall casing is composed of an upper movable block 13, a lower movable block 14 and a limit stop block 15 driven by power to rotate and arranged on the vibration tunneling frame, and a fixed stop block 16 arranged in the groove 12 of the movable casing. An electromagnetic or hydraulic drive control system is provided on the vibration tunneling frame to control the rotation of the upper movable block and the lower movable block relative to the vibration tunneling frame, so as to connect the grooved wall casing and the vibration tunneling frame as a whole or separate them from each other.

[0064] When the vibrating tunneling frame moves the slurry wall casing downward, control the lower movable block to rotate outward and clamp the slurry wall casing, while the upper movable block retracts inward. When the vibrating tunneling frame moves the slurry wall casing upward, control the upper movable block to rotate outward and clamp the slurry wall casing, while the lower movable block retracts inward. In this way, when unclamping is required, the frame and the casing can move relatively up and down so as to retract the clamped movable block inward.

[0065] By operating the control system to drive the clamping device, the rotating block of the vibrating tunneling frame is screwed into the groove of the slurry wall casing and then tightly clamped, and transmits vibration waves, gravity and pulling force to the slurry wall casing, so that the slurry wall casing and the vibrating tunneling frame vibrate and sink or be pulled out together; when encountering a formation range with strong fluidity, control the rotating block to rotate away from the groove of the slurry wall casing to unclamp, and leave the slurry wall casing in the corresponding position to protect the stability of the specific formation slurry wall.

[0066] As a preference of this embodiment, the bottom end of the vibrating tunneling frame is a pointed-bottom triangular prism 6 to reduce the resistance of vibration sinking. By adjusting the tension of the main machine suspension wire rope, control the weight of the frame, and combine the deviation correction device push plate adjustment while guiding by gravity to maintain the verticality of the trench hole. During the trench forming process, after vibrating and sinking a certain distance (such as 0.5 meters) each time, vibrate and pull out upward for a certain distance (such as 0.3 meters), and repeat this vibration continuously to form a trench downward. When pulling out the tunneling device upward, also vibrate up and down repeatedly to make the trench wall rock and soil dense and stable. At the same time, in the trench forming process of the technology of this application, a special trench hole wall protection technology is adopted.

[0067] The vibrating trench forming and concrete pouring device of the technology of this application is different from the continuous steel pipe sinking process within the full trench depth range. During the tunneling process, the formed trench wall above the guide frame has no steel pipe support. During the vibrating trench forming process, to ensure no collapse, slurry wall protection is adopted, and a suitable wall protection slurry is injected into the trench hole and supplemented in a timely manner. The quality of the slurry is maintained through slurry circulation. Since the vibrating drilling is extrusion and compaction and there is no need to suck out the rock debris, there is no need for reverse circulation slag suction. The corresponding pipeline is only the slurry channel required for slurry wall protection, and there is no need to set a slurry discharge and circulation pipeline on the drill tool. Only a pipeline connecting the upper and lower wall protection slurries is required. When the drill tool is pulled out, slurry is immediately supplemented below.

[0068] As a preference of this embodiment, a vibration damping device 28 is provided at the top of the vibrating tunneling frame and is connected to the main machine suspension device through the vibration damping device. To prevent the vibration effect from being transmitted to the hoisting mechanism through the suspension end of the traction end of the hoisting equipment and avoid the influence of vibration on the main machine lifting device.

[0069] Preferably, in the impact-vibration working condition, the vibration frequency of the vibrator is adjusted to the range of 17 - 25 Hz, and in the pure vibration working condition, the vibration frequency of the vibrator is adjusted to the range of 25 - 40 Hz. In this example, the design of mechanical related components, including vibration design (the relationship among excitation, system and response, and ensuring that the structure avoids resonance), can be designed and optimized through dynamic simulation and actual measurement of instruments for the vibration frame structure, vibrator and the corresponding formation effect.

[0070] The impact-vibration tunneling in this embodiment relies on the vibration wave to extrude and sink the surrounding soil, which is different from the concept of the rotary-impact bit for breaking rock and soil. The surface plate of the vibration tunneling frame, including the bottom surface, forms a groove based on the mechanism of vibration extrusion, while the applicant's previous multi-bit rotary-impact grooving machine discharges the crushed egg and gravel as slag during grooving. The two mechanisms are different. Vibration tunneling has low power consumption and high tunneling efficiency in applicable strata such as egg and gravel.

[0071] During the above vibration-impact tunneling operation process, according to the geological conditions, the vibration frequency can be changed by adjusting the pressure and flow of the main engine power source and the eccentric moment of the vibrator, so as to complete different tunneling states of pure vibration tunneling or impact-vibration. Embodiment

[0072] A vibration-impact-rotation suspended tunneling device for constructing a diaphragm wall provided in this embodiment has a basic structural composition similar to that in Embodiment 1, except that: in this embodiment, the machine is a rotary tunneling device with a rotary bit installed under the vibration tunneling frame; as Figure 10 shown: The hydraulic vibrator 5 is connected to the cross beam 7 of the vibration frame by a hammer-anvil structure 10. A power transfer case driven by a spur gear 19 is provided under the bottom beam 9 of the frame to drive the main bits 24 arranged in groups; the drill bit drive shafts 17 within each group are connected by a power transfer case arranged in the vibration tunneling frame 3 and are rotated by the same low-speed plunger hydraulic motor 20. The main bit 24 is arranged under the pyramid bottom of the frame. Tapered roller bearings 18 are provided between the rotary drill pipe and the top and bottom of the transfer case, and mounting lock washers 21 are respectively arranged outside the tapered roller bearings 18. The mounting lock washers 21 are provided to position and lock the installation of the tapered roller bearings 18. A seal cover 22 is provided at the bottom of the tapered roller bearings, drill pipe and power transfer case, and a protective cover 23 is provided outside the seal cover to prevent muddy water from entering the power transfer case.

[0073] Adjust the oil pressure and flow of the main engine power source to make the vibration frequency of the vibration device in the range of 17 - 25 Hz to achieve the drilling mechanism of rotation-impact-vibration and its combination.

[0074] Preferably, a vibration damping device 28 is provided at the top of the vibration tunneling frame.

[0075] This embodiment mainly realizes a rotary-impact-vibration combined tunneling mechanism, which is applicable to grooving in hard-to-drill rocks such as gravel-containing dry weathered crusts and gravel-gravel layers, and constructing diaphragm walls in deep overburden layers of foundations. These strata are often encountered in projects such as the construction of reservoir dams, reinforcement against risks, and some large-scale water conveyance and shipping tunnels that cross deep overburden layers of riverbeds. In actual engineering construction, the tunneling and grooving, slurry wall protection, and grooving cylinder retention technologies of this embodiment are the same as those of Embodiment 2 and will not be elaborated here. This embodiment adopts a rotary-impact-vibration grooving structure, with impact-vibration and at the same time applying to the rotary bit through the bit transmission shaft in the rotary power transfer box horizontally arranged in the frame. By adjusting the parameters of the mechanical main engine power source, the vibration frequency of the vibrator is set in the range of 17 - 25 Hz.

[0076] This embodiment mainly realizes a rotary-impact-vibration combined tunneling mechanism, optimizing the tunneling efficiency in applicable strata and constructing diaphragm walls in deep overburden layers of foundations. In actual engineering construction, the tunneling and grooving, slurry wall protection, and grooving cylinder retention technologies of this embodiment are the same as those of Embodiment 2 and will not be elaborated here. Embodiment

[0077] The vibration grooving and concrete pouring device of a suspended vibration-rotation-impact combined tunneling diaphragm wall construction machine disclosed in this embodiment can be connected with the impact-rotation tunneling device of the "A Grooving Machine with a Suspended Multi-bit Impact-Rotation Tunneling Device" previously applied by the applicant, as Figures 11-12 shown, each playing its own advantages.

[0078] In the original patent grooving machine, a hydraulic impact hammer 25 is provided in the guiding frame, and its drill rod impacts a group of rotary-impact bits horizontally arranged in the guiding frame and driven to rotate by a reduction gearbox, including a main bit 24. An auxiliary bit 26 is also provided in the triangular area outside the main bit within the groove cross-section projection. The drill rods of the main bit and the auxiliary bit are connected to the power transfer box horizontally arranged in the guiding frame and are driven to rotate by a hydraulic motor. The diameters of the main and auxiliary bits are determined according to the set grooving thickness, so that the vibration tunneling frame can correspond to the grooving dimensions of the impact-rotation tunneling frame.

[0079] In actual construction, by adjusting the relevant parameters of the mechanical main engine power source, the impact frequency of the impact hammer is in the range of 2 - 12 Hz. When entering the bedrock or strata not suitable for vibration tunneling, it is replaced with an impact-rotation tunneling frame and constructed by the method of rotary-impact crushing rocks.

[0080] Figure 13It is a schematic diagram of the grooving section. Through the adaptation of the grooving section, a unified main machine and suspension device are adopted. By replacing two types of frameworks, the conversion of different tunneling methods of vibration extrusion tunneling for grooving and impact crushing rock for grooving is implemented to cope with various complex strata. With complementary functions, different tunneling mechanisms are adopted in the strata they are suitable for to optimize the tunneling efficiency.

[0081] The above are only the preferred implementation manners of the present application. Without departing from the principle of the present application, several improvements can also be made, and these improvements should also be regarded as the protection scope of the present application. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present application.

Claims

1. A device for constructing a diaphragm wall by suspended vibration tunneling, comprising a traveling device with a hoisting device and a power system, and a monitoring device; the traction end of the hoisting device suspends a vibration trench forming and concrete pouring device, characterized in that, The vibration trench forming and concrete pouring device includes a vertical vibration tunneling frame, an exciter, a hammer-anvil structure and its locking and unlocking connection device, a guiding and deviation correcting device, a mud circulation pipeline system and a concrete pouring pipeline system; The exciter is installed above the inner cross beam of the vibration tunneling frame, and the hammer-anvil structure and its locking and unlocking connection device are arranged between the exciter and the cross beam of the vibration tunneling frame; The hammer-anvil structure consists of a protruding hammer at the bottom of the exciter, an anvil seat on the top surface of the frame cross beam, and a locking and unlocking connection device located between the protruding hammer and the anvil seat; When the locking and unlocking connection device is locked, a rigid connection state is formed between the vibration tunneling frame and the exciter, the gap between the hammer and the anvil is sealed, and they do not collide with each other. The exciter directly transmits the vibration energy to the vibration tunneling frame, generating corresponding deformation and displacement by exciting compression and tensile waves on the surface of the vibration tunneling frame. By adjusting the oil pressure and flow rate of the main engine power source, the frequency of the exciter is adjusted accordingly, and the vibration wave effect of the vibration tunneling frame is applied to the rock and soil around and at the bottom of the frame; When the locking and unlocking connection device is opened, an impact occurs between the hammer and the anvil. By adjusting the excitation frequency of the exciter, the exciter and the hammer-anvil structure transmit the vibration energy to the vibration tunneling frame in an impact-vibration manner. The vibration tunneling frame transmits the impact-vibration wave effect to the rock and soil around and at the bottom of the frame. Relative slip occurs between the vibration tunneling frame and the rock formation, and it enters the rock formation. After the trench is formed, concrete is poured in a timely manner through the mud circulation pipeline system and the concrete pouring pipeline system.

2. The device for constructing a diaphragm wall by hanging vibration tunneling according to claim 1, characterized in that: The locking and unlocking connection device of the hammer-anvil structure includes: A return spring and its pin shaft arranged between the base plate of the exciter and the base plate of the anvil seat, and a protruding hammer fixed at the lower center position of the base plate of the exciter; A chute is horizontally opened on the base plate of the anvil seat, and a movable anvil is arranged in the chute. An anvil column and a plug column are fixedly arranged on the movable anvil, and the height of the anvil column is less than the height of the plug column: The vertical distance between the anvil column and the protruding hammer corresponds to the vibration impact amplitude. Under the drive of hydraulic or electric power, the movable anvil is moved to align the anvil column with the protruding hammer under the base of the exciter, and the protruding hammer and the anvil column perform up and down impacts within a limited amplitude range; When the plug column moves to the lower part of the protruding hammer, the top of the plug column abuts against the lower end of the protruding hammer, sealing the hammer-anvil gap, and the hammer-anvil structure is locked.

3. The device for constructing diaphragm walls by hanging vibration tunneling according to claim 1, characterized in that: The vibration tunneling frame further includes a rotary power transfer box horizontally arranged inside the vibration tunneling frame and drill bits grouped at the bottom of the vibration tunneling frame; the drill bit drive shafts in each group are connected by a spur gear power transfer box and are driven to rotate by the same power drive device; a rotary-impact-vibration tunneling mechanism is formed by adjusting the oil pressure, flow rate of the main engine power source and the excitation frequency of the exciter.

4. The device for constructing a diaphragm wall by hanging vibration tunneling according to claim 1, wherein: It also includes a groove wall protection cylinder and a retaining movable protection cylinder connection structure arranged outside the vibration tunneling frame to play a role in protecting the stability of the groove wall in a formation with large fluidity, and timely complete the pouring and vibration compaction of the concrete for the diaphragm wall under complex geological conditions of deep overburden layers; The described retaining movable casing connection structure is a clamping device distributed at the connection between the vibrating tunneling frame and the groove opened in the trench wall casing; By operating the control system to drive the clamping device, the rotating chuck of the vibrating tunneling frame is screwed into the trench of the trench wall casing and then tightly fastened, and transmits vibration waves, gravity and pulling force to the trench wall casing, so that the trench wall casing and the vibrating tunneling frame vibrate and sink or be pulled out together; when encountering a formation with strong fluidity, control the clamping device to rotate away from the trench of the trench wall casing and release the buckle, and leave the trench wall casing at the corresponding position to protect the stability of the formation trench wall.

5. The device for constructing diaphragm walls by hanging vibration tunneling according to claim 4, characterized in that: The clamping device is composed of an upper rotating chuck, a lower rotating chuck and a limit stop block driven by power to rotate on the vibrating tunneling frame, and a fixed stop block arranged in the trench of the trench wall casing; an electromagnetic or hydraulic drive control system is arranged on the vibrating tunneling frame to control the rotation of the upper rotating chuck and the lower rotating chuck relative to the vibrating tunneling frame, so as to connect or separate the trench wall casing and the vibrating tunneling frame as a whole; When the vibrating tunneling frame drives the trench wall casing to move downward, the lower rotating chuck rotates outward to clamp the trench wall casing, and the upper rotating chuck retracts inward; When the vibrating tunneling frame drives the trench wall casing to move upward, the upper rotating chuck rotates outward to clamp the trench wall casing, and the lower rotating chuck retracts inward.

6. The device for constructing a diaphragm wall by hanging vibration tunneling according to claim 1, characterized in that, A vibration damping device is arranged at the top of the vibrating tunneling frame, and the vibrating tunneling frame is connected to the suspension end of the traction end of the hoisting equipment through the vibration damping device.

7. The device for constructing a diaphragm wall by hanging vibration tunneling according to claim 1, characterized in that, The concrete pouring pipeline system includes a pumped concrete injection interface installed on the upper part of the vibrating tunneling frame, a pouring interface installed on the lower part, and a pipeline connecting the upper and lower interfaces.

8. A grooving method for a device for constructing a diaphragm wall by suspended vibration tunneling, using the device according to any one of claims 4-5, characterized in that, When the device pours concrete, during pouring, repeatedly pull out and sink the vibrating tunneling frame to compact the concrete by using the vibration of the frame, or vibrate and extrude the concrete into the trench wall rock and soil layer to expand the cross-section of the concrete diaphragm wall; In the range of retaining the trench wall casing, while pouring concrete starting from the bottom end of the trench wall casing, as the concrete pouring surface rises, gradually pull out the trench wall casing until the trench wall casing is lifted out of the ground after the concrete pouring in the soft flowing formation range is completed; During the trench forming process, mud is transported through the mud circulation pipeline system, and the formed trench wall during the tunneling process can be protected by mud. During the tunneling process, the vibrating tunneling frame is controlled by the hoisting equipment to continuously repeat tunneling downward to a certain depth and then moderately pulling out upward by a certain part, and continuously vibrating up and down, so as to vibrate and compact the trench wall during the tunneling process to strengthen the trench wall and prevent it from collapsing; After reaching the designed trench forming depth, then concrete is poured through the concrete pouring pipeline system.

9. The grooving method of the device for constructing diaphragm walls by hanging vibration tunneling according to claim 8, characterized in that: During the trench forming construction, a unified main machine and suspension device are adopted, the pressure and flow rate of the power source are adjusted, and the frame structure below the suspension device is replaced in a timely manner according to different formation conditions. The vibrating tunneling type frame or the multi-bit rotary-impact combined tunneling type frame adapted to the trench forming size is respectively adopted to implement the conversion of different tunneling mechanisms of vibrating extrusion tunneling and impact crushing of rock to form a trench.

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