Split portable static pressure grouting reinforcement equipment

Abstract

This utility model discloses a split-type portable static pressure grouting reinforcement device, including a penetration section and a grouting section. The penetration section includes a power unit, a penetration device, and a reaction device. The penetration device includes a hydraulic cylinder that drives each penetration rod to press downwards. The power unit provides power to the hydraulic cylinder. The reaction device includes a crossbeam that fixes the hydraulic cylinder. The crossbeam is supported on the ground by multiple telescopic legs, and each leg is connected to the ground by a sleeper. The portion of the crossbeam located outside the legs is provided with multiple ground anchors, which are used to tighten the device to the ground. The grouting section includes all the penetration rods and a grouting pipe located at the bottom of the first penetration rod that is pressed in. After all the grouting pipes are pressed into the soil, the upper end of the last penetration rod that is pressed in is connected to a mud pump and a mixer in sequence through the grouting pipe. In this utility model, each device in the penetration section and the grouting section can be disassembled to a portable size and weight, and the split-type transportation makes it more convenient to carry.

Description

Technical Field

[0001] This utility model relates to the field of soil reinforcement technology, and in particular to a split-type portable static pressure grouting reinforcement device. Background Technology

[0002] Static pressure grouting is a commonly used grouting reinforcement technology both internationally and domestically. It primarily utilizes pressure and electrochemical principles to inject grout into the soil and rock mass through filling, compaction, and permeation. This process replaces moisture and gas between soil particles and in rock fissures, effectively increasing the strength of the soil and rock mass after the grout solidifies. It is suitable for grouting reinforcement of soft soil, cohesive soil, silt, and sandy soil layers, but not for grouting reinforcement of gravelly soil or soil containing many large stones.

[0003] Currently, the main method for forming grouting holes is the drilling method. This method uses a geological drilling rig or a vibratory drilling rig to form the hole. After setting a grouting pipe in the borehole and sealing the hole with a grout stop plug, pressure grouting is performed to achieve the purpose of soil reinforcement.

[0004] Commonly used geological drilling rigs or vibratory drilling rigs are often subject to site constraints during the grouting hole drilling process due to their large size and heavy weight. The main types of restricted sites are:

[0005] (1) For sites with a net height of less than 2.0m or a net width of less than 1.0m, existing drilling rigs cannot enter the site to form holes;

[0006] (2) The surface soil of the site is relatively loose. After the steel plate is laid on the surface, the equipment can enter the site to drill holes, but it is inconvenient to move and the grouting points are limited. It is often impossible to reinforce the predetermined reinforcement area, resulting in poor grouting reinforcement effect.

[0007] (3) Under inclined sites, existing geological drilling rigs, vibratory drilling rigs and large integrated grouting equipment often cannot be installed under inclined sites for safety reasons.

[0008] Meanwhile, after the grouting hole is formed, geological drilling rigs or vibratory drilling rigs often need to add a grout stopper before grouting can begin, which is a cumbersome and inefficient process.

[0009] While the grouting equipment for the whole-hole integrated grouting process does not require a stop plug, it is only suitable for work sites with convenient transportation, flat terrain, and vehicular access. Its use is often limited in complex environments.

[0010] Currently, the grouting equipment used in grouting hole formation methods or integrated grouting processes mainly includes the following types:

[0011] Existing solution 1, utility model patent CN209397586U, discloses a deep static pressure grouting structure for existing buildings. The grouting pipe has one end connected to a grouting pump and the other end connected to a grouting device. A hydraulic static probe is fixed to the building's base plate and connected to the grouting pipe, used to press the grouting device on the grouting pipe to a set depth. The grouting device includes a reamer, a grouting section, and a cone tip. The reamer is located at both ends of the grouting section, and the cone tip is located on the outside of the lower reamer. Multiple grouting holes are spaced apart on the grouting section, and the maximum outer diameter of the reamer is larger than the outer diameter of the grouting section. This provides a small-sized, simple-to-operate deep static pressure grouting structure for existing buildings.

[0012] Existing solution 2, utility model patent with publication number CN115450218A, discloses a method for using a static pressure grouting pipe device for vibratory driving of steel pipe piles, including a movable core tube grouting device, a static cone penetration test device or an anchor rod static pressure device, and a static cone penetration test probe; the lower end of the static cone penetration test probe is equipped with the movable core tube grouting device, and two or more movable core tube grouting devices and corresponding static cone penetration test probes are statically pressed into the steel pipe pile to the required depth outside the vertical projection range of the pipe wall through the static cone penetration test device or the anchor rod static pressure device.

[0013] Existing solution 3, utility model patent with publication number CN116044455A, discloses a grouting system for directional reinforcement of tunnels. The drill rod is set as a hollow rod body, which directly serves as the grouting pipe, and the drill bit serves as the grouting nozzle. During construction, only one drilling is required, which can greatly improve construction efficiency and shorten the construction cycle of tunnel grouting reinforcement. At the same time, by setting a control pipe between the drill bit and the drill rod, the grout outlet position can be changed by adjusting the position of the control pipe, thereby realizing the switching between different grouting methods and meeting the needs of different soil layers.

[0014] Existing solution 4, utility model patent with publication number CN118110419A, discloses an integrated drilling and injection device for all-space applications, including a walking mechanism, a drilling and injection mechanism, a rod-changing mechanical arm on one side of the drilling and injection mechanism, an adjustment mechanism connected to a platform, a platform connected to a support platform via a drilling moving mechanism, a power mechanism fixed on the support platform, a drill bit detachably connected to the output shaft of the power mechanism, a first drill bit clamping mechanism and a second drill bit clamping mechanism at the end of the platform, the second drill bit clamping mechanism being located away from the power end and fixedly connected to the platform, the first drill bit clamping mechanism being slidably connected to an arc-shaped guide rail on the platform, and the first drill bit clamping mechanism being connected to a rotation drive component of the platform to achieve rotation around the output shaft axis of the power mechanism.

[0015] Existing solution 5, utility model patent with publication number CN221096548U, discloses a grouting device for geotechnical engineering, including a fixed plate, a handrail, a support column, a fixed plate, a support component, a moving component, a grouting component, and a depth adjustment component; the handrail is located at the top of the fixed plate, the support column is located at the bottom of the fixed plate, the fixed plate is located at the bottom of the support column, the support component is located at the bottom of the fixed plate, the moving component is located at the bottom of the support component, the grouting component is located at the top of the fixed plate, and the depth adjustment component is located at the top of the fixed plate.

[0016] Analysis of the above five technical solutions shows that:

[0017] The problems with the existing scheme 1 are: (1) Although the equipment is small in size, the components cannot be disassembled, and it is inconvenient to move in a restricted area; (2) The grouting device is specially made, and the equipment is not very versatile; (3) The equipment is a deep static pressure grouting structure for existing buildings, and there are few application scenarios.

[0018] The problems with the existing scheme 2 are: (1) Common static cone penetration testing equipment or anchor bolt static pressure equipment are large in size and inconvenient to move in restricted areas; (2) Due to the large size of the equipment, only one grouting point is allowed to be grouted at each grouting point and its surrounding area, which cannot be grouted over a large area at the same time, resulting in low grouting efficiency.

[0019] The problem with the existing solution 3 is that although the grouting process only requires drilling once, which improves construction efficiency, it still uses the method of directional drilling. Due to the large size of the equipment, directional drilling is inconvenient to move, and the equipment cannot be put into operation in narrow and low-clearance sites.

[0020] The problem with the existing solution 4 is that the equipment working space of the all-space drilling and grouting integrated device is large. Although it can achieve grouting reinforcement with multiple functions at multiple angles in the whole space, the equipment is heavy. For narrow, low-headroom and soft foundation sites, the equipment cannot enter the site for operation.

[0021] The problem with the existing solution 5 is that the geotechnical grouting device is pushed to the grouting site by wheels, which makes it impossible to push on soft foundations and sloping sites. The equipment is also heavy and cannot be used on soft foundations and sloping sites.

[0022] Therefore, existing grouting reinforcement equipment and construction methods cannot meet the requirements of underground operations in confined spaces, low clearance areas, soft foundations, and sloping sites. How to make static pressure grouting reinforcement equipment small in size, lightweight, flexible, and reliable, and capable of being disassembled into multiple portable parts for separate transport to restricted areas, and then reassembled at the work site, while offering low testing costs, flexible and convenient use, and higher grouting reinforcement efficiency, has become a pressing technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0023] In view of the above-mentioned deficiencies of the prior art, this utility model provides a modular portable static pressure grouting reinforcement device. The purpose is to make the static pressure grouting reinforcement device small in size, light in weight, flexible, and reliable. The entire static pressure grouting device can be disassembled into multiple portable parts, which can be transported separately to restricted sites and then reassembled at the work site. It offers advantages such as low testing costs, flexible and convenient use, and higher grouting reinforcement efficiency.

[0024] To achieve the above objectives, this utility model discloses a split-type portable static pressure grouting reinforcement device, including a penetration part and a grouting part;

[0025] The penetration section includes a power unit, a penetration device, and a reaction force device;

[0026] The power unit is a hydraulic motor that provides power to the hydraulic cylinder of the penetration device;

[0027] The penetration device includes a hydraulic cylinder that drives each of the penetration rods downward into the soil.

[0028] The hydraulic motor is connected to the hydraulic cylinder via an oil pipe, and an operating valve group for controlling the operation of the hydraulic cylinder is provided on the oil pipe;

[0029] The reaction device includes a crossbeam that fixes the hydraulic cylinder;

[0030] The crossbeam is supported on the ground by multiple retractable legs, and each of the legs is provided with a sleeper between it and the ground.

[0031] The portion of the crossbeam located outside the support leg is equipped with multiple ground anchors, which are used to tighten the crossbeam to the ground.

[0032] The upper ends of the plurality of ground anchors located on each side of the crossbeam are fixed to the channel steel set on the corresponding side of the crossbeam, and the corresponding side of the crossbeam is tightened to the ground by tightening the corresponding channel steel;

[0033] The grouting section includes all of the penetration rods and a grouting pipe disposed at the bottom of the first penetration rod that is pressed in.

[0034] After all the grouting pipes have been pressed into the soil and connected in sequence, the upper end of the last grouting rod is connected to the mud pump and the mixer in sequence through the grouting pipe.

[0035] Preferably, the operating valve assembly is mounted on the crossbeam.

[0036] Preferably, each of the penetration rods has a length of 1m and an outer diameter of 36mm;

[0037] Two or more hydraulic cylinders are provided on the crossbeam to surround the movement trajectory of each of the penetration rods;

[0038] The cylinder body of each hydraulic cylinder is fixed to the crossbeam, and the piston rod reciprocates along the movement trajectory of each penetration rod, and is fixed to each penetration rod by a detachable clamp.

[0039] Preferably, the lower end of each of the ground anchors is anchored to a normal sedimentary soil layer.

[0040] More preferably, each of the channel steels is fixed to the crossbeam by a plurality of high-strength bolts;

[0041] The upper end of each of the anchors passes through the corresponding channel steel and is pressed against the top of the corresponding channel steel by a gasket.

[0042] The beneficial effects of this utility model are:

[0043] In this invention, each component in the penetration and grouting parts can be disassembled to a portable size and weight, allowing for separate transport and making it easier to assemble and use them in sequence after being transported to a restricted area.

[0044] This utility model is compact and flexible when disassembled and transported, simple and convenient when assembled and used, provides strong reaction force, can reinforce up to a maximum depth of 70m, and has high grouting reinforcement efficiency.

[0045] This utility model is applicable to the reinforcement of foundation soils such as artificial fill, silty soil, cohesive soil, silty soil and sandy soil, the pile end reinforcement of steel pipe piles and the reinforcement project for the repair of existing buildings.

[0046] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model. Attached Figure Description

[0047] Figure 1 A schematic diagram of an embodiment of the present invention is shown.

[0048] Figure 2 This diagram shows a structural schematic of an embodiment of the present invention, arranged on an inclined site.

[0049] Figure 3 This diagram shows a cross-sectional view of an embodiment of the present invention. Detailed Implementation

[0050] Example: Figures 1 to 3 As shown, the split-type portable static pressure grouting reinforcement equipment includes a penetration section and a grouting section;

[0051] The penetration section includes a power unit, a penetration device, and a reaction device;

[0052] The power unit is a hydraulic motor 1 that provides power to the hydraulic cylinder 3 of the penetration device;

[0053] The penetration device includes a hydraulic cylinder 3 that drives each penetration rod 15 downward into the soil.

[0054] The hydraulic motor 1 is connected to the hydraulic cylinder 3 via the oil pipe 4, and the operating valve group 2 for controlling the operation of the hydraulic cylinder 3 is installed on the oil pipe 4;

[0055] The reaction device includes a crossbeam 5 that fixes the hydraulic cylinder 3;

[0056] The crossbeam 5 is supported on the ground by multiple retractable legs 6, and each leg 6 is provided with a sleeper 7 between it and the ground.

[0057] The portion of the crossbeam 5 located outside the support leg 6 is equipped with multiple ground anchors 8, which are used to tighten the beam to the ground.

[0058] The upper ends of multiple ground anchors 8 located on each side of the crossbeam 5 are fixed to the channel steel 10 set on the corresponding side of the crossbeam 5. The corresponding side of the crossbeam 5 is tightened to the ground by tightening the corresponding channel steel 10.

[0059] The grouting section includes all the penetration rods 15 and the grouting pipe 16 located at the bottom of the first penetration rod 15 that is pressed in.

[0060] After all the grouting pipes 16 have been pressed into the soil and connected in sequence, the upper end of the last grouting rod 15 that has been pressed in is connected in sequence to the mud pump 13 and the mixer 12 through the grouting pipe 14.

[0061] This utility model adopts a set of split portable static pressure grouting reinforcement equipment for use in narrow, low-headroom, soft foundation, and sloping sites. The reinforcement equipment mainly includes a penetration part and a grouting part.

[0062] In practical applications, by controlling the reciprocating motion of the piston of the hydraulic cylinder 3, the penetration rods 15 with grouting pipes 16 at the bottom are pressed into the soil one by one, providing the penetration rods 15 with downward force to overcome the soil resistance.

[0063] The crossbeam 5 is supported on the ground by multiple retractable legs 6 and corresponding sleepers 7, and can adapt to different ground conditions by adjusting the length of each leg 6 and the shape of the corresponding sleeper 7.

[0064] The crossbeam 5 provides support through multiple legs 6 and anchoring force through multiple ground anchors 8, providing a reaction force to the entire penetration device to balance the reaction of penetration resistance on the penetration device, so that the penetration rod 15 can penetrate to the predetermined depth when working.

[0065] The grouting material, including cement slurry, admixtures and water, is mixed evenly by the mixer 12 and flows along the grouting pipe 14 under the pressure of the mud pump 13 through the penetration rod 15 into the grouting pipe 16. Finally, it diffuses into the soil layer that needs to be reinforced through the grouting pipe 16. This penetration rod 15 is compatible with most of the existing grouting pipes of various types, thereby completing the designed grouting reinforcement work.

[0066] In some embodiments, the operating valve assembly 2 is mounted on the crossbeam 5.

[0067] Both the penetration section and the grouting section have a length of 1m and an outer diameter of 36mm for each penetration rod 15.

[0068] The crossbeam 5 moves around the movement trajectory of each penetrating rod 15, and is surrounded by two or more hydraulic cylinders 3.

[0069] The cylinder body of each hydraulic cylinder 3 is fixed to the crossbeam 5, and the piston rod moves back and forth along the direction of the movement trajectory of each penetrating rod 15. Each penetrating rod 15 is fixed by a detachable clamp.

[0070] The lower end of each ground anchor 8 is anchored to a normal sedimentary soil layer;

[0071] The upper ends of multiple ground anchors 8 located on each side of the crossbeam 5 are fixed to the channel steel 10 set on the corresponding side of the crossbeam 5. The corresponding side of the crossbeam 5 is tightened to the ground by pulling the corresponding channel steel 10.

[0072] Each channel steel 10 is vertically fixed to the crossbeam 5 by multiple high-strength bolts 11;

[0073] The upper end of each anchor 8 passes through the corresponding channel steel 10 and is pressed against the top of the corresponding channel steel 10 by a gasket 9.

[0074] This utility model also provides a grouting reinforcement method, which uses the above-mentioned split-type portable static pressure grouting reinforcement equipment for on-site grouting reinforcement, including the following steps:

[0075] Step 1: Level the site and move the equipment. Specifically, first, repair and level the work site, then move the operating valve group 2, hydraulic cylinder 3, oil pipe 4, crossbeam 5, all outriggers 6, all sleepers 7, all ground anchors 8, all gaskets 9, all channel steel 10, all high-strength bolts 11, grouting pipe 16, and penetration rod 15 to the designed location in a narrow, low-headroom, soft, and sloping site; place the hydraulic motor 1, mixer 12, and mud pump 13 in a relatively suitable location.

[0076] Step 2: Assemble the penetration section and grouting section, and level the equipment; specifically: assemble the operating valve group 2, hydraulic cylinder 3, oil pipe 4, crossbeam 5, all outriggers 6, all sleepers 7, all ground anchors 8, all gaskets 9, all channel steel 10, all high-strength bolts 11, grouting pipe 16, and penetration rod 15 in sequence.

[0077] The hydraulic motor 1 is then assembled with the operating valve assembly 2 via the oil pipe 4.

[0078] The operating valve group 2 and the hydraulic cylinder 3 are mounted on the crossbeam 5;

[0079] Place all the legs 6 of the crossbeam 5 on the corresponding sleepers 7;

[0080] All ground anchors 8 are connected and fixed to the corresponding channel steels 10 through the corresponding gaskets 9;

[0081] Each channel steel 10 is connected and fixed to the crossbeam 5 by a corresponding high-strength bolt 11;

[0082] Step 3: Drive in all the penetration rods 15 and grouting pipes 16, and connect them to the reinforcement depth in sequence; connect the lower end of the first penetration rod 15 to the grouting pipe 16, and slowly drive it into the underground soil layer through the penetration device. Then, continue to drive in the next penetration rod 15 until the designed reinforcement depth is reached.

[0083] Step 4: Mix the slurry and inject the slurry; connect the topmost penetrating rod 15 to the slurry pipe 14, pour the grouting material including cement, admixtures and water into the mixer 12 according to the design ratio and mix it evenly. Then, the slurry pump 13 pumps the reinforcing slurry through the slurry pipe 14, all penetrating rods 15 and grouting pipe 16 to the planned reinforcement position.

[0084] Step 5: After reinforcement is completed, pull out all the penetration rods 15 and grouting pipes 16; when the amount of grout injected or the grouting pressure applied reaches the design value, turn off the grout pump 13, stop grouting, pull out all the penetration rods 15 in sequence from the penetration part, and finally pull out the grouting pipes 16 to complete one grouting point.

[0085] In practical applications, leveling the work site can prevent large stones or uneven slopes from affecting equipment handling.

[0086] In some embodiments, the operating valve assembly 2, hydraulic cylinder 3, oil pipe 4, crossbeam 5, all outriggers 6, all sleepers 7, all ground anchors 8, all gaskets 9, all channel steel 10, all high-strength bolts 11, grouting pipe 16, and penetration rod 15 are all transported by gasoline-powered electric flatbed trucks.

[0087] When site conditions do not permit, manual handling shall be used.

[0088] In some embodiments, during step 2, if there is a concrete floor in the site, a portable backpack drill is required to make holes during the installation of each ground anchor 8.

[0089] After assembling the operating valve group 2, hydraulic cylinder 3, oil pipe 4, crossbeam 5, all outriggers 6, all sleepers 7, all ground anchors 8, all gaskets 9, all channel steel 10, all high-strength bolts 11, grouting pipe 16 and penetration rod 15, leveling is required to avoid tilting and affecting the reinforcement effect.

[0090] If the site is sloping, sleepers 17 that match the sloping site must be prepared in advance.

[0091] In some embodiments, if there are multiple reinforcement depths at the same grouting point, the corresponding number of penetration rods 15 are pulled out or added. When the grouting pipe 16 reaches the next designed reinforcement depth, the mud pump 13 is turned on again to start the grouting reinforcement operation.

[0092] In some embodiments, after completing one grouting point, the process moves to the next design point and repeats steps 1 to 5 to complete the reinforcement of all points.

[0093] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A split-type portable static pressure grouting reinforcement device; characterized in that, Includes the penetration section and the grouting section; The penetration section includes a power unit, a penetration device, and a reaction force device; The power unit is a hydraulic motor (1) that provides power to the hydraulic cylinder (3) of the penetration device. The penetration device includes a hydraulic cylinder (3) that drives each penetration rod (15) to press downward into the soil. The hydraulic motor (1) is connected to the hydraulic cylinder (3) via an oil pipe (4), and an operating valve group (2) for controlling the operation of the hydraulic cylinder (3) is provided on the oil pipe (4). The reaction device includes a crossbeam (5) that fixes the hydraulic cylinder (3); The crossbeam (5) is supported on the ground by multiple retractable legs (6), and each of the legs (6) is provided with a sleeper (7) between it and the ground. The portion of the crossbeam (5) located outside the support leg (6) is provided with multiple ground anchors (8), which are used to tighten the beam to the ground. The upper ends of the plurality of ground anchors (8) located on each side of the crossbeam (5) are fixed to the channel steel (10) set on the corresponding side of the crossbeam (5), and the corresponding side of the crossbeam (5) is pulled to the ground by tightening the corresponding channel steel (10); The grouting section includes all the penetration rods (15) and a grouting pipe (16) located at the bottom of the first penetration rod (15) that is pressed in. After all the grouting pipes (16) are pressed into the soil and connected in sequence, the upper end of the last grouting rod (15) is connected in sequence to the mud pump (13) and the mixer (12) through the grouting pipe (14).

2. The split-type portable static pressure grouting reinforcement equipment according to claim 1, characterized in that, The operating valve group (2) is mounted on the crossbeam (5).

3. The split-type portable static pressure grouting reinforcement equipment according to claim 1, characterized in that, Each of the aforementioned penetration rods (15) has a length of 1m and an outer diameter of 36mm; Two or more hydraulic cylinders (3) are provided on the crossbeam (5) around the movement trajectory of each of the penetrating rods (15); The cylinder body of each hydraulic cylinder (3) is fixed to the crossbeam (5), and the piston rod moves back and forth along the direction of the movement trajectory of each penetrating rod (15). Each penetrating rod (15) is fixed by a detachable clamp.

4. The split-type portable static pressure grouting reinforcement equipment according to claim 1, characterized in that, The lower end of each of the ground anchors (8) is anchored to a normal sedimentary soil layer.

5. The split-type portable static pressure grouting reinforcement equipment according to claim 4, characterized in that, Each of the channel steels (10) is fixed to the crossbeam (5) by a plurality of high-strength bolts (11); The upper end of each of the anchors (8) passes through the corresponding channel steel (10) and is pressed against the top of the corresponding channel steel (10) by a gasket (9).

Images