Stirring grouting system and accident oil pool anti-seepage method

Abstract

The invention relates to a stirring grouting system which is carried by a lifting device and is used for controlling the stirring grouting device to vertically downwards stir and cut soil below the earth surface of a target grouting position, and meanwhile, expansive slurry is injected into treated soil, so that the treated soil and the expansive slurry are fully mixed, and an anti-seepage structure is constructed; integration of soil stirring and cutting and soil grouting operation is achieved in the two aspects of the device and the method, and the working efficiency is improved; the accident oil pool anti-seepage method based on the stirring and grouting system is designed, aiming at an accident oil pool which is arranged downwards on the ground and used for collecting oil and water leaked by a fault transformer, on one hand, multi-stage protection is conducted on the accident oil pool, leaked waste oil is efficiently blocked, and on the other hand, waste oil leaked to soil of the accident oil pool is blocked; the method effectively prevents waste oil from further seepage, completes seepage-proofing treatment for the accident oil pool, protects the soil environment around the accident oil pool, makes up for the deficiency of the prior art, and has important application value.

Description

Technical Field

[0001] The invention relates to a stirring grouting system and an anti-seepage method for an accident oil pool, belonging to the technical field of anti-seepage control of accident oil pools. Background Art

[0002] Substations are an indispensable part of the power system as a place where voltage and current are transformed. As one of the important buildings in the substation, the accident oil pool is mainly used to prevent waste oil leakage and damage to the environment after the main transformer equipment is damaged, so as to store the transformer oil. However, due to problems with the accident oil pool drain pipe and construction materials, the accident oil pool may leak, causing serious soil pollution and posing a greater environmental risk to the surrounding environment. When waste oil seeps into the soil, it causes ecological damage, resulting in reduced crop yields and endangering human health.

[0003] At present, the leakage problem of accident oil pools is mainly focused on the optimization of accident oil pool structures and materials. However, for existing accident oil pools, it is very necessary to study how to deal with oil pool leakage and anti-seepage. For example, when an accident oil pool leaks, the waste oil will seep into the soil around the accident oil pool. It is very important to control the waste oil in the area that has been leaked and polluted, and prevent the waste oil from further seepage. And as time goes by, whether the leakage range is still in a trend of expansion also needs to be effectively known. However, the existing treatment measures are difficult to fully solve the above three problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a stirring grouting system which integrates a soil stirring and cutting device and an expansion slurry device to efficiently construct an anti-seepage structure.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: the present invention designs a stirring grouting system, including a lifting and lifting device and a stirring grouting device, wherein the lifting and lifting device includes a lifting bracket, an electric control drum, a cable, and a clamp structure, the lifting bracket is placed on the ground at a target grouting position in a vertical posture, the electric control drum is placed at a preset height position on the lifting bracket, the clamp structure is suspended directly below the electric control drum via a cable, and the electric control drum works to wind the cable to realize the up and down movement of the clamp structure; The front end of the stirring grouting device has a steering wheel. The stirring grouting device is arranged on the clamping structure. The stirring grouting device is driven to move up and down in a vertical posture based on the operation of the electric control drum. The stirring grouting device stirs and cuts the soil at the target grouting position downward and transports the expansive slurry.

[0006] As a preferred technical solution of the present invention: the stirring grouting device includes a grouting pipe, a hollow shaft motor, a main steel pipe, a front end steel pipe, a stirring and cutting blade, a truss, a first connecting plate, a second connecting plate, a third connecting plate, and at least two hydraulic telescopic rods; wherein the first connecting plate, the second connecting plate, and the third connecting plate respectively have through holes penetrating through their two surfaces at the center position of their surfaces, and the inner diameter of the through hole is larger than the outer diameter of the grouting pipe, and the inner diameter of the main steel pipe and the inner diameter of the front end steel pipe are both larger than the outer diameter of the grouting pipe; the truss is erected on the hoop structure, and the two ends of the driving shaft on the hollow shaft motor are open and connected, and the driving shaft The inner diameter of the hollow shaft motor is larger than the outer diameter of the grouting pipe, and the hollow shaft motor is arranged on the truss with its driving shaft in a vertical posture. The bottom end of the driving shaft on the hollow shaft motor is butted against one surface of the first connecting plate, and the other surface of the first connecting plate is connected to one surface of the second connecting plate via the main steel pipe, and the center line of the driving shaft passes through the center of the through hole on the first connecting plate, the center of the through hole on the second connecting plate, and the center line of the driving shaft is colinear with the center line of the main steel pipe in sequence; the position of the control device in each hydraulic telescopic rod facing away from the telescopic rod is respectively hinged to the area between the outer periphery of the corresponding through hole on the other surface of the first connecting plate and the inner periphery of the connected main steel pipe port, and the first The surfaces of the second connecting plates correspond to the positions of the movable ends of the telescopic rods in each hydraulic telescopic rod, and the movable ends of the telescopic rods in each hydraulic telescopic rod pass through the corresponding holes in the second connecting plate, and are hinged to the peripheral area of ​​the through hole on one surface of the third connecting plate. When the telescopic rods in each hydraulic telescopic rod are parallel to the straight line where the main steel pipe is located, the center line of the main steel pipe passes through the center of the through hole of the third connecting plate, one end of the front end steel pipe is connected to the other surface of the third connecting plate, and the center line of the front end steel pipe passes through the center of the through hole of the third connecting plate; the stirring and cutting blades are spirally distributed and connected to the outer periphery of the main steel pipe, and On the outer periphery of the front end steel pipe; one end of the grouting pipe is inserted through the top end of the driving shaft on the hollow shaft motor, and is placed in the front end steel pipe through the first connecting plate through hole, the main steel pipe, the second connecting plate through hole, and the third connecting plate through hole in sequence; based on the synchronous operation of each hydraulic telescopic rod to the same length, the hollow shaft motor drives the connected overall structure to rotate with the straight line where its driving shaft is located as the axis, and the grouting pipe does not rotate; and based on the non-operation of the hollow shaft motor, through the asynchronous operation of each hydraulic telescopic rod, the end of the grouting pipe is driven through the front end steel pipe to achieve an angular rotation relative to the straight line direction where the main steel pipe is located.

[0007] The electric-controlled drum drives the stirring grouting device to move up and down in a vertical posture, and the hollow shaft motor drives the stirring and cutting blades to rotate to stir and cut the soil at the target grouting position, and the expansive slurry is connected to the other end of the grouting pipe and transported to the target grouting position.

[0008] As a preferred technical solution of the present invention: the stirring grouting device also includes a first inner steel pipe, a second inner steel pipe, and each first pulley and each second pulley. The length of the first inner steel pipe is equal to the length of the main steel pipe, the inner diameter of the first inner steel pipe is larger than the outer diameter of the grouting pipe, and the outer diameter of the first inner steel pipe is smaller than the inner diameter of the main steel pipe. The first inner steel pipe is located inside the main steel pipe between the first connecting plate and the second connecting plate. The two ends of the first inner steel pipe are respectively connected to the mutually opposite surfaces between the first connecting plate and the second connecting plate. The center line of the first inner steel pipe and the center line of the main steel pipe are colinear with each other. The grouting pipe passes through the first inner steel pipe. Each first pulley is connected to the outer wall of the grouting pipe for each position on the local section of the grouting pipe corresponding to the first inner steel pipe, and the circular surface of each first pulley is perpendicular to the straight line where the first inner steel pipe is located. As the hollow shaft motor drives the connected structure to rotate, each first pulley contacts and rolls with the inner wall of the first inner steel pipe; each hydraulic telescopic rod is located between the outer side of the first inner steel pipe and the inner side of the main steel pipe. The inner diameter of the second inner steel pipe is larger than the outer diameter of the grouting pipe, and the outer diameter of the second inner steel pipe is smaller than the inner diameter of the front-end steel pipe. One end of the second inner steel pipe is connected to the other surface of the third connecting plate. The second inner steel pipe is located in the front-end steel pipe, and the center line of the second inner steel pipe passes through the center of the through hole of the third connecting plate. Each second pulley is connected to the outer wall of the grouting pipe for each position on the local section corresponding to the second inner steel pipe on the grouting pipe, and the circular surface of each second pulley is perpendicular to the straight line where the second inner steel pipe is located. Each position on the inner wall of the second inner steel pipe corresponding to each second pulley is respectively provided with a slide groove along the inner wall. As the hollow shaft motor drives the connected structure to rotate, each second pulley rolls in the corresponding slide groove on the inner wall of the second inner steel pipe, and the movement of the grouting pipe along the straight line direction where the front-end steel pipe is located is limited by each slide groove on the inner wall of the second inner steel pipe through each second pulley.

[0009] As a preferred technical solution of the present invention: the stirring grouting device also includes a one-way valve, which is arranged in the end of the grouting pipe located inside the front end steel pipe.

[0010] As a preferred technical solution of the present invention: it also includes a preset number of osmotic pressure sensors, each of which is buried at a different height in the soil on the side of the target grouting position, and the vertical distribution of each osmotic pressure sensor covers the depth from the ground to the bottom of the oil pool, and each osmotic pressure sensor detects the osmotic pressure of the soil position where it is set.

[0011] As a preferred technical solution of the present invention: it also includes a slurry preparation device for preparing expansive slurry for delivery to the other end of the grouting pipe, the slurry preparation device includes a water tank, a curing agent storage tank, a mixing barrel, a first motor, a stirring rod, a stirring blade, and two pumps, wherein the water tank and the curing agent storage tank are respectively connected in series to the mixing barrel via pipelines, and each pump is operated to draw water and curing agent from the water tank and the curing agent storage tank to the mixing barrel respectively, the driving end of the first motor is connected to the stirring rod, the side of the stirring rod is connected to the stirring blade, the overall structure of the stirring rod and the stirring blade is placed in the mixing barrel, based on the control of the first motor, the stirring rod and the stirring blade are used to stir the water and curing agent in the mixing barrel, and an output hole is arranged on the stirring rod to connect to the other end of the grouting pipe to deliver the stirred expansive slurry.

[0012] As a preferred technical solution of the present invention: the electric-controlled reel in the lifting and hoisting device includes a motor, a reel, a reducer, and a controller, wherein the controller is connected to the motor via the reducer for control, the motor is connected to the reel, the reel is connected to the cable, and the motor drives the reel to rotate to realize the winding and releasing of the cable.

[0013] As a preferred technical solution of the present invention: it also includes a telescopic hose, which is sleeved on the outer periphery of the overall structure of the local section of the grouting pipe and the local section of each hydraulic telescopic rod between the second connecting plate and the third connecting plate, and the two ends of the telescopic hose are respectively connected to the opposite surfaces of the second connecting plate and the third connecting plate.

[0014] Corresponding to the above, the technical problem that the present invention also needs to solve is to provide an accident oil pool anti-seepage method based on a stirring grouting system, and to achieve efficient anti-seepage protection for the accident oil pool with the designed stirring grouting system.

[0015] In order to solve the above technical problems, the present invention adopts the following technical solutions: the present invention designs an accident oil pool anti-seepage method based on a stirring grouting system, and performs anti-seepage protection on an accident oil pool set downward from the ground for collecting oil and water leaked from a faulty transformer. For a local section of the accident oil pool where the outer side of the oil pool is not connected to the drainage pool, the position of the local section facing the ground is marked as a first anti-seepage wall marking section, and the position of the ground along the outer side of the first anti-seepage wall marking section and with a preset distance greater than 0 from the first anti-seepage wall marking section is marked as a second anti-seepage wall marking section. The accident oil pool anti-seepage method includes applying a stirring grouting system, and performing the following steps for the first anti-seepage wall marking section and the second anti-seepage wall marking section respectively: Step A. The mobile lifting support is set at the starting point of the marked section of the ground cut-off wall, which is defined as the target grouting position, and then proceeds to step B; Step B. Controlling the hydraulic telescopic rods in the stirring grouting device to synchronize to the same length, controlling the electric control drum to drive the stirring grouting device to move in a vertical posture toward the target grouting position on the ground, and controlling the hollow shaft motor to drive the stirring and cutting blades to rotate to stir and cut the soil at the target grouting position, and drilling at the target grouting position until the depth reaches the bottom of the oil pool below the ground. At the same time, the other end of the grouting pipe is connected to the expansive slurry, and the expansive slurry is injected into the soil stirred and cut in the drilled hole to construct an anti-seepage structure, and then proceeding to step C; Step C. Control the hollow shaft motor to stop working, and then control the asynchronous operation of the hydraulic telescopic rods in the stirring grouting device to drive the third connecting plate to change its angle relative to the second connecting plate, that is, drive the bottom end of the grouting pipe to rotate relative to the straight line direction of the main steel pipe through the front steel pipe, connect the expansive slurry from the other end of the grouting pipe, inject the expansive slurry into the soil at the bottom of the borehole, and inject the expansive slurry into the soil around the side of the bottom of the borehole to construct an anti-seepage structure, and then enter step D; Step D. Controlling the hydraulic telescopic rods in the stirring grouting device to synchronize to the same length, and controlling the electric control drum to drive the stirring grouting device to move upward in a vertical posture, and the other end of the grouting pipe continues to be connected to the expansive slurry, and the expansive slurry is injected into the soil in the borehole to solidify the soil, until the stirring grouting device moves upward and exits the borehole, and the soil in the borehole is solidified, the electric control drum is controlled to stop working, and the grouting work of the grouting pipe is controlled to stop, and then enter step E; Step E. Determine whether all positions on the cut-off wall marking section have participated in the processing from step B to step D. If so, the cut-off wall marking section completes the anti-seepage protection of the accident oil pool; otherwise, move the lifting bracket to the adjacent position of the target grouting position along the ground cut-off wall marking section, update the adjacent position as the target grouting position, and then return to step B.

[0016] As a preferred technical solution of the present invention: the accident oil pool also includes a connecting pipe located between the oil pool and the drainage pool connected to its side. Based on the separation of the upper oil and lower water in the oil pool caused by the leakage of the faulty transformer, the lower water flows to the drainage pool through the connecting pipe, and the drainage pool then discharges the water in the drainage pool through an external drainage pipe.

[0017] The stirring grouting system and the anti-seepage method of the accident oil pool described in the present invention adopt the above technical scheme and have the following technical effects compared with the prior art: The present invention designs a stirring grouting system, which is designed to be carried by a lifting device and control the stirring grouting device to stir and cut the soil below the surface of the target grouting position vertically downward, and at the same time, the expansive slurry is added to the treated soil to achieve full mixing of the treated soil and the expansive slurry, and to construct an anti-seepage structure. The integration of soil stirring and cutting and soil grouting operations is realized in both the device and the method, and the work efficiency is improved; and an accident oil pool anti-seepage method based on the stirring grouting system is designed. For the accident oil pool set below the ground for collecting oil and water leaked by the faulty transformer, a first anti-seepage wall marking section and a second anti-seepage wall marking section are sequentially constructed along the outer surface of the accident oil pool. On the one hand, multi-level protection is performed on the accident oil pool to effectively block the leakage of waste oil. On the other hand, the waste oil that has leaked into the soil from the accident oil pool is blocked to effectively prevent further outflow of the waste oil, and the anti-seepage treatment of the accident oil pool is efficiently completed to protect the soil environment around the accident oil pool, effectively make up for the current technical deficiencies in this field, and has important application value; In a stirring grouting system designed by the present invention, a stirring grouting device is designed to achieve stirring, cutting and grouting of the soil, and an angle changing structure is designed for the front end of the stirring grouting device, so that the front end structure is driven to drive the bottom end of the grouting pipe to rotate relative to the vertical direction, so that the grouting pipe can inject expansive slurry into the soil around the side of the bottom of the borehole, thereby realizing the construction of a multi-angle and directional anti-seepage structure and improving the anti-seepage effect; and while stirring, cutting and grouting are performed on the soil below the target grouting position, seepage pressure sensors are respectively added at different heights in the soil on the side of the target grouting position to monitor the effect of the anti-seepage structure constructed below the target grouting position in real time, and the control of the lifting and lowering device and the stirring grouting device is adjusted accordingly, the construction of the anti-seepage structure is continuously corrected, and the anti-seepage effect of the anti-seepage structure is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the lifting and lowering device in the stirring grouting system designed by the present invention; Figure 2 It is a schematic diagram of the upper section of the stirring grouting device in the stirring grouting system designed by the present invention; Figure 3 It is a schematic diagram of the lower section of the stirring grouting device in the stirring grouting system designed by the present invention; Figure 4 It is a schematic diagram of the accident oil pool anti-seepage method of the stirring grouting system designed by the present invention.

[0019] Among them, 11, oil pool; 12, drainage pool; 13, oil inlet pipe; 14, oil; 15, water; 16, connecting pipe; 17, drainage pipe; 21, water tank; 22, curing agent storage tank; 23, mixing drum; 24, first motor; 25, stirring rod; 26, stirring blade; 27, flow meter; 28, pump; 31, grouting pipe; 32, hollow shaft motor; 33, main steel pipe; 34 stirring cutting blade; 35, truss; 36, first connecting plate; 37, seepage pressure sensor; 38, first inner steel pipe; 39, first pulley; 310, one-way valve; 311, front steel pipe; 312, second inner steel pipe; 313, second pulley; 41, telescopic hose; 42, hydraulic telescopic rod; 46. Third connecting plate; 411. Second connecting plate; 51, main power supply; 53 Hydraulic pump; 54 hydraulic pipeline; 61, lifting bracket; 62, electric reel; 63, motor; 64, reducer; 65, control system; 66, power supply; 67, control button; 68, clamp structure; 69, slide rail. DETAILED DESCRIPTION

[0020] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] The present invention is designed to provide a stirring grouting system, including a lifting device and a stirring grouting device. Figure 1 As shown, the lifting and lowering device includes a lifting bracket 61, an electric-controlled drum, a cable, and a clamp structure 68. In actual application, the lifting bracket 61 is placed vertically on the ground at the target grouting position, the electric-controlled drum is placed at a preset height on the lifting bracket 61, and the clamp structure 68 is suspended directly below the electric-controlled drum via a cable. The electric-controlled drum works to wind the cable to achieve the up and down movement of the clamp structure 68.

[0022] The front end of the stirring grouting device has a steering wheel. The stirring grouting device is arranged on the clamp structure 68. The stirring grouting device is driven to move up and down in a vertical posture based on the operation of the electric control drum. The stirring grouting device stirs and cuts the soil at the target grouting position downward and transports the expansive slurry.

[0023] Regarding the practical application of the above-mentioned designed lifting and lifting device and mixing grouting device, such as Figure 2 and Figure 3As shown, the specific design of the stirring grouting device includes a grouting pipe 31, a hollow shaft motor 32, a main steel pipe 33, a front end steel pipe 311, a stirring and cutting blade 34, a truss 35, a first connecting plate 36, a telescopic hose 41, a second connecting plate 411, a third connecting plate 46, and at least two hydraulic telescopic rods 42; wherein the first connecting plate 36, the second connecting plate 411, and the third connecting plate 46 are respectively provided with through holes penetrating through both sides thereof at the center position of their surfaces, and the inner diameter of the through hole is larger than the outer diameter of the grouting pipe 31, and the inner diameter of the main steel pipe 33 and the inner diameter of the front end steel pipe 311 are both larger than the outer diameter of the grouting pipe 31; the truss The frame 35 is erected on the hoop structure 68, the two ends of the driving shaft on the hollow shaft motor 32 are open and connected, and the inner diameter of the driving shaft is larger than the outer diameter of the grouting pipe 31, and the hollow shaft motor 32 is arranged on the truss 35 with its driving shaft in a vertical posture, and the bottom end of the driving shaft on the hollow shaft motor 32 is connected to one surface of the first connecting plate 36, and the other surface of the first connecting plate 36 is connected to one surface of the second connecting plate 411 through the main steel pipe 33, and the center line of the driving shaft passes through the center of the through hole on the first connecting plate 36, the center of the through hole of the second connecting plate 411, and the center line of the driving shaft is aligned with the center line of the main steel pipe 33. Collinear; the position of the control device on each hydraulic telescopic rod 42 facing away from the telescopic rod is respectively hinged to the area between the outer periphery of the corresponding through hole on the other surface of the first connecting plate 36 and the inner periphery of the port of the connected main steel pipe 33, and the surface of the second connecting plate 411 corresponding to the position of the mobile end of the telescopic rod in each hydraulic telescopic rod 42 is respectively provided with through holes penetrating both surfaces, and the mobile end of the telescopic rod in each hydraulic telescopic rod 42 passes through the corresponding through hole on the second connecting plate 411, and is hinged to the outer periphery of the through hole on one surface of the third connecting plate 46, and when the telescopic rods in each hydraulic telescopic rod 42 are parallel to the straight line where the main steel pipe 33 is located, the main steel pipe The center line of 33 passes through the center of the through hole of the third connecting plate 46, one end of the front end steel pipe 311 is connected to the other surface of the third connecting plate 46, and the center line of the front end steel pipe 311 passes through the center of the through hole of the third connecting plate 46; the telescopic hose 41 is sleeved on the outer periphery of the overall structure of the partial section of the grouting pipe 31 and the partial section of each hydraulic telescopic rod 42 between the second connecting plate 411 and the third connecting plate 46, and the two ends of the telescopic hose 41 are respectively connected to the opposite surfaces of the second connecting plate 411 and the third connecting plate 46; the stirring and cutting blades 34 are spirally distributed and connected to the outer periphery of the main steel pipe 33 and the outer periphery of the front end steel pipe 311.

[0024] like Figure 2 and Figure 3As shown, one end of the grouting pipe 31 is inserted through the top of the driving shaft on the hollow shaft motor 32, and is placed in the front end steel pipe 311 through the through hole of the first connecting plate 36, the main steel pipe 33, the through hole of the second connecting plate 411, and the through hole of the third connecting plate 46 in sequence; based on the synchronous operation of each hydraulic telescopic rod 42 to the same length, the hollow shaft motor 32 drives the connected whole structure to rotate with the straight line where its driving shaft is located as the axis, and the grouting pipe 31 does not rotate; and based on the non-operation of the hollow shaft motor 32, through the asynchronous operation between each hydraulic telescopic rod 42, the end of the grouting pipe 31 is driven by the front end steel pipe 311 to realize the angular rotation relative to the straight line direction where the main steel pipe 33 is located. In actual application, the telescopic control of each hydraulic telescopic rod 42 is specifically achieved by controlling the hydraulic pump 53 to act on the control device of each hydraulic telescopic rod 42 through the hydraulic pipeline 54, thereby realizing the telescopic control of each hydraulic telescopic rod 42.

[0025] The above-mentioned stirring grouting device is used in practical applications, such as Figure 2 and Figure 3 As shown, the stirring and grouting device is driven by the electric control drum to move up and down in a vertical posture, and the stirring and cutting blades 34 on the periphery of the main steel pipe 33 and the stirring and cutting blades 34 on the periphery of the front end steel pipe 311 are driven by the hollow shaft motor 32 to rotate, so as to stir and cut the soil passed by the stirring and grouting device. At the same time, the expansive slurry is connected to the other end of the grouting pipe 31 to transport it to the soil after the stirring and cutting treatment, so that the expansive slurry is fully mixed with the treated soil to construct an anti-seepage structure.

[0026] In the above design of the stirring grouting device, since the lengths of the hydraulic telescopic rods 42 are the same, the hollow shaft motor 32 is required to drive the connected whole structure to rotate, and the grouting pipe 31 does not rotate. In order to improve the working smoothness of the structure that rotates outside and does not rotate inside, in practical applications, Figure 2 and Figure 3As shown, the stirring grouting device is designed to include a first inner steel pipe 38, a second inner steel pipe 312, and each first pulley 39 and each second pulley 313. The length of the first inner steel pipe 38 is equal to the length of the main steel pipe 33. The inner diameter of the first inner steel pipe 38 is greater than the outer diameter of the grouting pipe 31, and the outer diameter of the first inner steel pipe 38 is smaller than the inner diameter of the main steel pipe 33. The first inner steel pipe 38 is located inside the main steel pipe 33 between the first connecting plate 36 and the second connecting plate 411. Both ends of the first inner steel pipe 38 are respectively connected to the opposite surfaces of the first connecting plate 36 and the second connecting plate 411. The center line of the inner steel pipe 38 and the center line of the main steel pipe 33 are colinear with each other. The grouting pipe 31 passes through the inside of the first inner steel pipe 38. Each first pulley 39 is connected to the outer wall of the grouting pipe 31 at each position on the local section of the grouting pipe 31 corresponding to the first inner steel pipe 38, and the circular surface of each first pulley 39 is perpendicular to the straight line where the first inner steel pipe 38 is located. As the hollow shaft motor 32 works to drive the connected structure to rotate, each first pulley 39 contacts and rolls with the inner wall of the first inner steel pipe 38; each hydraulic telescopic rod 42 is located between the outer side of the first inner steel pipe 38 and the inner side of the main steel pipe 33.

[0027] like Figure 3 As shown, the inner diameter of the second inner steel pipe 312 is larger than the outer diameter of the grouting pipe 31, and the outer diameter of the second inner steel pipe 312 is smaller than the inner diameter of the front end steel pipe 311, one end of the second inner steel pipe 312 is connected to the other surface of the third connecting plate 46, the second inner steel pipe 312 is located in the front end steel pipe 311, and the center line of the second inner steel pipe 312 passes through the center of the through hole of the third connecting plate 46; each second pulley 313 is connected to the outer wall of the grouting pipe 31 for each position on the local section corresponding to the second inner steel pipe 312 on the grouting pipe 31, and each second pulley 313 is connected to the outer wall of the grouting pipe 31 for a circle ... inner wall of the grouting pipe 31 for a circle, and each second pulley 313 is connected to the inner wall of the grouting pipe 31 for a circle, and each second pulley 313 is connected to the inner wall of the grouting pipe 31 for a circle, and each second pulley 313 is connected to the inner wall of the grouting pipe 3 The circular surface of the second pulley 313 is perpendicular to the straight line where the second inner steel pipe 312 is located. A slide groove 313 along the inner wall is set corresponding to each position of each second pulley 313 on the inner wall of the second inner steel pipe 312. As the hollow shaft motor 32 works to drive the connected structure to rotate, each second pulley 313 rolls in the corresponding slide groove 313 on the inner wall of the second inner steel pipe 312. The movement of the grouting pipe 31 along the straight line direction where the front end steel pipe 311 is located is limited by each slide groove 313 on the inner wall of the second inner steel pipe 312 via each second pulley 313.

[0028] In actual application, since the stirring grouting device works in the soil space it cuts and stirs, the space is small. In order to improve the injection efficiency of the expansive slurry into the soil, Figure 3 As shown, the stirring grouting device is further designed to include a one-way valve 310, which is arranged on the grouting pipe 31 in the end portion inside the front end steel pipe 311, so that the expansive slurry can only be output outward to avoid the backflow of the expansive slurry, thereby minimizing the blockage of the expansive slurry in the stirring grouting device and improving the grouting efficiency of the expansive slurry.

[0029] Since the above design controls the stirring grouting device to work in the soil space it cuts and stirs, the anti-seepage effect of the anti-seepage structure it constructs is not clear. Figure 4 As shown, a preset number of seepage pressure sensors 37 are further designed to be added. Each seepage pressure sensor 37 is buried at a different height position in the soil on the side of the target grouting position, and the distribution of each seepage pressure sensor 37 in the vertical direction covers the depth position from the ground to the bottom of the oil pool 11. Each seepage pressure sensor 37 detects the seepage pressure of the soil position where it is set, that is, the anti-seepage structure constructed by the operation of the stirring grouting device is monitored in real time, and based on this, the operation of the lifting and lifting device and the operation of the stirring grouting device are adjusted to further improve the actual application anti-seepage effect of the constructed anti-seepage structure.

[0030] The expansive slurry used in the above-mentioned design structure is prepared by a slurry preparation device and transported to the other end of the grouting pipe 31. Figure 4 As shown, the slurry preparation device is designed to include a water tank 21, a curing agent storage tank 22, a mixing barrel 23, a first motor 24, a stirring rod 25, a stirring blade 26, and two pumps 28, wherein the water tank 21 and the curing agent storage tank 22 are respectively connected in series to the pumps 28 through pipelines to the mixing barrel 23, and each pump 28 works to draw water and curing agent from the water tank 21 and the curing agent storage tank 22 to the mixing barrel 23, the driving end of the first motor 24 is connected to the stirring rod 25, and the side of the stirring rod 25 is connected to the stirring blade 26, and the overall structure of the stirring rod 25 and the stirring blade 26 is placed in the mixing barrel 23, based on the control of the first motor 24, the stirring rod 25 and the stirring blade 26 are used to stir the water and curing agent in the mixing barrel 23, and an output hole is arranged on the stirring rod 25 to connect the other end of the grouting pipe 31 to transport the stirred expansive slurry. In actual applications, flow meters 27 are connected in series to the pipelines connected to the water tank 21 and the curing agent storage tank 22 respectively. Based on the real-time monitoring of the flow of materials in the pipelines by the flow meter 27, precise control is performed on each pump 28 respectively, thereby achieving precise control of the ratio of water and curing agent in the expansive slurry.

[0031] The above designed mixing grouting system is used in practical applications, such as Figure 1 As shown, the electric-controlled reel in the designed lifting and lowering device includes a motor 63, a reel 62, a reducer 64, and a controller 65, wherein the controller 65 is connected to the motor 63 via the reducer 64 for control, the motor 63 is connected to the reel 62, the reel 62 is connected to the cable, and the motor 63 drives the reel 62 to rotate to realize the winding and releasing of the cable.

[0032] Based on the application of the above-mentioned designed stirring grouting system, the present invention designs and implements an accident oil pool anti-seepage method, which is used for anti-seepage protection of an accident oil pool that is set downward from the ground and collects oil and water leaked from a faulty transformer through an oil inlet pipe 13. In actual application, for a local section of the accident oil pool where the outer side of the oil pool 11 is not connected to the drainage pool 12, the position of the ground facing the local section is marked as a first anti-seepage wall marking section, and the position of the ground along the outer side of the first anti-seepage wall marking section and with a preset distance greater than 0 from the first anti-seepage wall marking section is marked as a second anti-seepage wall marking section. The specific design of the accident oil pool anti-seepage method includes applying a stirring grouting system to perform the following steps A to E for the first anti-seepage wall marking section and the second anti-seepage wall marking section, respectively.

[0033] Step A: The mobile lifting support 61 is set at the starting point of the marked section of the ground cut-off wall, which is defined as the target grouting position, and then the process proceeds to step B.

[0034] Step B. Control the hydraulic telescopic rods 42 in the stirring grouting device to be synchronized to the same length, control the electric control drum to drive the stirring grouting device to move in a vertical posture toward the target grouting position on the ground, and control the hollow shaft motor 32 to drive the stirring and cutting blades 34 on the outer periphery of the main steel pipe 33 and the stirring and cutting blades 34 on the outer periphery of the front end steel pipe 311 to rotate, stir and cut the soil passed by the stirring grouting device, and drill a hole at the target grouting position until it penetrates deep below the ground to the depth position at the bottom of the oil pool 11. At the same time, the other end of the grouting pipe 31 is connected to the expansive slurry, and the expansive slurry is injected into the soil stirred and cut in the drilled hole to construct an anti-seepage structure, and then enter step C.

[0035] Step C. Control the hollow shaft motor 32 to stop working, and then control the asynchronous operation of the hydraulic telescopic rods 42 in the stirring grouting device to drive the third connecting plate 46 to change its angle relative to the second connecting plate 411, that is, drive the bottom end of the grouting pipe 31 to rotate relative to the straight direction of the main steel pipe 33 through the front end steel pipe 311, connect the expansive slurry from the other end of the grouting pipe 31, inject the expansive slurry into the soil at the bottom of the borehole, and inject the expansive slurry into the soil around the side of the bottom of the borehole to construct an anti-seepage structure, and then enter step D.

[0036] Step D. Control the hydraulic telescopic rods 42 in the stirring grouting device to be synchronized to the same length, and control the electric control drum to drive the stirring grouting device to move upward in a vertical posture. The other end of the grouting pipe 31 continues to be connected to the expansive slurry, and the expansive slurry is injected into the soil in the borehole to solidify the soil until the stirring grouting device moves upward and exits the borehole, and the soil in the borehole is solidified. The electric control drum is controlled to stop working, and the grouting work of the grouting pipe 31 is controlled to stop, and then enter step E.

[0037] Step E. Determine whether all positions on the cut-off wall marking section have participated in the processing from step B to step D. If so, the cut-off wall marking section completes the anti-seepage protection of the accident oil pool; otherwise, move the lifting bracket 61 to the adjacent position of the target grouting position along the ground cut-off wall marking section, and update the adjacent position as the target grouting position, and then return to step B.

[0038] In actual applications, the oil and water leaked from the faulty transformer are separated into an upper layer of oil 14 and a lower layer of water 15 in the oil pool 11. Based on the connecting pipe 16 located at the bottom between the oil pool 11 and the drainage pool 12, the lower layer of water flows to the drainage pool 12 through the connecting pipe 16, and the drainage pool 12 then passes through the external drainage pipe 17 to realize the external discharge of the water in the drainage pool 12.

[0039] In the application of the first and second anti-seepage wall marking sections designed for the accident oil pool, each seepage pressure sensor 37 can be arranged in the soil between the first and second anti-seepage wall marking sections along the vertical direction to monitor the waste oil leakage in the direction of the first anti-seepage wall marking section. If the seepage pressure sensor 37 detects that the waste oil has leaked into the soil between the anti-seepage structures corresponding to the two anti-seepage wall marking sections, the anti-seepage structure corresponding to the third anti-seepage wall marking section can be constructed on the outside of the second anti-seepage wall marking section to prevent the waste oil from polluting the surrounding soil in a larger range. In actual applications, each seepage pressure sensor 37 receives power from the main power supply 51 to work.

[0040] The above technical scheme designs a stirring grouting system, which is designed to be carried by a lifting and lowering device and control the stirring grouting device to stir and cut the soil below the surface of the target grouting position vertically downward, and at the same time, the expansive slurry is added to the treated soil to achieve full mixing of the treated soil and the expansive slurry, and to construct an anti-seepage structure. The integration of soil stirring and cutting and soil grouting operations is realized in both the device and the method, and the work efficiency is improved; and an accident oil pool anti-seepage method based on this stirring grouting system is designed. For the accident oil pool set downward from the ground for collecting oil and water leaked from the faulty transformer, a first anti-seepage wall marking section and a second anti-seepage wall marking section are sequentially constructed along the outer surface of the accident oil pool. On the one hand, multi-level protection is performed for the accident oil pool to effectively block the leakage of waste oil. On the other hand, the waste oil that has leaked into the soil from the accident oil pool is blocked to effectively prevent further outflow of the waste oil, and the anti-seepage treatment of the accident oil pool is efficiently completed to protect the soil environment around the accident oil pool, effectively make up for the current technical deficiencies in this field, and has important application value.

[0041] While designing a stirring and grouting device to achieve stirring, cutting and grouting of the soil, an angle changing structure is designed for the front end of the stirring and grouting device, and the front end structure is driven to cause the bottom end of the grouting pipe 31 to rotate relative to the vertical direction, so that the grouting pipe 31 can inject expansive slurry into the soil around the side of the bottom of the borehole, thereby realizing the construction of a multi-angle and directional anti-seepage structure and improving the anti-seepage effect; and while stirring, cutting and grouting are performed on the soil below the target grouting position, seepage pressure sensors 37 are respectively added at different heights in the soil on the side of the target grouting position to monitor the effect of the anti-seepage structure constructed below the target grouting position in real time, and the control of the lifting and lifting device and the stirring and grouting device is adjusted accordingly, the construction of the anti-seepage structure is continuously corrected, and the anti-seepage effect of the anti-seepage structure is further improved.

[0042] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A stirring grouting system, characterized in that: It comprises a lifting and lowering device and a stirring grouting device, wherein the lifting and lowering device comprises a lifting bracket (61), an electric control drum, a cable, and a clamp structure (68); the lifting bracket (61) is placed on the ground at a target grouting position in a vertical posture; the electric control drum is placed at a preset height position on the lifting bracket (61); the clamp structure (68) is suspended directly below the electric control drum via a cable; the electric control drum works to wind the cable to achieve the up and down movement of the clamp structure (68); The front end of the stirring grouting device has a steering mechanism. The stirring grouting device is arranged on the clamping structure (68). The stirring grouting device is driven to move up and down in a vertical posture based on the operation of the electric control drum. The stirring grouting device stirs and cuts the soil at the target grouting position downwards and transports the expansive slurry.

2. A stirring grouting system according to claim 1, characterized in that: The stirring grouting device comprises a grouting pipe (31), a hollow shaft motor (32), a main steel pipe (33), a front end steel pipe (311), a stirring and cutting blade (34), a truss (35), a first connecting plate (36), a second connecting plate (411), a third connecting plate (46), and at least two hydraulic telescopic rods (42); wherein the first connecting plate (36), the second connecting plate (411), and the third connecting plate (46) are respectively provided with through holes penetrating through both surfaces at the center positions of their surfaces, and the inner diameters of the through holes are larger than the outer diameter of the grouting pipe (31), and the inner diameters of the main steel pipe (33) and the front end steel pipe (311) are both larger than the outer diameter of the grouting pipe (31); the truss (35) is mounted on a hoop structure (68), and the hollow shaft The two ends of the drive shaft on the motor (32) are open and connected to each other, and the inner diameter of the drive shaft is larger than the outer diameter of the grouting pipe (31). The hollow shaft motor (32) is arranged on the truss (35) with its drive shaft in a vertical posture. The bottom end of the drive shaft on the hollow shaft motor (32) is connected to one surface of the first connecting plate (36), and the other surface of the first connecting plate (36) is connected to one surface of the second connecting plate (411) through the main steel pipe (33). The center line of the drive shaft passes through the center of the through hole on the first connecting plate (36), the center of the through hole of the second connecting plate (411), and the center line of the drive shaft is colinear with the center line of the main steel pipe (33). The position of the control device on each hydraulic telescopic rod (42) facing away from the telescopic rod is hinged to the first connecting plate (36). The other surface of a connecting plate (36) corresponds to an area between the outer periphery of a through hole and the inner periphery of a port of the connected main steel pipe (33); the surface of the second connecting plate (411) corresponds to the position of the movable end of each telescopic rod in each hydraulic telescopic rod (42) and has through holes penetrating through both surfaces; the movable end of each telescopic rod in each hydraulic telescopic rod (42) passes through the corresponding through hole on the second connecting plate (411) and is hinged to the outer periphery of the through hole on one surface of the third connecting plate (46); and when the telescopic rods in each hydraulic telescopic rod (42) are parallel to the straight line where the main steel pipe (33) is located, the center line of the main steel pipe (33) passes through the center of the through hole of the third connecting plate (46), and one end of the front end steel pipe (311) is connected to the other surface of the third connecting plate (46). The center line of the front steel pipe (311) passes through the center of the through hole of the third connecting plate (46); the stirring and cutting blades (34) are spirally distributed and connected to the outer periphery of the main steel pipe (33) and the outer periphery of the front steel pipe (311); one end of the grouting pipe (31) is inserted through the top end of the driving shaft on the hollow shaft motor (32), and is sequentially passed through the through hole of the first connecting plate (36), the main steel pipe (33), the through hole of the second connecting plate (411), and the through hole of the third connecting plate (46) to be placed in the front steel pipe (311); based on the synchronous operation of the hydraulic telescopic rods (42) to the same length, the hollow shaft motor (32) drives the connected whole structure to rotate with the straight line where the driving shaft is located as the axis, and the grouting pipe (31) does not rotate;Furthermore, due to the non-operation of the hollow shaft motor (32), the hydraulic telescopic rods (42) work asynchronously, and the front end steel pipe (311) drives the end of the grouting pipe (31) to achieve angular rotation relative to the straight line direction of the main steel pipe (33); The operation of the electrically controlled reel drives the stirring grouting device to move up and down in a vertical posture, and the operation of the hollow shaft motor (32) drives the stirring and cutting blades (34) to rotate to stir and cut the soil at the target grouting position, and the other end of the grouting pipe (31) is connected to the expansive slurry and transported to the target grouting position.

3. A stirring grouting system according to claim 2, characterized in that: The stirring grouting device further comprises a first inner steel pipe (38), a second inner steel pipe (312), and first pulleys (39) and second pulleys (313). The length of the first inner steel pipe (38) is equal to the length of the main steel pipe (33). The inner diameter of the first inner steel pipe (38) is greater than the outer diameter of the grouting pipe (31), and the outer diameter of the first inner steel pipe (38) is smaller than the inner diameter of the main steel pipe (33). The first inner steel pipe (38) is located inside the main steel pipe (33) between the first connecting plate (36) and the second connecting plate (411). The two ends of the first inner steel pipe (38) are respectively connected to the mutually opposite surfaces between the first connecting plate (36) and the second connecting plate (411). The center line of the tube (38) and the center line of the main steel tube (33) are colinear with each other, the grouting tube (31) passes through the inside of the first inner steel tube (38), and each first pulley (39) is connected to the outer wall of the grouting tube (31) at each position on the local section of the grouting tube (31) corresponding to the first inner steel tube (38), and the circular surface of each first pulley (39) is perpendicular to the straight line where the first inner steel tube (38) is located. When the hollow shaft motor (32) works to drive the connected structure to rotate, each first pulley (39) contacts and rolls with the inner wall of the first inner steel tube (38); each hydraulic telescopic rod (42) is located between the outer side of the first inner steel tube (38) and the inner side of the main steel tube (33); The inner diameter of the second inner steel pipe (312) is greater than the outer diameter of the grouting pipe (31), and the outer diameter of the second inner steel pipe (312) is smaller than the inner diameter of the front end steel pipe (311); one end of the second inner steel pipe (312) is connected to the other surface of the third connecting plate (46); the second inner steel pipe (312) is located inside the front end steel pipe (311), and the center line of the second inner steel pipe (312) passes through the center of the through hole of the third connecting plate (46); each second pulley (313) is connected to the outer wall of the grouting pipe (31) for each position on the local section of the grouting pipe (31) corresponding to the second inner steel pipe (312), and each second pulley (313) is connected to the outer wall of the grouting pipe (31) for a circle; The circular surface of the pulley (313) is perpendicular to the straight line where the second inner steel pipe (312) is located. A sliding groove (313) along the inner wall is respectively arranged at each position corresponding to each second pulley (313) on the inner wall of the second inner steel pipe (312). When the hollow shaft motor (32) works to drive the connected structure to rotate, each second pulley (313) rolls in the corresponding sliding groove (313) on the inner wall of the second inner steel pipe (312). The sliding grooves (313) on the inner wall of the second inner steel pipe (312) are used to limit the movement of the grouting pipe (31) along the straight line where the front end steel pipe (311) is located through each second pulley (313).

4. A stirring grouting system according to claim 2 or 3, characterized in that: The stirring grouting device further comprises a one-way valve (310), which is arranged at an end of the grouting pipe (31) located inside the front end steel pipe (311).

5. A stirring grouting system according to any one of claims 1 to 3, characterized in that: It also includes a preset number of seepage pressure sensors (37), each of which is buried at a different height in the soil on the side of the target grouting position, and each of the seepage pressure sensors (37) is distributed in a vertical direction covering a depth from the ground to the bottom of the oil pool (11), and each of the seepage pressure sensors (37) detects the seepage pressure at the soil position where it is set.

6. A stirring grouting system according to claim 2 or 3, characterized in that: The invention also includes a slurry preparation device for preparing an expansive slurry to be transported to the other end of the grouting pipe (31). The slurry preparation device includes a water storage tank (21), a curing agent storage tank (22), a stirring barrel (23), a first motor (24), a stirring rod (25), a stirring blade (26), and two pumps (28). The water storage tank (21) and the curing agent storage tank (22) are respectively connected in series to the pumps (28) through pipelines to the stirring barrel (23). The pumps (28) are operated to respectively extract the expansive slurry from the water storage tank (21) and the curing agent storage tank (23). 2) water and curing agent are introduced into the mixing barrel (23), the driving end of the first motor (24) is connected to the stirring rod (25), the side of the stirring rod (25) is connected to the stirring blade (26), the whole structure of the stirring rod (25) and the stirring blade (26) is placed in the mixing barrel (23), based on the control of the first motor (24), the stirring rod (25) and the stirring blade (26) are used to stir the water and curing agent in the mixing barrel (23), and the stirring rod (25) is provided with an output hole connected to the other end of the grouting pipe (31) to transport the stirred expansive slurry.

7. A stirring grouting system according to claim 1, characterized in that: The electric-controlled reel in the lifting device comprises a motor (63), a reel (62), a reducer (64), and a controller (65), wherein the controller (65) is connected to the motor (63) via the reducer (64) for control, the motor (63) is connected to the reel (62), the reel (62) is connected to the cable, and the motor (63) drives the reel (62) to rotate, thereby realizing the winding and releasing of the cable.

8. A stirring grouting system according to claim 2 or 3, characterized in that: It also includes a telescopic hose (41), which is sleeved on the outer periphery of the overall structure of the partial section of the grouting pipe (31) and the partial section of each hydraulic telescopic rod (42) between the second connecting plate (411) and the third connecting plate (46), and the two ends of the telescopic hose (41) are respectively connected to the mutually opposite surfaces of the second connecting plate (411) and the third connecting plate (46).

9. Based on the anti-seepage method of the accident oil pool of the stirring grouting system of claim 2 or 3, the anti-seepage protection is performed on the accident oil pool set downward from the ground for collecting the oil and water leaked from the faulty transformer, characterized in that: For a local section of the accident oil pool where the outer side of the oil pool (11) is not connected to the drainage pool (12), the position of the ground facing the local section is marked as a first anti-seepage wall marking section, and the position of the ground along the outer side of the first anti-seepage wall marking section and with a preset distance greater than 0 from the first anti-seepage wall marking section is marked as a second anti-seepage wall marking section. The accident oil pool anti-seepage method includes using a stirring grouting system to perform the following steps for the first anti-seepage wall marking section and the second anti-seepage wall marking section respectively: Step A. The mobile lifting support (61) is set at the starting point of the marked section of the ground cut-off wall, which is defined as the target grouting position, and then proceeds to step B; Step B. Controlling the hydraulic telescopic rods (42) in the stirring grouting device to be synchronized to the same length, controlling the electric control drum to drive the stirring grouting device to move in a vertical posture toward the target grouting position on the ground, and controlling the hollow shaft motor (32) to drive the stirring and cutting blades (34) to rotate to stir and cut the soil at the target grouting position, and drilling at the target grouting position until the depth reaches the bottom of the oil pool (11) below the ground. At the same time, the other end of the grouting pipe (31) is connected to the swelling slurry, and the swelling slurry is injected into the soil stirred and cut in the drilled hole, and then entering step C; Step C. Control the hollow shaft motor (32) to stop working, and then control the asynchronous operation of the hydraulic telescopic rods (42) in the stirring grouting device to drive the third connecting plate (46) to change its angle relative to the second connecting plate (411), that is, drive the bottom end of the grouting pipe (31) to rotate relative to the straight line direction of the main steel pipe (33) through the front steel pipe (311), connect the swelling slurry to the other end of the grouting pipe (31), inject the swelling slurry into the soil at the bottom of the borehole, and inject the swelling slurry into the soil around the side of the bottom of the borehole, so as to construct an anti-seepage structure, and then enter step D; Step D. Controlling the hydraulic telescopic rods (42) in the stirring grouting device to be synchronized to the same length, and controlling the electric control drum to drive the stirring grouting device to move upward in a vertical posture, the other end of the grouting pipe (31) continues to be connected to the expansive slurry, and the expansive slurry is injected into the soil in the borehole to solidify the soil, until the stirring grouting device moves upward and exits the borehole, and the soil in the borehole is solidified, the electric control drum is controlled to stop working, and the grouting work of the grouting pipe (31) is controlled to stop, and then the process proceeds to step E; Step E. Determine whether all positions on the cut-off wall marking section have participated in the processing from step B to step D. If so, the cut-off wall marking section completes the anti-seepage protection of the accident oil pool; otherwise, move the lifting bracket (61) to a position adjacent to the target grouting position along the ground cut-off wall marking section, update the adjacent position as the target grouting position, and then return to step B.

10. The method for preventing accident oil pool from seeing through according to claim 9, characterized in that: The accident oil pool also includes a connecting pipe (16) located between the oil pool (11) and a drainage pool (12) connected to its side. Based on the separation of the upper oil layer and the lower water layer in the oil pool (11) of the oil and water leaked by the faulty transformer, the lower water layer flows through the connecting pipe (16) to the drainage pool (12), and the drainage pool (12) then passes through an external drainage pipe (17) to achieve external discharge of the water in the drainage pool (12).

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