Water-rich rock stratum underground water plugging device

Abstract

The application discloses a water-rich rock stratum underground water plugging device, which comprises a stirring machine, a connecting pipe, a grouting mechanism capable of rotating and moving up and down, a grouting pipe, a first grouting head and a second grouting head, a grouting anchor rod, a pressure valve, a water pressure sensor and a controller. The first grouting head is communicated with the lower end of the grouting pipe, and the lower end of the first grouting head is provided with a drill bit. The upper end of the second grouting head is communicated with the lower end of the grouting pipe. The lower end of the first grouting head is provided with the grouting anchor rod. The communicating position of the grouting pipe and the second grouting head is provided with the pressure valve. The second grouting head is provided with at least three grouting channels. The inlet end of each grouting channel is provided with a valve, and the outlet end of each grouting channel is provided with a plurality of grouting holes. The grouting holes of the three grouting channels are sequentially increased in size. The water pressure sensor and the controller are arranged. The plugging device can adjust the grouting amount according to the change of underground water, and improve the plugging effect.

Description

Technical Field

[0001] This invention relates to the field of groundwater sealing technology, and in particular to a groundwater sealing device for water-rich rock strata. Background Technology

[0002] Groundwater, as a vital water body on Earth, is closely related to human society. Its storage acts like a giant underground reservoir, providing stable water supply and good quality, making it an essential source of water for agricultural irrigation, industrial and mining enterprises, and urban domestic use—an indispensable water resource for human society. However, with global population growth, continuous industrial progress, and socio-economic development, human activities and industrial production have caused serious pollution to the groundwater environment, leading to a continuous decline in groundwater levels, deterioration of water quality, and an exacerbation of the water crisis. Particularly for water-rich rock formations, issues such as seepage from foundation pit sidewalls and sudden inrush of water at the foundation necessitate the development of sealing methods.

[0003] Existing sealing methods only provide temporary relief and cannot permanently solve the problem. For example, current sealing methods often use vibrators to break up the soil and apply waterproof membrane, but this method is ineffective and inefficient. Alternatively, grouting can be used, but existing grouting methods cannot precisely select grouting holes; only holes with approximate and fixed diameters can be used, and the grout volume cannot be adjusted. If the grout volume is too large, shallow layers are prone to grout leakage, resulting in a long construction period; if the grout volume is too small, the grout cannot fully adhere to the soil surface, leading to poor sealing. Summary of the Invention

[0004] The purpose of this invention is to provide a groundwater sealing device for water-rich rock strata, thereby overcoming the shortcomings of existing grouting methods, such as fixed grouting hole diameter, inability to adjust grouting volume, and easy failure of grout to adhere to the soil surface.

[0005] To achieve the above object, the present invention provides a groundwater plugging device for water-rich rock formations, comprising: a mixing machine for providing grouting materials; a connecting pipe; a grouting mechanism for grouting, the grouting mechanism being driven by a driving device to rotate and move up and down; the grouting mechanism includes a grouting pipe, a first grouting head and a second grouting head, the slurry outlet of the mixing machine is connected to the grouting inlet at the upper end of the grouting pipe through the connecting pipe; the upper end of the first grouting head is connected to the grouting outlet at the lower end of the grouting pipe, and a drill bit is provided at the lower end of the first grouting head; the upper end of the second grouting head is connected to the grouting outlet at the lower end of the grouting pipe; a grouting anchor rod, the grouting anchor rod is provided at the lower end of the first grouting head; a pressure valve, the pressure valve is provided at the connection between the grouting pipe and the second grouting head; a grouting channel, at least three such grouting channels are provided in the second grouting head, a valve is provided at the inlet end of each grouting channel, and a plurality of grouting holes are provided at the outlet end of each grouting channel, and the grouting holes of the three grouting channels increase in sequence; a water pressure sensor installed outside the second grouting head for detecting the water pressure information of groundwater; and a controller, the mixing machine, the driving device, the pressure valve, the valve and the water pressure sensor are all connected to the controller.

[0006] Preferably, in the above technical solution, an air pipe is further included, the air pipe is wound around the grouting pipe, the air inlet of the air pipe is connected to a blower, and the air outlet of the air pipe corresponds to the grouting outlet of the grouting mechanism; wherein, the blower is connected to the controller.

[0007] Preferably, in the above technical solution, the grouting mechanism is distributed in a "human" shape, two grouting outlets are provided at the lower end of the grouting pipe, and the two grouting outlets are respectively connected to the first grouting head and the second grouting head.

[0008] Preferably, in the above technical solution, the grouting anchor rod is arranged on the drill bit.

[0009] Preferably, in the above technical solution, the second grouting head includes a grouting rod, and the three grouting channels provided in the grouting rod are concentrically distributed from inside to outside in sequence, and all the grouting holes on each grouting channel are evenly distributed along its circumferential direction.

[0010] Preferably, in the above technical solution, the grouting rod is of a telescopic hose structure.

[0011] Preferably, in the above technical solution, the cross-section of the connecting pipe in the up-down direction is trapezoidal with the upper part larger and the lower part smaller.

[0012] Preferably, in the above technical solution, the driving device includes: a platform, the upper end of the grouting mechanism being rotatably connected to the platform; a telescopic cylinder, the lower end of which is connected to the ground, and the upper end of the telescopic cylinder being connected to the platform; wherein the telescopic cylinder is connected to the controller; and a rotating mechanism for driving the grouting mechanism to rotate.

[0013] Preferably, in the above technical solution, the rotating mechanism includes a gear ring, a gear, and a motor. The gear ring is provided on the outer side wall of the upper end of the grouting pipe. The gear is rotatably mounted on the platform and meshes with the gear ring. The motor is mounted on the platform and connected to the gear. The motor is connected to the controller.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In use, the grouting mechanism of the present invention drills holes to relieve water pressure and then uses the grouting mechanism to grout the holes. As the grouting mechanism moves up and down and rotates, it can perform omnidirectional grouting. During grouting, the first grouting head is normally open, and the second grouting head opens and closes according to the pressure of the grouting material in the grouting pipe. When the pressure of the grouting material reaches the set value of the pressure valve, the pressure valve opens, and the second grouting head works. Furthermore, the second grouting head can control the opening of the corresponding grouting channel in the second grouting head based on the groundwater pressure information detected by the water pressure sensor, so as to use the grouting hole of the corresponding size for grouting. It can adjust the grouting volume according to the changes in groundwater, so that the grout can adhere to the soil surface and improve the sealing effect.

[0016] 2. The present invention has an air duct wound around the grouting pipe. By sending air into the grouting holes, the grouting material can be stably integrated with the soil, thereby improving the sealing effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the groundwater sealing device for water-rich rock strata according to the present invention.

[0018] Figure 2 This is a schematic diagram of the cross-section of the second grouting head according to the present invention.

[0019] Explanation of key figure labels:

[0020] 1-Controller, 2-Mixing machine, 3-Platform, 4-Motor, 5-Telescopic cylinder, 6-Grouting pipe, 7-First grouting head, 8-Drill bit, 9-Grouting anchor, 10-Pressure valve, 11-Grouting channel, 12-Second grouting head, 13-Water pressure sensor, 14-Valve, 15-Air duct, 16-Grouting hole, 17-Connecting pipe. Detailed Implementation

[0021] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0022] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0023] Figure 1 and Figure 2 The diagram shows a structural schematic of a groundwater sealing device for water-rich rock strata according to a preferred embodiment of the present invention. The sealing device includes a mixing machine 2, a connecting pipe 17, a grouting mechanism, a grouting anchor 9, a pressure valve 10, a grouting channel 11, a water pressure sensor 13, and a controller 1.

[0024] refer to Figure 1 and Figure 2The mixing machine 2 is used to provide grouting material. The grouting mechanism is used for grouting; it is driven by a drive device to rotate and move up and down, enabling omnidirectional grouting. The grouting mechanism includes a grouting pipe 6, a first grouting head 7, and a second grouting head 12. The outlet of the mixing machine 2 is connected to the grouting inlet at the upper end of the grouting pipe 6 via a connecting pipe 17, allowing the grouting material from the mixing machine 2 to be delivered into the grouting pipe 6. The upper end of the first grouting head 7 is connected to the grouting outlet at the lower end of the grouting pipe 6 for grouting. A drill bit 8 is provided at the lower end of the first grouting head 7, allowing simultaneous grouting and drilling during the grouting process, further solidifying and fusing the grouting material with the soil. The upper end of the second grouting head 12 is connected to the grouting outlet at the lower end of the grouting pipe 6. The lower end of the first grouting head 7 is equipped with a grouting anchor rod 9, which communicates with the inner cavity of the first grouting head 7, thereby communicating with the grouting pipe 6, so that the first grouting head 7 can perform grouting through the grouting anchor rod 9. A pressure valve 10 is provided at the connection between the grouting pipe 6 and the second grouting head 12. When the pressure of the grouting material in the grouting pipe 6 reaches the specified value of the pressure valve 10, the pressure valve 10 opens, and the second grouting head 12 starts working. The opening and closing of the second grouting head 12 can be controlled by controlling the amount of grouting material delivered by the mixing machinery 2. The second grouting head 12 is provided with at least three grouting channels 11, which are located behind the pressure valve 10. Each grouting channel 11 has a valve 14 at its inlet end for easy control of the opening and closing of each grouting channel 11. Each grouting channel 11 has multiple grouting holes 16 at its outlet end for grouting. The grouting holes 16 of the three grouting channels 11 increase in size sequentially, facilitating the selection of the grouting channel 11 with the corresponding grouting hole 16 to be opened based on the groundwater pressure. A water pressure sensor 13 is installed on the outside of the second grouting head 12 to detect groundwater pressure information. The mixing machine 2, drive unit, pressure valve 10, valve 14, and water pressure sensor 13 are all connected to the controller 1, allowing the controller 1 to control the operation of the mixing machine 2 and drive unit. The controller 1 can control and adjust the set value of the pressure valve 10 and can control the opening of the valve 14 of the corresponding grouting channel 11 based on the water pressure information. When the groundwater pressure is in a lower range, the valve 14 of the grouting channel 11 with the smallest hole diameter is opened; when the groundwater pressure is in an intermediate range, the valve 14 of the grouting channel 11 with the second largest hole diameter is opened; when the groundwater pressure is in a higher range, the valve 14 of the grouting channel 11 with the largest hole diameter is opened. By using grouting holes 16 of different sizes for grouting, the amount of grout can be adjusted according to changes in groundwater, so that the grout can adhere to the soil surface and improve the sealing effect.

[0025] refer to Figure 1Preferably, the sealing device further includes an air duct 15, which is wound around the grouting pipe 6, and the air duct 15 is positioned so as not to obstruct the rotation of the grouting pipe 6. The air inlet of the air duct 15 is connected to a blower, and the air outlet of the air duct 15 corresponds to the grouting outlet of the grouting mechanism. By supplying air into the grouting holes, the grouting material can be firmly integrated with the soil, improving the grouting sealing effect. The blower is connected to a controller 1 for easy control of the blower's operation.

[0026] refer to Figure 1 The grouting mechanism is arranged in a "V" or "T" shape. Preferably, the grouting mechanism is arranged in a "V" shape, and the lower end of the grouting pipe 6 is provided with two grouting outlets. The two grouting outlets are respectively connected to the first grouting head 7 and the second grouting head 12, which facilitates the delivery and grouting of grouting materials, expands the grouting range, and improves the sealing effect.

[0027] refer to Figure 1 The grouting anchor 9 can be installed on the first grouting head 7 or on the drill bit 8. Preferably, the grouting anchor 9 is installed on the drill bit 8 so that the drill bit 8 integrates drilling and grouting, thereby improving the sealing effect.

[0028] refer to Figure 1 and Figure 2 The three grouting channels 11 can be arranged in parallel or in a concentric circle. Preferably, the second grouting head 12 includes a grouting rod, and the three grouting channels 11 inside the grouting rod are arranged in a concentric circle from the inside to the outside. All the grouting holes 16 on each grouting channel 11 are evenly distributed along its circumference to improve the uniformity of grouting. More preferably, the grouting rod is a telescopic hose structure, so that when the grouting rod agitates the grouting material and the soil, the two can be fully and stably mixed, while avoiding hard protrusions in the pores, preventing the grouting mechanism from jamming, and ensuring that the grouting work can proceed normally.

[0029] refer to Figure 1 The diameter of the connecting pipe 17 can be variable or constant. Preferably, the cross-section of the connecting pipe 17 in the vertical direction is a trapezoidal shape with a larger top and a smaller bottom. The inverted trapezoidal structure design provides a buffer time for the injected grouting material, preventing blockage caused by gravitational impact.

[0030] refer to Figure 1Preferably, the driving device includes a platform 3, a telescopic cylinder 5, and a rotating mechanism. The upper end of the grouting mechanism is rotatably connected to the platform 3, allowing the grouting mechanism to rotate relative to the platform 3, thereby performing rotational grouting on the pores. The lower end of the telescopic cylinder 5 is connected to the ground, and the upper end of the telescopic cylinder 5 is connected to the platform 3. By driving the telescopic cylinder 5 to extend or retract, the platform 3 can be moved up and down, thereby driving the grouting mechanism to move up and down along the pores for grouting. The telescopic cylinder 5 is connected to the controller 1 for easy control of its operation. The rotating mechanism is used to drive the grouting mechanism to rotate. More preferably, the rotating mechanism includes a gear ring, a gear, and a motor 4. A gear ring is provided on the outer wall of the upper end of the grouting pipe 6. The gear is rotatably mounted on the platform 3 and meshes with the gear ring. The motor 4 is mounted on the platform 3 and connected to the gear. By rotating the motor 4, the gear and gear ring are driven to rotate, thereby driving the grouting mechanism to rotate. The motor 4 is connected to the controller 1 for easy control of its opening and closing.

[0031] During use, a hole is drilled using a drilling rig to relieve water pressure, ensuring the drilled hole is large enough to accommodate the grouting mechanism. The grouting mechanism then injects grout into the hole. During grouting, the telescopic cylinder 5 retracts, lowering the grouting mechanism to the bottom of the hole. The drive motor 4 then rotates, and the mixing mechanism 2 delivers the grouting material for the grouting process. A blower is also turned on to provide airflow. The grouting mechanism moves upwards while rotating. Because the first grouting head 7 is normally open, it continuously injects grout until the grouting and sealing work is complete. The second grouting head 12 opens and closes according to the pressure of the grouting material in the grouting pipe 6. When the pressure of the grouting material reaches the set value of the pressure valve 10, the pressure valve 10 opens and the second grouting head 12 starts working. The second grouting head 12 can also control the opening of the corresponding grouting channel 11 in the second grouting head 12 based on the groundwater pressure information detected by the water pressure sensor 13, and use the corresponding sized grouting hole 16 for grouting. It can adjust the grouting volume according to the changes in groundwater, so that the grout can adhere to the soil surface and improve the sealing effect.

[0032] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A groundwater sealing device for water-rich rock strata, characterized in that, Comprising: A stirring machine for providing grouting materials; A connecting pipe; A grouting mechanism for grouting, which is driven by a driving device to rotate and move up and down; the grouting mechanism includes a grouting pipe, a first grouting head and a second grouting head, and the slurry outlet of the stirring machine is connected to the grouting inlet at the upper end of the grouting pipe through the connecting pipe; the upper end of the first grouting head is connected to the grouting outlet at the lower end of the grouting pipe, and a drill bit is provided at the lower end of the first grouting head; the upper end of the second grouting head is connected to the grouting outlet at the lower end of the grouting pipe; A grouting anchor rod, which is provided at the lower end of the first grouting head; A pressure valve, which is provided at the connection between the grouting pipe and the second grouting head; A grouting channel, at least three such grouting channels are provided in the second grouting head, a valve is provided at the inlet end of each grouting channel, and a plurality of grouting holes are provided at the outlet end of each grouting channel, and the grouting holes of the three grouting channels increase in sequence; it is convenient to select the grouting channel with the corresponding size of the grouting hole according to the magnitude of the groundwater pressure; A water pressure sensor, which is installed on the outer side of the second grouting head for detecting the water pressure information of the groundwater; And A controller, the stirring machine, the driving device, the pressure valve, the valve and the water pressure sensor are all connected to the controller.

2. The groundwater sealing device for water-rich rock strata according to claim 1, characterized in that, It further includes an air duct, the air duct is wound around the grouting pipe, the air inlet of the air duct is connected to a blower, and the air outlet of the air duct corresponds to the grouting outlet of the grouting mechanism; wherein, the blower is connected to the controller.

3. The groundwater sealing device for water-rich rock strata according to claim 1, characterized in that, The grouting mechanism is distributed in a "human" shape, two grouting outlets are provided at the lower end of the grouting pipe, and the two grouting outlets are respectively connected to the first grouting head and the second grouting head.

4. The groundwater sealing device for water-rich rock strata according to claim 1, characterized in that, The grouting anchor rod is arranged on the drill bit.

5. The groundwater sealing device for water-rich rock strata according to claim 1, characterized in that, The second grouting head includes a grouting rod, and the three grouting channels provided in the grouting rod are concentrically distributed from the inside to the outside in sequence, and all the grouting holes on each grouting channel are evenly distributed along the circumferential direction thereof.

6. The groundwater sealing device for water-rich rock strata according to claim 5, characterized in that, The grouting rod is of a telescopic hose structure.

7. The groundwater sealing device for water-rich rock strata according to claim 1, characterized in that, The cross-section of the connecting pipe in the up-and-down direction is trapezoidal with the upper part larger and the lower part smaller.

8. The groundwater sealing device for water-rich rock strata according to claim 1, characterized in that, The driving device includes: A platform, the upper end of the grouting mechanism is rotatably connected to the platform; A telescopic cylinder, its lower end is connected to the ground, and the upper end of the telescopic cylinder is connected to the platform; wherein, the telescopic cylinder is connected to the controller; and A rotating mechanism for driving the grouting mechanism to rotate.

9. The groundwater sealing device for water-rich rock strata according to claim 8, characterized in that, The rotating mechanism includes a gear ring, a gear and a motor, a gear ring is provided on the outer side wall of the upper end of the grouting pipe, the gear is rotatably installed on the platform and meshed with the gear ring, and the motor is installed on the platform and connected to the gear; wherein, the motor is connected to the controller.

Images