High-pressure chemical grouting device for different directions of surrounding rock of high-pressure water channel system

Abstract

The utility model relates to the technical field of water conservancy and hydropower engineering, in particular to a high-pressure chemical grouting device for different directions of surrounding rock of a high-pressure water channel system. Comprising a slurry outlet pipe, a slurry inlet pipe, a first sealing element, a second sealing element and micro-expansion quick-setting cement, the micro-expansion quick-setting cement is fixedly arranged outside the slurry outlet pipe and the slurry inlet pipe in a sleeving mode, the first sealing element is fixedly connected with the slurry outlet pipe and located on the slurry outlet pipe, and the second sealing element is fixedly connected with the slurry inlet pipe and located on the slurry inlet pipe. The device can be simply and quickly adjusted to be simultaneously suitable for upward and downward drilling grouting, and the problem that grout in a hole is prone to backflow under high pressure is solved.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydropower engineering technology, and in particular to a high-pressure chemical grouting device for surrounding rock in different directions of a high-pressure waterway system. Background Technology

[0002] High-pressure hydraulic tunnel surrounding rock chemical grouting involves injecting grout into the pores or fissures of the soil and rock mass using a pressure system, which then solidifies and impermeables the surrounding rock to improve its integrity, impermeability, and bearing capacity. The availability of high-pressure chemical grouting devices suitable for different directions in both horizontal and inclined high-pressure waterway systems is crucial for ensuring effective seepage prevention or reinforcement of the surrounding rock.

[0003] Currently, traditional high-pressure chemical grouting of surrounding rock mostly adopts the method of burying the grout pipe or using airbags to block the grout opening. This method has several drawbacks: firstly, it is inefficient and prone to high-pressure grout leakage; secondly, the bottom of the grout inlet and outlet pipes in the hole, especially the outlet pipe, is prone to blockage; and thirdly, the process of removing the grout and replacing it with cement grout after grouting is complex, with many potential quality problems and environmental pollution. These issues limit its large-scale use. Although some methods have adopted the method of laying grouting pipes in the hole and using quick-setting materials such as epoxy mortar to seal the grout opening, these methods are difficult to adapt to both upward and downward drilling grouting and are prone to grout backflow under high pressure. Utility Model Content

[0004] The purpose of this invention is to provide a high-pressure chemical grouting device for different directions of surrounding rock in a high-pressure waterway system. This solves the problem that existing methods, which use grouting pipes laid inside the borehole and epoxy mortar quick-setting material to seal the borehole opening, are difficult to adapt to both upward and downward drilling grouting and are prone to backflow of grout under high pressure.

[0005] To achieve the above objectives, this utility model employs a high-pressure chemical grouting device for different directions of surrounding rock in a high-pressure waterway system, comprising a grout outlet pipe, a grout inlet pipe, a first sealing element, a second sealing element, and micro-expansion quick-setting cement. The micro-expansion quick-setting cement is fixedly sleeved on the outside of the grout outlet pipe and the grout inlet pipe, respectively. The first sealing element is fixedly connected to the grout outlet pipe and located on the grout outlet pipe, and the second sealing element is fixedly connected to the grout inlet pipe and located on the grout inlet pipe.

[0006] The high-pressure chemical grouting device for different directions of surrounding rock in the high-pressure waterway system further includes a first perforated pipe and a second perforated pipe. The first perforated pipe is located at the end of the grout outlet pipe, and the second perforated pipe is located on the grout inlet pipe.

[0007] The first sealing element is a high-pressure ball valve, which is fixedly connected to the slurry outlet pipe and located on the slurry outlet pipe.

[0008] The second sealing element includes a high-pressure check valve, which is fixedly connected to the slurry inlet pipe and located on the slurry inlet pipe.

[0009] This invention relates to a high-pressure chemical grouting device for surrounding rock in different directions within a high-pressure waterway system. When drilling upwards, a short pipe serves as the grout inlet pipe, and a long pipe as the grout outlet pipe. When drilling downwards, a long pipe serves as the grout inlet pipe, and a short pipe as the grout outlet pipe. Micro-expansion quick-setting cement acts as a blocking section. The orifice is blocked by cement mortar containing expansion agents and quick-setting agents to fix the grout inlet and outlet pipes. In this method, the device is unaffected by drilling orientation, orifice blockage, air and sewage within the borehole, blockage at the ends of the grout inlet and outlet pipes, or grout backflow. It utilizes a pressurization system. The grout is injected into the borehole through the inlet pipe. After the air and wastewater in the borehole are vented through the outlet pipe, the outlet pipe is closed, and the grout is injected into the surrounding rock pores or fissures under pure pressure. After the completion requirements are met, the grout is sealed and allowed to solidify. Once the grout has gelled and solidified, the inlet and outlet pipes outside the borehole are removed directly from the root outside the borehole. This method ensures efficient, rapid, and economical chemical grouting for boreholes with different orientations and guarantees grouting quality. The above method allows for simple and quick adjustments to be made for simultaneous upward and downward drilling grouting and solves the problem of easy backflow of grout in the borehole under high pressure. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the high-pressure chemical grouting device for different directions of surrounding rock in a high-pressure waterway system according to this utility model.

[0012] Figure 2 This is the utility model Figure 1 Enlarged view of the local structure at point A.

[0013] Figure 3 This is the utility model Figure 1 Enlarged view of the local structure at point B.

[0014] Figure 4 This is a partial structural schematic diagram of the high-pressure chemical grouting device for different directions of surrounding rock in a high-pressure waterway system according to this utility model.

[0015] 100-Concrete lining layer, 101-Grouting outlet pipe, 102-Grouting inlet pipe, 103-Micro-expansion quick-setting cement, 104-First perforated pipe, 105-Second perforated pipe, 106-High-pressure ball valve, 107-High-pressure check valve. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0017] Please see Figures 1-4 This utility model provides a high-pressure chemical grouting device for different directions of surrounding rock in a high-pressure waterway system: it includes a grout outlet pipe 101, a grout inlet pipe 102, a first sealing element, a second sealing element, and micro-expansion quick-setting cement 103. The micro-expansion quick-setting cement 103 is fixedly sleeved on the outside of the grout outlet pipe 101 and the grout inlet pipe 102, respectively. The first sealing element is fixedly connected to the grout outlet pipe 101 and located on the grout outlet pipe 101, and the second sealing element is fixedly connected to the grout inlet pipe 102 and located on the grout inlet pipe 102.

[0018] In this embodiment, when drilling upwards, a short pipe is used as the grout inlet pipe 102 and a long pipe as the grout outlet pipe 101; when drilling downwards, a long pipe is used as the grout inlet pipe 102 and a short pipe as the grout outlet pipe 101. The micro-expansion quick-setting cement 103 serves as a blocking section, and its orifice is blocked by cement mortar with added expansion agent and quick-setting agent to fix the grout inlet pipe 102 and the grout outlet pipe 101. In the above method, it is not affected by drilling orientation, orifice blockage, air and sewage in the hole, blockage at the ends of the grout inlet and outlet pipes in the hole, or grout backflow. The grout is pushed through the […] using a pressurization system. The grout inlet pipe 102 is pressed into the hole. After the grout is discharged from the hole by the grout outlet pipe 101, the grout outlet pipe 101 is closed and the grout is injected into the surrounding rock pores or fissures under pure pressure. After the completion requirements are met, the grout is closed and left to solidify. After the grout has gelled and solidified, the grout inlet and outlet pipes 101 outside the hole are directly removed from the root outside the hole. This method can ensure efficient, fast and economical chemical grouting for drilling holes with different orientations of the surrounding rock, and ensure the grouting quality. The above method can be easily and quickly adjusted to be applicable to both upward and downward drilling grouting, and solves the problem of easy backflow of grout in the hole under high pressure.

[0019] Furthermore, the high-pressure chemical grouting device for different directions of surrounding rock in the high-pressure waterway system also includes a first perforated pipe 104 and a second perforated pipe 105. The first perforated pipe 104 is disposed at the end of the grout outlet pipe 101, and the second perforated pipe 105 is disposed on the grout inlet pipe 102.

[0020] In this embodiment, the end of the slurry outlet pipe 101 is provided with the first perforated pipe 104, and the end of the slurry inlet pipe 102 is provided with the second perforated pipe 105. The first perforated pipe 104 and the second perforated pipe 105 are a plurality of uniform small holes.

[0021] Furthermore, the first sealing element is a high-pressure ball valve 106, which is fixedly connected to the slurry outlet pipe 101 and located on the slurry outlet pipe 101; the second sealing element includes a high-pressure check valve 107, which is fixedly connected to the slurry inlet pipe 102 and located on the slurry inlet pipe 102.

[0022] In this embodiment, both the high-pressure ball valve 106 and the high-pressure check valve 107 are high-pressure valves, providing a more stable seal for the pipeline.

[0023] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A high-pressure chemical grouting device for surrounding rock in different directions of a high-pressure waterway system, characterized in that, It includes a slurry outlet pipe, a slurry inlet pipe, a first sealing element, a second sealing element, and micro-expansion quick-setting cement. The micro-expansion quick-setting cement is fixedly sleeved on the outside of the slurry outlet pipe and the slurry inlet pipe, respectively. The first sealing element is fixedly connected to the slurry outlet pipe and located on the slurry outlet pipe, and the second sealing element is fixedly connected to the slurry inlet pipe and located on the slurry inlet pipe.

2. The high-pressure chemical grouting device for surrounding rock in different directions of a high-pressure waterway system as described in claim 1, characterized in that, The high-pressure chemical grouting device for different directions of surrounding rock in a high-pressure waterway system further includes a first perforated pipe and a second perforated pipe. The first perforated pipe is located at the end of the grout outlet pipe, and the second perforated pipe is located on the grout inlet pipe.

3. The high-pressure chemical grouting device for surrounding rock in different directions of a high-pressure waterway system as described in claim 2, characterized in that, The first sealing element is a high-pressure ball valve, which is fixedly connected to the slurry outlet pipe and located on the slurry outlet pipe.

4. The high-pressure chemical grouting device for surrounding rock in different directions of a high-pressure waterway system as described in claim 3, characterized in that, The second sealing element includes a high-pressure check valve, which is fixedly connected to the slurry inlet pipe and located on the slurry inlet pipe.

Images