Grouting non-return device at bottom of stratum settlement monitoring bedrock mark

Abstract

The utility model relates to the technical field of bedrock marks, and provides a stratum settlement monitoring bedrock mark bottom grouting non-return device which comprises an upper assembly and a lower assembly, the upper assembly is provided with a drainage hole, the lower assembly is provided with a flow guide hole, an annular guide hole is formed in the bottom of the upper assembly, and an annular guide piece and a spring are arranged in the annular guide hole. The annular guide piece is in sliding contact with the inner wall of the annular guide hole, and the spring enables the annular guide piece to have an upward moving trend; a sealing assembly is arranged between the upper assembly and the lower assembly and comprises a sealing plate, a sealing plug, a first annular folding piece and a second annular folding piece, the sealing plate is in sliding contact with the inner wall of the flow guide hole and keeps sealing, a through hole is formed in the sealing plate, and the sealing plug is in sliding contact with the inner wall of the flow drainage hole and keeps sealing. The sealing plug is fixedly connected with the sealing plate, and the two ends of the first annular folding piece and the two ends of the second annular folding piece are fixedly connected with the upper assembly and the sealing plate correspondingly and keep sealed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the bedrock mark technical field, concretely relates to a stratum subsidence monitoring bedrock mark bottom grouting check device. BACKGROUND

[0002] The bedrock mark is a ground level observation mark buried in hard rock or stable stratum, is a level measurement facility rigidly connected to the ground and stably transmitted to the ground surface through hard connection, and is a ground subsidence level measurement reference point. The bedrock mark construction process is similar, and all adopts the geological drilling technology to drill into the bedrock surface, and then the protection pipe is lowered, then the small diameter drill bit is replaced in the protection pipe to continue drilling into the bedrock for 5-10m, after flushing the rock debris, the various forms of "mark pole" + "mark bottom" combination is lowered in the small hole, so that it is stably settled on the bedrock, so that the bedrock stability is truly transmitted to the ground, and the mark bottom mark pole is not displaced with the upper loose stratum compression. After completing other auxiliary work, the bedrock mark system is completed.

[0003] The current bedrock mark bottom is generally designed with a check device to avoid the phenomenon of cement slurry backflow after grouting operation. The utility model discloses a bedrock mark bottom assembly with check valve device, which can avoid the phenomenon of cement slurry backflow, but the cement slurry is easy to enter between the inner wall of the first slot and the cylinder, and then affect the spring expansion, so that the check device is damaged too early, and the cement slurry backflow is not ideal. UTILITY MODEL CONTENTS

[0004] In view of the defects in the prior art, the utility model aims at providing a stratum subsidence monitoring bedrock mark bottom grouting check device, which can avoid the phenomenon of cement slurry backflow and will not cause the check device to be damaged too early.

[0005] In order to achieve the above-mentioned purpose, the utility model realizes the technical scheme as follows: a stratum subsidence monitoring bedrock mark bottom grouting check device, including upper assembly and lower assembly, the upper assembly has a flow hole, the lower assembly has a flow guide hole, the bottom of the upper assembly is provided with an annular guide hole extending upward, the annular guide hole is communicated with the outer side surface of the upper assembly through the air outlet hole, the annular guide hole is provided with an annular guide and a spring, the annular guide is in sliding contact with the inner wall of the annular guide hole, and the spring makes the annular guide have a tendency to move upward.

[0006] A sealing assembly is arranged between the upper assembly and the lower assembly, the sealing assembly comprises a sealing plate, a sealing plug, a first annular folding piece and a second annular folding piece, the sealing plate is in sliding contact with and keeps sealed with the inner wall of the flow guide hole, a through hole is formed in the sealing plate and located at the inner side of the annular guide piece, the sealing plug is in sliding contact with and keeps sealed with the inner wall of the flow outlet hole, the sealing plug is fixedly connected with the sealing plate, the first annular folding piece and the second annular folding piece are arranged at the inner and outer sides of the annular guide piece respectively, and the two ends of the first annular folding piece and the two ends of the second annular folding piece are fixedly connected with and kept sealed with the upper assembly and the sealing plate respectively.

[0007] Further, an annular sealing ring is fixedly installed on the outer side of the sealing plate.

[0008] Further, a conical surface protruding upward is formed on the top of the sealing plug.

[0009] Further, a plurality of flow guide grooves are formed in the bottom of the lower assembly, and the flow guide grooves are communicated between the flow guide hole and the outer side of the lower assembly.

[0010] Further, the number of the flow guide grooves is six, and the six flow guide grooves are arranged at equal intervals along the circumference of the lower assembly.

[0011] The device has the advantages that when the grouting operation is performed, the cement slurry generates downward pressure on the sealing plug, the sealing plug and the sealing plate move downward, the cement slurry flows out through the flow outlet hole, the through hole and the flow guide hole, and the grouting operation is completed. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is an internal section structure schematic view of the device;

[0013] Figure 2 It is an enlarged structure schematic view of the A part in the middle. Figure 1

[0014] Reference signs: 10-upper assembly, 11-flow outlet hole, 12-pole connecting port, 13-annular guide hole, 14-annular guide piece, 15-spring, 16-air outlet hole, 20-lower assembly, 21-flow guide hole, 22-flow guide groove, 30-sealing assembly, 31-sealing plate, 32-sealing plug, 33-first annular folding piece, 34-second annular folding piece, 35-annular sealing ring, 36-conical surface, 37-through hole.​ DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0016] In this application, unless otherwise specified or limited, the terms "connect" and "fix" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0017] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "horizontal", "top", "bottom", "up", "down", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0018] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of this utility model, "plurality" means more than two, unless otherwise specifically defined.

[0019] like Figures 1-2 As shown, the utility model provides a bedrock marker bottom grouting check device for monitoring stratum settlement, including an upper component 10 and a lower component 20, the upper component 10 has a drain hole 11 and a marker connection port 12, and the lower component 20 has a guide hole 21. The above contents are all existing technologies, and the specific structure will not be repeated here.

[0020] The bottom of the upper assembly 10 has an upwardly extending annular guide hole 13. This hole communicates with the outer surface of the upper assembly 10 via an air outlet 16, which may be multiple. An annular guide member 14 and a spring 15 are positioned within the annular guide hole 13. The annular guide member 14 is in sliding contact with the inner wall of the annular guide hole 13. The first end of the spring 15 is fixedly connected to the inner wall of the annular guide hole 13, while the second end of the spring 15 is fixedly connected to the annular guide member 14. The spring 15 encourages the annular guide member 14 to move upward.

[0021] A sealing assembly 30 is arranged between the upper assembly 10 and the lower assembly 20, and comprises a sealing plate 31, a sealing plug 32, a first annular folding part 33 and a second annular folding part 34. The sealing plate 31 is arranged in the flow guide hole 21 and is in sliding contact with the inner wall of the flow guide hole 21 and keeps sealed. The sealing plate 31 is provided with a through hole 37 extending in the longitudinal direction, which is located on the inner side of the annular guide 14. The sealing plug 32 is arranged in the discharge hole 11 and is in sliding contact with the inner wall of the discharge hole 11 and keeps sealed. The sealing plug 32 is fixedly connected with the sealing plate 31. The first annular folding part 33 and the second annular folding part 34 are arranged on the inner and outer sides of the annular guide 14 respectively. The two ends of the first annular folding part 33 and the two ends of the second annular folding part 34 are fixedly connected with the upper assembly 10 and the sealing plate 31 respectively and keep sealed.

[0022] In the initial state, the sealing plug 32 is inserted into the discharge hole 11 due to the presence of the spring 15, and the discharge hole 11 is blocked.

[0023] During the grouting operation, the cement slurry in the staff enters the discharge hole 11, and the cement slurry generates a downward pressure on the sealing plug 32. The sealing plug 32 and the sealing plate 31 move downward, and the cement slurry passes through the discharge hole 11 and the through hole 37 and flows out through the flow guide hole 21, completing the grouting operation. After the grouting operation is completed, the sealing assembly 30 is reset under the action of the spring 15, thereby preventing the phenomenon of cement slurry backflow.

[0024] During the grouting operation, the presence of the first folding part and the second folding part can avoid the contact between the cement slurry and the annular guide 14 and the spring 15, so that the presence of the cement slurry will not cause the premature damage of the check device, thereby ensuring the effect of preventing the backflow of the cement slurry. After the grouting operation is completed, the cement slurry will contact the annular guide 14 and the spring 15, but at this time the grouting operation has been successfully completed.

[0025] In an embodiment, an annular sealing ring 35 is fixedly installed on the outer side of the sealing plate 31, so as to further improve the sealing between the inner wall of the flow guide hole 21 and the sealing plate 31, and avoid the contact between the cement slurry and the annular guide 14 and the spring 15 during the grouting operation.

[0026] In an embodiment, a conical surface 36 protruding upward is formed on the top of the sealing plug 32. The design of the conical surface 36 can increase the contact surface with the cement slurry, thereby increasing the pressure of the cement slurry on the sealing plug 32, and can also guide the cement slurry, so that the cement slurry can quickly enter between the sealing plate 31 and the upper assembly 10.

[0027] In an embodiment, a plurality of flow guide grooves 22 are formed on the bottom of the lower assembly 20, and the flow guide grooves 22 communicate the flow guide hole 21 with the outer side of the lower assembly 20.

[0028] The cement slurry flows downward through the flow guide holes 21 and the flow guide grooves 22, and finally flows into the space between the marker assembly, the marker and the surrounding rock through the plurality of flow guide grooves 22, and after the grouting is completed, the marker is fixed to ensure that the cement slurry is uniformly distributed.

[0029] In one embodiment, the number of the flow guide grooves 22 is six, and the six flow guide grooves 22 are arranged at equal intervals along the circumference of the lower assembly 20.

[0030] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model.

[0031] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A bedrock marker bottom grouting check device for monitoring stratum settlement, comprising an upper component and a lower component, wherein the upper component has a drain hole and the lower component has a diversion hole, and is characterized by: An upwardly extending annular guide hole is formed at the bottom of the upper component. The annular guide hole is connected to the outer side surface of the upper component via an air outlet. An annular guide member and a spring are provided in the annular guide hole. The annular guide member is in sliding contact with the inner wall of the annular guide hole. The spring causes the annular guide member to have an upward movement tendency. A sealing assembly is provided between the upper component and the lower component, and the sealing assembly includes a sealing plate, a sealing plug, a first annular folding member and a second annular folding member. The sealing plate is in sliding contact with the inner wall of the guide hole and maintains a seal. A through hole is opened on the sealing plate, and the through hole is located on the inner side of the annular guide. The sealing plug is in sliding contact with the inner wall of the leakage hole and maintains a seal. The sealing plug is fixedly connected to the sealing plate. The first annular folding member and the second annular folding member are respectively arranged on the inner and outer sides of the annular guide. The two ends of the first annular folding member and the two ends of the second annular folding member are respectively fixedly connected to the upper component and the sealing plate and maintain a seal.

2. A bedrock marker bottom grouting check device for monitoring stratum subsidence according to claim 1, characterized in that: An annular sealing ring is fixedly mounted on the outer side surface of the sealing plate.

3. The backstop device for grouting bottom of bedrock marker for monitoring stratum subsidence according to claim 1 is characterized by: The top of the sealing plug is formed with an upwardly convex conical surface.

4. The backstop device for grouting bottom of bedrock marker for monitoring stratum subsidence according to claim 1 is characterized by: A plurality of guide grooves are formed on the bottom of the lower component, and the guide grooves connect the guide holes with the outer side surface of the lower component.

5. The backstop device for grouting bottom of bedrock marker for monitoring stratum subsidence according to claim 4 is characterized by: The number of the guide grooves is six, and the six guide grooves are arranged at equal intervals along the circumference of the lower component.

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