A device for monitoring the pressure of the water level at the orifice of a long observation hole for grouting treatment

Abstract

The application provides a long-observation-hole orifice water level and pressure integrated monitoring device for grouting treatment, which comprises a connecting head, a sealing head and a high-pressure pipe, the high-pressure pipe is fixedly connected to the connecting head, and a pressure gauge is connected to the top end of the high-pressure pipe; a throttle pipe is also fixedly connected to the connecting head, and a throttle valve switch is installed on the throttle pipe. The long-observation-hole orifice water level and pressure integrated monitoring device has a sealing structure of a water level measuring channel, the orifice is in a closed state during non-measuring, the throttle pipe can be opened to lower a measuring rope to contact a liquid surface when measuring is needed, water level data can be accurately obtained, when the water level rises to the orifice and forms pressure, the pressure gauge can display the orifice pressure change in real time, so that the hydrological dynamics in the hole during grouting can be completely reflected, the blank that the orifice water level and the orifice pressure of the long-observation-hole cannot be monitored at the same time during grouting is filled, real-time data support for grouting effect evaluation and construction regulation is provided, and the device is economical and practical.

Description

Technical Field

[0001] This invention belongs to the field of water level monitoring technology, specifically relating to a device for integrated monitoring of water level and pressure at the orifice of a long observation hole used in grouting treatment. Background Technology

[0002] In regional governance projects, such as goaf remediation, tunnel engineering, dam curtain grouting, and coal mine area remediation, integrated monitoring of water level and pressure at long-term observation wells is crucial for real-time understanding of grout diffusion dynamics, evaluating grouting effectiveness, and ensuring construction safety. These long-term observation wells, acting as "underground windows" within the grouting influence zone, reflect whether grout has reached that location based on water level changes. In projects aiming to form a seepage barrier, a significant rise in water level or pressure at the long-term observation wells on the other side of the barrier indicates potential seepage around the grout or barrier defects, requiring timely replenishment. Furthermore, analyzing the pressure response time and amplitude of long-term observation wells at different locations allows for the inversion of the grout diffusion direction, rate, and range within the strata, providing a basis for dynamically adjusting grouting parameters and achieving precise and information-based grouting control. In projects such as mine area remediation, goaf remediation, tunnel engineering, and dam curtain grouting, there is an urgent need for long-term synchronous monitoring of water level and orifice pressure during grouting. However, due to the lack of suitable integrated monitoring devices, existing methods can usually only achieve single monitoring of water level or pressure, and cannot meet the requirements of bidirectional synchronous monitoring.

[0003] How to achieve synchronous monitoring of the water level inside the borehole and the pressure at the borehole orifice, that is, to be able to measure the water level inside the borehole at any time during the grouting process and to monitor the pressure change at the borehole orifice in real time after the water level rises to the orifice, has become a key challenge in the current long-term borehole monitoring technology.

[0004] Based on this, a device for integrated monitoring of water level and pressure at the orifice of long observation holes for grouting treatment is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a device for integrated monitoring of water level and pressure at the orifice of a long observation hole for grouting treatment, in order to address the shortcomings of the prior art mentioned above.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a device for integrated monitoring of water level and pressure at the orifice of long observation holes for grouting treatment, comprising: The connector is a cylindrical structure that extends through both ends; A cap, which is fixed to the top opening of the connector; A high-pressure pipe, which is fixedly connected to the connector; A pressure gauge, which is connected to the top of the high-pressure pipe; Throttle valve pipe, which is also fixedly connected to the connector.

[0007] As a further explanation of the present invention, it also includes; Throttle valve switch; The throttle valve switch is installed on the throttle valve pipe.

[0008] As a further explanation of the present invention, the throttle valve switch on the throttle valve pipe remains closed when not measuring, to prevent overflow when the water level rises. The throttle valve is opened during measurement to facilitate the lowering of the measuring rope.

[0009] As a further explanation of the present invention, the end cap is made of steel plate, and the end cap is cut into a circle that matches the connector, and the end cap is welded and sealed to the top of the connector.

[0010] As a further explanation of the present invention, the end cap is also pre-drilled with two holes for installing the throttle valve pipe and the high-pressure pipe, respectively.

[0011] As a further explanation of the present invention, the connector is specifically a short-connecting sleeve that matches the long-viewing-hole sleeve.

[0012] Compared with the prior art, the present invention has the following advantages: The integrated monitoring device for water level and pressure at the orifice of a long-observation borehole in this invention consists of a connector, a sealing head, a high-pressure pipe, a pressure gauge, a throttle valve pipe, and a throttle valve switch. It features a sealed structure for the water level measurement channel, keeping the orifice closed during non-measurement periods to prevent overflow when the water level rises. When measurement is required, the throttle valve pipe can be opened to lower the measuring rope to contact the liquid surface, accurately acquiring water level data. When the water level rises to the orifice and pressure is generated, the pressure gauge displays the orifice pressure change in real time, thus comprehensively reflecting the hydrological dynamics within the borehole during grouting. This fills the gap in simultaneously monitoring the water level and pressure at the orifice of long-observation boreholes during grouting, providing real-time data support for grouting effect evaluation and construction control, and is economical and practical. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the overall structure of the present invention.

[0014] Explanation of reference numerals in the attached figures: 1-Throttle valve pipe; 2-Throttle valve switch; 3-Pressure gauge; 4-High pressure pipe; 5-End cap; 6-Connector. Detailed Implementation

[0015] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain the invention and are not intended to limit the invention. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] like Figure 1 As shown, the present invention provides a technical solution: a device for integrated monitoring of water level and pressure at the orifice of a long observation hole for grouting treatment, comprising: a connector 6, a sealing head 5, a high-pressure pipe 4, a pressure gauge 3, and a throttle valve pipe 1; The connector 6 is a cylindrical structure with both ends through it. Specifically, it is a short-connecting sleeve that matches the long observation hole sleeve. When in use, it forms an integrated monitoring device for water level and pressure at the orifice of the long observation hole with the existing long observation hole sleeve. The end cap 5 is fixed at the top opening of the connector 6. The end cap 5 is made of steel plate and is cut into a circle that matches the connector 6. The end cap 5 is then welded and sealed to the top of the connector 6.

[0017] In this embodiment, the end cap 5 is also pre-drilled with two holes for installing the throttle valve pipe 1 and the high-pressure pipe 4 respectively. The high-pressure pipe 4 is fixedly connected to the connector 6, and the pressure gauge 3 is connected to the top of the high-pressure pipe 4. Pressure gauge 3 is specifically a mechanical pressure gauge, serving as a pressure monitoring element at the orifice. When the water level inside the orifice rises and pressure is generated, the pressure gauge can display the changes in real time.

[0018] The throttle valve pipe 1 is also fixedly connected to the connector 6, and a throttle valve switch 2 is also installed on the throttle valve pipe 1.

[0019] The throttle valve switch 2 on the throttle valve pipe 1 remains closed when not measuring, to prevent overflow when the water level rises. During measurement, throttle valve switch 2 is opened to facilitate the lowering of the measuring rope.

[0020] Specifically, when measurement is required, the measuring rope can be lowered into contact with the liquid surface by opening the throttle valve pipe 1 channel to accurately obtain water level data.

[0021] When the water level rises to the orifice of the long observation casing and pressure is generated, the pressure change at the orifice is displayed in real time by pressure gauge 3, thus fully reflecting the hydrological dynamics inside the hole during the grouting process and providing real-time data support for grouting effect evaluation and construction control.

[0022] Example 1: In 2024, the above-mentioned integrated monitoring device for water level and pressure at the orifice of the long-term observation hole was applied to the treatment project of "collapse column" in a coal mine of Huaibei Mining Group in Anhui Province. It performed well throughout the entire project cycle, achieving borehole water level measurement before the water level rises, and borehole pressure monitoring after the water level rises to the borehole opening in the later stage of grouting, with pressure values ​​recorded in the range of 1-16 MPa.

[0023] Example 2: In 2025, the above-mentioned integrated monitoring device for water level and pressure at the orifice of the long-term observation hole was successfully applied to the "four-containing" treatment project of two coal mines of Huaibei Mining Group. The entire process of monitoring the water level changes in the borehole and the borehole pressure from the initial rise, the change in borehole pressure from 0.38MPa to 2MPa, to the later decline and stabilization, was recorded. The water level in one borehole eventually dropped by about 12 meters and remained stable for a long period of time.

[0024] Example 3: In 2025, five sets of the above-mentioned integrated monitoring device for water level and pressure at the orifice of the long-term observation hole were manufactured by Huaibei Mining Group and applied to the "four-containing" treatment project of Qingdong Coal Mine.

[0025] In summary, the integrated water level and pressure monitoring device at the orifice of the long-observation borehole in this embodiment has a sealed structure for the water level measurement channel. During non-measurement periods, the orifice remains closed to prevent overflow when the water level rises. When measurement is required, the throttle valve can be opened to lower the measuring rope to contact the liquid surface, accurately obtaining water level data. When the water level rises to the orifice and pressure is generated, the pressure change at the orifice is displayed in real time by a mechanical pressure gauge, thus fully reflecting the hydrological dynamics within the borehole during grouting and providing real-time data support for grouting effect evaluation and construction control.

[0026] It should be further noted that the accompanying drawings and embodiments of the present invention mainly describe the concept of the present invention. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of the present invention, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0027] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0028] The directional terms "inner" and "outer" refer to the inner and outer sides relative to the outline of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," or "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0029] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for integrated monitoring of water level and pressure at the orifice of long observation holes used in grouting treatment, characterized in that, include: Connector (6), wherein the connector (6) is a cylindrical structure with both ends through; End cap (5), said end cap (5) is fixed at the top opening of connector (6); High-pressure pipe (4), which is fixedly connected to connector (6); Pressure gauge (3), which is connected to the top of the high-pressure pipe (4); Throttle valve pipe (1), which is also fixedly connected to connector (6).

2. The device for integrated monitoring of water level and pressure at the orifice of long observation holes for grouting treatment according to claim 1, characterized in that, Also includes; Throttle valve switch (2); The throttle valve switch (2) is installed on the throttle valve pipe (1).

3. The device for integrated monitoring of water level and pressure at the orifice of long observation holes for grouting treatment according to claim 2, characterized in that, The throttle valve switch (2) on the throttle valve pipe (1) remains closed when not measuring to prevent overflow when the water level rises; During measurement, the throttle valve switch (2) is opened to facilitate the lowering of the measuring rope.

4. The device for integrated monitoring of water level and pressure at the orifice of long observation holes for grouting treatment according to claim 3, characterized in that, The end cap (5) is made of steel plate and is cut into a circle that matches the connector (6); the end cap (5) is welded and sealed to the top of the connector (6).

5. The device for integrated monitoring of water level and pressure at the orifice of long observation holes for grouting treatment according to claim 4, characterized in that, The end cap (5) is also pre-drilled with two holes for the installation of the throttle valve pipe (1) and the high-pressure pipe (4), respectively.

6. The device for integrated monitoring of water level and pressure at the orifice of long observation holes for grouting treatment according to claim 5, characterized in that, The connector (6) is specifically a short-connecting sleeve that matches the long-viewing-hole sleeve.

7. The device for integrated monitoring of water level and pressure at the orifice of long observation holes for grouting treatment according to claim 6, characterized in that, The pressure gauge (3) is specifically a mechanical pressure gauge.

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