A dynamically responsive pipe shed apparatus for controlling formation subsidence

Abstract

The utility model provides a kind of dynamic response pipe shed device of controlling stratum subsidence, comprising: pipe shed steel pipe, pipe shed steel pipe surface distribution grouting hole, tail part installs grouting valve, each section pipe shed steel pipe head welding grouting independent closed groove, grouting independent closed groove is equipped with joint;Pipe shed steel pipe inner wall closely fiber bragg grating sensor, extend pipe shed steel pipe tail and fiber bragg grating monitor are connected, hollow part erects partition grouting pipe bundle, by clamp fixed position;Partition grouting pipe bundle is connected in pipe shed steel pipe tail with partition grouting valve, close grouting independent closed groove joint area installs tee, by grouting hose and joint are connected;After grouting is completed, fiber bragg grating sensor will pipe shed strain data be transmitted to fiber bragg grating monitor and be analyzed, according to the analysis result, specific area is carried out accurate, quantitative, low pressure compensation grouting.The utility model's device carries out accurate grouting compensation strategy to high-risk area, avoids grouting deficiency, and timely carries out dynamic response to stratum subsidence.

Description

Technical Field

[0001] This utility model relates to the field of tunnel and underground engineering technology, and in particular to a dynamic response pipe roof device for controlling ground subsidence. Background Technology

[0002] Large-diameter pipe roof support technology is a primary means of controlling ground deformation when tunneling under existing railway lines. This technology involves constructing a support structure above the tunnel arch using large-diameter steel pipes to share the load of the overlying soil and suppress excavation disturbance. However, traditional pipe roof support methods suffer from several technical drawbacks, including a lack of effective coordination between the support structure and surrounding rock deformation, uncontrollable grouting range, and a disconnect between monitoring and control.

[0003] Insufficient passive support and dynamic response: Traditional pipe roof support structures, as rigid load-bearing bodies, lack the ability to monitor and respond to changes in stress and displacement of the surrounding strata in real time. This results in the adjustment of support force lagging behind the actual deformation of the strata, leading to a lack of effective coordination between the support structure and the deformation of the surrounding rock, which in turn causes local stress concentration and may even lead to the failure of the support system.

[0004] Limitations of grouting technology: Current grouting methods used for reinforcement mostly adopt "integral grouting" or "end grouting". The grouting range is often uncontrollable, and the grout may spread uncontrollably to non-target areas, resulting in an effective reinforcement rate that is not as good as the ideal standard. For high-risk areas (such as weak zones in the arch), there is a lack of precise grouting compensation strategies, which can easily lead to insufficient grouting and increase the threat to the safety of the structures being traversed.

[0005] Disconnect between monitoring and control: Although existing automated monitoring systems can provide some surface settlement data, the feedback information often lags behind the actual construction situation, and the decision-making process relies on human experience. This "monitoring-response" model is usually time-consuming, may miss critical deformation treatment windows, and makes it difficult to achieve proactive early warning and control of the settlement process.

[0006] The aforementioned defects make it difficult for traditional pipe roof steel pipes to meet the stringent requirements for ground settlement of important superstructures (such as ancient buildings, bridges, operating subways, densely packed pipeline areas, large buildings, etc.). There is an urgent need to optimize the structure and grouting method of traditional pipe roof steel pipes to overcome the shortcomings of existing technology and meet the actual needs of engineering projects. Utility Model Content

[0007] In view of this, the present invention provides a dynamic response pipe roof device for controlling ground subsidence to solve the above problems.

[0008] This utility model provides a dynamic response pipe roof device for controlling ground subsidence, comprising: a fiber optic grating sensor (1), a pipe roof steel pipe (9), a grouting valve (10), and a fiber optic grating monitor (13); the fiber optic grating sensor (1) is attached tightly to the inner surface of the pipe roof steel pipe (9), stretched straight from head to tail, and extends out from the tail of the pipe roof steel pipe (9) to connect to the fiber optic grating monitor (13); the grouting valve (10) is installed at the tail of the pipe roof steel pipe (9) for grouting inside the pipe roof; after grouting is completed, the fiber optic grating sensor (1) transmits the pipe roof strain data to the fiber optic grating monitor (13) for analysis, and performs precise, quantitative, low-pressure compensation grouting in a specific area based on the analysis results.

[0009] In another implementation of this utility model, it also includes: a joint (3), an independent grouting sealing groove (4), and a grouting hole (5); the independent grouting sealing groove (4) is welded to the inner surface of the head of each pipe roof steel pipe (9), and the sealed space is separated from the inner cavity space of the pipe roof steel pipe (9). The joint (3) is installed below the independent grouting sealing groove (4), and the grouting hole (5) is set on the surface of the pipe roof steel pipe (9).

[0010] In another implementation of this utility model, it also includes: grouting hose (2), partitioned grouting tube bundle (6), clamp (7), and partitioned independent grouting valve (11); the partitioned grouting tube bundle (6) is installed in the hollow part of the pipe roof steel pipe (9) and fixed in position by clamp (7). The head of the partitioned grouting tube bundle (6) is located at the head of the pipe roof steel pipe (9). The head of the partitioned grouting tube bundle (6) is fitted with a connector and connected to the connector (3) on the independent grouting closed groove (4) through the grouting hose (2); the partitioned independent grouting valve (11) is installed at the tail of the pipe roof steel pipe (9) and connected to the partitioned grouting tube bundle (6).

[0011] In another implementation of this utility model, it also includes: a tee (12); a tee (12) is installed in the joint area of ​​the middle section of the pipe roof steel pipe (9) near the grouting independent closed groove, and is connected to the joint through a grouting hose. Each grouting pipe bundle is connected to only one grouting independent closed groove through a joint or tee and a grouting hose. When the number of pipe roof steel pipe (9) is greater than 8 sections, each grouting pipe bundle is connected to the grouting independent closed groove of the two adjacent pipe roof steel pipe sections (9) through a joint or tee and a grouting hose.

[0012] In another implementation of this utility model, it also includes: threaded connection (8), where adjacent pipe roof steel pipe (9) sections are connected by threaded connection (8).

[0013] This utility model's dynamic response pipe roof device for controlling ground settlement can effectively control the settlement of strata where important buildings (structures) (such as ancient buildings, bridges, operating subways, densely packed pipeline areas, large buildings, etc.) are located, greatly reducing the time consumption of the "monitoring-response" mode, seizing the key deformation treatment window, and realizing forward-looking early warning and proactive control of the settlement process. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. By reading the detailed description of the embodiments below, the advantages and benefits of the solutions will become clear to those skilled in the art. The accompanying drawings are only for illustrating preferred embodiments and are not intended to limit the present utility model. In the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of a dynamic response pipe roof device for controlling ground subsidence, according to one embodiment of the present invention.

[0016] Figure 2 This is a schematic cross-sectional view of the grouting independent closed groove section of the pipe roof device according to an embodiment of the present invention.

[0017] Figure 3 This is a three-dimensional schematic diagram of the head and tail of the pipe shed device according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures:

[0019] Fiber grating sensor (1), grouting hose (2), connector (3), grouting independent closed groove (4), grouting hole (5), zoned grouting tube bundle (6), clamp (7), thread (8), pipe roof steel pipe (9), grouting valve (10), zoned independent grouting valve (11), tee (12), fiber grating monitor (13). Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in the embodiments of this utility model, the technical solutions in the embodiments of this utility model will be clearly and thoroughly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art should fall within the protection scope of this utility model.

[0021] Figure 1 A schematic diagram of a dynamic response pipe roof device for controlling ground subsidence provided in an embodiment of this utility model is shown below. Figure 1 As shown, this embodiment mainly includes:

[0022] Fiber grating sensor (1), pipe roof steel pipe (9), grouting valve (10), fiber grating monitor (13).

[0023] The fiber optic grating sensor (1) is attached to the inner surface of the steel pipe (9) of the pipe shed, stretched straight from head to tail, and extends out from the tail of the steel pipe (9) to connect to the fiber optic grating monitor (13).

[0024] The grouting valve (10) is installed at the tail of the steel pipe (9) of the pipe shed and is used to grout the inside of the pipe shed.

[0025] After grouting is completed, the fiber optic grating sensor (1) transmits the strain data of the pipe roof to the fiber optic grating monitor (13) for analysis. Based on the analysis results, precise, quantitative, and low-pressure compensation grouting is performed on specific areas.

[0026] For example, after grouting is completed, the fiber optic grating sensor (1) transmits the strain data of the pipe roof to the fiber optic grating monitor (13) for analysis. Based on the preset settlement threshold, the sensor data is analyzed to identify the abnormal deformation area, deformation magnitude and development trend of the pipe roof (i.e., the surrounding strata), predict potential settlement risks, determine the area that needs to be reinforced, the required grouting volume, pressure and duration, and control the grouting liquid to be delivered to the specific grouting tube bundle (6) to perform precise, quantitative and low-pressure compensation grouting in the specific area.

[0027] In another implementation of this utility model, it also includes: a joint (3), an independent grouting sealing groove (4), and a grouting hole (5); the independent grouting sealing groove (4) is welded to the inner surface of the head of each pipe roof steel pipe (9), and the sealed space is separated from the inner cavity space of the pipe roof steel pipe (9). The joint (3) is installed below the independent grouting sealing groove (4), and the grouting hole (5) is set on the surface of the pipe roof steel pipe (9).

[0028] In another implementation of this utility model, it also includes: grouting hose (2), partitioned grouting tube bundle (6), clamp (7), partitioned independent grouting valve (11); partitioned grouting tube bundle (6) is installed in the hollow part of the pipe roof steel pipe (9), and the position is fixed by clamp (7). The head of the partitioned grouting tube bundle (6) is located at the head of the pipe roof steel pipe (9). The head of the partitioned grouting tube bundle (6) is equipped with a joint, which is connected to the joint (3) on the grouting independent closed groove (4) through the grouting hose (2).

[0029] The independent grouting valve (11) is installed at the tail of the steel pipe (9) of the pipe shed, and the independent grouting valve (11) is connected to the grouting pipe bundle (6).

[0030] For example, such as Figure 3As shown, the grouting valve (10) and the independent grouting valve (11) are located at the tail of the pipe shed. The independent grouting valve (11) is connected to the corresponding grouting pipe bundle (6). The grouting pipe bundle (6) is arranged in the pipe shed steel pipe (9).

[0031] Grouting holes are provided on the surface of the steel pipe (9) of the pipe shed. Each steel pipe (9) has an independent grouting groove (4) welded on the surface of the head area. The space enclosed by the groove is independent of the cavity of the steel pipe (9), so that each group of grouting holes enclosed by the independent grouting groove (4) can be independently pressurized for grouting. This allows for targeted secondary grouting of the under-grouted parts. The distribution density of the grouting holes can be adjusted according to the actual engineering needs to achieve precise control of the grouting range.

[0032] During the first grouting, the inside of the pipe roof is grouted through the grouting valve (10). When the inside of the pipe roof is almost filled with grout, the grouting pipe bundle (6) and the grouting independent sealing groove (4) are grouted through the zonal independent grouting valve (11). Finally, grouting is carried out simultaneously so that the pressure difference between the zonal grouting pipe bundle (6) and the grouting independent sealing groove (4) is kept within a small range, so as to avoid the grouting hose (2) and the joint (3) from being damaged and leaking grout due to the large pressure difference.

[0033] In another implementation of this utility model, it further includes: a tee (12); a tee (12) is installed in the middle section of the pipe roof steel pipe (9), near the joint area of ​​the grouting independent closed groove, and is connected to the joint through a grouting hose, such as Figure 2 As shown, each grouting tube bundle is connected to only one independent grouting closed slot via a joint or tee and a grouting hose.

[0034] When the number of pipe sections (9) of the pipe shed is greater than 8, each grouting pipe bundle in the partition is connected to the grouting independent closed groove of the two adjacent pipe sections (9) through a joint or tee and a grouting hose.

[0035] In another implementation of this utility model, it also includes: threaded connection (8), where adjacent pipe roof steel pipe (9) sections are connected by threaded connection (8).

[0036] Specific embodiments of the present invention have now been described. Other embodiments are within the scope of the appended claims. In some cases, the actions described in the claims can be performed in a different order and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result.

[0037] It should be noted that all directional indicators (such as up, down, left, right, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship between the components in a certain specific order (as shown in the figure). If the specific order changes, the directional indicator will also change accordingly.

[0038] In the description of this utility model, the terms "first" and "second" are used only for convenience in describing different components or names, and should not be construed as indicating or implying a sequential relationship, relative importance, or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" and "second" may explicitly or implicitly include at least one of that feature.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0040] It should be noted that although specific embodiments of the present invention have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of the present invention. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of the present invention.

[0041] The examples of this utility model embodiment are intended to concisely illustrate the technical features of this utility model embodiment, enabling those skilled in the art to intuitively understand the technical features of this utility model embodiment, and are not intended to be an improper limitation of this utility model embodiment.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dynamic response pipe roof device for controlling ground subsidence, characterized in that, include: Fiber grating sensor (1), pipe roof steel pipe (9), grouting valve (10), fiber grating monitor (13). The fiber optic grating sensor (1) is attached to the inner surface of the steel pipe (9) of the pipe shed, stretched straight from head to tail, and extends out from the tail of the steel pipe (9) to connect to the fiber optic grating monitor (13). The grouting valve (10) is installed at the tail of the steel pipe (9) of the pipe shed and is used to grout the inside of the steel pipe (9); After grouting is completed, the fiber optic grating sensor (1) transmits the strain data of the steel pipe (9) of the pipe shed to the fiber optic grating monitor (13) for analysis. Based on the analysis results, precise, quantitative, and low-pressure compensation grouting is performed on specific areas. It also includes: joint (3), grouting independent closed groove (4), grouting hole (5); The grouting independent sealing groove (4) is welded to the inner surface of the head of each pipe roof steel pipe (9). The sealed space is separated from the inner cavity space of the pipe roof steel pipe (9). The joint (3) is installed below the grouting independent sealing groove (4), and the grouting hole (5) is set on the surface of the pipe roof steel pipe (9).

2. The apparatus according to claim 1, characterized in that, Also includes: Grouting hose (2), zoned grouting tube bundle (6), clamp (7), zoned independent grouting valve (11); A partitioned grouting pipe bundle (6) is installed in the hollow part of the pipe roof steel pipe (9) and fixed in position by clamps (7). The head of the partitioned grouting pipe bundle (6) is located at the head of the pipe roof steel pipe (9). A joint is installed at the head of the partitioned grouting pipe bundle (6) and connected to the joint (3) on the grouting independent closed groove (4) through the grouting hose (2). The independent grouting valve (11) is installed at the tail of the steel pipe (9) of the pipe shed, and the independent grouting valve (11) is connected to the grouting pipe bundle (6).

3. The apparatus according to claim 2, characterized in that, Also includes: Three-way (12); In the middle section of the steel pipe (9) of the pipe shed, a tee (12) is installed near the joint area of ​​the independent grouting trough. It is connected to the joint through the grouting hose. Each grouting pipe bundle in the zone is connected to only one independent grouting trough through the joint or tee and the grouting hose. When the number of pipe sections (9) of the pipe shed is greater than 8, each grouting pipe bundle in the partition is connected to the grouting independent closed groove of the two adjacent pipe sections (9) through a joint or tee and a grouting hose.

4. The apparatus according to claim 3, characterized in that, Also includes: The adjacent pipe sections of the pipe shed (9) are connected by the thread (8).

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