Frameless supporting structure of underground chamber

Abstract

The utility model provides an underground chamber frameless supporting structure. The underground chamber frameless supporting structure comprises a supporting arch frame arranged in a chamber. Wherein the supporting arch frame is of a hollow structure, and the outer contour of the vertical section of the supporting arch frame is the same as the outer contour of the vertical section of a to-be-supported chamber in structure; in addition, a tension supporting piece is fixedly connected between the supporting arch frame and the side wall of the to-be-supported chamber. The frameless supporting structure for the underground chamber can solve the technical problems of large occupied space of supporting construction, long construction period, many potential safety hazards and many construction links in the traditional framework supporting process.

Description

Technical Field

[0001] This utility model relates to the field of mining technology, and more specifically, to a frameless support structure for underground chambers. Background Technology

[0002] In mining operations, to ensure the internal stability of underground chambers and prevent collapse, permanent concrete support structures need to be installed inside the chambers. Traditional permanent concrete support structures for underground chambers use a skeleton support process, which involves erecting and fixing a large amount of scaffolding at the bottom of the underground chamber to form a skeleton support structure, then fixing the corresponding concrete formwork based on the skeleton support structure, and finally pouring the corresponding permanent concrete.

[0003] The traditional frame support process described above requires the use of scaffolding components such as horizontal and diagonal braces, which has many disadvantages such as large space occupation, long construction period, many safety hazards, and many construction steps. Furthermore, when supporting large-span chambers, a large amount of frame support materials are required, which occupies a huge amount of space.

[0004] Based on the aforementioned technical issues, there is an urgent need for a concrete support structure that occupies little space, has a short construction period, and poses few safety hazards. Utility Model Content

[0005] In view of the above problems, the purpose of this utility model is to provide a frameless support structure for underground chambers. The frameless support structure for underground chambers provided by this utility model can solve the technical problems of traditional frame support technology, such as large space occupation, long construction period, many safety hazards and many construction steps.

[0006] The present invention provides a frameless support structure for underground chambers, including a support arch frame installed inside the chamber; wherein,

[0007] The supporting arch is a hollow structure, and the outer contour of its vertical section is identical to the outer contour of the vertical section of the chamber to be supported; furthermore,

[0008] A tension support is fixedly connected between the supporting arch and the side wall of the chamber to be supported.

[0009] Furthermore, a preferred configuration is that the tension support includes an anchor rod.

[0010] Furthermore, in a preferred configuration, multiple anchor rods are provided between the supporting arch and the sidewall of the chamber to be supported; and the anchor rods are evenly distributed within a vertical cross-section of the sidewall of the chamber to be supported.

[0011] Furthermore, in a preferred configuration, the anchor bolts are evenly spaced along the extension direction of the sidewall of the chamber to be supported.

[0012] Furthermore, in a preferred configuration, the supporting arch frame includes vertical supporting frames disposed on both sides and an arched supporting frame connected to the top of the two vertical supporting frames, wherein the arched supporting frame and the two vertical supporting frames together constitute a supporting arch frame with a portal-shaped vertical cross-section.

[0013] Furthermore, in a preferred configuration, an auxiliary support frame is connected between the upper parts of the two vertical support frames, and a diagonal brace is connected between the auxiliary support frame and the arched support frame.

[0014] Furthermore, in a preferred configuration, at least two diagonal braces are provided between the auxiliary support frame and the arched support frame; and the diagonal braces are connected end-to-end between the auxiliary support frame and the arched support frame.

[0015] Furthermore, in a preferred configuration, the diagonal braces connected end to end form a triangular support between the auxiliary support frame and the arched support frame.

[0016] Furthermore, in a preferred configuration, at least two diagonal braces are provided between the auxiliary support frame and the arched support frame; and the diagonal braces are distributed at equal intervals between the auxiliary support frame and the arched support frame.

[0017] Furthermore, a preferred structure is that a support template is provided on the inner side of the supporting arch frame.

[0018] Compared with the prior art, the above-mentioned frameless support structure for underground chambers according to this utility model has the following beneficial effects:

[0019] The frameless support structure for underground chambers provided by this utility model effectively reduces the space occupied by the support structure by setting a hollow support arch, allowing workers to operate under the frameless support structure. In addition, the frameless support structure for underground chambers provided by this utility model uses tension support members to connect the support arch to the sidewall of the chamber to be supported, which not only eliminates the need for bottom scaffolding erection and reduces the construction period, but also improves the support stability of the entire frameless support structure for underground chambers. Furthermore, due to the reduction of a large amount of scaffolding erection work, its safety is higher. Attached Figure Description

[0020] Other objects and results of this invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings and the contents of the claims, and with a more complete understanding of this invention.

[0021] In the attached diagram:

[0022] Figure 1 A front sectional view of the frameless support structure for the underground chamber provided by this utility model;

[0023] Attached reference numerals: 1. Anchor bolt; 2. Arch support frame; 3. Sidewall; 4. Vertical support frame; 5. Diagonal brace; 6. Auxiliary support frame.

[0024] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0025] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] Figure 1 The diagram shows a front cross-sectional view of the frameless support structure for underground chambers provided by this invention.

[0028] Depend on Figure 1As can be seen, the frameless support structure for underground chambers provided by this utility model includes a support arch frame installed inside the chamber along the extension direction of the chamber. The support arch frame is welded from steel structural components (such as steel pipes, steel plates, etc.). The entire support arch frame is a hollow structure, that is, the outer contour of the vertical section of the support arch frame is the same as the outer contour of the vertical section of the chamber to be supported, both being arch-shaped structures. The support arch frame includes an outermost support frame, and no scaffolding or other support components are installed inside. To improve the support stability of the entire support arch frame, a tension support member is fixedly connected between the support arch frame and the side wall 3 of the chamber to be supported. The tension support member directly connects the entire support arch frame to the side wall 3 of the chamber to be supported, thereby eliminating the need for scaffolding to be erected inside the support arch frame.

[0029] In a specific embodiment of this utility model, in order to ensure the connection stability between the supporting arch and the side wall 3 of the chamber to be supported, the tension support may include an anchor rod 1. By anchoring one end of the anchor rod 1 into the side wall 3 of the chamber to be supported and fixing the other end of the anchor rod 1 to the supporting arch, a stable connection between the supporting arch and the side wall 3 of the chamber to be supported is achieved.

[0030] Furthermore, to ensure a stable connection between the supporting arch and the sidewall 3 of the chamber to be supported at all locations, multiple (at least two) anchor rods 1 are installed between the supporting arch and the sidewall 3 of the chamber to be supported. In addition, the anchor rods 1 need to be evenly distributed in any vertical section of the sidewall 3 of the chamber to be supported (as long as there are anchor rods 1), and the anchor rods 1 also need to be evenly or uniformly distributed in the extension direction of the sidewall 3 of the chamber to be supported.

[0031] It should be noted that, under normal circumstances, the longitudinal section of the chamber to be supported is an arch-shaped structure, including two side walls and one top wall. In order to achieve the corresponding connection between the supporting arch frame and the side wall 3 of the chamber to be supported, the vertical section of the supporting arch frame also needs to be set as an arch structure. The supporting arch frame may include vertical supporting frames 4 set on both sides (corresponding to the side walls of the chamber to be supported) and arched supporting frames 2 connected to the top of the two vertical supporting frames 4 (corresponding to the top wall of the chamber to be supported). The arched supporting frames 2 and the two vertical supporting frames 4 together constitute a supporting arch frame with a portal-shaped structure (arch structure) in vertical section.

[0032] In a preferred embodiment of this utility model, in order to further improve the support stability of the supporting arch frame, an auxiliary support frame 6 (located below the arch support frame 2) can be connected between the upper parts of the two vertical support frames 4. A diagonal brace 5 is connected between the auxiliary support frame 6 and the arch support frame 2. The diagonal brace 5, in conjunction with the auxiliary support frame 6, further supports the supporting arch frame.

[0033] Furthermore, to enhance the support stability of the diagonal brace 5, multiple diagonal braces 5 (at least two) can be installed between the auxiliary support frame 6 and the arched support frame 2; and the diagonal braces 5 need to be connected end-to-end between the auxiliary support frame 6 and the arched support frame 2. It should be noted that the end-to-end connected diagonal braces 5 will form triangular support structures between the auxiliary support frame 6 and the arched support frame 2 (e.g., Figure 1 As shown in the figure, the triangular support structure can significantly improve the overall support stability.

[0034] Of course, the diagonal bracing 5 can also be set in other ways between the auxiliary support frame 6 and the arched support frame 2. For example, the diagonal bracing 5 can be distributed at equal intervals or evenly between the auxiliary support frame 6 and the arched support frame 2, as long as the corresponding support requirements can be met.

[0035] It should be noted that after the supporting arch frame provided by this utility model is erected, a corresponding support template needs to be set on the inner side of the supporting arch frame, and the subsequent permanent concrete pouring can be carried out based on the support template.

[0036] As can be seen from the above specific embodiments, the frameless support structure for underground chambers provided by this utility model has at least the following advantages:

[0037] 1. By setting up a support arch frame with an arch-shaped vertical cross-section, the space occupied during construction can be reduced, and a hollow structure can be formed at the bottom to facilitate the construction of other operations.

[0038] 2. By connecting the supporting arch frame to the sidewall of the chamber to be supported through anchor bolts, the overlapping and supporting work of the bottom scaffolding can be eliminated, improving construction safety, and ensuring the support stability of the entire supporting arch frame.

[0039] 3. By using diagonal braces in conjunction with auxiliary support frames, the support stability of the frameless support structure in the underground chamber can be further improved.

[0040] As referred above Figure 1 The frameless support structure for underground chambers according to this utility model is described by way of example. However, those skilled in the art should understand that various modifications can be made to the frameless support structure for underground chambers proposed in this utility model without departing from the scope of this utility model. Therefore, the scope of protection of this utility model should be determined by the contents of the appended claims.

Claims

1. A frameless support structure for an underground chamber, characterized in that, This includes the supporting arch frame installed inside the chamber; wherein, The supporting arch is a hollow structure, and the outer contour of its vertical section is identical to the outer contour of the vertical section of the chamber to be supported; furthermore, A tension support is fixedly connected between the supporting arch and the side wall of the chamber to be supported.

2. The frameless support structure for underground chambers as described in claim 1, characterized in that, The tension support includes an anchor rod.

3. The frameless support structure for underground chambers as described in claim 2, characterized in that, At least two anchor rods are provided between the supporting arch and the sidewall of the chamber to be supported; and the anchor rods are evenly distributed within a vertical section of the sidewall of the chamber to be supported.

4. The frameless support structure for underground chambers as described in claim 3, characterized in that, The anchor bolts are evenly distributed along the extension direction of the sidewall of the chamber to be supported.

5. The frameless support structure for underground chambers as described in claim 2, characterized in that, The supporting arch frame includes vertical supporting frames on both sides and an arched supporting frame connected to the top of the two vertical supporting frames. The arched supporting frame and the two vertical supporting frames together form a supporting arch frame with a portal-shaped vertical cross-section.

6. The frameless support structure for underground chambers as described in claim 5, characterized in that, An auxiliary support frame is connected between the upper parts of the two vertical support frames, and a diagonal brace is connected between the auxiliary support frame and the arched support frame.

7. The frameless support structure for underground chambers as described in claim 6, characterized in that, At least two diagonal braces are provided between the auxiliary support frame and the arched support frame; and... The diagonal brace is connected end-to-end between the auxiliary support frame and the arched support frame.

8. The frameless support structure for underground chambers as described in claim 7, characterized in that, The diagonal bracing rods connected end to end form a triangular support between the auxiliary support frame and the arched support frame.

9. The frameless support structure for underground chambers as described in claim 6, characterized in that, At least two diagonal braces are provided between the auxiliary support frame and the arched support frame; and the diagonal braces are distributed at equal intervals between the auxiliary support frame and the arched support frame.

10. The frameless support structure for underground chambers as described in any one of claims 1 to 9, characterized in that, A support template is provided on the inner side of the supporting arch frame.

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