Pre-supporting structure for vertical shaft

Abstract

The utility model discloses a pre-supporting structure for a vertical shaft, relates to the technical field of underground engineering supporting, and aims to solve the problems that the existing pre-supporting structure applied to a small-diameter vertical shaft is easy to deform due to stress in the transportation and supporting process, so that the sealing performance is poorer after a semicircle is assembled, and the supporting effect is poor. According to the technical scheme, the technical problems that water seepage is easily caused by poor sealing performance, and the supporting effect is affected are solved, the annular supporting module comprises a plurality of annular supporting modules stacked in a vertical shaft on a soil layer, each annular supporting module is formed by annularly arranging three supporting assemblies, and each supporting assembly comprises an arc-shaped supporting plate; two reinforcing seats are symmetrically arranged at the two ends of the inner arc face of the arc-shaped supporting plate, and counter bores are formed in the reinforcing seats. The mode that the triangular supports are annularly arranged is adopted, the structural strength is greatly improved, the degree of deformation caused by the influence of external force is reduced, and the sealing performance after assembly is greatly improved; and the problem of water seepage caused by sealing performance reduction is effectively avoided, and the supporting effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of underground engineering support, and more specifically to a pre-support structure for a vertical shaft. Background Art

[0002] A vertical shaft is a well-shaped pipe with vertical walls. It is actually a collapse funnel. It is square, long or irregularly circular in plan. The long strip is developed along a set of joints, while the square or circular is developed along two sets of joints. The wall of the shaft is steep and almost vertical. Sometimes you can see the surface of the underground river from the vertical shaft.

[0003] At present, during the excavation process of vertical shafts with smaller diameters, it is often necessary to support the inside of the shaft with pre-support structures to prevent the shaft wall from collapsing.

[0004] The pre-support structure used in the prior art for small-diameter shafts is mainly composed of two semicircular guard plates, which are assembled in pairs to support the shaft wall. However, due to the large arc span of the semicircular guard plates, they are prone to deformation under stress during transportation and support, resulting in poor sealing after the semicircular assembly. In the high-water-content soil section in the shaft, water seepage is prone to occur due to poor sealing. Excessive water infiltration will cause the soil to turn into mud and enter the shaft, affecting the support effect. In view of this, we propose a pre-support structure for shafts. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a pre-support structure for a shaft to solve the problem that the pre-support structure currently used for small-diameter shafts is prone to stress deformation during transportation and support, resulting in poor sealing after semi-circular assembly, and easily causing water seepage due to poor sealing, thus affecting the technical problem of the support effect.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a pre-support structure for a vertical shaft, comprising a plurality of annular support modules stacked and arranged in the vertical shaft on the soil layer;

[0007] The annular support module is composed of three support components arranged in an annular manner, wherein the support components include an arc-shaped support plate, and two reinforcement seats are symmetrically constructed at both ends of the inner arc surface of the arc-shaped support plate, and a countersunk hole is opened in the reinforcement seat, and a locking member A is arranged in two opposite countersunk holes, and the inner arc surface of the arc-shaped support plate is constructed with an internal support structure;

[0008] The top and bottom ends of the inner arc surface of the arc-shaped supporting plate are both constructed with arc-shaped plates, and the top end of the arc-shaped plate is provided with a plurality of through holes at equal intervals, and locking members B are arranged in two opposite through holes.

[0009] The utility model forms support for the inner wall of the shaft by stacking a plurality of annular support modules in a vertical shaft on a soil layer. During the support process, the annular support module formed by three support assemblies is supported in the shaft. Since the arc-shaped support plate is structurally reinforced by the inner support structure arranged in the arc-shaped support plate and two reinforcing seats symmetrically arranged at both ends of the arc-shaped support plate, and an annular arrangement is adopted, the three arc-shaped support plates cooperate with a plurality of reinforcing seats to form a triangular support acting on the inner wall of the shaft, which greatly improves the strength of the structure, reduces the degree of deformation due to external force, greatly improves the sealing after assembly, effectively avoids the problem of water seepage due to reduced sealing, and greatly improves the support effect.

[0010] Preferably, a plurality of T-shaped positioning keys are equidistantly formed at one end of the arc-shaped supporting plate, and a plurality of T-shaped positioning slots are equidistantly formed at the other end of the arc-shaped supporting plate for corresponding insertion of the T-shaped positioning keys.

[0011] Preferably, the bottom end of the arc-shaped supporting plate is configured with an arc-shaped sealing key, and the top end of the arc-shaped supporting plate is provided with an arc-shaped sealing groove for inserting the corresponding arc-shaped sealing key.

[0012] Preferably, a limit key connected to the arc-shaped sealing key is centrally constructed at the bottom of the outer arc surface of the arc-shaped support plate, and a limit groove for inserting the corresponding limit key is centrally opened at the top of the outer arc surface of the arc-shaped support plate, and the limit groove is connected to the arc-shaped sealing groove.

[0013] Preferably, the inner support structure includes two vertical support ribs and three transverse support ribs, the vertical support ribs are symmetrically constructed on both sides of the inner curved surface of the arc-shaped support plate, and the three transverse support ribs are equidistantly constructed from top to bottom on the inner curved surface of the arc-shaped support plate.

[0014] Preferably, the two vertical support ribs and the three transverse support ribs are arranged alternately, and two ends of the two vertical support ribs are respectively fixedly connected to the corresponding arc-shaped plates.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model forms support for the inner wall of the shaft by stacking a plurality of annular support modules in a vertical shaft on a soil layer. During the support process, the annular support module formed by three support assemblies is supported in the shaft. Since the arc-shaped support plate is structurally reinforced by the inner support structure arranged in the arc-shaped support plate and two reinforcing seats symmetrically arranged at both ends of the arc-shaped support plate, and an annular arrangement is adopted, the three arc-shaped support plates cooperate with a plurality of reinforcing seats to form a triangular support acting on the inner wall of the shaft, which greatly improves the strength of the structure, reduces the degree of deformation due to external forces, greatly improves the sealing after assembly, effectively avoids the problem of water seepage due to reduced sealing, and greatly improves the support effect.

[0017] 2. The utility model arranges three arc-shaped support plates in a ring shape, and fixes the corresponding locking piece A in two adjacent reinforcing seats, and at the same time, inserts a plurality of T-shaped positioning keys provided at one end of the arc-shaped support plate into a plurality of T-shaped positioning grooves on another arc-shaped support plate to form an annular support module, and moves the plurality of annular support modules to the vertical shaft for stacking arrangement, inserts the arc-shaped sealing key on the upper arc-shaped support plate into the arc-shaped sealing groove on the other arc-shaped support plate, and inserts the limit key into the limit groove to form a stacking positioning, and passes the locking piece B through the two adjacent arc-shaped plates for fixing, thereby completing the support of the vertical shaft, and by inserting a plurality of arc-shaped sealing keys into a plurality of arc-shaped sealing grooves respectively, and combining a plurality of T-shaped positioning keys into the corresponding T-shaped positioning grooves, the sealing of the support structure after assembly can be improved, and the problem of water seepage due to reduced sealing can be further avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure in which a plurality of annular support modules are stacked and arranged in a soil layer shaft in the utility model;

[0019] Figure 2 It is a structural schematic diagram of the annular support module in the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the support assembly in the utility model in a front view state;

[0021] Figure 4 It is a schematic diagram of the structure of the support assembly in the utility model in a rear view state.

[0022] Description of the numbers in the figure:

[0023] 1. Soil layer; 2. Support assembly; 201. Arc support plate; 202. Reinforcement seat; 203. Locking piece A; 204. T-shaped positioning key; 205. T-shaped positioning groove; 206. Arc plate; 207. Locking piece B; 208. Arc sealing key; 209. Arc sealing groove; 210. Limit key; 211. Limit groove; 212. Vertical support rib; 213. Horizontal support rib. DETAILED DESCRIPTION

[0024] like Figures 1 to 4 As shown, the utility model relates to a pre-support structure for a vertical shaft, comprising a plurality of annular support modules stacked in a vertical shaft on a soil layer 1;

[0025] In the embodiment of the present utility model, in order to avoid the problem of water seepage due to decreased sealing, the annular support module is composed of three support components 2 arranged in an annular manner, and the support component 2 includes an arc-shaped support plate 201, and two reinforcing seats 202 are symmetrically constructed at both ends of the inner arc surface of the arc-shaped support plate 201, and countersunk holes are opened in the reinforcing seats 202, and locking members A203 are arranged in two opposite countersunk holes. The inner arc surface of the arc-shaped support plate 201 is constructed with an internal support structure, and the top and bottom ends of the inner arc surface of the arc-shaped support plate 201 are constructed with arc plates 206, and the top of the arc plate 206 is equidistantly opened with a plurality of through holes, and locking members B207 are arranged in two opposite through holes. In the vertical shaft on the soil layer 1, support is formed for the inner wall of the vertical shaft. During the support process, an annular support module formed by three support components 2 is used for support in the vertical shaft. Since the arc support plate 201 is structurally reinforced by the internal support structure arranged in the arc support plate 201 and the two reinforcing seats 202 symmetrically arranged at both ends of the arc support plate 201, and an annular arrangement is adopted, the three arc support plates 201 cooperate with a number of reinforcing seats 202 to form a triangular support acting on the inner wall of the vertical shaft, which greatly improves the strength of the structure, reduces the degree of deformation caused by external force, greatly improves the sealing after assembly, effectively avoids the problem of water seepage due to reduced sealing, and greatly improves the support effect.

[0026] In the embodiment of the utility model, in order to further avoid the problem of water seepage due to decreased sealing, a plurality of T-shaped positioning keys 204 are equidistantly configured at one end of the arc-shaped support plate 201, and a plurality of T-shaped positioning grooves 205 for inserting the corresponding T-shaped positioning keys 204 are equidistantly opened at the other end of the arc-shaped support plate 201, an arc-shaped sealing key 208 is configured at the bottom end of the arc-shaped support plate 201, and an arc-shaped sealing groove 209 for inserting the corresponding arc-shaped sealing key 208 is opened at the top end of the arc-shaped support plate 201, and a connection is configured at the bottom of the outer arc surface of the arc-shaped support plate 201. The arc-shaped sealing key 208 has a limit key 210, and a limit groove 211 for inserting the corresponding limit key 210 is provided in the center of the top of the outer arc surface of the arc-shaped support plate 201, and the limit groove 211 is connected to the arc-shaped sealing groove 209. The inner support structure includes two vertical support ribs 212 and three transverse support ribs 213. The vertical support ribs 212 are symmetrically constructed on both sides of the inner arc surface of the arc-shaped support plate 201, and the three transverse support ribs 213 are equidistantly constructed from top to bottom on the inner arc surface of the arc-shaped support plate 201. The two vertical support ribs 212 and the three transverse support ribs 213 are cross-connected. The two ends of the two vertical support ribs 212 are respectively fixedly connected to the corresponding arc plates 206, and the three arc support plates 201 are arranged in an annular shape, and the corresponding locking members A203 are fixedly arranged in two adjacent reinforcing seats 202, and at the same time, a plurality of T-shaped positioning keys 204 arranged at one end of the arc support plate 201 are inserted into a plurality of T-shaped positioning grooves 205 on another arc support plate 201 to form an annular support module, and the plurality of annular support modules are moved to the shaft for stacking, and the arc sealing member on the upper arc support plate 201 is The key 208 is inserted into the arc-shaped sealing groove 209 on another arc-shaped supporting plate 201, and the limit key 210 is inserted into the limit groove 211 to form a stacking positioning, and the locking piece B207 is passed through the two adjacent arc-shaped plates 206 for fixing, so as to complete the support of the vertical shaft. By inserting several arc-shaped sealing keys 208 into several arc-shaped sealing grooves 209 respectively, and combining several T-shaped positioning keys 204 into corresponding T-shaped positioning grooves 205, the sealing of the supporting structure after assembly can be improved, and the problem of water seepage due to reduced sealing can be further avoided.

[0027] Working principle: This embodiment provides a pre-support structure for a vertical shaft. When in use, three arc-shaped support plates 201 are arranged in a ring shape, and a plurality of locking members A203 are respectively arranged in the corresponding two reinforcement seats 202, and a plurality of T-shaped positioning keys 204 arranged at one end of the arc-shaped support plate 201 are inserted into a plurality of T-shaped positioning grooves 205 on adjacent arc-shaped support plates 201, thereby completing the fixed connection of the three support components 2 to form an annular support module, and the annular support module is moved into the vertical shaft, so that a plurality of arc-shaped sealing keys 208 located above are inserted into a plurality of arc-shaped sealing grooves 209 located below, and the limit key 210 is inserted into the limit groove 211 to form a stacked positioning, and then a plurality of locking members B207 are arranged in two adjacent arc-shaped plates 206 to complete the support of the vertical shaft.

[0028] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A pre-support structure for a vertical shaft, characterized in that: It comprises a plurality of annular support modules stacked in a vertical shaft on a soil layer (1); The annular support module is composed of three support components (2) arranged in an annular manner, wherein the support component (2) comprises an arc-shaped support plate (201), two reinforcement seats (202) are symmetrically constructed at both ends of the inner arc surface of the arc-shaped support plate (201), and a countersunk hole is opened in the reinforcement seat (202), and a locking member A (203) is arranged in two opposite countersunk holes, and the inner arc surface of the arc-shaped support plate (201) is constructed with an internal support structure; The top and bottom ends of the inner arc surface of the arc-shaped support plate (201) are both constructed with an arc-shaped plate (206), and the top end of the arc-shaped plate (206) is provided with a plurality of through holes at equal intervals, and locking members B (207) are arranged in two opposite through holes.

2. A pre-support structure for a shaft according to claim 1, characterized in that: One end of the arc-shaped support plate (201) is provided with a plurality of T-shaped positioning keys (204) at equal intervals, and the other end of the arc-shaped support plate (201) is provided with a plurality of T-shaped positioning slots (205) for corresponding insertion of the T-shaped positioning keys (204) at equal intervals.

3. A pre-support structure for a vertical shaft according to claim 2, characterized in that: The bottom end of the arc-shaped support plate (201) is provided with an arc-shaped sealing key (208), and the top end of the arc-shaped support plate (201) is provided with an arc-shaped sealing groove (209) for the corresponding arc-shaped sealing key (208) to be inserted.

4. A pre-support structure for a vertical shaft according to claim 3, characterized in that: A limit key (210) connected to the arc-shaped sealing key (208) is centrally constructed at the bottom of the outer arc surface of the arc-shaped supporting plate (201), and a limit groove (211) for the corresponding limit key (210) to be inserted is centrally opened at the top of the outer arc surface of the arc-shaped supporting plate (201), and the limit groove (211) is connected to the arc-shaped sealing groove (209).

5. A pre-support structure for a vertical shaft according to claim 1, characterized in that: The inner support structure comprises two vertical support ribs (212) and three transverse support ribs (213); the vertical support ribs (212) are symmetrically constructed on both sides of the inner curved surface of the arc-shaped support plate (201); and the three transverse support ribs (213) are equidistantly constructed from top to bottom on the inner curved surface of the arc-shaped support plate (201).

6. A pre-support structure for a vertical shaft according to claim 5, characterized in that: The two vertical support ribs (212) and the three transverse support ribs (213) are arranged in a staggered manner, and the two ends of the two vertical support ribs (212) are respectively fixedly connected to the corresponding arc-shaped plates (206).

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