Steel bar planting body for reinforcing wellhead of power station

Abstract

The utility model discloses an embedded steel bar body for reinforcing a wellhead of a power station. And the supporting transverse sections can support the gluten to separate the horizontal plane of the rock stratum cracked by vibration, and the supporting transverse sections are fixed on the steel bars. The surface ribs are supported on the supporting transverse sections of the embedded steel bar bodies and located on the horizontal plane of the rock stratum subjected to vibration cracking at intervals, and the problem that no supporting point is used for supporting the surface ribs in the horizontal state in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a reinforcing bar body for reinforcing the wellhead of a power station and belongs to the technical field of power station shaft construction. BACKGROUND

[0002] When the construction environment of a power station shaft in which a turbine generator is installed is a rock structure, the rock layer at the wellhead of the power station shaft is first loosened by blasting and then excavated step by step downward by using engineering machinery. When excessive blasting causes the rock layer to be excessively loosened, the loosened rock layer at the wellhead of the power station shaft needs to be reinforced.

[0003] When reinforcing the wellhead, the rock layer subjected to vibration cracking needs to be connected to the post-cast reinforcing layer through the reinforcing bar body, and the reinforcing bar body needs to be fixed in the rock layer subjected to vibration cracking by grouting through the grouting pipe. However, the existing reinforcing bar body installation grouting pipe technology, as disclosed in Chinese Patent No. CN113756301B, although the grouting pipe can be installed together with the reinforcing bar body, there is no support point for the horizontal face wire that needs to be installed on the reinforcing bar body later. SUMMARY

[0004] To solve the above technical problems, the utility model provides a reinforcing bar body for reinforcing the wellhead of a power station.

[0005] The utility model is implemented by the following technical solutions.

[0006] The utility model provides a reinforcing bar body for reinforcing the wellhead of a power station, comprising:

[0007] Steel bars;

[0008] The face wire can be supported to space the support horizontal section on the horizontal plane of the rock layer subjected to vibration cracking, and the support horizontal section is fixed on the steel bars.

[0009] The support horizontal section and the steel bars are vertically distributed.

[0010] The steel bars are three steel bars that are in contact with each other and are fixed by welding.

[0011] The steel bars are in contact with each other and are fixed by welding, and the grouting pipe is fixed by welding, and the grouting hole for discharging grout is arranged on the grouting pipe.

[0012] The face wire is supported on the support horizontal section of the reinforcing bar body and is spaced on the horizontal plane of the rock layer subjected to vibration cracking, solving the problem of no support point for supporting the horizontal face wire in the prior art.

[0013] The face wire is hooked with the horizontal wire, and the horizontal wire is embedded and fixed in the vertical plane of the rock layer subjected to vibration cracking.

[0014] The utility model has the advantages that the face wire is supported on the support horizontal section of the reinforcing bar body and is spaced on the horizontal plane of the rock layer subjected to vibration cracking, solving the problem of no support point for supporting the horizontal face wire in the prior art. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the structure for reinforcing the vertical shaft of a power station according to this utility model;

[0016] Fig. 2 This is a schematic diagram of the structure of this utility model without a post-cast reinforcement layer;

[0017] Fig. 3 This is a schematic diagram of the structure of the rebar anchor body and the distribution of the ribs in this utility model;

[0018] Fig. 4 This is a schematic diagram of the structure of the rebar anchor, the rib, the vibration-cracked rock strata, and the original rock strata of this utility model;

[0019] In the diagram: 1-Power station shaft; 2-Vibration-cracked rock stratum; 3-Original rock stratum; 4-Horizontal reinforcement; 5-Face reinforcement; 6-Post-cast reinforcement layer; 8-Anchor cable; 10-Rebar installation; 11-Rebar; 12-Grouting pipe; 13-Grouting hole; 14-Supporting horizontal section. Detailed Implementation

[0020] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0021] like Figs. 1 to 4 As shown.

[0022] The present application discloses a construction method for reinforcing the shaft inlet of a pumped storage power station, comprising the following steps:

[0023] Cleaning. The excessively blasted and loosened rock layers at the entrance of the power station shaft 1 were cleaned using engineering machinery down to the vibration-cracked rock layer 2. Since the vibration-cracked rock layer 2 only developed cracks and failed to loosen and detach from the original rock layer 3, the engineering machinery such as excavators could not clean the vibration-cracked rock layer 2 from the original rock layer 3.

[0024] Embedding reinforcement. Horizontal reinforcement bars 4 are vertically embedded in the vibration-fractured rock stratum 2. Multiple horizontal reinforcement bars 4 are distributed at intervals. After drilling holes in the vibration-fractured rock stratum 2 and filling them with concrete, the horizontal reinforcement bars 4 are embedded and solidified. Reinforcing bar bodies 10 are lowered into the vibration-fractured rock stratum 2 through holes drilled in the horizontal plane of the vibration-fractured rock stratum 2. Multiple reinforcing bar bodies 10 are distributed at intervals. The reinforcing bars 11 of the reinforcing bar bodies and the grouting pipes 12 are lowered together into the vibration-fractured rock stratum 2. Concrete grout is injected into the grouting pipes 12, and the concrete grout is discharged from the grout discharge holes 13 of the grouting pipes 12. At this time, the concrete grout can fill and penetrate into the cracks in the vibration-fractured rock stratum 2. After the concrete grout solidifies, it fixes the reinforcing bar body in the vibration-fractured rock stratum 2. The horizontal support segments 14 on the reinforcing bar body are used as supports to tie out horizontal surface reinforcement bars 5. The ends of the horizontal reinforcement bars 4 are bent and hooked into the surface reinforcement bars 5.

[0025] Formwork erection and pouring. The post-poured reinforcement layer 6 is formed after the formwork is erected and the concrete is poured in the space of the power station shaft 1 far from the vibration-cracked rock layer 2, at this time, the gluten 5, the horizontal reinforcement 4 and the planted reinforcement body are all in the post-poured reinforcement layer 6.

[0026] Anchoring. The anchor cable 8 is installed on the post-poured reinforcement layer 6, the vibration-cracked rock layer 2 and the original rock layer 3 to pull and anchor, the anchor cable 8 takes the original rock layer 3 as the force point to pull the post-poured reinforcement layer 6 to extrude the vibration-cracked rock layer 2 for reinforcement, at this time, the shaft mouth reinforcement structure of the pumped storage power station is constructed; during the formwork erection and pouring, the pipeline is pre-buried in the space of the post-poured reinforcement layer 6 and the formwork, so that the internal anchoring channel of the post-poured reinforcement layer 6 can be formed after the formwork is removed, avoiding the need to drill holes on the post-poured reinforcement layer 6 again in the later period. When the anchor hole is drilled on the vibration-cracked rock layer 2 and the original rock layer 3 after the post-poured reinforcement layer 6 is formed, the vibration-cracked rock layer 2 does not crack again, ensuring the integrity of the vibration-cracked rock layer 2, and the concrete slurry during the pouring of the post-poured reinforcement layer 6 can be filled into the vibration-cracked rock layer 2 for reinforcement.

[0027] Since the vibration-cracked rock layer 2 is fixedly connected with the post-poured reinforcement layer 6 poured later through the multiple planted reinforcement bodies 10 and the multiple horizontal reinforcements 4 to form a whole, and the anchor cable 8 can effectively connect and reinforce the post-poured reinforcement layer 6, the vibration-cracked rock layer 2 and the original rock layer 3, the stability of the shaft mouth reinforcement of the pumped storage power station is ensured, and the problem that the reinforced concrete reinforcement layer formed by pouring on the inner diameter surface of the shaft mouth cannot effectively reinforce and connect the vibration-cracked rock layer and the original rock layer is solved.

[0028] The above-mentioned shaft mouth reinforcement structure of the pumped storage power station comprises:

[0029] The original rock layer 3 is integrated with the construction mountain, and the original rock layer 3 has the space of the power station shaft 1 in the middle;

[0030] The vibration-cracked rock layer 2 is on the inner diameter surface of the original rock layer 3, the horizontal reinforcement 4 is vertically embedded and fixed on the vibration-cracked rock layer 2, the horizontal reinforcement 4 is in a circular array and is spaced apart, the planted reinforcement body 10 is horizontally fixed on the horizontal reinforcement 4, and the planted reinforcement body 10 is in a circular array and is spaced apart;

[0031] The post-poured reinforcement layer 6 has the gluten 5 inside, the gluten 5, the horizontal reinforcement 4 and the planted reinforcement body 10 are wrapped by the post-poured reinforcement layer 6, and the post-poured reinforcement layer 6 is connected to the vibration-cracked rock layer 2 at multiple positions through the multiple horizontal reinforcements 4 and the multiple planted reinforcement bodies 10.

[0032] The post-poured reinforcement layer 6, the vibration-cracked rock layer 2 and the original rock layer 3 are penetrated by the anchor cable 8 for pull and anchoring.

[0033] The above-mentioned planted reinforcement body 10 for the shaft mouth reinforcement of the power station comprises:

[0034] The steel bars 11 are welded to each other, and the grouting pipe 12 is welded to the steel bars 11, and the grouting holes 13 for discharging grouting are arranged on the grouting pipe 12.

[0035] The support horizontal sections 14 are welded to the steel bars 11, and the face bars 5 are arranged on the support horizontal sections 14, and the horizontal face bars 5 are supported on the support horizontal sections 14 and are spaced on the horizontal plane of the fractured rock stratum 2.

[0036] The horizontal bars 4 are arranged on the face bars 5, and the horizontal bars 4 are embedded in the vertical plane of the fractured rock stratum 2.

[0037] When the face bars 5 are arranged, the face bars 5 are supported on the support horizontal sections 14 of the steel bar body 10 and are spaced on the horizontal plane of the fractured rock stratum 2, and the problem that the horizontal face bars are not supported in the prior art is solved.

Claims

1. A bolt for reinforcing a power station wellhead, characterized by comprising: Comprise: Steel bars (11); Supporting horizontal sections (14) on the level of the fractured rock stratum (2) under vibration are spaced by supporting the web (5), and the supporting horizontal sections (14) are fixed on the steel bars (11).

2. The plant shaft mouth reinforcing anchor according to claim 1, wherein: The supporting horizontal sections (14) are vertically distributed with the steel bars (11).

3. The plant shaft mouth reinforcing anchor according to claim 1, wherein: The steel bars (11) are three steel bars welded and fixed in contact with each other.

4. The plant shaft reinforcement anchoring body according to claim 1, characterized by: The steel bars (11) are welded and fixed in contact with the grouting pipes (12).

5. The plant shaft reinforcement anchoring body according to claim 1, characterized in that: The web (5) is tied on the supporting horizontal sections (14), and the horizontal web (5) is supported on the supporting horizontal sections (14), and the fractured rock stratum (2) under vibration is correspondingly spaced below the web (5).

6. The plant shaft reinforcement anchoring body according to claim 1, characterized in that: The web (5) is hooked with the horizontal web (4), and the horizontal web (4) is embedded and fixed in the vertical surface of the fractured rock stratum (2) under vibration.

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