Safety protection device for ultra-deep large-diameter round well operation layer construction

Abstract

The utility model discloses a safety protection device for construction of an operation layer of an ultra-deep large-diameter round well, which comprises a safety flat net positioned on the inner wall of a lining wall of a working well, a side rope is tied on the peripheral surface of the safety flat net, and vertical steel bars surrounding the safety flat net are uniformly distributed on a heightening structure of the lining wall of the working well. Tying ropes are connected between the side ropes and the vertical steel bars; anchoring parts in central symmetry are evenly distributed on the working well lining wall, steel wire ropes tensioned on the bottom face of the safety flat net are fixedly connected between every two sets of symmetrical anchoring parts, supports are symmetrically arranged on a coping beam on the top of the working well lining wall and jointly support a prefabricated T-beam, a vertical support is fixedly arranged on the top face of the beam end of the prefabricated T-beam, and a steel wire rope is arranged on the top face of the vertical support. The heightening structure and the support are jointly connected with a safety mother rope in series. The utility model aims to provide a protection device which is convenient to temporarily arrange in the construction process of an operation layer, and ensures the construction safety of erection of a prefabricated T beam, installation of a non-dismantling template, cast-in-place floor operation and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy project construction, in particular to a safety protection device for the construction of an operating layer of an ultra-deep large-diameter circular well. Background Art

[0002] With the development of my country's economy, more and more water conservancy projects have been built in recent years. In particular, in the process of constructing water diversion tunnels that are related to the people's livelihood, many ultra-deep and large-diameter circular working wells need to be built. In order to meet the needs of the operation period after water is passed, this kind of working well usually has an operating layer structure for later equipment placement, daily maintenance, vehicle inspection, etc. In order to speed up the construction progress, the construction of the working well operating layer adopts prefabricated T-beam + UHPC non-removal formwork + cast-in-place floor structure. This kind of working well operating layer has the characteristics of ultra-deep, large span, and unconventional special-shaped structure, and the construction precision requirements are high and the construction period is long. If only conventional safety protection measures are taken, there will be safety hazards such as personnel falling from heights and objects hitting the working surface during construction. Therefore, there is an urgent need for a protective device that is easy to temporarily deploy during the construction of the operating layer to ensure the safety of prefabricated T-beam erection, non-removal formwork installation, and cast-in-place floor operations. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art and to provide a protective device that is easy to temporarily deploy during the construction of the operating layer to ensure the safety of construction such as the erection of prefabricated T-beams, the installation of non-disassembly formwork, and the cast-in-place floor operations.

[0004] In order to achieve the above object, the utility model is implemented through the following technical solutions:

[0005] A safety protection device for the construction of an operating layer of an ultra-deep large-diameter circular shaft comprises a safety net located on the inner wall of a working shaft lining wall, the outer peripheral surface of the safety net is fastened with side ropes, and a heightening structure of the working shaft lining wall is evenly provided with vertical steel bars surrounding the safety net, and tie ropes are connected between the side ropes and each vertical steel bar; the working shaft lining wall is evenly provided with centrally symmetrical anchors, and steel wire ropes stretched on the bottom surface of the safety net are fixedly connected between each group of symmetrical anchors; a capping beam on the top of the working shaft lining wall is symmetrically provided with supports, and the supports jointly support a prefabricated T-beam, and a vertical bracket is fixedly provided on the top surface of the beam end of the prefabricated T-beam, and a safety mother rope is jointly connected in series with the heightening structure and the bracket.

[0006] Furthermore, the prefabricated T-beam is provided with an embedded steel plate fixedly connected to the bottom surface of the bracket.

[0007] Furthermore, the anchoring member includes an anchoring steel plate and a lifting lug, the anchoring steel plate is fixed to the inner wall of the lining wall of the working pit by means of expansion bolts, and the lifting lug is fixed to the anchoring steel plate and is tied to the steel wire rope.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] The utility model is divided into two protections: a safety flat net at the bottom and a safety mother rope at the top. The safety flat net at the bottom is used to prevent people or objects from falling. The steel wire rope at the bottom of the safety flat net and the side rope at the edge play a role in supporting and tensioning the net surface, and finally form a stable and strong anti-falling net surface. The safety mother rope at the top of the bracket extends along the length direction of the prefabricated T-beam, forming a mother rope for the operator to hang the safety belt worn by himself, and it is convenient for the operator to walk along the beam direction on the operating layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 It is a top view of the safety flat net in the utility model;

[0012] Figure 3 It is a structural schematic diagram of the anchoring piece in the utility model.

[0013] Reference numerals:

[0014] 1-anchor, 2-steel wire rope, 3-safety flat net, 4-side rope, 5-tether, 6-vertical steel bar, 7-lining wall of working pit, 8-heightening structure, 9-embedded steel plate, 10-bracket, 11-safety mother rope, 12-prefabricated T-beam, 13-top beam, 14-support, 101-anchor steel plate, 102-lifting ear, 103-expansion bolt. DETAILED DESCRIPTION

[0015] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0016] like Figures 1 to 3 As shown, a safety protection device for the construction of an operating layer of an ultra-deep large-diameter circular shaft comprises a safety net 3 located on the inner wall of a working shaft lining wall 7, the outer peripheral surface of the safety net 3 is fastened with a side rope 4, and a heightening structure 8 of the working shaft lining wall 7 is evenly provided with vertical steel bars 6 surrounding the safety net 3, and a tether 5 is connected between the side rope 4 and each vertical steel bar 6; the working shaft lining wall 7 is evenly provided with centrally symmetrical anchors 1, and each group of symmetrical anchors 1 is fixedly connected with a steel wire rope 2 stretched on the bottom surface of the safety net 3, a top pressure beam 13 on the top of the working shaft lining wall 7 is symmetrically provided with supports 14, and the supports 14 jointly support a prefabricated T-beam 12, and a vertical bracket 10 is fixedly provided on the top surface of the beam end of the prefabricated T-beam 12, and a safety mother rope 11 is jointly connected in series with the heightening structure 8 and the bracket 10.

[0017] Among them, the prefabricated T-beam 12 is provided with an embedded steel plate 9 fixedly connected to the bottom surface of the bracket 10, and the embedded steel plate 9 is used to firmly connect the bracket 10 with the prefabricated T-beam 12 so that the safety mother rope 11 can be stably tensioned.

[0018] The anchor 1 includes an anchor plate 101 and a lifting lug 102. The anchor plate 101 is fixed to the inner wall of the working pit lining wall 7 by an expansion bolt 103. The lifting lug 102 is fixed to the anchor plate 101 and is connected to the steel wire rope 2. The anchors 1 are distributed in the inner circle of the working pit lining wall 7. The lifting lugs 102 of each group of symmetrical anchors 1 are used to tension a steel wire rope 2, so that the steel wire rope 2 can form a main keel supported on the bottom surface of the safety flat net 3.

[0019] The prefabricated T-beam 12 is prefabricated in the prefabrication plant, and a pre-embedded steel plate 9 is embedded on both sides of the top of each prefabricated T-beam 12, and the top surface of the pre-embedded steel plate 9 is flush with the top surface of the prefabricated T-beam 12. After the prefabricated T-beam 12 is erected, the bracket 10 is welded to the embedded steel plate 9 at the end of the beam, so that the bracket 10 is vertically perpendicular to the top surface of the prefabricated T-beam 12. Connect the safety mother rope 11 to each bracket 10 along the prefabricated T-beam 12, and connect and fix the two ends of the safety mother rope 11 to the heightening structure 8. Finally, the operator will put the safety belt he wears on the safety mother rope 11, so that the operator can walk freely along the prefabricated T-beam 12 on the operating floor and work safely.

[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety protection device for the construction of an ultra-deep large-diameter circular well operating layer, comprising a safety flat net (3) located on the inner wall of the working well lining wall (7), characterized in that: The outer peripheral surface of the safety net (3) is fastened with side ropes (4); the heightening structure (8) of the inner lining wall (7) of the working pit is evenly provided with vertical steel bars (6) surrounding the safety net (3); and the side ropes (4) and each vertical steel bar (6) are connected with a tie rope (5); the inner lining wall (7) of the working pit is evenly provided with centrally symmetrical anchors (1); steel wire ropes (2) stretched on the bottom surface of the safety net (3) are fixedly connected between each group of symmetrical anchors (1); the top pressure beam (13) at the top of the inner lining wall (7) of the working pit is symmetrically provided with supports (14); the supports (14) jointly support a prefabricated T-beam (12); a vertical bracket (10) is fixedly provided on the top surface of the beam end of the prefabricated T-beam (12); and the heightening structure (8) and the bracket (10) are jointly connected in series with a safety mother rope (11).

2. The safety protection device for the construction of the operating layer of an ultra-deep large-diameter circular well according to claim 1 is characterized by: The prefabricated T-beam (12) is provided with an embedded steel plate (9) fixedly connected to the bottom surface of the bracket (10).

3. The safety protection device for the construction of the operating layer of an ultra-deep large-diameter circular well according to claim 1 is characterized by: The anchoring piece (1) comprises an anchoring steel plate (101) and a lifting lug (102); the anchoring steel plate (101) is fixed to the inner wall of the working pit lining wall (7) via an expansion bolt (103); the lifting lug (102) is fixed to the anchoring steel plate (101) and is connected to the steel wire rope (2).

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