Prefabricated steel lattice for vertical shaft bottom sealing underwater compartment pouring

Abstract

The utility model discloses a prefabricated steel lattice for vertical shaft bottom sealing underwater separated warehouse pouring, the steel lattice is installed at the bottom in a vertical shaft, the steel lattice comprises core warehouse steel and corner warehouse steel, the core warehouse steel is of a #-shaped structure, right-angle-shaped locking corners are arranged at the four corners of the core warehouse steel, and the corner warehouse steel is connected with the core warehouse steel. The four pieces of corner bin steel are of a right-angle-shaped structure, and the right-angle parts of the four pieces of corner bin steel are installed on the four locking corners of the core bin steel correspondingly. The combined type steel lattice has the advantages that the combined type steel lattice is more beneficial to underwater assembly under limited conditions and can be prefabricated in advance due to the fact that vertical tunneling equipment is hung and the annular beam is arranged for enhancing rigidity of a blade foot area; the integrity of the concrete can be ensured by pouring the large-volume concrete at the bottom of the vertical shaft in different bins underwater; and the density of the bottom sealing concrete can be guaranteed through bin division pouring, holes generated by underwater concrete pouring are eliminated, and water leakage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical shaft construction, in particular to a prefabricated steel grid for casting underwater compartments in the bottom sealing of a vertical shaft. Background Art

[0002] At present, there is a great demand for vertical shaft construction. In the existing technology, vertical shaft construction methods are divided into manual excavation construction, semi-mechanical excavation construction and mechanical excavation construction. However, manual excavation construction and semi-mechanical excavation construction have a long period of time, and workers are required to work underground. It is difficult to ensure the personal safety of workers during the construction process. In mechanical excavation, drilling rigs or vertical shaft boring machines are usually used for excavation: for strata with good ground stability, dry construction is usually used, and underground bottom sealing is relatively simple; for strata with poor ground stability, submersible vertical shaft boring machines are usually used for construction. During the construction process, the submersible vertical shaft boring machine needs to dive underwater as a whole for construction, and bottom sealing work needs to be carried out underwater at the same time.

[0003] For existing underground bottom sealing technology, the bottom is usually sealed by directly pouring concrete. However, this method of bottom sealing easily leads to reduced density of the bottom sealing concrete blocks and poor anti-floating and anti-shear capabilities. In the face of unfavorable geological conditions, the bottom sealing concrete can be reinforced by lowering a steel cage structure to ensure the stability and reliability of the bottom sealing structure. However, the method of using a steel cage structure for bottom sealing has the defects of heavy weight, easy deformation and difficulty in positioning of the steel cage structure during overall hoisting. Moreover, due to the presence of annular beams for suspending vertical tunneling equipment and enhancing the stiffness of the blade foot area, the steel cage structure is large in size, making it difficult to hoist and place the bottom. At the same time, since the steel bars in the steel cage structure are arranged relatively closely, the spacing between the steel bars is small, resulting in problems such as difficulty in underwater vibration, reduced concrete density and difficulty in ensuring the quality of the bottom sealing.

[0004] To sum up, there is an urgent need for a prefabricated steel grid for underwater compartment casting of the shaft bottom seal, which can improve the density and integrity of the bottom seal concrete, prevent water leakage from the bottom seal, and enhance the strength and anti-floating and shear resistance of the shaft bottom to solve the problems existing in the existing technology. Summary of the Invention

[0005] The purpose of this utility model is to provide a prefabricated steel grid for underwater compartment casting of shaft bottom sealing in accordance with the deficiencies of the above-mentioned prior art. The steel grid is composed of core compartment steel and corner compartment steel. The core compartment steel is a well-shaped structure. The four corners of the core compartment steel are provided with right-angled locking angles. The corner compartment steel is a right-angled structure and is provided with four. The right-angled parts of the four corner compartment steels are respectively installed on the four locking angles of the core compartment steel, and the compartment casting is carried out through the steel grid. Underwater compartment casting of large-volume concrete for shaft bottom sealing can ensure the integrity of the concrete. The compartment casting can also ensure the density of the bottom sealing concrete, eliminate the holes caused by underwater concrete casting, and prevent water leakage.

[0006] The utility model discloses a vertical shaft bottom sealing underwater compartment pouring prefabricated steel grid, the steel grid is installed at the bottom in the vertical shaft, the steel grid includes core compartment steel and angle compartment steel, the core compartment steel is the well letter shape structure, and the four corners position of core compartment steel is equipped with the right angle lock angle, and the angle compartment steel is right angle shape structure and is equipped with four, and the right angle portion of four angle compartment steel is installed on four lock angle of core compartment steel respectively.

[0007] The core compartment steel includes core compartment edge board and lock angle limb board, the core compartment edge board is equipped with four and is enclosed into the mouth letter shape structure, and both ends of each core compartment edge board are equipped with a lock angle limb board, and two lock angle limb boards at each corner position of mouth letter shape structure form the lock angle.

[0008] The angle compartment steel is composed of two mutually perpendicular angle compartment limb boards.

[0009] The height of core compartment steel is greater than the height of angle compartment steel, and the top surface of core compartment steel is flat with the top surface of angle compartment steel, and the bottom surface of core compartment steel is below the bottom surface of angle compartment steel.

[0010] The two ends of angle compartment steel abut against the inner wall of vertical shaft.

[0011] The middle part of core compartment steel forms core compartment, and angle compartment is formed between angle compartment steel and the inner wall of vertical shaft, and edge compartment is formed between angle compartment steel, core compartment steel and the inner wall of vertical shaft.

[0012] The utility model discloses a vertical shaft bottom sealing underwater compartment pouring prefabricated steel grid, the steel grid is installed at the bottom in the vertical shaft, the steel grid includes core compartment steel and angle compartment steel, the core compartment steel is the well letter shape structure, and the four corners position of core compartment steel is equipped with the right angle lock angle, and the angle compartment steel is right angle shape structure and is equipped with four, and the right angle portion of four angle compartment steel is installed on four lock angle of core compartment steel respectively.

[0013] The utility model discloses a vertical shaft bottom sealing underwater compartment pouring prefabricated steel grid, the steel grid is installed at the bottom in the vertical shaft, the steel grid includes core compartment steel and angle compartment steel, the core compartment steel is the well letter shape structure, and the four corners position of core compartment steel is equipped with the right angle lock angle, and the angle compartment steel is right angle shape structure and is equipped with four, and the right angle portion of four angle compartment steel is installed on four lock angle of core compartment steel respectively.

[0014] (1) due to the existence of the annular beam of vertical excavation equipment suspension and the rigidity setting of the blade foot area, the combined steel grid is more conducive to underwater assembly under the restricted condition, and can be prefabricated in advance.

[0015] (2) underwater compartment pouring vertical shaft bottom sealing mass concrete can guarantee the integrity of concrete.

[0016] (3) compartment pouring can also guarantee the compactness of bottom sealing concrete, eliminate the hole produced in underwater pouring, and prevent water seepage. DRAWINGS

[0017] Figure 1 It is the structure schematic drawing of the steel grid of the utility model;

[0018] Figure 2 It is the installation schematic drawing of the steel grid of the utility model in the vertical shaft;

[0019] Figure 3 It isFigure 2 Middle AA section;

[0020] Figure 4 for Figure 2 Middle BB cross-section;

[0021] Figure 5 This is a schematic diagram of the bottom sealing of the vertical shaft after the compartment casting of the utility model;

[0022] Figure 6 for Figure 5 mid-CC cross-section;

[0023] Figure 7 for Figure 5 Middle DD section;

[0024] like Figures 1-7 As shown, the marks in the figure represent:

[0025] 1. Steel grid, 2. Vertical shaft, 3. Water-rich formation, 4. Formation water;

[0026] 11. Core silo steel, 12. Corner silo steel;

[0027] 111. Core warehouse side plate, 112. Angle lock, 113. Angle lock limb plate, 114. Core warehouse;

[0028] 121. Corner warehouse limb board, 122. Corner warehouse, 123. Side warehouse;

[0029] 21. Inner wall of shaft, 22. Bottom ring beam, 23. Bottom cover;

[0030] 231. Core silo concrete, 232. Corner silo concrete, 233. Side silo concrete, 234. Bottom and top surface concrete. DETAILED DESCRIPTION

[0031] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:

[0032] Example: Figures 1-7As shown, the embodiment relates to a prefabricated steel grid for shaft sealing bottom water under warehouse pouring, the steel grid 1 is installed at the bottom of the shaft 2, used for the warehouse pouring of the sealing bottom 23 of the shaft 2, wherein the shaft 2 is arranged in the water-rich stratum 3, and the stratum water 4 is arranged in the shaft 2, the steel grid 1 mainly comprises core warehouse steel 11 and corner warehouse steel 12, the height of the core warehouse steel 11 is greater than the height of the corner warehouse steel 12, and the top surface of the core warehouse steel 11 is flush with the top surface of the corner warehouse steel 12, and the bottom surface of the core warehouse steel 11 is below the bottom surface of the corner warehouse steel 12. The core warehouse steel 11 is a cross-shaped structure, and a right-angled locking corner 112 is arranged at each corner position of the core warehouse steel 11, and the corner warehouse steel 12 is a right-angled structure and is provided with four, and the right-angled parts of the four corner warehouse steels 12 are respectively arranged on the four locking corners 112 of the core warehouse steel 11, and the two ends of the corner warehouse steel 12 are in abutment with the inner wall 21 of the shaft.

[0033] As shown, Figures 1-7 The core warehouse steel 11 comprises core warehouse edge plates 111 and locking corner limb plates 113, the core warehouse edge plates 111 are provided with four and are enclosed into a mouth-shaped structure, and each core warehouse edge plate 111 is provided with a locking corner limb plate 113 at each end, and the two locking corner limb plates 113 at each corner position of the mouth-shaped structure form a locking corner 112. The corner warehouse steel 12 is composed of two mutually perpendicular corner warehouse limb plates 121. The middle part (mouth-shaped structure) of the core warehouse steel 11 forms a core warehouse 114, the core warehouse 114 is used for pouring core warehouse concrete 231, the corner warehouse steel 12 and the inner wall 21 of the shaft form a corner warehouse 122, the corner warehouse 122 is used for pouring corner warehouse concrete 232, and the corner warehouse steel 12, the core warehouse steel 11 and the inner wall 21 of the shaft form an edge warehouse 123, the edge warehouse 123 is used for pouring edge warehouse concrete 233. In addition, the top surface of the sealing bottom 23 is poured with sealing bottom top surface concrete 234, the sealing bottom top surface concrete 234 is provided with a bottom ring beam 22 above the steel grid 1, the bottom ring beam 22 comprises a circular ring and a support rod, the outer diameter of the circular ring is equal to the inner diameter of the shaft 2, the support rod is provided with two and the two support rods are cross-shaped and arranged in X shape, and the two ends of the support rod are connected with the inner wall of the circular ring.

[0034] As shown, Figures 1-7 The embodiment also has the following construction method:

[0035] 1. Hoist the core warehouse steel 11 to the middle position of the bottom of the shaft 2, hoist the corner warehouse steel 12 to the edge position of the bottom of the shaft 2, and insert the corner warehouse steel 12 into the locking corner 112 of the core warehouse steel 11 to form the steel grid 1.

[0036] 2. Pour concrete in the core warehouse 114 to the top surface of the steel grid 1 to form the core warehouse concrete 231, and then pour concrete in the corner warehouse 122 and the edge warehouse 123 to the top surface of the steel grid 1 to form the corner warehouse concrete 232 and the edge warehouse concrete 233 respectively.

[0037] 3. Lift the bottom ring beam 22 to the top of the steel grid 1, pour concrete (bottom cover top surface concrete 234) to the designed height of the bottom cover top surface, and complete the pouring of the bottom cover 23.

[0038] The beneficial technical effects of this embodiment are:

[0039] (1) Due to the presence of annular beams for suspending vertical tunneling equipment and enhancing the stiffness of the blade foot area, the modular steel grid is more conducive to underwater assembly under restricted conditions and can be prefabricated in advance;

[0040] (2) Underwater sub-chamber pouring of large-volume concrete for the bottom of the shaft can ensure the integrity of the concrete;

[0041] (3) Separate compartment pouring can also ensure the density of the bottom concrete, eliminate the holes caused by underwater concrete pouring, and prevent water leakage.

[0042] Although the above embodiments have described the concepts and embodiments of the present invention in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, so they are not described here one by one.

Claims

1. A prefabricated steel grid for underwater sub-compartment casting of a vertical shaft bottom, characterized by: The steel grating is installed at the bottom of the vertical shaft. The steel grating includes core warehouse steel and corner warehouse steel. The core warehouse steel is a criss-cross structure. Right-angled locking corners are provided at the four corners of the core warehouse steel. The corner warehouse steel is a right-angled structure and is provided with four. The right-angled parts of the four corner warehouse steels are respectively installed on the four locking corners of the core warehouse steel.

2. The prefabricated steel grid for underwater sub-compartment casting of a vertical shaft bottom seal according to claim 1, characterized in that: The core bin steel includes a core bin side plate and a corner locking limb plate. The core bin side plates are provided with four and enclose a U-shaped structure. Each of the two ends of the core bin side plates is provided with a corner locking limb plate. The two corner locking limb plates at each corner position of the U-shaped structure form the locking angle.

3. The prefabricated steel grid for underwater sub-compartment casting of a vertical shaft bottom seal according to claim 1, characterized in that: The corner warehouse steel consists of two mutually perpendicular corner warehouse limb plates.

4. The prefabricated steel grid for underwater sub-compartment casting of a vertical shaft bottom seal according to claim 1, characterized in that: The height of the core warehouse steel is greater than that of the corner warehouse steel, and the top surface of the core warehouse steel is flush with the top surface of the corner warehouse steel, and the bottom surface of the core warehouse steel is located below the bottom surface of the corner warehouse steel.

5. The prefabricated steel grid for underwater sub-compartment casting of a vertical shaft bottom seal according to claim 1, characterized in that: Both ends of the corner warehouse steel are in contact with the inner wall of the vertical shaft.

6. The prefabricated steel grid for underwater sub-compartment casting of a vertical shaft bottom seal according to claim 5, characterized in that: The middle part of the core bin steel forms a core bin, the corner bin steel and the inner wall of the shaft form a corner bin, and the corner bin steel, the core bin steel and the inner wall of the shaft form a side bin.

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