Auxiliary structure for quaternary construction of neck well section
By combining the well shaft formwork, well shaft reinforcement and reinforcing beams, the problem of well shaft collapse and deformation during vertical shaft construction under complex geological conditions was solved, and the stability and safety of the well shaft were improved.
Patent Information
- Application Number
- CN202422987966.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-04
AI Technical Summary
In complex geological structures, especially in Quaternary soft soil, gravel, and water-bearing strata, shaft construction is prone to problems such as shaft collapse and deformation.
The well shaft adopts a combined structure of well shaft formwork, well shaft reinforcement, reinforcing beams and well frame foundation. The well shaft and anti-detachment cap are formed by concrete pouring, ensuring that the well shaft and anti-detachment cap are formed as one piece. The well shaft reinforcement and reinforcing beams are covered in the anti-detachment cap to enhance stability.
It effectively prevents well casing from sinking and falling off, improves the stability of the well casing, and ensures the safety and stability of vertical shaft construction.
Smart Images
Figure CN223562811U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the vertical shaft construction auxiliary tool technical field relates to a tool convenient for stable wellbore, specifically relates to a neck well section fourth system construction auxiliary structure. BACKGROUND
[0002] The vertical shaft as an important underground engineering structure plays an irreplaceable role in the field such as mineral resources exploitation. However, in the actual construction process, the vertical shaft often encounters various complex stratum conditions, such as Quaternary soft soil, expansive soil, fracture zone and other special strata, which puts forward higher requirements on construction technology and safety management.
[0003] For example, when the return air shaft and the south air intake shaft are constructed, the geological structure of the region is complex, the stratum distribution is uneven, there are multiple soft soil, sand, gushing water and other special strata, which brings great challenges to the vertical shaft construction, and the wellbore collapse and wellbore deformation are prone to occur.
[0004] Therefore, a neck well section fourth system construction auxiliary structure with simple structure, economy and practicality and capable of improving the stability of the wellbore is urgently needed. UTILITY MODEL CONTENTS
[0005] In view of the above problems, the utility model aims to provide a neck well section fourth system construction auxiliary structure to solve the problem that in the geological structure complex region with uneven stratum distribution and multiple soft soil, sand, gushing water and other special strata, the vertical shaft construction brings great challenges, and the wellbore collapse and wellbore deformation are prone to occur.
[0006] The utility model provides a neck well section fourth system construction auxiliary structure, which comprises a derrick foundation arranged on the side of a to-be-constructed vertical shaft and a wellhead widening section groove arranged close to the wellhead of the to-be-constructed vertical shaft.
[0007] A wellbore formwork is suspended in the to-be-constructed vertical shaft.
[0008] A wellbore reinforcement is arranged between the wellbore formwork and the inner wall of the to-be-constructed vertical shaft.
[0009] A reinforcing cross beam is arranged between the wellbore reinforcement and the derrick foundation.
[0010] A wellbore and a anti-dropping cap formed by pouring concrete are formed between the outer side of the wellbore formwork and the inner wall of the to-be-constructed vertical shaft and between the wellbore formwork and the wellhead widening section groove.
[0011] The wellbore and the anti-dropping cap are integrally formed, and the reinforcing cross beam and the wellbore reinforcement are covered in the anti-dropping cap.
[0012] Preferably, one end of the reinforcing cross beam is inserted in the shaft reinforcement, and the other end is erected on the ground beam of the derrick base.
[0013] Preferably, the derrick base is square.
[0014] Preferably, the number of reinforcing cross beams is eight.
[0015] Preferably, two reinforcing cross beams are erected on each side of the derrick base.
[0016] Preferably, the reinforcing cross beam fixed on the derrick base is perpendicular to the side of the derrick base.
[0017] Preferably, the reinforcing cross beam is I56b type H-beam.
[0018] Preferably, the length of the reinforcing cross beam is 3-4 meters beyond the outermost shaft.
[0019] Preferably, a reinforcement structure is arranged in the wellhead widened section groove, the reinforcing cross beam penetrates the reinforcement structure, and the reinforcement structure is cast to cover the anti-falling cap.
[0020] Preferably, the shaft formwork is suspended at the center position in the to-be-constructed shaft by a hoisting crane.
[0021] From the above technical solution, the neck well section fourth system construction auxiliary structure provided by the utility model comprises a derrick base arranged on the side of a to-be-constructed shaft, and a wellhead widened section groove arranged close to the wellhead of the to-be-constructed shaft; wherein, a shaft formwork is suspended in the to-be-constructed shaft, a shaft reinforcement is arranged between the shaft formwork and the inner wall of the to-be-constructed shaft, a reinforcing cross beam is arranged between the shaft reinforcement and the derrick base, a shaft formed by concrete casting and an anti-falling cap are formed between the outer side of the shaft formwork and the inner wall of the to-be-constructed shaft and between the shaft formwork and the wellhead widened section groove, wherein, the shaft and the anti-falling cap are integrally formed, and the reinforcing cross beam and the shaft reinforcement are cast to cover the anti-falling cap, so that the shaft and the anti-falling cap form an integral whole, the shaft sinking and the shaft falling phenomenon are prevented, and the construction effect of the shaft, especially the neck well section shaft passing through the fourth system stratum, is improved. BRIEF DESCRIPTION OF DRAWINGS
[0022] Other purposes and results of the utility model will be more apparent and easy to understand through the following description of the drawings and with the more comprehensive understanding of the utility model. In the drawings:
[0023] Figure 1 It is a side view of the neck well section fourth system construction auxiliary structure according to the utility model embodiment;
[0024] Figure 2This is a top view of the auxiliary construction structure for the Quaternary strata in the neck section according to an embodiment of the present utility model;
[0025] The attached diagram is labeled as follows: 1. Derrick foundation; 2. Widened section of wellhead; 3. Well shaft formwork; 4. Well shaft reinforcement; 5. Reinforcing beam; 6. Well shaft; 7. Anti-detachment cap; 8. Crane. Detailed Implementation
[0026] During the construction of the return air shaft and the south intake air shaft, the geological structure of the area was complex and the strata were unevenly distributed. There were many special strata such as soft soil, gravel, and water inrush, which brought great challenges to the construction of the shaft and made it easy for the shaft to collapse or deform.
[0027] To address the aforementioned problems, this utility model provides an auxiliary structure for the construction of the Quaternary system in the neck section. The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0028] To illustrate the auxiliary construction structure for the neck section of the Quaternary system provided by this utility model Figure 1 , Figure 2 The embodiments of this utility model are illustrated by way of example.
[0029] The following description of exemplary embodiments is merely illustrative and is in no way intended to limit the invention or its application or use. Techniques and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques and equipment should be considered part of the specification.
[0030] like Figure 1 , Figure 2 As shown in the diagram, this utility model provides a construction auxiliary structure for the fourth-order section of a shaft neck, including a derrick foundation 1 set around the perimeter of the shaft to be constructed, and a widened section 2 excavated close to the shaft opening. A shaft template 3 is suspended within the shaft; the suspension method of the template 3 is not limited. In this embodiment, the template is suspended at the center of the shaft by a crane for use during subsequent shaft pouring. Reinforcing bars 4 are provided between the template and the inner wall of the shaft. A reinforcing beam is provided between the reinforcing bars 4 and the derrick foundation 1. This extends the lateral support from the shaft itself to the widened section 2, and then via the reinforcing beam to the derrick foundation 1.
[0031] The specific manifestation of the reinforcing crossbeam is not limited, and can be equally divided based on the shaft template, or can be divided based on the edge of the shaft base. In the embodiment, one end of the reinforcing crossbeam 5 is inserted into the shaft reinforcement 4, and the other end is arranged on the beam of the shaft base 1. In the embodiment, the shaft base is square, and the shaft base is arranged inside the to-be-constructed shaft and the wellhead widened section ring. The number of reinforcing crossbeams is eight, two reinforcing crossbeams are arranged on each edge of the shaft base, the reinforcing crossbeam fixed on the shaft base is perpendicular to the edge of the shaft base, and the reinforcing crossbeams on the opposite two edges of the shaft base are symmetrical to each other, so as to increase the balance of reinforcement. The specific material and model of the reinforcing crossbeam are not limited, and in the embodiment, the reinforcing crossbeam is an I56b type I-shaped steel, so that the size of the to-be-constructed shaft can be matched, and the stability of subsequent pouring can be increased, and then the stability of the subsequently poured shaft is improved.
[0032] In the embodiment, the shaft 6 and the anti-falling cap 7 formed by pouring concrete are formed between the outside of the shaft template 3 and the inner wall of the to-be-constructed shaft, and between the shaft template 3 and the wellhead widened section groove 2.
[0033] The shaft 6 and the anti-falling cap are integrally formed, and the reinforcing crossbeam 5 and the shaft reinforcement 4 are covered in the anti-falling cap by pouring, so that the shaft and the anti-falling cap are integrated, the phenomenon of shaft sinking and shaft falling is prevented, and the stability is enhanced. In order to further enhance the stability, a reinforcement structure is arranged in the wellhead widened section groove in the embodiment, the reinforcing crossbeam penetrates the reinforcement structure, and the reinforcement structure is covered in the anti-falling cap by pouring, so as to enhance the bearing capacity of the anti-falling cap and further provide support for the reinforcing crossbeam, thereby further improving the overall stability of the shaft.
[0034] In addition, the length of the reinforcing crossbeam is not limited, as long as one end can be inserted into the shaft reinforcement and the other end can be stably arranged on the beam of the shaft base. Since the shaft base is close to the to-be-constructed shaft, the nearest distance between the shaft base and the side wall of the to-be-constructed shaft is usually about 2-3 meters, so in the embodiment, the length of the reinforcing crossbeam is perpendicular to the edge of the shaft base, and exceeds the outermost side of the poured shaft by about 3-4 meters.
[0035] As described above, the neck well section fourth system construction auxiliary structure provided by the embodiment is simple in structure, economical and practical, can integrate the shaft and the anti-falling cap, prevent the phenomenon of shaft sinking and shaft falling, and improve the construction effect of the shaft, especially the neck well section shaft passing through the fourth system stratum, and improve the stability of the shaft.
[0036] The neck well section fourth system construction auxiliary structure according to the neck well section fourth system construction auxiliary structure proposed by the utility model is described above with reference to the drawings in an exemplary manner. However, it should be understood by those skilled in the art that various improvements can be made to the neck well section fourth system construction auxiliary structure proposed by the utility model above without departing from the content of the utility model. Therefore, the protection scope of the utility model should be determined by the content of the appended claims.
Claims
1. A neck well segment fourth system construction auxiliary structure, characterized by, The neck well section fourth system construction auxiliary structure comprises a derrick foundation arranged at the side of a to-be-constructed shaft and a wellhead widened section groove arranged at the wellhead of the to-be-constructed shaft. A shaft formwork is arranged in the to-be-constructed shaft. A shaft reinforcement is arranged between the shaft formwork and the inner wall of the to-be-constructed shaft. A reinforcing cross beam is arranged between the shaft reinforcement and the derrick foundation. A shaft and a anti-falling cap formed by pouring concrete are formed between the outer side of the shaft formwork and the inner wall of the to-be-constructed shaft and between the shaft formwork and the wellhead widened section groove. The shaft and the anti-falling cap are integrally formed, and the reinforcing cross beam and the shaft reinforcement are covered in the anti-falling cap.
2. The neck well section fourth system construction auxiliary structure of claim 1, wherein One end of the reinforcing cross beam is inserted into the shaft reinforcement, and the other end is arranged on the ground beam of the derrick foundation.
3. The neck well section fourth system construction auxiliary structure of claim 2, wherein The derrick foundation is square.
4. The neck well section fourth system construction auxiliary structure of claim 3, wherein The number of the reinforcing cross beams is eight.
5. The neck well section fourth system construction auxiliary structure of claim 4, wherein Two reinforcing cross beams are arranged on each side of the derrick foundation.
6. The neck well section fourth system construction auxiliary structure of claim 5, wherein The reinforcing cross beam fixed on the derrick foundation is perpendicular to the side of the derrick foundation.
7. The neck well section fourth system construction auxiliary structure of claim 6, wherein The reinforcing cross beam is an I56b type I-beam.
8. The neck well section fourth system construction auxiliary structure of claim 7, wherein The length of the reinforcing cross beam is 3-4 meters longer than the outermost side of the shaft.
9. The neck well section fourth system construction auxiliary structure of claim 8, wherein A reinforcing structure is arranged in the wellhead widened section groove, the reinforcing cross beam penetrates the reinforcing structure, and the reinforcing structure is covered in the anti-falling cap.
10. The neck well section fourth system construction auxiliary structure of claim 1, wherein The shaft formwork is suspended at the center position in the to-be-constructed shaft by a hoist crane.