Soft stratum vertical shaft derrick structure and construction method thereof

A technology for weak strata and construction methods, which is applied in shaft equipment, earthwork drilling, wellbore lining, etc., and can solve problems such as low bearing capacity, poor self-bearing capacity, safety accidents, etc.

Pending Publication Date: 2021-07-16
JCHX MINING MANAGEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the surface soil section of the wellbore is soft, the bearing capacity is low, the construction is difficult, the safety risk is high, and a little carelessness will often cause the accident of uneven settlement of the derrick foundation and the overall fall of the well wall; in order to avoid the uneven settlement of the foundation, the traditional method In order to strengthen the soil layer of the foundation pit by grouting or constructing pile foundations to improve the bearing capacity of the ground itself, but there a

Method used

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  • Soft stratum vertical shaft derrick structure and construction method thereof
  • Soft stratum vertical shaft derrick structure and construction method thereof
  • Soft stratum vertical shaft derrick structure and construction method thereof

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Embodiment 1

[0038] Such as figure 1 , figure 2 As shown, the present embodiment includes a shaft derrick structure for a weak formation, specifically comprising an outer well wall 1 arranged on the inner wall of the well, an inner well wall 2 is fixedly arranged on the inner wall of the outer well wall 1, and the A plurality of derrick foundations 3 are evenly arranged on the outer side of the outer well wall 1, and the derrick foundation 3 and the outer well wall 1 are arranged at intervals, and the outer well wall 1 and the derrick foundation 3 are arranged at intervals. There is an anti-fall beam structure 4, and the anti-fall beam structure 4 is fixedly connected with the derrick foundation 3 and the outer well wall 1 respectively, and a steel wire rope 5 is fixedly arranged on the outer well wall 1, and the steel wire rope 5 They are respectively fixedly connected with the outer well wall 1 and the derrick foundation 3 . By setting the derrick foundation 3 and connecting the derri...

Embodiment 2

[0045] This embodiment discloses a construction method for a shaft derrick structure in a weak stratum, including the following steps:

[0046] Step 1, measuring and setting out, according to the coordinate points and elevation points, use the total station to make a good point near the well, measure and set out on the surface according to the construction drawing, mark it with lime powder, and start the next step after the self-inspection is correct. one step construction;

[0047] Step 2: Excavation and leveling of the foundation pit, using an excavator to excavate, excavating the inside of the wellbore to the depth of the upper opening of the anti-fall beam structure 4 at one time, and then using a loader to compact the foundation pit and leveling manually;

[0048] Step 3, construction of the derrick foundation 3 and the anti-fall beam structure 4, pouring a plurality of derrick foundation 3 and the anti-fall beam structure 4 around the foundation pit;

[0049] Step 4, co...

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Abstract

The invention relates to the technical field of mine engineering equipment, in particular to a soft stratum vertical shaft derrick structure and a construction method thereof. The soft stratum vertical shaft derrick structure comprises an outer-layer well wall arranged on the inner wall of a well, an inner-layer well wall is fixedly arranged on the inner wall of the outer-layer well wall, and a plurality of derrick foundations are evenly arranged on the outer side of the outer-layer well wall; and the derrick foundations and the outer-layer well wall are arranged at intervals, an anti-falling beam structure is arranged between the outer-layer well wall and the derrick foundations, the anti-falling beam structure is correspondingly and fixedly connected with the derrick foundations and the outer-layer well wall, a steel wire rope is fixedly arranged on the outer-layer well wall, and the steel wire rope is correspondingly and fixedly connected with the outer well wall and the derrick foundations. The soft stratum vertical shaft derrick structure has the beneficial effects that the rigidity and the overall stability of the derrick foundations are improved, the bearing capacity of the derrick foundations is improved, and the differential settlement risk of the derrick foundations is reduced; and meanwhile, the outer-layer well wall is suspended through the steel wire rope, and the falling risk of the outer-layer well wall is further reduced.

Description

technical field [0001] The invention relates to the technical field of mine engineering equipment, in particular to a shaft derrick structure in soft ground and a construction method thereof. Background technique [0002] In the development process of deep underground mineral resources, the shaft project is the throat project of the mine. During the construction of the shaft, the uneven settlement of the derrick foundation and the fall of the shaft wall will bring many economic and safety problems to the project. When the surface soil section of the wellbore is soft, the bearing capacity is low, the construction is difficult, the safety risk is high, and a little carelessness will often cause the accident of uneven settlement of the derrick foundation and the overall fall of the well wall; in order to avoid the uneven settlement of the foundation, the traditional method In order to strengthen the soil layer of the foundation pit by grouting or construct pile foundations to i...

Claims

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Application Information

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IPC IPC(8): E21D5/00E21D5/11E21D7/00E21D21/00
CPCE21D5/00E21D5/11E21D7/00E21D21/0006Y02E10/20
Inventor 陈锋周根明赵明祥宋军平王运海李志鸿
Owner JCHX MINING MANAGEMENT
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