Soft stratum vertical shaft derrick structure and construction method thereof

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...

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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 are disadvantages such as long construction period and high cost; when the outer wall of the well neck is constructed, the ground is soft and its own bearing capacity is poor. The traditional method is Methods such as the back plate of the well circle, upward pillars on the well wall, and the freezing method were used, but due to the poor enclosing force and small supporting force of the well wall, the well wall fell under its own weight, and the phenomenon of "pants taking off" occurred, causing serious safety hazards. ACCIDENT

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