Method for installing large-scale steel structure derrick of coal mine

By modeling and dynamically simulating the derrick foundation and main body, combined with finite element analysis and total station control, efficient and safe installation of the coal mine steel structure derrick was achieved, solving the problems of low construction efficiency and insufficient precision in existing technologies, saving costs and creating benefits.

CN120739583APending Publication Date: 2025-10-03HUAINAN MINING IND GRP
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Patent Information

Application Number
CN202510633933.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-16
Publication Date
2025-10-03

AI Technical Summary

Technical Problem

The existing coal mine steel structure derrick installation method has the problems of low construction efficiency, high cost, long construction period and low spatial positioning accuracy.

Method used

By modeling the derrick foundation and main body, generating spatial coordinate information, and dynamically simulating the installation process, combined with finite element force analysis and lug strength verification, the position of the anchor bolt casing and rooting hinge is precisely controlled, the center point of the segmented structure is precisely controlled using a total station, and the components are lifted and welded together using a crane to achieve safe and efficient installation of the derrick.

Benefits of technology

It significantly improved construction efficiency, reduced costs and construction period, ensured installation quality and safety, completed construction 18 days ahead of schedule on average, saved a lot of human resources, and created benefits of approximately 3 million yuan.

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Abstract

The invention discloses a coal mine large steel structure derrick installation method. The method comprises the steps that a derrick foundation and a derrick body are modeled; the foundation bolt sleeve assembly and the derrick main body are machined in a plant; carrying out lofting excavation according to a derrick foundation; main leg units are assembled on site; slowly and stably hoisting the auxiliary leg unit by using a crane; a crane is used for cooperating operation, and bulk units are hoisted part by part; and hoisting the upper unit to the lower opening of the main inclined frame by using a crane, and integrally hoisting the upper unit to complete the derrick installation construction. The derrick installation construction process is dynamically simulated through overall modeling, and the operability of the hoisting scheme is guaranteed; the derrick hoisting construction safety is ensured by combining finite element stress analysis and steel structure and lifting lug strength checking; according to the foundation bolt sleeve combination, the upper and lower child-mother cones are accurately spatially positioned, the position and elevation of the rooting hinge are accurately controlled, and the angle accuracy of the foundation bolt of the derrick is ensured.
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