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Method for designing working resistance of solid filling hydraulic support

A technology of hydraulic support and working resistance, which is applied in calculation, instrumentation, electrical and digital data processing, etc., can solve the problem of difficulty in determining the changing law of hydraulic support working resistance, and achieve the effect of precise mechanical relationship.

Active Publication Date: 2019-07-05
HEBEI UNIV OF ENG
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for designing the working resistance of a solid-filled hydraulic support to solve the technical problem existing in the prior art that it is difficult to determine the variation law of the working resistance of the hydraulic support during construction and use

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  • Method for designing working resistance of solid filling hydraulic support
  • Method for designing working resistance of solid filling hydraulic support
  • Method for designing working resistance of solid filling hydraulic support

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Embodiment Construction

[0049]In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0050] The "continuous curved beam" structural model expounds the formation process of the continuous curved beam and its geometric and mechanical characteristics. Due to the continuity of the structure, the transmission of force is maintained, thereby reducing the disturbance to the stress field of the original rock, and revealing in essence The form of rock formation movement in filling mining.

[0051] As for the movement of rock formations mined by the caving method, long-term practical observation and research have shown that with the advancement of the working...

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Abstract

The invention provides a method for designing working resistance of a solid filling hydraulic support, and belongs to the technical field of filling coal mining mechanical equipment. According to themethod, a mechanical model of interaction of a top plate, a bracket and a filling body of a multi-span statically indeterminate structure is adopted; joint numerical model, an overlying strata stresscurve is used as a top plate load; the load distribution of the top plate is reflected more truly. The mechanical relationship between the support and the supporting acting force of the filling body is more accurate, the supporting strength of the front top beam and the rear top beam of the hydraulic support of the double-top-beam structure can be obtained according to different elastic foundationcoefficients of the filling body and different top plate deformation limiting conditions, and compared with an existing support design method, the method is more scientific and reasonable.

Description

technical field [0001] The invention belongs to the technical field of filling coal mining machinery equipment, and more specifically relates to a method for designing the working resistance of a solid filling hydraulic support. Background technique [0002] Filling mining is a mining method that uses hydraulic supports as supports to continuously fill the gap between the hydraulic supports and the rock roof with filling bodies such as gangue to prevent the deformation and collapse of the rock roof. [0003] The distribution characteristics of the stress field in the overlying strata during filling mining have a great influence on the working state of the hydraulic support and the mechanical behavior of the filling body, and the hydraulic support and the filling body react on the stress distribution of the roof. Conditions are also closely related to the mechanical properties of the filling body. [0004] The redistribution process of rock formation stress field in filling ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23G06F2119/06
Inventor 刘建功郭进喜史艳楠王毅颖李新旺赵家巍刘宇轩
Owner HEBEI UNIV OF ENG
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