Method of verifying reasonable working resistance of working face hydraulic support

A working resistance and hydraulic support technology, which is applied to mine roof supports, earth-moving drilling, mining equipment, etc., can solve the problem of lack of a reasonable support working resistance verification and setting method, lack of working face roof control effect standards, and lack of roof control. performance standards, etc.
CN103590846AInactive Publication Date: 2014-02-19SHANDONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANDONG UNIV OF SCI & TECH
Publication Date
2014-02-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method of verifying reasonable working resistance of a working face hydraulic support includes the steps of measuring and calculating four resistance values p required by verification of working face support reasonable working resistance, and a sum of the values; measuring and calculating working face roof settlement delta hi; dividing working face roof control effects; determining a support reasonable working resistance alternative Ri; counting a ratio A1 of support end resistance ri during working face roof weighting, exceeding the values p and the sum; verifying working face support reasonable working resistance R. The method has the advantages that finished working face support reasonable working resistance and the efficiency of determining the support reasonable working resistance is greatly improved in terms of methodic systemization and parameter quantification.
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Description

technical field

[0001] The invention belongs to the field of roof control of longwall working faces in coal mining, and in particular relates to a checking method for reasonable working resistance of hydraulic supports on working faces. Background technique

[0002] With the popularization of mechanized mining methods in the coal mining face, the extremely wide use of fully mechanized mining hydraulic supports has become inevitable. At present, 50,000 to 60,000 fully mechanized mining hydraulic supports are newly put into use in my country per year. The selection of support type and parameters before mining has become the core issue restricting the safe and efficient production of fully mechanized mining face, among which support working resistance (support strength) is the most basic and important parameter. Affected by mine pressure, the working resistance of the support is low, and the support is easily damaged in a large area or even crushed to death, which cannot guaran...

Claims

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