Support adaptability evaluation method based on coupling relationship of support and surrounding rock
A technology of adaptability evaluation and coupling relationship, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of one-sidedness, single evaluation index, lack of unified standards, etc., achieve strong practicability, simple and effective evaluation method Effect
Active Publication Date: 2015-02-04
TIANDI SCI & TECH CO LTD
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[0004] Existing studies on the adaptability of hydraulic supports and surrounding rocks mainly analyze the adaptability of support working resistance, the evaluation index is single and one-sided, and there is a lack of unified standards
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[0034] figure 1 The flow chart of the method for evaluating the adaptability of supports and surrounding rocks is shown, which mainly includes the following steps:
[0035] The first step is to fully investigate the occurrence of the roof and floor of the coal seam (lithology, thickness, and buried depth of the roof and floor of the coal seam), rock mechanics parameters (uniaxial compressive strength of rock, tensile strength, cohesion, Poisson's ratio, internal friction angle ), geological structure (faults, folds, subsidence columns), understand the mining technical parameters of the working face (working face mining height, working face length, advancing length), analyze the frame structure characteristics and main technical parameters of the hydraulic supports used (hydraulic Support frame type, support strength, top beam structure, side protection device, anti-fall and anti-skid device, pushing mechanism), and specify the requirements for the hydraulic support to control ...
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The invention discloses a support adaptability evaluation method based on a coupling relationship of support and surrounding rock. The support adaptability evaluation method comprises the following steps: creatively establishing a coupling relationship model of a hydraulic support and the surrounding rock, analyzing the rigidity coupling relationship, the strength coupling relationship and the stability coupling relationship of the hydraulic support and the surrounding rock, and establishing an adaptability evaluation index system of the support and the surrounding rock; according to requirements on a surrounding rock control effect by different mining methods, determining an evaluation index system weighted value of the support and the surrounding rock; according to actual measurement data obtained in a site use process by the hydraulic support, determining an independent evaluation result of an evaluation index of the support and the surrounding rock; according to the target weighted value and the independent evaluation result of the evaluation index, obtaining an adaptability comprehensive evaluation result of the support and the surrounding rock; and through analysis to the evaluation result, providing an improved opinion on the design of the hydraulic support. The invention can comprehensively reflect an adaptation situation to the surrounding rock by the support and problems, provides an import theoretical and data support for formulating an improved design scheme of the support, is simple and effective, is strong in practicality and fills up a blank of an adaptability evaluation method of the mining hydraulic support and the surrounding rock in China.
Description
technical field [0001] The invention belongs to the technical field of coal mining, and relates to a method for evaluating the adaptability of a hydraulic support for coal mines, in particular to a method for evaluating the adaptability of a support based on the relationship between the support and surrounding rock stiffness coupling, strength coupling, and stability coupling. Background technique [0002] Coupling refers to the phenomenon that two or more systems affect each other through various interactions. The hydraulic support of the working face interacts and affects the coal seam, floor, goaf gangue, direct roof, basic roof, and overlying strata, which conforms to the coupling relationship of different systems; since the hydraulic support is mainly made of steel, the coal seam and the roof and floor strata belong to Rock mass, the interaction between the two conforms to the coupling relationship of different media. [0003] At present, the adaptability evaluation me...
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IPC IPC(8): G06F17/50
Inventor 王国法庞义辉傅京昱侯刚任怀伟刘俊峰李占平张金虎
Owner TIANDI SCI & TECH CO LTD
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