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Prediction method for height of filling and mining water flowing fracture zone

A prediction method and fault zone technology, applied in the field of mine production safety, can solve problems such as poor accuracy of water-conducting fault zones, insufficient consideration of roof lithology and horizon distribution, etc., and achieve accurate and specific results in the calculation process.

Active Publication Date: 2015-04-01
LIAONING TECHNICAL UNIVERSITY
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Problems solved by technology

[0003] The current calculation method for the water-conducting fault zone in filling mining is characterized by the first use of rock mechanics theory to calculate the height of the roof fault zone. In the past, the empirical formula was an algorithm summed up by predecessors based on a large number of historical statistical data of caving mining. , so the accuracy of calculating the water-conducting fault zone by the method of empirical formula is poor, and the algorithm of empirical formula does not fully consider the lithology of the roof and the distribution of horizons

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  • Prediction method for height of filling and mining water flowing fracture zone
  • Prediction method for height of filling and mining water flowing fracture zone
  • Prediction method for height of filling and mining water flowing fracture zone

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Embodiment Construction

[0048] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0049] In the embodiment of the present invention, the Xima Coal Mine is taken as an example for illustration. No. 13 coal of the Xima Coal Mine is the main mining coal seam, and the coal seam is stable in occurrence and excellent in coal quality. Taking the 1327 work as an example for research and analysis, the roof management method of the working face is paste-like filling, the filling method is gravity filling, and the filling aggregate is mainly broken coal gangue; fly ash and composite water reducer are added to the filling, Ordinary Portland cement marked No. 325 was added as a gelling agent, and the maximum compression ratio measured by the filling body laboratory was 3.65%. The mining method was inclined longwall retreating upward mining, the average inclination angle of the working face was 9°, and the inclination length was 501.9°. m, the st...

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Abstract

The invention discloses a prediction method for height of a filling and mining water flowing fracture zone, and belongs to the technical field of mine production safety. The height of a roof fracture zone is subjected to theoretical analysis and calculation with a rock mechanics theoretical method, and traditional experience prediction on the top plate fracture is lifted to theoretical prediction. Geologic overview and filling technical characteristics of different mines are fully considered, so that a calculation process of a water flowing fracture zone of a roof is more accurate and specific, thereby, making up a blank of a current theoretical calculation method for the height of the filling and mining the water flowing fracture zone, and providing more support and guarantee for the mine safety production.

Description

technical field [0001] The invention belongs to the technical field of mine production safety, and in particular relates to a method for predicting the height of a water-conducting fault zone in filling mining. Background technique [0002] Over the years, the research on filling mining has achieved some phased results, mainly studying the theory of mine pressure and rock formation control, filling system design and filling equipment. However, there are few studies on the movement law of the roof and the movement law of the roof strata after filling mining. During filling mining, because the filling body restricts the movement of the roof, the movement law of the roof during filling mining is not exactly the same as that of caving mining, so it is necessary to further study the movement law of the roof of filling mining. [0003] The current calculation method for the water-conducting fault zone in filling mining is characterized by the first use of rock mechanics theory to...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/02
CPCG06Q10/04G06Q50/02
Inventor 杨艳国王猛秦洪岩刘浩董强强王军王祎韩久博
Owner LIAONING TECHNICAL UNIVERSITY
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