应用有限元方法对相邻煤层开发中的定向水力压裂进行论证

IF 0.1 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Proceedings of the Tula States University-Sciences of Earth Pub Date : 2023-01-01 DOI:10.46689/2218-5194-2023-1-1-426-434

I. Ermakova, Vyacheslav A. Gogolin

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引用次数: 0

摘要

采用有限元方法，对确定两个紧密间隔的倾斜煤层应力-应变状态的问题进行了数值求解。研究了上采煤层对下采煤层准备开挖过程中形成的矿柱强度状态的影响。研究表明，上煤层顶板定向水力压裂可使下煤层矿柱卸载25%，并保持其强度状态。

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APPLICATION OF THE FINITE ELEMENT METHOD TO JUSTIFY DIRECTIONAL HYDRAULIC FRACTURING IN THE DEVELOPMENT OF ADJACENT SEAMS

The problem of determining the stress-strain state of two closely spaced sloping coal seams was solved numerically by the finite element method. The influence of the upper coal seam being mined on the strength state of the pillar, which is formed during the preparation of the lower coal seam for excavation, was studied. It has been established that the use of directed hydraulic fracturing of the roof of the upper coal seam allows unloading the pillar on the lower coal seam by 25 % and maintaining its strength state.

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Proceedings of the Tula States University-Sciences of Earth GEOSCIENCES, MULTIDISCIPLINARY-

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