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对当前矿井防隔水煤柱留设中存在的问题进行简单介绍,由此引出煤的抗拉强度测定方法的讨论,经过分析比较得到了较为可靠的结论:在有条件的情况下尽可能使用原位测试方法测定抗拉强度;实验室方面,套筒致裂法具有相对准确性和易操作性,在实践过程中可加以推广。提出加强对煤的基本物理性质的研究以寻求煤岩抗拉强度测试的新方法。
This paper briefly introduces the existing problems in coal mines with anti-sequestration, and leads to the discussion on the method of measuring the tensile strength of coal. After the analysis and comparison, the more reliable conclusion is obtained: if possible, use it as much as possible In-situ test method to determine the tensile strength; Laboratory, the sleeve fracture method with relative accuracy and ease of operation, in practice can be promoted. Proposed to strengthen the study of the basic physical properties of coal in order to seek a new method of tensile strength test of coal and rock.