煤的抗拉强度测试方法及其存在问题

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。

Coal Tensile Strength Test Methods and Their Problems

The problems of waterproof coal pillar design for current coal mine were introduced briefly,the several test methods of coal tensile strength were discussed,and more reliable conclusions had been obtained through the analysis and comparison of these methods.The in-situ test method should be used as much as possible for the tensile strength test if the test condition was possible.Sleeve fracturing method in the laboratory aspects had relative accuracy and easy operation,which could be promoted in the course of practice.It was proposed that strengthening the study of basic physical properties of coal to seek new methods of coal and rock tensile strength test.