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中文摘要：
为了进一步研究煤岩断裂特征及取得相关力学性质参数,以MTS三轴测试系统、点荷载仪分别结合声发射（acoustic emission,AE）的联合测试技术对5^-2煤样进行断裂韧度测试,通过获取煤样单轴抗压强度,并对测试结果进行分析比较得出：基于声发射的点荷载测试反映出不规则5^-2煤样破坏后形成明显的单一裂纹,平均单轴抗压强度为50MPa;MTS三轴测试系统结合声发射测试反映标准试件在自然和饱水两种状态下屈服破坏后,部分呈散体状破坏,但大部分仍然保持较高的完整性,平均单轴抗压强度31.13MPa。两种测试方法虽然在单轴抗压强度数值上存在了一定差异,但都体现出煤样坚固致密的特点,这种多手段联合测试技术为获取更加精确的参数提供了新的研究途径。
英文摘要：
In order to further study the coal and rock breaking features and the obtained related mechanics property parameters, the MTS triaxial measuring and test system and the point load apparatus individually with the aeouatie emission （AE） combined technology were applied to the breaking tenacity measurement and test of the 5 -2 coal sample with the uniaxial compressive strength obtained of the coal sample. The analysis and comparison on the measured and test results showed that base on the acoustic emission, the point load measurement and test reflected that the abnormal 5 - 2 coal sample after failure would form obvious unitary crack and the average uniaxial compressive strength would be 50MPa. The NTS triaxial measuring and test system with the acoustic emission could reflect that the standard test specimen under the natural and the water saturated status after the yield failure, the partial specimen would be failed in bulk and major specimen would highly keep in completeness. The average uniaxial compressive strength would be 31.13MPa. Although there was a certain difference in the uniaxial compressive strength values between the two measuring and test methods, but the two methods all have the hard and dense features of the coal samples. Those multi means combined measurement and test technology could provide the new study access to have more accurate parameters.
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