急倾斜煤层顶板破坏特征相似模拟
Study on Similar Simulation for Roof Failure Characteristics of Steep Coal Seam
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摘要: 针对山西潞安集团潞宁大汉沟煤业有限公司地质条件和煤的赋存状况,运用可绕轴旋转试验模型架对该矿的5个可采煤层进行相似模拟。对各层煤分2个水平严格按照时间相似比进行模拟开采。用数码相机记录顶板的弯曲破断形态,并结合各水平各区段在模拟开采过程中与开挖完成后的位移变化,分析急倾斜煤层顶板弯曲破断的共性和特殊性。Abstract: According to geological conditions and coal seam occurrence conditions of Lu'an Group in Shanxi,using similar simulation test methods, the test model frame developed by Taiyuan University of Technology was used to simulate five coal seams. These coal seams were divided into two horizontal layers, coal mining is in accord with time similar ratio strictly. Using a digital camera to observe the breaking and bending of the basic roof, combining with the camera records from each level displacement of each section in the mining process and after the excavation, the paper analyzes commonality and particularity of the breaking and bending of the basic roof.
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