中文摘要：

为进一步分析和揭示黄土沟壑区煤层开采损害特征形成的机理,在分析影响黄土沟壑区的采矿、地质条件及开采损害特征的基础上,分析了影响黄土沟壑区开采损害特征的3个关键因素：黄土沟壑区坡体稳定性、基采比和基载比,并以其为关键参数,分析了不同基采比和基载比条件下的覆岩破坏形态,揭示了黄土沟壑区煤层开采损害特征形成的机理.通过工程实例,验证了以基采比、基载比和坡体自身稳定性为关键参数进行分析的黄土沟壑区煤层开采地表损害特征的可靠性,可为进一步研究黄土沟壑区条件下煤层开采地表损害特征的形成机理提供依据.

英文摘要：

In order to further reveal the formation mechanism of the mining-induced damage characteristics in loess hilly area, analysis was made on the key factors affecting the mining-induced damage characteristics such as the slope stability, the ratio of bedrock thickness and mining height and the ratio of bedrock thickness and overburden thickness based on the analysis of the mining and geological conditions and mining-induced damage characteristics, and by taking these factors as key parameters, analysis was also carried out on the failure form of the overburden strata with different ratio of the bedrock thickness and mining height and ratio of the bedrock thickness and overburden thickness, which revealed the formation mechanism of the mining-induced damage characteristics in the loess hilly area. In-situ engineering practice results showed that it was reliable to get the surface damage characteristics with these key parameters, which provided basis for further studying the formation mechanism of the mining-induced damage characteristics in the loess hilly area.