摘要
文章以布尔台煤矿42105综放工作面为研究背景,采用CDEM数值模拟软件,就重复采动条件下综放工作面覆岩移动规律进行了模拟研究,得到了工作面矿压显现的主要特征：4-2煤层破断步距为40 m;周期来压步距范围为14~24 m,平均步距为18 m。42105工作面下位关键层在直接顶跨落后物质的充填作用下,极限垮落距小于允许下沉量,从而形成砌体梁结构。
This paper used 42105 working face of Buretai coal mine as research background, and the CDEM, a numerical simulationsoftware, was adopted to research the movement law of overlying strata on repeated mining caving face. The main features of strata behaviors：breaking step distance of 4 -2 seam is about 40 m, periodic weighting step distance ranges 14-24 m, average step distance is18 m. Under the filling effect of the direct roof span and backward material, the limit of the 42105 working face is less than the allowablesettlement, thus the structure of the masomy beam is formed.
出处
《煤》
2016年第7期4-5,31,共3页
Coal
基金
国家自然科学基金煤炭联合基金重点资助项目(U1261207)
关键词
重复采动
覆岩移动规律
周期来压步距
砌体梁
repeated mining
the movement law of overlying strata
periodic weighting step
masomy beam
