roof weighting step 来压步距
roof weighting forecasting 来压预报
intensity of roof weighting 顶板来压强度
The intervals of main roof weighting at work faces were predicted by using artificial neural network.
利用人工神经元网络对工作面的顶板来压步距进行了预测。
The loci of plastic hinge line and the maximum load during first roof weighting are determined by using kinematical method, and the minimum span of roof key stratum is derived.
利用机动法确定了老顶岩板初次来压时载荷的上限值和塑铰线的位置，得到了顶板岩体关键层的最小破断跨距。
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