眼泪的汛期 - 王唯旖

芦岭煤矿为了解决工作面初采期间顶板管理困难问题，芦岭煤矿结合现有技术摒弃传统的放炮工艺。通过施工顶板水力压裂钻孔—人工增加坚硬顶板中裂隙数目，在坚硬顶板中形成复杂水压裂缝网络，破坏其整体性，从而改变坚硬顶板在此支撑点的约束条件和断裂特性，促使采空区悬顶及时垮落，实现了工作面出切眼期间顶板精准控制，确保了安全生产。

In this article, we determine conditions on the parameters of a generalized convolution operator such that it belongs to the Hardy space and to the space of bounded analytic functions. Results obtained are new and their usefulness is depicted by deducing several interesting examples.