防水隔离煤柱结构分区及合理宽度确定

发布时间：2018-10-09 16:13

【摘要】：在现有煤柱合理结构分区的基础上,将其结构分为塑性区、弹性核区、水压破坏区。为求得各区宽度,首先,应用极限平衡理论和抛物线型强度理论,采用分离变量法确定了塑性区宽度;考虑矿压、水压作用,选用统一强度理论,采用半逆解法,确定了弹性核区宽度;考虑水的浸润软化作用,确定了水压破坏区宽度。之后,通过与以往经典模型各分区计算公式对比,验证了模型的合理性。最后,通过超声波探测技术,测量了煤柱内部的物理形态分布,验证了模型的正确性,并将研究成果应用于董家河煤矿防水隔离煤柱设计中,为煤矿安全高效生产提供了理论依据。
[Abstract]:On the basis of the reasonable partition of the existing coal pillar structure, the structure is divided into plastic zone, elastic core zone and hydraulic failure zone. In order to obtain the width of each zone, the limit equilibrium theory and the parabolic strength theory are applied to determine the width of the plastic zone by using the method of separating variables, and the unified strength theory and the semi-inverse method are used to determine the width of the plastic zone, considering the effect of rock pressure and water pressure. The width of elastic core zone is determined, and the width of water pressure failure zone is determined considering the effect of water soakage and softening. After that, the rationality of the model is verified by comparing with the classical models. Finally, the physical distribution of coal pillar is measured by ultrasonic detection technology, and the correctness of the model is verified, and the research results are applied to the design of waterproof and isolated coal pillar in Dongjiahe coal mine. It provides a theoretical basis for the safe and efficient production of coal mines.
【作者单位】： 西安科技大学理学院;中煤科工集团西安研究院有限公司水文地质研究所;
【基金】：国家自然科学基金资助项目(41272340)~~
【分类号】：TD745;TD822.3
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本文编号：2259959