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中文摘要：
在复杂工程地质条件下，煤矿深部Y型大断面交岔点严重变形，牛鼻子部位破坏尤为严重。通过现场调查及理论研究，总结深部Y型大断面交岔点的典型破坏形式。研究表明深部高应力、牛鼻子部位两侧无约束分别支护是其破坏的主要原因，提出深部Y型大断面交岔点双控锚杆支护技术。将研究成果应用于夹河矿深部交岔点工程中，应用效果良好。
英文摘要：
Under geological conditions at deep coal mine, the crossing roadway especially Y-type experienced large deformation. The junction pillar cguld be the weakest link. Based on in-situ investigation and theoretical study, typical forms of the destruction were summarized. High stress and unrestrained deformation at two sides of junction pillar were two main factors affecting the stability of the cross-section. Deep Y-type large cross-section junction double-control anchor support technology was proposed. The technology has been used in deep intersection engineering in Jiahe coal mine.
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