王家山煤矿一号井主采二号和四号急倾斜煤层，采用水平分段综放开采。近年来随着开采深度的增加，一号井回采巷道掘进过程中出现明显底鼓和频繁煤炮现象，给安全开采带来隐患。为了预防和控制冲击地压灾害的发生，确保安全开采，开展急倾斜水平分段综放开采冲击地压机理与防治研究具有重要的理论和实践意义。本文以王家山煤矿一号井急倾斜煤层一 208 工作面为工程背景，综合应用现场实测、岩石力学实验、理论分析、FLAC3D数值模拟和工程实践相结合的方法，对王家山煤矿一号井冲击地压机理和防治技术进行了系统的研究。经岩石力学实验测试，依据《煤岩冲击倾向性评定》标准，判定王家山煤矿一号井二、四号煤层具有较高的冲击倾向性。通过数值模拟研究得出工作面推进过程中的围岩应力和超前支承压力变化规律，随着采煤工作面推进，工作面前方超前支承压力骤增，最大可达 6.44 MPa，影响范围在 12~18m 之间，且应力集中程度较高，导致煤层处于高静载状态。根据数值模拟和理论分析，水平分段综放开采后易形成悬顶空间结构，随工作面推进采空区顶板悬顶面积持续增加，顶板不断积聚弹性能，煤体内也存在高静载区，两者相互叠加，容易诱发冲击地压显现。其中，顶板积聚的弹性能是诱发冲击地压显现的主控因素之一。基于急倾斜煤层综放开采冲击地压发生机理，对冲击地压危险区域进行了划定，同时建立了冲击地压监测体系，提出了急倾斜煤层综放面局部综合卸压技术措施。通过对局部综合卸压技术方案的实施，采用钻屑法和微震监测法检验了卸压解危效果，验证了解危措施的可行性。
论文揭示了王家山煤矿一号井急倾斜煤层综放面冲击地压发生机理，提出了冲击地压监测及局部综合卸压解危措施，保障了工作面回采期间的作业安全。

Wangjiashan coal mine No.I shaft is mainly mining No.2 and No.4 sharply inclined coalseams, using horizontal sectional integrated mining. In recent years, with the increase ofmining depth, the bottom drum and frequent coal cannon phenomenon appeared in theprocess of No.l well back mining tunneling, which brings hidden danger to safe mining. Inorder to prevent and control the occurrence of impact pressure disasters and ensure safemining, it is important to carry out research on the mechanism and prevention of impactpressure in sharply tilted horizontal sectional consolidation mining.In this paper, the mechanism and prevention technology of impact ground pressure inWangjiashan coal mine No. I is systematically studied by combining field measurements,rock mechanics experiments, theoretical analysis. FLAC3D numerical simulation andengineering practice, taking Wangjiashan coal mine No. 1 sharply inclined coal seam No. 1208 working face as the engineering background, After the rock mechanics experimental test.according to the standard of "Coal Rock Impact Propensity Assessment", it was determinedthat the coal seam No.2 and No.4 of Wangjiashan coal mine No.l shaft has high impactpropensity. Through the numerical simulation study, the change law of surrounding rockstress and over-support pressure during the advancing of working face is obtained. With theadvancing of coal mining face, the over-support pressure in front of working face increasesabruptly up to 6.44MPa, and the influence range is between 12~18m, and the stressconcentration degree is high, which leads to the coal seam in high static load state. Accordingto the numerical simulation and theoretical analysis, the overhanging roof space structure iseasily formed after the horizontal sectional comprehensive discharge mining, and theoverhanging roof area of the roof plate continues to increase as the working face advances，

and the roof plate keeps accumulating elastic energy, and there is also a high static load area inside the coal, which are superimposed on each other and easily induce the impact ground pressure to appear. Among them, the elastic energy accumulated by the roof plate is one of the main control factors to induce the impact ground pressure. Based on the mechanism of the occurrence of impact ground pressure in the consolidated mining of sharply inclined coal seams, the impact ground pressure hazard area is delineated, and the impact ground pressure monitoring system is established, and the local comprehensive pressure relief technical measures are proposed for the consolidated mining of sharply inclined coal seams. Through the implementation of the integrated local pressure relief technology plan, the drilling chip method and the micro-vibration monitoring method were used to test the effect of pressure relief and the feasibility of the relief measures.

The paper reveals the mechanism of the occurrence of impact pressure at the comprehensive release face of the sharply inclined coal seam in Wangjiashan coal mine No. 1, and proposes the impact pressure monitoring and local comprehensive pressure relief measures to ensure the operational safety during the workface recovery.