深井高应力难采煤层上行卸压开采的研究与实践

以新汶矿区为工程背景，深入研究了采动覆岩裂隙亚分带特征、覆岩运动与结构分带特征、上行卸压开采作用效应，建立了上行卸压开采可行程度的评价方法，论证了深井复合顶板煤层上行卸压开采的可行程度，通过应用实践根除了深井高应力难采煤层的多重障碍，为上行卸压开采的可行程度判别、区域划分、开采部署提供了决策依据。     

Research on relations between failure heights of overburden strata and ~] / mining face parameters and forecasting method

The commercial FEM software ANSYS was used to analyze the failure characteristics of overburden strata under the conditions of different lengths of mining faces. It was shown that the parameters of mining faces, especially the length was the important factor to the failure heights and shapes of overburden strata. Fuzzy mathematics and statistical methods were used to analyze the forecasting method of the failure height of overburden strata influenced by the parameters of mining face based on the measured data under the conditions of fully-mechanized mining of general hardness cover rocks. On the basis of these analyses, a new forecasting formula was gotten. The forecasting result conforms to the in situ measured value. The result has a very important application value in safe and high-efficient mining, and has a very important advancing function to theoretical studies.     

预应力中空注浆锚索在复杂地质条件中的应用

基于锚索锚固系统载荷传递机理,对星村煤矿-1 196水平特大断层破碎带巷道运用预应力中空注浆锚索进行锚固。采用FLAC3D数值模拟方法,建立不同拉拔载荷作用下预应力中空注浆锚索的载荷传递力学模型,研究该锚索的载荷传递规律。     

厚煤层不同开采方法覆岩破坏规律研究

在对不同开采方法覆岩破坏高度实测资料分析对比的基础上,研究了冒落岩层高度及碎胀性与覆岩破坏高度的关系,探讨了开采方法对覆岩破坏高度的影响,其结论对于覆岩破坏理论研究及水体下采煤实践具有促进与指导意义.     

矿井突水原因及其防治

根据现场工作的实际及有关理论分析,将突水原因归纳为矿压、断裂、隔水层、含水层4个方面,在分析突水因素的基础上,提出了针对不同的水文地质条件,采取不同的防治水措施,减少突水因素的影响,预防突水,保证矿井安全生产.     

兖州矿区放顶煤开采覆岩破坏规律探测研究

在利用井下仰孔探测技术探测了三个矿井放顶煤开采覆岩破坏高度的基础上， 总结分析了导水裂隙带的形态特征及其最大高度发育过程， 所得结论对于进一步研究放顶煤开采覆岩破坏规律及安全生产具有重要的参考与实用价值．     

隔水底板应力溶蚀机理

应用断裂力学理论和水化学理论，分析了底板隔水层导高带发展机理，指出了应力溶蚀作用是导高带发展的动力．隔水底板中的构造裂隙因水的溶蚀作用、水的楔劈作用和构造应力作用而得到扩张，由此导致导高带逐渐上升，从而减少了有效隔水带的厚度．     

厚煤层不同开采方法覆岩破坏规律研究

在对不同开采方法覆岩破坏高度实测资料分析对比的基础上，研究了冒落岩层高度及碎胀性与覆岩破坏高度的关系，探讨了开采方法对覆岩破坏高度的影响，其结论对于覆岩破坏理论研究及水体下采煤实践具有促进与指导意义．     

Study on mathematical model of steam coal blending

It is necessary to set up a new mathematical model of steam coal blending instead of the old model. Indexes such as moisture content, ash content, volatile matter, suffur content and heating value in the new mathematical model have linear relation. The new mathematical model can also predict ash-fusion temperature precisely by considering coal ash ratio in steam coal blending, therefore it is possible to obtain linear relation of ash-fusion temperature between single coal and steam coal blending. The new mathematical model can improve precision of steam coal blending and perfect the old mathematical model of steam coal blending.     

回采巷道围岩变形率的预测

巷道围岩变形率预测是巷道支护设计的主要环节，本文以影响回采巷道稳定性的主要因素为基础，分析整理了我国煤矿１００多条典型的巷道实测数据，应用多元线性回归方法，建立了预测各类巷道围岩变形率的回归方程，经理论检验与实例验证，预测方法可用于我国回采巷道控制设计，具有广泛的实用价值。