地表新增荷载对采空区上方覆岩的影响规律

通过相似材料模拟实验,研究了全部开采和部分开采条件下的采空区在地表新增荷载后,地表附加沉降和采空区上覆岩层内应力的变化规律.研究表明,地表加载点与采空区的相对位置不同时加载后地表附加沉降量具有明显差异,越靠近采空区,中央沉降量越大,实测到的开采前上覆岩层内应力基本上随深度增加线性增大,开采后上覆岩层内应力发生重分布,加载后的附加应力分布随深度增加逐渐减小.     

Methane concentration in the worked-out space of the mining segment

Conclusions In all the investigated ventilation layouts, large segments have been recorded in the worked-out space, where volume concentration of methane is consistent with Coward’s explosion triangle. The volume of the explosion-prone zone is somewhat lower with a ventilation layout reverse with respect to the rock mass. This is determined by a greater reduction of the rate of outflow, beginning with distance from the cutting stretch, typical of the given section. The comparatively short distance of the explosion-prone zones from the mined section with an outflow indicates feasibility of engineering installations securing mine safety through pumping in of neutral gases. Maintaining a ventilating shaft behind the cutting stretch in a ventilation layout reverse with respect to the rock mass substantially removes the zone of higher methane concentration (at the established level of ventilation) from the working side. Four characteristic variants of changes in methane concentration deeper into the worked-out space are theoretically possible depending on the character of inflow and filtration properties of rocks. In ventilation layouts considerably bending the outflow channels, and also in the presence of disturbing factors during unloading the coal measures, changes in methane concentration may be polyextreme. Donets Coal Institute. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 78–85, May–June, 1984.     

阳泉矿区聚煤作用分析

Ｃ－Ｐ纪阳泉矿区发生了广泛的聚煤作用，对此进行分析研究，预测煤层赋存变化情况，为煤炭资源开采生产提供指导。     

Method of stowing a worked-out space

A. F. Mozhaiskii Military Space Engineering Institute, St. Petersburg. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 51–55, November–December, 1993.     

论选煤厂采暖设计需要改进的几个问题

在选煤厂的设计中，采暖设计不仅直接关系到正常的生产秩序，而且对改善人们的工作环境也起着重要的作用。作者从四个方面论述了需要改进的问题，指出选煤厂的采暖设计应不断适应采暖技术的新潮流，使用新技术、新产品，以达到提高设计水平，降低能耗，扩大采暖面积，提高采暖效率，更好地为生产服务。     

离柳矿区煤的微显特征

离柳矿区5号煤层以其镜质体、矿物和灰分含量高为特点明显区别于4号煤层，8号煤层以其惰质体和半镜质体含量较高为特征有别于9号煤层。     

煤炭地下气化技术在新汶矿区的应用

介绍了煤炭地下气化技术在新汶矿业集团的实施状况与进一步发展；分析了该技术目前存在的一些问题，认为应在实践中逐渐完善煤炭地下气化技术。