摘要
通过平面应力走向、倾斜和三维可加载块体模型等手段,较系统地研究了大倾角煤层走向长壁工作面(倾斜布置)开采过程中矿山压力显现规律、围岩变形、破坏与移动特征和工作面支架与设备的下滑机理;分析探讨了顶板破断岩块运动、底板破坏滑移以及主要回采工序对支架或支护系统工作阻力和"R-S-F"(顶板-支架-底板)系统动态稳定性的影响;提出了现场工业性试验时需要注意和重点解决的关键技术问题。
By means of test method of plane stress simulating models on strike and slope as well as threedimension adjustable load blocks model, the author studies systemically the strata behaviors, characteristics of surrounding rock deformation, fracture and movement along with sliding mechanism of face supports and equipments. At the same time, the paper probes into the influence of roof fracture blocks moving, floor fracture blocks sliding and main procedures on the working resistance of supports or support system and dynamic stability of system 'R-S-F'. Finally, it puts forward the key problems to which attention are paid and must be solved in site industrial experiment in longwall mining on strike of steeply dipping seam.
基金
陕西省自然科学基金项目(2002E218)
陕西省重点实验室研究项目(2001)
