摘要
为了更好地评价地下开采对地下构筑物及对地表建筑物安全的影响,基于随机介质理论推导了开采影响下单个剖面上的岩体内部的移动和变形计算公式,探讨了水平剖面及倾斜剖面上留设煤柱的影响,并对双向非充分开采时岩土体的移动和变形计算作了一定的研究.针对各种位移及变形计算公式,通过计算机编程,以定义函数的方式实现了相应的计算,并阐明了计算参数的确定方法.对平煤集团十矿的北回风井保安煤柱以外开采对井筒变形的影响进行了计算,得出开采影响下沿深度井筒不同部位的伸缩及水平变形.结果表明:该井筒沿深度方向的最大竖直变形及最大水平变形均出现在井口处,分别为1.3 mm/m及7.0 mm/m,为井筒的安全评价及保安矿柱的留设提供了依据.
In order to evaluate the influence on the underground structures and the upper buildings,based on the stochastic medium theory,formula for the movement and deformation of rock mass in a single section plane were derived,which considered the horizontal and inclined section planes and the influence of coal pillar.Furthermore,the movement and deformation of rock mass induced by insufficient mining in the two orthogonal directions were discussed.A program was developed to compute the movement and deformation of the soil and rock mass resulted from mining,in which the functions including the all formula provided in the article was defined.The method of determining relative parameters was put forward.A shaft in the 10th coal mine of Pingdingshan coal Co.Ltd resulted from the mining surrounding the safety coal pillar,the movement and deformation of the rock mass along the draft were obtained.The results show that the maximum vertical and horizontal deformations of the shafts happen at the shaft mouse are 1.3 mm/m and 7.0 mm/m which is very significant to the protection of drafts and the design of safety coal pillars.
出处
《采矿与安全工程学报》
EI
北大核心
2011年第1期109-114,共6页
Journal of Mining & Safety Engineering
基金
国家自然科学基金项目(50708116)
中国博士后科学基金项目(200801206)
中国博士后基金面上项目(20080430690)
湖南省交通厅科技进步与创新计划项目(200810)
关键词
开采沉陷
非充分开采
随机介质理论
保安煤柱
岩体移动
mining subsidence
insufficient mining
stochastic medium theory
safety coal pillar
rock movement
