论文部分内容阅读
立井刚性井筒装备的设计计算（一）中国矿业大学郭晋蒲，田建胜，王东权（江苏徐州市）随着我国煤矿开采机械化程度的提高，开采水平越来越深，有许多矿区的井筒深度已达８００ｍ，已建成或正建与待建的千米深井约有十余处。井筒深度的增加，必将促使提升容器的增大和提升速度的提高。这无疑给罐道、罐梁的设计计算提出了一系列新的研究课题。１罐道、罐梁的截面形式罐道、罐梁的截面形式是随其功能的改变而发展的（图１）。以往在浅井单绳提升中，木罐道作为断绳支承构件，工字钢罐梁作为承受垂直方向断绳荷载的构件是完全合理的。而现今深井采用多绳提升，罐道除起导向作用外，主要是和罐梁共同来抵抗由提升容器在重载和高速运行中发生激烈摆动而产生的水平动荷载。因此，采用型钢组合罐道和罐梁代替侧向刚性和截面系数较小的木罐道、钢轨罐道和工字钢罐梁是必然的。型钢组合罐道、罐梁虽然截面系数较大，但其加工、组装耗时，容易变形，且存在焊接残余应力，影响安装质量和使用寿命。因此，各种整体轧制罐道和异型截面罐梁应运而生。沈阳煤矿设计研究院提出了四种整体轧制罐道方案设计；马鞍山钢铁设计院亦已研制出冷弯矩形空心截面的罐道和罐梁。在大型深井中，罐道、罐梁的截面形式不仅影响通风，
(1) China Mining University Guo Jinpu, Tian Jiansheng and Wang Dongquan (Xuzhou City, Jiangsu Province) With the improvement of the degree of mechanization of coal mining in our country, the exploitation level is deeper and deeper, and the depth of many wellbores has reached 800m. Has built or is being built and to be built about 1,000 deep wells. Increasing the depth of the wellbore will surely promote the increase of the container and the increase of the lifting speed. This undoubtedly put forward a series of new research topics for the design and calculation of can road and can beam. 1 cans, cross-section of cans and cans Road, can cross-section of the tank girder with its functional changes and development (Figure 1). In the past in the shallow well single-rope hoisting, wood cans as a broken rope supporting member, I-beam canister girder as a vertical load breaking member is completely reasonable. In today’s deep well, multi-rope hoisting is adopted. In addition to the guiding function, the canister is mainly used together with the canister beam to resist the horizontal dynamic load caused by the violent swinging of the lifting container during heavy-load and high-speed operation. Therefore, the use of composite steel cans and cans instead of the lateral rigidity and cross section coefficient smaller wooden cans, rail canals and I-beam cantilever is inevitable. Although the cross-section coefficient of profiled steel cans and cans is relatively large, the machining and assembly time-consuming, easily deformed, and the welding residual stress exist, affecting the installation quality and service life. Therefore, a variety of overall rolling cans and shaped cross-section cantilever came into being. Shenyang Coal Mine Design and Research Institute proposed four overall rolling canopies program design; Maanshan Iron and Steel Institute has also developed a cold-formed rectangular hollow cross-section of the cannels and cans. In a large deep well, the cross-section of the can road and canister girder not only affects the ventilation,