共被期刊论文引用了2次
您的检索式：您选中1篇文献正在查看引证文献汇总
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 深部建井力学研究进展显示文摘随着浅部煤炭资源的日益枯竭,我国煤炭开采朝着深部化和大型化方向发展,新建和改扩建的大型立井年生产能力已达1 000万t,开采最大深度已达1 500 m。千米深井在建井时所处的高应力、'各向异性'(包括岩体、结构、应力等)复杂地质力学环境,造成井筒以及井底车场大巷围岩出现塌方、岩爆以及冲击地压等大变形灾害,严重影响深部矿井安全高效建设。在国家重点研发计划'深地资源勘查开采'重点专项'煤矿深井建设与提升基础理论及关键技术'支持下,提出了深部非均压建井模式,以非均匀支护应对非均匀围岩压力;对煤系地层深部建井中典型的地层结构进行分类,并建立了深部不同应力条件下立井井筒力学模型;开展了一系列模拟深部环境下的多场、多尺度岩石力学实验,探明了深部建井岩体的各向异性与深部环境相互作用过程中的大变形力学特性,揭示了深部复杂地质环境下岩体大变形力学机理;研发了适用于深部建井岩体大变形控制NPR锚杆锚索新材料,进行了一系列拉拔力学实验对其优越性进行科学论证,并最终形成了一整套基于NPR锚杆锚索的支护技术;开展了无煤柱自成巷N00矿井建设研究,基于'切顶短臂梁'理论,建立了采矿损伤不变量的采矿工程模型。 | 何满潮 | 2021 | 煤炭学报2021，46，3： | 45 |
| 2 | Analytical study on pretensioned bolt-cable combined support of large cross-section tunnel显示文摘To study the mechanical responses of large cross-section tunnel reinforced by pretensioned rock bolts and anchor cables, an analytical model is proposed. Considering the interaction between rock mass and bolt-cable support, the strain softening characteristic of rock mass, the elastic-plastic characteristic of bolt-cable support, and the delay effect of installation are considered in the model. To solve the different mechanical cases of tunneling reinforced by bolt-cable support, an analytical approach has been put forward to get the solutions of stress and displacement associated with tunneling. The proposed analytical model is verified by numerical simulation. Moreover, parametric analysis is performed to study the effects of pretension force,cross-section area, length, and supporting density of bolt-cable support on tunnel reinforcement, which can provide references for determining these parameters in tunnel design. Based on the analytical model, a new Ground Response Curve(GRC)considering the reinforcement of bolt-cable support is obtained, which shows the pretension forces and the timely installation are important in bolt-cable support. In addition, the proposed model is applied to the analysis of the Great Wall Station Tunnel, a high-speed railway tunnel with a super large cross-section, which shows that the analytical model of bolt-cable support was a useful tool for preliminary design of large cross-section tunnel. | LUO JiWei ZHANG DingLi FANG Qian LI Ao SUN ZhenYu CAO LiQiang | 2020 | Science China(Technological Sciences)2020，63，9： | 6 |
您所在的机构暂未开通此部分的功能，请联系管理员