期刊文献+
共找到9篇文章
< 1 >
每页显示 20 50 100
断陷盆地层滑带的发育特征及矿山开发条件下的再变形分析 被引量:4
1
作者 张永双 曲永新 +1 位作者 胡绍祥 吕朋菊 《工程地质学报》 CSCD 1999年第2期154-160,共7页
层滑带在华北断陷盆地中具有普遍性,是影响地下矿山工程围岩稳定的重要因素之一。本文以鲁西矿区为例,阐述了断陷盆地层滑带的发育特征及其形成机制,进行了开挖、运营条件下层滑带再变形分析。
关键词 断陷盆地 煤矿 层滑带 巷道支护 岩石变形
下载PDF
层间滑动构造的定量研究 被引量:3
2
作者 王东卫 薛先棣 《西部探矿工程》 CAS 2003年第12期53-55,共3页
层间滑动构造是煤矿上普遍存在的一种地质构造 ,它一般可分为揉皱型、断滑型及断滑型 3种类型。结合层滑构造的发育规律建立了一套可行的定量评价指标体系 ,并借助这些指标进行了模糊综合评判 ,从而确定了井田不同块段的层滑类型 ,再利... 层间滑动构造是煤矿上普遍存在的一种地质构造 ,它一般可分为揉皱型、断滑型及断滑型 3种类型。结合层滑构造的发育规律建立了一套可行的定量评价指标体系 ,并借助这些指标进行了模糊综合评判 ,从而确定了井田不同块段的层滑类型 ,再利用不同类型的层滑特征及其发育规律指导煤矿构造评价 ,实现理论与实践的结合与提高。 展开更多
关键词 间滑动构造 煤系地 层滑带 定量评价 地质构造
下载PDF
永夏矿区车集井田层滑构造的研究
3
作者 李飞 孟宪义 程东全 《中州煤炭》 1998年第5期4-5,共2页
结合车集煤矿在巷道施工中发现的层滑构造,分析了该构造的一般特征及其对煤层的破坏作用,预测了层滑带的分布规律。
关键词 滑构造 层滑带 煤矿 矿井地质 车集井田
下载PDF
溪洛渡库区干海子滑坡变形特征分析 被引量:4
4
作者 樊柱军 王振 《中国地质灾害与防治学报》 CSCD 2013年第2期38-43,共6页
通过有限差分软件FLAC3D对滑坡进行了三维数值位移计算及变形特征分析,结果表明:水库正常蓄水至600m高程,滑坡的剪切变形主要集中在前缘垮堵湾附近,前缘局部会发生浅层滑带;后缘拉伸屈服区域较大,坡度较陡,可能会发生崩塌或倾倒;滑坡的... 通过有限差分软件FLAC3D对滑坡进行了三维数值位移计算及变形特征分析,结果表明:水库正常蓄水至600m高程,滑坡的剪切变形主要集中在前缘垮堵湾附近,前缘局部会发生浅层滑带;后缘拉伸屈服区域较大,坡度较陡,可能会发生崩塌或倾倒;滑坡的水平、竖向位移变形主要集中在前缘高程590~650m、x=479200~x=479214靠近跨堵弯附近区域。 展开更多
关键词 滑坡 变形特征 剪切变形 层滑带 拉伸屈服
下载PDF
采动间接损害分析
5
作者 栾元重 杜春明 +3 位作者 曲敬强 张玉财 盛月明 齐立伟 《矿山压力与顶板管理》 2000年第3期34-35,38,共3页
本文分析了地层失水引起地表移动与变形的机理与计算公式 ,提出了层滑带引起地表损害的思想 ,“地层失水”与“层滑带”二次变形构成了采动间接损害的主要因素 ,为有效地处理各类采动损害提供了理论工具。
关键词 失水 沉陷层滑带 采动损害 地表移动 变形机理
下载PDF
Dynamic analysis, simulation, and control of a 6-DOF IRB-120 robot manipulator using sliding mode control and boundary layer method 被引量:3
6
作者 Mojtaba HADI BARHAGHTALAB Vahid MEIGOLI +2 位作者 Mohammad Reza GOLBAHAR HAGHIGHI Seyyed Ahmad NAYERI Arash EBRAHIMI 《Journal of Central South University》 SCIE EI CAS CSCD 2018年第9期2219-2244,共26页
Because of its ease of implementation,a linear PID controller is generally used to control robotic manipulators.Linear controllers cannot effectively cope with uncertainties and variations in the parameters;therefore,... Because of its ease of implementation,a linear PID controller is generally used to control robotic manipulators.Linear controllers cannot effectively cope with uncertainties and variations in the parameters;therefore,nonlinear controllers with robust performance which can cope with these are recommended.The sliding mode control(SMC)is a robust state feedback control method for nonlinear systems that,in addition having a simple design,efficiently overcomes uncertainties and disturbances in the system.It also has a very fast transient response that is desirable when controlling robotic manipulators.The most critical drawback to SMC is chattering in the control input signal.To solve this problem,in this study,SMC is used with a boundary layer(SMCBL)to eliminate the chattering and improve the performance of the system.The proposed SMCBL was compared with inverse dynamic control(IDC),a conventional nonlinear control method.The kinematic and dynamic equations of the IRB-120 robot manipulator were initially extracted completely and accurately,and then the control of the robot manipulator using SMC was evaluated.For validation,the proposed control method was implemented on a 6-DOF IRB-120 robot manipulator in the presence of uncertainties.The results were simulated,tested,and compared in the MATLAB/Simulink environment.To further validate our work,the results were tested and confirmed experimentally on an actual IRB-120 robot manipulator. 展开更多
关键词 robot manipulator control IRB-120 robot sliding mode control sliding mode control with boundary layer inverse dynamic control
下载PDF
Crust Shortening of the Daliangshan Tectonic Zone in the Cenozoic Era and Its Implications
7
作者 Chen Changyun He Honglin 《Earthquake Research in China》 2009年第1期68-77,共10页
The Daliangshan tectonic zone is a rhombic area to the east of the Anninghe and Zemuhe fault zones in the middle segment of the Xianshuihe-Xiaojiang fault system along the southeast margin of the Qinghai-Xizang (Tibe... The Daliangshan tectonic zone is a rhombic area to the east of the Anninghe and Zemuhe fault zones in the middle segment of the Xianshuihe-Xiaojiang fault system along the southeast margin of the Qinghai-Xizang (Tibet) Plateau. Since the Cenozoic era, the neotectonic deformation in the Daliangshan tectonic zone has presented not only sinistral slip and reverse faulting along the Daliangshan fault zone, but also proximate SN-trending crust shortening. It is estimated that the average crust shortening in the Daliangshan tectonic zone is 10.9 ± 1.6 km, with a shortening rate of 17.8 ± 2.2% using the method of balanced cross-sections. The crust shortening from folding occurred mainly in the Miocene and the Pliocene periods, lasting no more than 8.6 Ma. Based on this, a crust shortening velocity of 1.3 ± 0.2 mm/a can be estimated. Compared with the left offset along the Daliangshan fault zone, it is recognized that crust shortening by folding plays an important part in transferring crustal deformation southeastward along the Xianshulhe-Xiaojiang fault system. 展开更多
关键词 Daliangshan tectonic zone Crust shortening Tectonic deformation Qinghai-Xizang (Tibet) Plateau
下载PDF
Study of Paleoearthquakes by Excavation of Grouped Trenches on the Zemuhe Fault in Daqingliangzi,Xichang,Sichuan
8
作者 Tian Qinjian Ren Zhikun Zhang Junlong 《Earthquake Research in China》 2009年第1期56-67,共12页
Uncertainties are common in the dating of paleoearthquakes.To improve the credibility of the dating of paleoearthquakes,analysis was done on fault activity,sedimentary environment and seismo-geomorphology to investiga... Uncertainties are common in the dating of paleoearthquakes.To improve the credibility of the dating of paleoearthquakes,analysis was done on fault activity,sedimentary environment and seismo-geomorphology to investigate paleoearthquakes along the Zemuhe active fault zone.Grouped trenches were excavated near Daqingliangzi,which revealed three palaeoearthquake events aged 160a,3100a and 5500a~8900a,respectively,including recurrence intervals of about 3000a.Sedimentary processes related to strike-slip fault type earthquakes were discussed,and a sedimentary model was put forward for strike-slip faults at hillsides where drumlin and reverse scarp developed. 展开更多
关键词 Palaeoearthquake Grouped trenches Micro-geomorphology Zemuhe River sedimentary model
下载PDF
Activity of the Lenglongling fault system and seismotectonics of the 2016 MS6.4 Menyuan earthquake 被引量:20
9
作者 GUO Peng HAN ZhuJun +3 位作者 AN YanFen JIANG WenLiang MAO ZeBin FENG Wei 《Science China Earth Sciences》 SCIE EI CAS CSCD 2017年第5期929-942,共14页
The MS6.4 Menyuan earthquake occurred on the northern side of the Lenglongling fault(LLLF) in the mid-western of the Qilian-Haiyuan fault zone on January 21, 2016. The earthquake epicenter was distant from the Minle-D... The MS6.4 Menyuan earthquake occurred on the northern side of the Lenglongling fault(LLLF) in the mid-western of the Qilian-Haiyuan fault zone on January 21, 2016. The earthquake epicenter was distant from the Minle-Damaying and Huangcheng-Shuangta faults, eastern of the Northern Qilian Shan fault zone. A near northwest-striking rupture plane intersects the two faults at a certain angle. The focal mechanism solution shows that this was a thrust-type earthquake, slightly different from the strike-slip movement with a thrust component of the LLLF. Field geological mapping, tectonic geomorphology analysis, trench excavation and 14 C dating reveal that(1) the LLLF has been obviously active since the Holocene, and may behave with characteristic slip behavior and produce M_W7.3–7.5 earthquakes;(2) the LLLF appears as a flower structure in terms of structure style, and dips NNE at a steep angle; and(3) the most recent earthquake event occurred after 1815–1065 a BP. An associated fault, the Northern Lenglongling fault(NLLLF), is located at the northwestern end of the LLLF. Consequently, the NLLLF was continually subject to tectonic pushing effects from the left-lateral shear at the end of the LLLF, and, accordingly, it bent and rotated outward tectonically.Subsequently, the fault deviated from the dominant rupture azimuth and activity weakened. In the late Quaternary, it behaved as a thrust fault with no obvious deformation at the surface. This is indicated by the arc shape, with a micro-protrusion northeastward,and no geologic or geomorphic signs of surface rupturing since the late Quaternary. However, such faults could still rupture at depth, producing moderate-strong earthquakes. The geometric and kinematic properties of the NLLLF are in good agreement with the occurrence and kinematic properties of nodal plane 2, and with the distribution characteristics of the aftershocks and seismic intensity. Therefore, the NLLLF is a more suitable seismogenic structure for the MS 6.4 Menyuan earthquake. In addition, the thrust movement of the NLLLF accommodates subsequent movement of the LLLF. During the historical evolution of the NLLLF,the LLLF and the NLLLF have affected the local topography through tectonic uplift. 展开更多
关键词 MS6 4 Mengyuan earthquake Seismogenic structure Tectonic environment Lenglongling fault Northern Lenglongling fault
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部