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| 1 | 蹬空条件提高回采上限开采设计与工程应用显示文摘为延长矿井服务年限,多回收煤炭资源,部分煤矿进行了卸压开采后(蹬空)提高回采上限开采。针对蹬空提高回采上限开采过程中工作面设计、矿压控制、安全开采等方面存在的问题,结合张集矿8煤和11煤开采地质和工程条件,采用理论计算和FLAC3D数值模拟试验,获得了蹬空与非蹬空开采覆岩运移和支承压力特征,揭示了二次开采采动应力演化机理。基于11煤1724(1)工作面蹬空及提高回采上限开采的可行性评估分析,提出并实施了提高回采上限开采技术方案。工程应用表明:蹬空条件提高回采上限开采是可行的,为类似条件工作面开采设计提供了参考。 | 杨科 高兴 孔祥勇 | 2017 | 地下空间与工程学报2017，13，2： | 7 |
| 2 | 煤岩瓦斯动力灾害主控地质体理论及地质作用机理显示文摘为研究煤岩瓦斯动力灾害地质作用机理,初次提出了控制煤岩瓦斯动力灾害的'主控地质体'的概念,并进行了定义及分类,采用理论分析、实验室实验、现场实测及现场考察等手段进行了相关研究。研究认为:煤系地层区域沉积体系、地层层序位置决定着煤层厚度、顶底板岩性及粒度、煤层赋存状况等,越靠近海(湖)侵体系域最大海(湖)泛面位置,煤层瓦斯赋存量越大(顶底板石灰岩煤层除外)、煤层煤岩瓦斯动力灾害危险性越大,解释了煤层群中不同煤层煤岩瓦斯动力灾害程度差异;煤岩瓦斯动力灾害地质作用机理为地层沉积埋藏作用、地质构造作用、热作用、生烃作用等时空配置控制着煤层的改造程度、瓦斯的生成、保存及逸散程度,以及自重应力、构造应力的分布情况,进而控制煤岩瓦斯动力灾害区域分布及灾害程度;初步建立了主控地质体理论、分析方法及判识依据。研究成果在水城矿区进行了应用,验证了该方法的合理性和适用性。 | 董国伟 胡千庭 | 2017 | 西安科技大学学报2017，37，1： | 3 |
| 3 | 接触面积对天然软骨摩擦行为的影响显示文摘采用UMT-2型微观多功能测试系统,在试验环境为牛血清,法向加载应力1 MPa,在3种不同的接触面积下分别测定了天然关节软骨摩擦副的接触位移和摩擦因数。结果表明,接触位移是由软骨变形量和波动位移组成,软骨变形量与时间成非线性增加,波动位移与时间呈周期而非线性变化;接触面积影响软骨摩擦副的摩擦行为,与摩擦因数和波动位移呈负相关;较大的接触面积产生较低的摩擦因数和波动位移。 | 倪自丰 钱善华 罗勇 | 2012 | 润滑与密封2012，37，7： | 3 |
| 4 | Mechanism of stepwise tectonic control on gas occurrence: A study in North China显示文摘To gain an understanding of gas occurrence, distribution is the fundamental basis for preventing gas disasters. Presently, how tectonic structures control gas occurrence remains problematic. This study proposes the theory and elucidates the mechanism of stepwise tectonic control on gas occurrence according to the characteristics of gas occurrence and the patterns of gas distribution in coal mines in North China. On the one hand, tectonic compression and shearing lead to stress concentration and thus deform the coal and reduce the coal seam permeability, further contributing to gas preservation. On the other hand, tectonic extension and rifting lead to stress release and thus improve the coal seam permeability, further contributing to gas emission. Therefore, the distribution zones of tectonic compression, ubiquitous coal deformation, and gas accumulation have been step-wisely revealed, and the coal-gas outburst proneness zones are finally identified. The proposed theory of step-wise tectonic control on gas occurrence is of practical significance for gas prediction and control. | Jia Tianrang Zhang Zimin Wei Guoying Tang Chun'an | 2015 | International Journal of Mining Science and Technology2015，25，4： | 1 |
| 5 | 两种润滑介质下关节软骨摩擦行为的对比研究显示文摘通过对两种润滑介质下关节软骨摩擦行为的对比研究,探讨软骨摩擦行为的影响因素.以牛膝关节软骨为摩擦副,以生理盐水和50%小牛血清溶液为润滑介质,在UMT-2试验机上分别测定软骨摩擦副的接触变形和摩擦系数,以及两种润滑介质在软骨表面的接触角.结果表明:滑动时接触变形是由软骨变形量和波动变形组成,软骨变形量与时间呈非线性增加,波动变形与时间呈周期非线性变化;软骨表面轮廓对波动变形和摩擦系数有着显著的影响;生理盐水的接触角低于小牛血清溶液的接触角,生理盐水的软骨变形量和摩擦系数均略高于小牛血清溶液的变形量和摩擦系数,其差异可能是边界润滑的效果. | 钱善华 刘利国 倪自丰 葛世荣 | 2013 | 摩擦学学报2013，33，5： | 1 |
| 6 | Geological division of gas in the Pingdingshan mine area based on its tectonic dynamics characteristics显示文摘In this paper,we used tectonic dynamics theories to study the tectonic evolution characteristics of the Pingdingshan mine area,and analyzed the impact of tectonic progressive control on gas occurrence.The study results are as follows:the Pingdingshan mine area has been mainly controlled by multiple squeezing and shearing actions of the Qinling orogenic belt since early and middle Yanshan,forming the tectonic control characteristics of master control in two directions,namely NWW trending and NNE trending;the NWW trending structure is dominated by squeezing and shearing,while the NNE trending structure is dominated by tension.Progressively controlled by the structure,the gas occurrence presents partition and zonation,i.e.compared with the western structure,the eastern NWW-NW trending structure of the mine area is more highly developed,resulting in the mine area gas occurrence distribution characteristics are distinct in the east while indistinct in the west.Based on this,the mine area can be divided into the following two geological dynamic areas:the western half of mine area,namely the Guodishan fault control area,where the NW-SE trending synchronous tension action suffered by the northeast side(footwall) is relatively strong,and compared with the southwest side(hanging wall),its coal and gas outburst seriousness is weak;and the eastern half of mine area,namely the NWW-NW thrust nappe fracture fold control area,which is a serious area of coal and gas outburst,in particular the axial area of the Likou syncline is the intersection compound and combination position of the NW and NE trending structures,a tectonic concentrated area,and the gas pressure and content here are the largest. | Lei Dongji Li Hui Meng Hui | 2015 | International Journal of Mining Science and Technology2015，25，5： | 0 |
| 7 | Creep properties and a creep equation of delay outburst coal and its adjacent mudstone显示文摘The study of the creep properties of coal and its adjacent mudstone is very important for understanding the mechanism of delay outburst coal. The samples of delay outburst coal and its adjacent mudstone collected from Yongshanqiao mine were used to carry out triaxial creep tests. The influence of confining pressure and axial compression on the creep test was analyzed. An accelerated creep model was constructed in parallel with a nonlinear viscous component and plastic component. It is connected with the traditional Burges creep model in series. A creep model which can describe the nonlinear viscoelastic-plastic creep model of rock was established and the corresponding creep equation was derived.According to the results of the creep test, the related parameters of the equation were fitted. The results show that, under the same confining pressure, instantaneous creep strain, creep strain of deceleration phase and constant rate creep of the coal and its adjacent mudstone are increased with an increase in the deviatoric stress. But at the same axial pressure, all of the above decrease with an increase of confining pressure. The duration time of the deceleration creep phase increases with the increase in the deviatoric stress. The theoretical values of the creep equation are in good agreement with the experimental results. It indicates that the creep properties of the delayed outburst coal and its adjacent mudstone can be well described by the creep model established in this paper. | Lu Haifeng Zhao Zhigen | 2016 | International Journal of Mining Science and Technology2016，26，6： | 0 |
| 8 | 球形摩擦副下天然关节软骨摩擦行为的试验研究显示文摘通过对球形摩擦副下关节软骨摩擦行为研究,揭示表面轮廓对软骨摩擦行为的影响。以陶瓷球与软骨为球形摩擦副,在UMT-2型微观多功能测试系统上分别测定两类轮廓组成的软骨摩擦副的接触位移和摩擦因数。结果表明,接触位移是由软骨变形量和波动位移组成,软骨变形量与时间成非线性增加,波动位移与时间呈周期而非线性变化;球对软骨的摩擦副有一个较高的启动摩擦因数;表面轮廓影响球形摩擦副的接触状态和摩擦行为,软骨试样的摩擦因数高于纯软骨层的摩擦因数。 | 钱善华 倪自丰 葛世荣 | 2013 | 润滑与密封2013，38，6： | 0 |
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