Support principles of NPR bolt/cable and control techniques of large-deformation disasters

Deep mining has been paid much more attention because of the depletion of shallow mining resources.Traditional bolts could be invalid to accommodate large displacement and deformation in geomaterials.Consequently, alternative support and reinforcement bolts need to be studied and their constitutive models also need to be developed to help understanding for the complex stress-strain responses of rock masses under loadings. The effect of Negative Poisson's Ratio(NPR) that is attributed to the swelling phenomenon along the lateral direction may appear in metal materials under tensional loadings. Thence NPR materials often have an advantage over NPR ones in mechanical behavior such as impact resistance, antishearing, and energy absorbed. From the characteristics of NPR materials, a series of bolt and cable supports with the effect of NPR and constant-resistance have been recently developed. We here firstly introduce the structural features of NPR support. Then the constitutive model of NPR support is presented and its corresponding equation of energy equilibrium. Its basic principle interacted on rock masses is further discussed. Finally, NPR cables are employed to support the slope of an open-pit mine. The applications show that NPR cables can ease failure within the slope and play an important role in predicting and providing early warning of slope failure, together with a monitoring system of slope stability.     

扎鲁特盆地的大地电磁电阻率结构成像初步结果（英文）

为揭露扎鲁特盆地构造格架和识别二叠纪林西组地层分布特征,笔者在扎鲁特盆地进行重力、磁力、大地电磁综合地球物理调查。在2012年,采集了5条北西向大地电磁剖面。经过数据处理、分析后,反演后电阻率断面揭露了断层带和林西组分布特征。扎鲁特盆地西部边界被确定。发现了两个低阻带,推测它们可能是与页岩气有关的泥岩。这些工作将为扎鲁特盆地页岩气潜力评价提供依据。     

电感耦合等离子体质谱法测定铅锌矿中镓铟锗铊

稀散元素是铅锌矿石中重要的伴生元素,为了综合利用铅锌矿资源,在地质、选矿上经常要考查稀散元素镓、锗、铟、铊的含量。研究了利用电感耦合等离子体质谱法测定铅锌矿中镓、铟、锗、铊4种稀散元素,选取了最佳仪器分析条件,通过在线加入内标校正基体效应和接口效应,检出限分别为0.02μg·g-1、0.01μg·g-1、0.03μg·g-1和0.05μg·g-1,相对标准偏差(RSD)为0.85%~2.84%,回收率在93.3%~102.3%之间,明显优于其他分析方法。该方法样品前处理简便、快捷,测定结果准确,令人满意。     

电感耦合等离子体质谱法测定土壤中砷的含量

利用电感耦合等离子体质谱法（ICP—MS）测定土壤中砷的含量。样品经过微波消解,在线加入内标校正基体效应,通过修正方程校正质量数干扰。测定砷元素校正曲线的相关系数0．9999,检出限0．01mg／kg,样品分析结果的变异系数为1．6％～2．4％（n=6）,加标回收率在84．0％-96．8％。同时采用国家标准方法氢化物-原子荧光光度法验证了方法的准确度,两种方法结果无显著差异。实验结果表明,该方法具有简单、快速、检出限低等特点,可用于土壤中砷含量的测定和监控。     

阜新盆地白垩系阜新组煤层气系统

运用非常规含油气系统的理论和方法研究阜新盆地煤层气系统地质特征。阜新组孙家湾煤层组、中间煤层组和太平煤层组是煤层气的生储层。阜新组上部砂质泥岩、泥质粉砂岩、粉砂岩为阜新组煤层气的盖层，盖层条件中等。上覆岩层是阜新组上部及孙家湾组。阜新组煤层的第一次生气高峰出现在孙家湾期末，此时镜质体反射率最大达到0．67％；后来喜马拉雅期辉绿岩的侵入导致煤层到达第二次生气高峰，在靠近岩浆侵入位置的局部地区镜质体反射率最大达到4．95％；另外，地表降水下渗带入细菌导致煤层产生大量次生生物气，而后进入煤层气保存期。煤层气系统的关键时刻是古近纪晚期。阜新组煤层气系统的特征表明，盆地阜新组煤层气具备进一步勘探开发的前景。图5表3参37     

沂水县炉山白云岩矿床地质特征及找矿标志

炉山矿区白云岩矿是以白云石为主的碳酸盐岩,是碳酸钙和碳酸镁的复盐岩石。本文通过分析成矿地质背景,在总结矿床地质特征的基础上,提出炉山白云岩矿床的成因类型属于海相沉积型,明确了三山子组层状白云岩出露地段是直接找矿标志,对鲁南地区找矿具有一定的指导作用。     

内蒙某铜钼矿石选矿试验研究

内蒙某铜钼矿石中金属矿物以为黄铁矿为主,其次为黄铜矿和辉钼矿等。辉钼矿粒度细小,各矿物共生关系密切而复杂,较难分离。采用阶段磨矿的混合浮选,混合精矿钼、铜、硫分离浮选工艺流程对该矿石进行选矿试验,获得了钼品位和钼回收率为46.30%和74.66%的钼精矿、铜品位和铜回收率为23.50%和70.16%的铜精矿以及硫品位和硫回收率为35.60%和79.55%的硫精矿。     

Non-conservative beating in sliding friction affected systems: transient amplification of vibrational energy and a technique to determine optimal initial conditions

Systems with friction are non-conservative as a consequence of the fundamental character of friction as a physical phenomenon: usually friction is associated with dissipative effects, but sometimes also with self-excitation. The present paper deals with the effect that sliding friction has on beating phenomena, which are very common in multidimensional systems with imperfect symmetries. It turns out that sliding friction has a significant influence on the energy budget of beating states, it may even lead to substantial transient amplification of the total vibrational energy. After describing the phenomenon a technique is provided to determine the initial conditions leading to optimal transient amplification of vibrational energy in sliding friction affected beating oscillations. Also intuitive as well as formal explanations for the effect's mechanism are given.     

内蒙古赤峰红山地区水系沉积物异常评价及找矿方向

为进一步指导内蒙古赤峰红山地区找矿,在1∶5万水系沉积物测量成果的基础上,利用GeoIPAS软件对研究区地球化学参数进行计算,分析了水系沉积物地球化学特征,综合研究区成矿地质特征,共圈出7处综合异常。对HS-5综合异常进行了异常查证,发现1条石英脉具有金矿化显示,表明水系沉积物测量在研究区的找矿中具有较好的应用效果,尤其是在金的找矿应用上。在综合异常分析和查证的基础上,结合区内的矿产分布特征、地球化学异常特征、地质特征及区域成矿地质条件,共圈出成矿远景区3处,即郎郡哈拉金铜成矿远景区、三间房铜铅锌银成矿远景区和哈日乌拉金锌银铜成矿远景区。