Boom Box 3爆炸机独立激发新模式应用开发与测试

随着国内外节点仪的应用,采用全节点仪采集的项目越来越多,有线地震仪的井炮激发方式已经不能完全适用于全节点采集系统,因此,针对全节点采集项目,以“去有线采集系统和无线电台通讯网络”为核心思路,开发出基于Boom Box 3爆炸机的独立激发新模式。本文通过对独立激发新模式的研发思路、放炮操作流程、炮后信息下载以及测试等各方面进行了详细介绍,最后,对基于Boom Box 3爆炸机独立激发新模式的优点进行了分析。

Boom Box3爆炸机独立激发模式简介及应用

Boom Box3爆炸机独立激发模式是一种全新理念的井炮高效采集模式,它基于GPS进行授时定位,基于WiFi-HTML技术进行参数设置和炮后信息处理,基于“时间槽”隔离技术进行自主激发,在复杂地形施工条件下,能够有效提高地震采集效率。本文介绍了Boom Box3爆炸机,对Boom Box3独立激发模式的原理、特点进行了分析,通过Boom Box3独立激发模式测试、应用实例及效果分析,认为该技术有助于提高南方山地和黄土塬地区全节点采集项目的施工效率,降低施工成本。

自走式喷杆喷雾机喷雾沉积特性试验研究

为了探究各因素对喷杆喷雾机喷雾沉积的影响规律,进一步提高自走式喷杆喷雾机的作业效率,使用Box-Behnken响应面法,分析并得到前进速度v、工作高度h和喷雾压力p等影响因素与喷雾沉积特性的数学模型,根据回归分析结果得出各影响因素对喷雾沉积特性的影响程度以及喷雾机最佳工作参数.结果表明:前进速度、工作高度和喷雾压力均对喷雾沉积特性有显著影响,影响程度按因素排序由大到小为喷雾压力,工作高度,前进速度.单位面积雾滴沉积量均值与前进速度和喷头工作高度成负相关,与喷雾压力成正相关.沉积量变异系数与喷雾压力成负相关,与前进速度成正相关,与工作高度的增加呈先减小后增大的趋势,这说明在工作高度一定的情况下,增大喷雾压力或者减小前进速度可以有效提高喷雾机的雾滴沉积均匀性.

Boom Clay蠕变特性研究

Boom Clay为比利时第三纪细密黏土沉积物,其力学性质十分复杂,尤其是其显著的蠕变特性更需进行广泛的试验和深入的理论研究。通过室内固结和三轴蠕变试验,研究不同应力水平下的蠕变特性;建立以不可恢复应变为变量的不显含时间的分离型屈服面蠕变本构模型,避免了传统显含时间项的蠕变模型在土体经历加、卸载过程等复杂工况的实际计算中,具体蠕变时间确定的难题。将所建新型蠕变模型在ABAQUS软件中实现二次开发,并通过不同蠕变参数下的基本性能检验和蠕变试验的模拟,验证了所建模型的正确性和所编程序的可靠性。

Boom黏土热-力耦合弹塑性损伤模型研究

黏土的热-力耦合本构模型研究在许多工程领域,尤其是核废料地下处置方面有着十分重要的工程意义。根据Boom黏土的在不同温度下的三轴与固结试验的结果,综合考虑了温度对黏土的强度与弹性模量的影响,在Drucker-Prager(简称D-P)帽盖模型的基础上,引入了硬化方程和热损伤、力学损伤的演化方程,建立了适用于黏土的热-力耦合弹塑性损伤本构模型。将模型在ABAQUS中进行了二次开发,根据试验结果反演得到了Boom黏土的模型参数。利用所建立的本构模型,对比利时HADES试验室中的ATLAS III现场试验进行了数值仿真,计算结果表明,模型的计算结果与现场实测的结果能较好地吻合,证明了模型的合理性。

Studies on Distribution and Chemical Characteristics of Copper in Cells of Setcreasea purpurea Boom

[Objective] The aim of this study was to reveal the mechanism of Cu2+ hyper-accumulator in Setcreasea purpurea Boom from the angle of distribution characteristics and binding form of Cu2+ in tissue cells.[Method]The distribution characteristics of Cu2+ in subcells of Setcreasea purpurea Boom was studied by the technique of differential centrifugation,and the binding form of Cu2+ in roots and leaves of Setcreasea purpurea Boom was also investigated by the sequential chemical extraction method and the enzymolysis method.[Result]Cu2+ in roots mainly distributed in the cell wall which is accounting for one third of the Total Cu2+ in roots,while Cu2+ in leaves mainly distributed in the chloroplast which is accounting for a quarter to the Total Cu2+ in leaves.Under the high concentration of Cu2+ or the extended treatment duration,the translocation of Cu2+ in root cells into the cell wall increased but the translocation of Cu2+ in root cells into the plastid decreased,while the translocation of Cu2+ in leaf cells into the chloroplast increased but the translocation of Cu2+ in leaf cells into the cell wall decreased.Cu2+ in leaves was mainly combined with amino acid,small molecular polymeric pigments,protein and polysaccharide,while Cu2+ in roots was mainly combined with cell wall substances such as cellulose and membrane-bound protein.[Conclusion]The distribution characteristics and binding form of Cu2+ in cells is possibly one of the dominant mechanisms for Cu2+ hyper-accumulator in Setcreasea purpurea Boom.

Specific Protein Properties of Setcreasea pupurea Boom under Copper Stress

[Objective] This study was to investigate the expression of the specific protein in Setcreasea purpurea Boom under copper stress, with the aim to clarify the copper tolerance mechanism of S. purpurea. [Method] Methods of water culture, elec- trophoresis and chromatography were used to analyze the molecular weight of the specific protein in the copper hyperaccumulator S. purpurea, as well as its expression time and the minimum copper concentration for the expression. And the specific protein was isolated and purified. [Result] Under copper stress, the minimum concentra- tion of copper to induce the expression of the specific protein from S. purpurea was 50 umol/L, and the expression time of the protein was in the 4th week with the molecular weight of 89.4 kDa. [Conclusion] The results show that the copper tolerance of S. purpurea is closely related with the expression of the specific protein.

BOOMBOX编译码器常见故障的排除

BOOMBOX编译码器是新一代数字式地震遥爆系统。该系统功能较强，广泛应用于各种地震勘探仪器系统中。介绍了该系统在使用中遇到的常见故障，并给出了较为详细的维修方法。

BOOM BOX遥爆系统电路分析

BOOM BOX遥爆系统是新一代数字式遥爆系统。该系统功能较强,广泛应用于各种地震勘探仪器系统中。对该系统电路进行了较为详尽的分析,有助于进一步解决其在生产施工中出现的问题,为野外生产提供技术保障打下了良好的基础。

Analysis of Gene Differential Expression of Setcreasea purpurea Boom under Copper Stress by cDNA-AFLP

[Objective] The aim was to explore biological function of related genes in Setcreasea purpurea Boom under copper stress and to study the mechanism of its copper-resistance from standpoint of molecular biology in order to solve the problem of copper pollution. [Method] Setcreasea purpurea Boom was taken as experimental material which enjoys enrichment ability to cupric ion. About 90 fragments of differential expression were obtained by cDNA-AFLP and silver staining technique, among which, 17 fragments were amplified. After purification and identification, sequences of 6 differential fragments were got and used for BLAST X contrast. [Result] Six differential expressed fragments may play roles when Setcreasea purpurea Boom was under copper stress. The homology achieved 49% between differential sequences of E5MG-3 and of Arabidopsis thaliana mRNA （accession numbers： AAM62956.1）, homology was 53% between sequences of E4MB-2 and Solanum tuberosum mRNA （accession numbers： A5A717.1）, and 65% between sequences of E6MG-1 and Colocasia esculenta （L.） Schott mRNA （accession numbers： AAO62313.1）. It can be concluded that differential expressed genes are related to cell signaling, antioxidation, metabolism and protein modification. [Conclusion] The study has laid foundation for further exploration of regulatory network about response of Setcreasea purpurea Boom to copper stress.

3WSH-500型喷雾机喷杆高度调控系统设计与试验

针对地面起伏造成喷雾机喷杆高度波动的问题,以永佳3WSH-500型喷雾机为试验平台,电动推杆为喷杆高度调节驱动部件,采用滞环控制原理,设计了基于超声探测的喷杆高度调控系统。首先,对3种路面(水泥地路面、田间未耕路面和田间翻耕路面)下超声波传感器反馈电流信号与喷杆高度的探测曲线进行标定试验,获得3种路面喷杆高度监测曲线。其次,开展喷杆高度调节静态试验,通过改变喷杆高度,获得了静态调节下喷杆高度调节响应曲线,确定静态最优滞环值为10 mm。开展了3种路面下不同车速对喷杆高度调节的性能试验及性能对照试验,根据喷杆高度趋于稳态时的振颤范围,确定动态最优滞环值为50 mm,喷杆高度设定为1 000 mm,车速为2.5、5.0、6.0、8.0 km/h。试验结果表明:车速对系统喷杆高度的调控性能影响较小,而地面起伏对系统喷杆高度调控稳定性具有显著影响,以动态性能对照试验作为对照组,田间未耕地路面的控制合格率由83%~95%提升至93%~97%,在地形波动较大的田间翻耕路面,喷杆高度控制合格率由2%~16%提升至72%~87%。该研究可为喷杆高度调控性能提升提供技术参考。

增强现实BOOM系统设计

在增强现实系统中,头盔显示器的显示效果和重量之间一直存在矛盾。针对这个问题,结合在研的光学透视式头盔显示系统,设计了一个增强现实BOOM系统。针对设计的BOOM系统,进行了机械跟踪算法的推导,并进行了理论验证。该系统较好的解决了头盔显示器过重给使用者带来的不便,并且有较高注册精度和速度。

基于HHT的CBOOM浅剖信号分析

通过分析C-BOOM浅剖信号的时域和频域特点,观察到其信号频带较宽,和环境噪声频带重叠,而且信号重复性较差,使得无法使用傅立叶变换等传统方法对C-BOOM浅剖信号进行准确的频域参数估计和滤波。基于HHT(Hilbert-Huang Transform)方法对C-BOOM浅剖信号进行分析,通过分析筛选由EEMD(Ensemble Empiri-cal Mode Decomposition)分解得到的信号分量确定了信号频带和中心频率等频域参数,在未知信号频带的情况下完成了对信号的滤波,分离得到了C-BOOM浅剖的信号部分和环境噪声部分。通过比较分离得到的环境噪声成分和真实环境噪声的频谱,验证了信号分离方法是有效的。

BOOM BOX译码器激发能力研究与改进

BOOMBOX译码器在黄土塬地区施工中，采用多井组合激发时，由于激发网络电阻增大，致使拒爆、丢炮和丢失验证时断信号（confirmation time break，CTB）的现象频发，严重制约了地震生产。针对该译码器的激发能力问题，分别从点火电压、充电时间、点火电流和CTB产生信号原理等方面进行了详尽的分析研究，并通过电路改进和现场试验，找到了提高其激发能力的一种较为便捷的方法。通过现场使用，取得了较好效果。

BOOM BOX与GM338接口电路的改进

本文针对BOOM BOX系统在使用中存在的一些问题,对BOOM BOX与GM338电台接口电路进行了分析,找出了存在的问题,并对其接口进行了改进和优化。

车内轰鸣声反相位抵消方法研究及应用

乘用车普遍存在路面激励产生车内轰鸣声的问题。车身尾门、前风挡和顶棚等大板件的局部模态将振动放大并与车内声腔耦合产生2050 Hz的轰鸣声。尾门在此频率区间存在多阶模态,振幅较大,但因造型和空间限制一般难以通过结构优化彻底抑制振动,安装吸振器是常用的措施。以某电动车型路噪40 Hz频率带的轰鸣声为背景,建立车内声腔与尾门、前风挡的参数模型,求解声固耦合方程,得到车内声场在耦合频率处的振型。分析前风挡不同相位角对车内前排声压的影响,发现前风挡相位为180◦时,车内前排的入射声波与反射声波相互抵消,总声压最小。基于实车对风挡上横梁进行结构弱化,将一阶模态频率从48 Hz降低到38 Hz,其振动传递函数在轰鸣声频率段的相位降低120◦,与尾门振动同相,车内轰鸣声从55 dB(A)降低到48 dB(A)。车身关键板件相位匹配降低轰鸣声的方法对噪声控制和轻量化设计具有参考意义。

BOOM BOX中继器在地震勘探中的应用

介绍了新一代放炮系统——BOOM BOX的性能优势，其具备的中继功能有效地解决了408UL仪器在山区、沙漠等地形复杂地区实现无线放炮的问题。与408UL有线放炮系统相比，应用BOOM BOX的中继器进行无线放炮，更加灵活、方便，生产效率更高。讨论了BOOM BOX与408UL的联机问题，给出了应用中继技术进行无线放炮时BOOM BOX的参数设置方法，并对它的无线中继原理进行了深入的分析。这对于正确应用BOOM BOX系统的该项功能具有积极的意义。

Effects of temperature and thermally-induced microstructure change on hydraulic conductivity of Boom Clay

Boom Clay is one of the potential host rocks for deep geological disposal of high-level radioactive nuclear waste in Belgium. In order to investigate the mechanism of hydraulic conductivity variation under complex thermo-mechanical coupling conditions and to better understand the thermo-hydromechanical(THM) coupling behaviour of Boom Clay, a series of permeability tests using temperaturecontrolled triaxial cell has been carried out on the Boom Clay samples taken from Belgian underground research laboratory(URL) HADES. Due to its sedimentary nature, Boom Clay presents acrossanisotropy with respect to its sub-horizontal bedding plane. Direct measurements of the vertical(Kv)and horizontal(Kh)hydraulic conductivities show that the hydraulic conductivity at 80℃ is about 2.4 times larger than that at room temperature(23℃), and the hydraulic conductivity variation with temperature is basically reversible during heatingecooling cycle. The anisotropic property of Boom Clay is studied by scanning electron microscope(SEM) tests, which highlight the transversely isotropic characteristics of intact Boom Clay. It is shown that the sub-horizontal bedding feature accounts for the horizontal permeability higher than the vertical one. The measured increment in hydraulic conductivity with temperature is lower than the calculated one when merely considering the changes in water kinematic viscosity and density with temperature. The nuclear magnetic resonance(NMR) tests have also been carried out to investigate the impact of microstructure variation on the THM properties of clay. The results show that heating under unconstrained boundary condition will produce larger size of pores and weaken the microstructure. The discrepancy between the hydraulic conductivity experimentally measured and predicted(considering water viscosity and density changes with temperature) can be attributed to the microstructural weakening effect on the thermal volume change behaviour of Boom Clay. Based on the experimental results, a hydraulic conductivity evolution model is proposed and then implemented in ABAQUS. Three-dimensional(3D) numerical simulation of the admissible thermal loading for argillaceous storage(ATLAS) Ⅲ in situ heating test has been conducted subsequently, and the numerical results are in good agreement with field measurements.

BoomBoxAXIM软件在DELL掌上电脑中的安装及备份

Boom Box放炮系统的系统参数是通过DELL掌上电脑来修改的,一旦掌上电脑供电中断(掉电),存放其中的BoomBoxAXIM软件就会丢失,致使掌上电脑无法使用。本文详细介绍了BoomBoxAXIM软件在DELL掌上电脑中的安装、备份及掉电时的恢复方法。

New Knowledge-based Genetic Algorithm for Excavator Boom Structural Optimization

Due to the insufficiency of utilizing knowledge to guide the complex optimal searching, existing genetic algorithms fail to effectively solve excavator boom structural optimization problem. To improve the optimization efficiency and quality, a new knowledge-based real-coded genetic algorithm is proposed. A dual evolution mechanism combining knowledge evolution with genetic algorithm is established to extract, handle and utilize the shallow and deep implicit constraint knowledge to guide the optimal searching of genetic algorithm circularly. Based on this dual evolution mechanism, knowledge evolution and population evolution can be connected by knowledge influence operators to improve the conflgurability of knowledge and genetic operators. Then, the new knowledge-based selection operator, crossover operator and mutation operator are proposed to integrate the optimal process knowledge and domain culture to guide the excavator boom structural optimization. Eight kinds of testing algorithms, which include different genetic operators, arc taken as examples to solve the structural optimization of a medium-sized excavator boom. By comparing the results of optimization, it is shown that the algorithm including all the new knowledge-based genetic operators can more remarkably improve the evolutionary rate and searching ability than other testing algorithms, which demonstrates the effectiveness of knowledge for guiding optimal searching. The proposed knowledge-based genetic algorithm by combining multi-level knowledge evolution with numerical optimization provides a new effective method for solving the complex engineering optimization problem.