电缆输送过油管射孔工艺技术在玉门油田的应用

针对青西油田老井侧钻、加深及部分深井小井眼完井不能采用常规射孔器射孔现状,选用无枪身射孔工艺,解决了完井难题,探索出一套无枪身射孔器射孔的施工方法,提高了施工井的成功率,为今后实施该项工艺积累了经验。     

运用MATLAB对爆破震动数据的回归分析

结合工程实测数据，运用Matlab中的线性与非线性两种回归分析，对爆破震动中的萨道夫斯基经验公式的参数进行优化求值，在此基础上，新提出有高程差条件下的爆破震动公式具有一定的参考价值。     

糯扎渡水电站地下厂房岩石热物理性质和热工状态研究

糯扎渡水电站地下式大型厂房，深埋地下进深约1600m，厂房的通风空调系统利用隧洞降温的研究取得了详实可靠的实测资料，为优化通风空调设计参数提供了技术保证。优化设计结果使通风空调风量减少约30万m^3/h；减少空调制冷约1200kW；减少通风系统的使用开挖面积约500m^2；共计可节约投资约500万元。     

杯芳烃孔穴传输材料的合成及静电性能评价

设计并成功合成出一类新型的可用作有机光导体孔穴传输材料的以杯芳烃为母体的腙类衍生物，其分子含有4个电荷传输点，有利于进一步提高传输性能；制成有机光导体器件后测试其静电照相性能，可以满足有机光导体的使用要求。这将有助于促进电荷传输材料的制造开发。     

焦炉装煤烟尘治理及其方案的选择

介绍了几种高效的烟尘治理方法，针对各种方法中的优缺点，提出了在选择方案时应注意的问题，以供各厂设计参考。     

浅析常压与加压F1型浮阀塔结构设计

通过对碱洗塔分析，指出常、加压浮阀塔结构设计的不同。提出加压塔合理设计的方法。     

Corrosive fatigue of structures with dimple holes under spectrum loading

ABSTRACT Experimental investigation and life prediction are made for structures with straight holes and dimple holes in both laboratory ambient conditions and 3.5% NaCl solution under spectrum loading. With the aid of acoustic emission, label loading and fractography technique, the crack‐growth data are obtained in both environments. Stress‐intensity factors for the corner crack emanated from the dimple hole are evaluated by three‐dimensional (3D) finite element (FE) method. Life prediction of the tested structures is made by using the modified FASTRAN‐II code on the basis of corresponding fatigue crack‐growth rate curves. It is shown that once the initial defect size a₀ is determined by one set of test data, it can be used together with the 3D crack‐growth method in order to provide accurate life prediction in alternative structure and loading condition. By comparison, life prediction by the traditional local strain method is also made which is shown to be less reliable than the 3D crack‐growth method.     

深孔精加工中的自适应减振镗杆系统设计

针对深孔镗削精加工中高长径比镗杆存在较低的颤振稳定极限，导致容易发生颤振的问题，设计了一种自适应减振镗杆系统。通过调节O形环弹簧的轴向压缩，调谐附加质量阻尼减振器的固有频率，以最大化其动态刚度和适应大范围的长径比；利用电磁激振器和非接触式电容位移传感器自动测量镗杆的频响函数，并通过压缩O形环自适应调谐附加减振器的固有频率；最后，将镗杆频响函数的负实部最小化，以最大限度地提高无颤振切削深度。研究结果表明：安装减振器后镗杆频响函数的实部从-15.17μm/N缩小到-0.24μm/N,相当于动态刚度增大了63.2倍，且表面粗糙度得到明显改善。该系统能够覆盖相当宽的镗杆长径比范围，可适应各种实际安装需求。     

钙镁磷肥高炉灰渣的利用

目前，大多数钙镁磷肥企业对磷肥高炉产生的瓦斯灰均弃置不用，这不仅污染环境，而且浪费资源。本文对瓦斯灰的综合利用提出压砖入炉的合理化建议。     

Improved capacitance characteristics during electrochemical charging of carbon nanotubes modified with polyoxometallate monolayers

By modification of surfaces of multi-walled carbon nanotubes with ultra-thin monolayer-type films of phosphododecamolybdic acid, H₃PMo₁₂O₄₀, an electrode material with improved capacitance properties is produced. It is apparent from three distinct test experiments (based on cyclic voltammetry, galavanostatic charging-discharging and AC impedance) that capacitors utilizing H₃PMo₁₂O₄₀-modified carbon nanotubes are characterized by specific capacitances and energy densities on the levels of 40 F g⁻¹ and 1.3 Wh kg⁻¹, whereas the respective values for the systems built from bare carbon nanotubes are lower, 22 F g⁻¹ and 0.7 Wh kg⁻¹. It is reasonable to expect that fast and reversible multi-electron transfers of the Keggin-type H₃PMo₁₂O₄₀ account for the pseudocapacitance effect and significantly contribute to the observed overall capacitance.