A New Approach to Determining Multistage Hydraulic Fracture Size by Well Production Data

The simplified two-zone model to describe fluid flow in steady-state horizontal holes with multistage hydraulic fracturing is proposed, and the analytical solution in order to calculate sizes of hydrofractures is presented. The new procedure to determine size of multistage hydrofractures in horizontal holes is tested using field data on China deposits. The calculation results prove the efficiency of the procedure in the determination of steady-state conditions. The procedure can be used in optimization of hydraulic fracturing.     

根据静态沉降—沉积曲线确定浓缩机面积方法的研究

本文在重力沉降－沉积模型的基础上，推导出计算连续浓缩机底流浓度和比浓缩面积的公式，提出了一种设计浓缩机计算底流浓度和浓缩面积的新方法－静态沉降－沉积曲线法。此法与Ｔ－Ｆ法和Ｏｌｔｍａｎｎ法进行比较，得到了满意的结果。     

汽车制动器摩擦性能惯性台架测试新方法

SAE J2681推荐草案是一种对制动器摩擦性能评价的惯性试验方法，拟取代以前单纯依靠拖动方式的标准。本文对该方法作了详细介绍，为我国现今汽车制动器摩擦性能评价的测试方法提供一个最新的参考和借鉴。以促进本行业测试水平的提高。     

生态行政视角下完善我国海洋生态补偿法的思考

生态行政是21世纪行政法的新理念。推行生态法治行政理念、构建生态型政府,是当代政府改革发展的新目标。康菲石油案这一生态环境的热点事件,引发了对当前我国海洋生态补偿法律制度现状的反思。我国海洋生态补偿的行政立法层次较低,相关法律资源缺乏系统性整合与疏理,加之程序法的部分缺位,救济手段与救济程序不完备以及行政执法主体的不明确和问责制的缺乏等问题严重制约了我国海洋生态补偿的实践。为此,在生态行政的视角下进一步完善我国海洋生态补偿的实体法、程序法,并建立海洋生态补偿的监管机制,明确执法主体和严格问责制,这些措施将有助于规范和推动我国海洋生态补偿的实践。     

大直径空心桩技术现状及环形孔钻具的研究

概述了大直径空心桩施工技术的发展现状 ,在调研分析的基础上 ,借鉴地下连续墙施工技术 ,提出了一种新型的环形孔钻具 ,并对其结构、工作原理、应用条件及施工步骤等进行了阐述     

安庆铜矿选铜流程试验研究

通过小型试验和工业试验,将安庆铜矿原设计的半优先混合分离浮选流程改造成全优先浮选流程,选铜回收率由91.12%提高到92.74%,超过原设计指标,取得了显著的经济效益。     

Evaluation methodology for structural complexity of ore deposits as development targets

The authors offer a new methodology for evaluating complexity of geological structure of ore deposits and base the determination procedure of criteria for comparing effects exerted by geological structure constituents on a chosen geotechnology.     

关于国土规划若干问题的思考

新一轮的国土规划是实施可持续发展战略、加快现代化进程以及指导和协调各种空间规划的需要。本文就国土总体规划编制的分级、程序、协调、期限、组织和法律有关规定等方面提出新的思路     

砂岩质煤矸石制备外墙泡沫保温材料

为寻求外墙泡沫保温材料的原料来源,以砂岩质煤矸石和抛光砖泥为主要原料,通过优化颗粒级配、陈化增塑、添加无机增塑剂等措施,探索提高原料可塑性、生产合格制品的工艺技术。通过抛光砖泥和添加剂掺量的不同,分析掺入料对制品体积密度、抗压强度、导热系数的影响,设计正交试验确定适宜的添加剂含量;以对烧结制度影响较大的预热温度、预热时间、烧结温度和保温时间为4个因素设计正交试验,确定烧制保温材料的最佳烧结制度。该研究结果为综合利用工业废料制备新型建材提供了新的途径。     

Cluster location procedure for technogeneous seismic events in deep mines

The review of the current underground seismic monitoring and location methods of seismic events is followed with presentation of a new, cluster location procedure for mining-generated (technogeneous) seismic events, including isolation of areas where waves run to sensor at approximately equal velocities, cyclic calibrating blasting and then cluster location of seismic events, occurred within the isolated areas, by iterative procedure. The offered method is illustrated in terms of an ore massif in the Oktyabrsky Mine, Norilsk ore deposit. The method showed up to be able to appreciably adjust vertical coordinates of seismic events and to determine the associated tectonic structures.     

铲斗设计方法探讨

原设计方法将铲斗的回转半径视作基本参数,铲斗尺寸通过多个系数计算而得,这样设计计算有一些弊病。新设计方法以能反应铲斗形状的参数来设计铲斗几何形状,该设计方法能直观反映基本参数对铲斗尺寸的影响,也更容易利用微机进行辅助设计。     

GPS RTK技术在柬埔寨物探找矿中的应用

介绍GPS RTK技术的基本原理和工作流程,结合柬埔寨柏威夏省罗文真地区格高铁矿磁法找矿的工程实例,通过和常规测量方法的比较,验证其在物探找矿中测量精度的可靠性和适用性。     

Procedure of joint calculation of temperature and ventilation mode in uninterrupted mining in permafrost zone

The authors have developed a procedure for forecasting air flow, air and rock temperatures as well as thawing halo in all roadways of a mine, taking into account stage-wise introduction of new mine workings into the mine ventilation network, or backfilling of the mined-out stopes.     

Ecological evaluation of the production-induced change in the lithosphere

In focus are the conditions and features of a new ecological object of the lithosphere—the industrially changed interior of the Earth. The authors hypothesize on formation of geophysical ecotone and present the procedure for evaluating ecological indicators of the ecotone as applied to underground mineral mining.     

Measuring-computing complex “Gidrorazryv”

The article describes novelties developed for the measuring-computing complex “Gidrorazryv”: improved design of the two-packer probe, data translation and transmission device on the basis of unified modules, new programs for the experimental procedure supervision and data processing.     

用VB程序求解岩石的压入硬度与塑性系数

介绍了一种用VB程序求解岩石的压入硬度和塑性系数的方法。压力和位移的值通过常规的岩石压入硬度计测得。该方法免去了传统人工求解的繁杂过程 ,精度高 ,结果可靠。     

Geomechanical Aspects of Problem on Open Mining of Deposits

The procedure for determining the slope angles of the pit edges and new approaches to their stability control with regard for the initial tectonic and secondary stresses in the rock mass are considered. Using satellite geodesy, the instrumental investigations into strains of pit edges and adjacent territories are realized.     

基于零序电流有功分量的接地选线原理分析及算法实现

详细分析补偿系统发生单相接地时零序电流的特点,提出利用零序电流有功分量进行接地选线的方法,并提出利用递推DFT算法实现此方法的原理及步骤。     

矿井提升机安装中的新工艺新技术

介绍了提升机安装中采用预埋垫板、导向轮整体吊装等新工艺、新技术，不但提高了安装质量，简化了安装工序，而且还提高了施工效率。     

浅谈城市勘测信息系统的建立

本文根据城市勘测信息系统的特点，介绍了城市勘测信息系统建立的一般过程，以及系统建立过程中要注意的一些问题。首先要做好用户调查，确定系统的应用对象，一是满足城市勘测部门生产及新技术应用的需要，二是为城市规划、建设、管理提供服务；其次是围绕用户的需要，进行系统分析，定义好系统数据库，并为其他部门的应用留有开发余地；最后，介绍了系统需要开发的应用模块