数字地面模型在AUTO CAD环境中的建立及应用

介绍了用ＡＵＴＯ ＣＡＤ的Ｃ语言开发系统－－ＡＤＳ在ＡＵＴＯ ＣＡＤ环境下建立数字地面模型的过程，并以此为基础介绍了在ＡＵＴＯ ＣＡＤ环境下生成断面图和内插等值线的方法。     

机械CAD参数化绘图实现（C—AUTOCAD）

本文阐述了Ｃ语言与ＡＵＴＯＣＡＤ图形软件的接口技术，Ｃ－ＡＵＴＯＣＡＤ子程序集功能及参数化绘图的实现方法。     

利用DWG文件实现对AUTOCAD二次开发

在分析了几种常规的ＡＵＴＯＣＡＤ接口的优缺点，给出了ＡＵＴＯＣＡＤ图形文件ＤＷＧ的简要结构描述后，提出了一种专业ＣＡＤ软件通过使用自主图形平台，实现对ＡＵＴＯＣＡＤ二次开发的方法。     

综合CAD系统

本文讨论了以ＡＵＴＯＣＡＤ为核心，建立和其它相关软件如３Ｄ－ＳＴＵＤＩＯ、ＤＢＡＳＥⅢＰＬＵＳ、ＣＣＡＤ等的联系，形成功能增强的综合ＣＡＤ系统的过程。说明民ＡＵＴＯＣＡＤ的接口，以及综合ＣＡＤ的功能。     

机械CAD图形计算机辅助标注系统的研制

以ＡＵＴＯＣＡＤ为支撑软件，以ＡＵＴＯＬＩＳＰ语言为工具，开发了一套机械ＣＡＤ图形自动标注系统，该系统可方便地实现机械ＣＡＤ图形的各种标注。     

在 AUTO CAD 中实现零件轮廓数控自动编程

介绍了在ＡＵＴＯＣＡＤ系统中用ＡＵＴＯＬＩＳＰ语言对图形实现数控铣自动编程的方法，实现图形交互式数控机床自动编程。     

AUTO CAD图形和WPS汉字编辑排版的研究

在分析ＡＴＵＯ ＣＡＤ图形文件接口的ＷＰＳ图文存贮格式的基础上，提出了解决ＡＵＴＯ ＣＡＤ图形和ＷＰＳ汉字编辑排版的三种方法，并对中断程序法进行了成功的尝试。     

AUTO CAD图形和WPS汉字编辑排版的研究

在分析ＡＵＴＯＣＡＤ图形文件接口和ＷＰＳ图文存贮格式的基础上，提出了解决ＡＵＴＯＣＡＤ图形和ＷＰＳ汉字编辑排版的三种方法．并对中断程序法进行了成功的尝试。     

智能化CAD模型与程序设计

介绍了实现ＡＵＴＯＣＡＤ二次开发中的图形处理智能化的模型,并给出了在ＡＵＴＯＣＡＤ环境下实现绘图对象智能化处理的一种全新的程序设计方法。     

CAD系统中VB界面与AUTOCAD的连接

本文介绍了如何利用ＶＢ语言及ＡＴＵＯＣＡＤ软件来制定冲裁模ＣＡＤ系统中的界面，提出了ＶＢ界面与ＡＵＴＯＣＡＤ及ＡＤＳ程序之间接口问题的解决方法。     

Analysis of roof and pillar failure associated with weak floor at a limestone mine

A limestone mine in Ohio has had instability problems that have led to massive roof falls extending to the surface. This study focuses on the role that weak, moisture-sensitive floor has in the instability issues.Previous NIOSH research related to this subject did not include analysis for weak floor or weak bands and recommended that when such issues arise they should be investigated further using a more advanced analysis. Therefore, to further investigate the observed instability occurring on a large scale at the Ohio mine, FLAC3 D numerical models were employed to demonstrate the effect that a weak floor has on roof and pillar stability. This case study will provide important information to limestone mine operators regarding the impact of weak floor causing the potential for roof collapse, pillar failure, and subsequent subsidence of the ground surface.     

煤矿计算机辅助设计与绘图系统及其实现

煤矿计算机辅助设计与绘图系统是在Auto CAD丰富的图形编辑功能基础上,根据煤矿常用图件的特点而开发的一套CAD应用软件,主要用于设计和绘制采掘工程平面图、矿建设计施工图和各种机械图等.该系统融数据管理、设计计算与绘图于一体.大大地提高了设计绘图的效率和质量.     

矿图设计、绘制与管理信息系统开发

对矿图计算机绘制与管理的发展概况、应用现状进行了分析 ,在此基础上 ,较详细地介绍了以Windows为运行环境、AutoCAD2 0 0 0为图形平台所开发的适合矿山实际情况的矿图设计、绘制与管理信息系统 ( 2MDMIS)的组成、系统的基本设置及功能特点     

放矿随机模拟模型的比较研究

本文采用理论证明和电算模拟实验相结合的方法,对目前存在的两种放矿随机模拟模型——九块模型和空位扩散模型——进行了达孔量概型、放矿概率场和模拟系统变化特征等三个方面的比较研究,并且从理论上分析了同时掉块数不同的模型模拟时,产生不同采样失败率的原因.研究结果表明:两种模型本质上是一致的,其差异只在于两种模拟系统中,选取方块移动的方式不同.本文的研究揭示了现有的两种模型的统一性,对今后放矿随机模拟模型的研究起着抛砖引玉的作用.     

矿山测量信息管理及数据处理系统

介绍了“矿山测量信息管理及数据处理系统”的功能、开发运行条件及其建立方法．该系统使矿山测量管理工作在当前流行的Ｗｉｎｄｏｗｓ图形环境下得以实现,并将数据管理、平差计算、绘图技术融为一体,能做到在进行计算和绘图过程中数据的自动存取,是实现矿山测量工作自动化的新起点．     

Multi-parameter numerical simulation of dynamic monitoring of rock deformation in deep mining

The level of deformation development of surrounding rocks is a vital predictor to evaluate impending coal mine disasters and it is important to establish accurate measurements of the deformed status to ensure coal mine safety. Traditional deformation monitoring methods are mostly based on single parameter, in this paper, multiple approaches are integrated: firstly, both electric and elastic models are established,from which electric field distribution and seismic wave recording are calculated and finally, the resistivity profiles and source position information are determined using inversion methods, from which then the deformation and failure of mine floor are evaluated. According to the inversion results of both electric and seismic field signals, multiple-parameter dynamic monitoring of surrounding rock deformation in deep mine can be performed. The methodology is validated using numerical simulation results which shows that the multi-parameter dynamic monitoring methods have better results for surrounding rock deformation in deep mine monitoring than single parameter methods.     

New risk assessment methodology for coal mine excavated slopes

This paper presents a new risk assessment methodology for coal mine excavated slopes. This new empirical-statistical slope stability assessment methodology(SSAM) is intended for use by geotechnical engineers at both the design review and operational stages of a mine's life to categorise the risk of an excavated coal mine slope. A likelihood of failure is determined using a new slope stability classification system for excavated coal mine slopes developed using a database of 119 intact and failed case studies sourced from open cut coal mines in Australia. Consequence of failure is based on slope height and stand-off distance at the toe of the excavated slope. Results are presented in a new risk matrix, with slope risk being divided into low, medium and high categories. The SSAM is put forward as a new risk assessment methodology to assess the potential for, and consequence of, excavated coal mine slope failure.Unlike existing classification systems, assumptions about the likely failure mode or mechanism are not required. Instead, the SSAM applies an approach which compares the conditions present within the excavated slope face, with the known past performance of slopes with similar geotechnical and geometrical conditions, to estimate the slope's propensity for failure. The SSAM is novel in that it considers the depositional history of strata in an excavated slope and how this sequence affects slope stability. It is further novel in that it does not require explicit measurements of intact rock, rock mass and/or defect strength to rapidly calculate a slope's likelihood of failure and overall risk. Ratings can be determined entirely from visual observations of the excavated slope face. The new SSAM is designed to be used in conjunction with existing slope stability assessment tools.     

A case study on the efficacy of different roof bolting schemes in Lhoist North America's Crab Orchard Mine

Roof bolting has long been used in underground mines across the world to provide ground support. Modern roof bolts are cheap and easy to install with the use of specialized machines as a part of the production cycle. Lhoist North America’s Crab Orchard Mine is an underground room and pillar limestone mine that uses mechanically anchored roof bolts for ground support. The mine currently employs two different roof bolting patterns: a standard 1.5 × 1.5 m pattern, and another 0.8 × 0.8 m pattern for use in areas with particularly hazardous roof conditions. The purpose of this study is to evaluate the relative effectiveness of each bolting pattern. A series of numerical models were created using RocScience’s RS2. The models were based on a symmetrical section of the mine at its deepest point, and were modeled using generalized Hoek-Brown failure criterion along with a discrete fracture network. A series of sensitivity analyses were performed on the models by varying parameters such as joint friction angle, crack persistence, joint randomization, and tensile strength of the limestone. Based on the results of the original models and sensitivity analyses, it appeared that the standard bolting pattern provided sufficient roof support capacity under almost all the expected conditions at the mine, since safety factors below the design value of 1.5 were only found for individual bolts in a few of the worst test cases considered. These results can help improve the mine’s productivity and reduce operating costs without compromising safety.     

基于MapGIS的巷道地质素描图绘制系统设计与实现

根据金属矿山地测数据管理业务需求,首先剖析了巷道地质素描图组成要素,设计了基于MapGIS的巷道地质素描图的绘制流程以及绘制系统的组成模块。巷道地质素描图组成要素主要由基本信息、地层信息、构造信息、水文地质信息、刻槽样轨信息与样品化验信息组成。巷道地质素描图绘制系统主要由数据管理、坐标转换、巷道素描图模板自动生成、组成要素绘制、矿岩类型与面状构造、刻槽样轨自动生成、自动注记、巷道综合地质素描图生成等8个模块组成。接着,采用面向对象的方法,分析组成巷道地质素描图空间实体对象及其实体对象之间的拓扑关系,建立了支持巷道地质素描图自动绘制的逻辑与空间数据模型。最后,基于MapGIS平台及其组件式开发技术,实现了巷道地质素描图绘制系统,绘制了上海宝钢集团梅山铁矿巷道地质素描图,取得了良好效果,为矿山地质图件的信息化建设提供了应用的依据和实践经验。     

金属矿山岩体移动监测数据库系统设计与实现

介绍了在微机上建立金属矿山岩移监测数据库系统,本系统利用ＦＯＸＢＡＳＥＴＲＵＥ ＢＡＳＩＣ混合编程,具有对监测数据进行数据管理,数据处理以及绘图等功能,并在某矿山的岩移监测研究中得到应用,效果良好。