Design of forecast system of mining damage in mining areas and its realization

Introduction Underground mining owns the percentage of 75 in all of oral mineral areas and absolute advantages in coal mining. Underground mining owns 92.5 % in coal mining and 67.3 % in all of the used mining fields, then the underground coal mining is the largest kind of dimensions in ore mining. So the mining damages are the biggest damages and own more areas[1].People evaluate that the economic loss result from the col-lapse of mining ground is high to 400 000 000 Yuan each year. The larg…     

THE UNCERTAINTY OF THE MINING ENGINEERING AND ITS APPLICATION

There are a lot of uncertainties in the mining engineering, and they make a notable impact on the engineering. The uncertainties of the physical and mechanical properties of geotectonic mass, the surrounding rock stability, the nature condition, the equipment operation, the personnel and the external environment are proposed and described. The stochastic analysis should be widely used for considering the impacts of the uncertainty on the mining engineering. The economical risk analysis and the stochastic index system should also be set up in the mining engineering.     

The State Council of P.R.C.:Several Opinions on Promoting the Sustainable and Healthy Development of Rare Earth Industry(Continued)

Ⅲ.Lawfully carrying out special rectification of rare earth industry to effectively maintain the good order in rare earth industry (10) Resolutely cracking down on illegal mining and mining beyond the quotas.The Ministry of Land and Resources shall further reinforce the achievements     

Brief news

<正>The Ministry of Land and Resources issued 2015 rare earth mining quotas The Ministry of Land and Resources issued 2015 rare earth mining quotas on May 14.Rare earth mining volume will be controlled to 105,000 tons(REO)in 2015,including 17,900 tons of ionic rare earth ore(mainly medium and heavy rare earth)and 87,100 tons of hard rock ore(light rare earth),keeping the same level as in 2014.     

STUDY ON THE SMALL CRACKS OF COVER STRATA AFTER THE COMBINED MINING IN THE THIN SEAMS

By using the continuousexploration system with multi-pipeline in the borehole, the failure cracks of cover strata (specially, the small cracks developing) after the combined mining of 16, 17 thin seams of the 4th mining block in Zhaopo Mine is explored. After that, the researching result is considered as the output and the testing result of rock mechanics parameters is considered as the verifying data, the back analysis is made with the conception of the point safety degree. The relative height of the crack developing is obtained. So, the evaluating,of the safety of 16, 17 seams combined mining under the gob water with extreme distance is made and the mining has been safety. The scientific basis is provided for the evaluating of the mining safety with the similar conditions.     

Comprehensive experiment and evaluation on safety due to fully-mechanized mining under the Xitian River at Linxin Mine

L3414 mechanized mining working face (No.14 coal seam) of Lingxin Mine is under the Xitian River.The mining disturbed zone where rock properties and conditions have been changed due to mining, the safety and environmental protection were concemed greatly. Based on engineering geological environment of L3414 working face and mining factors, the color bore-bole TV inspecting, leakage of drilling fluid monitoring,simulation experiment, numerical computing, in-situ ground stress measurement and subsidence measurement, etal, these programs contribute to the formation of a scientific basis for control water safe mining and normal mining or environmental protection in the condition of existing fully-mechanized mining.     

USING SYSTEM SIMULATION METHOD AND CADTECHNIQUE TO SOLVE THE MINING ENGINEERING RELIABILITY IN SURFACE MINES

Subjected to various stochastic factors, surface mining engineering reliability is difficult to solve by using general reliability mathematical method. The concept of reliability measurement is introduced; And the authors have combined system simulation method with CAD technique and developed an interactive color character graphic design system for evaluating and solving the mining engineering reliability in surface mines under the given constraints.     

China released 2017 first batch of rare earth mining quotas

<正>China's Ministry of Land and Resources released the first batch of rare earth mining quotas in 2017,according to an announcement on the ministry's website.The total mining amount for the first batch is 52,500 tonnes,equal to the number in 2016.Out of the 52,500tonnes,there are 43,550 tonnes for light rare earths and 8,950 tonnes for medium and heavy rare earths.The ministry said that the mining quotas for the whole year of 2017 will be allocated in the second quarter of     

Study on the forecasting and maintenance system of special railway subsidence in mine area

The fully mechanized caving coal mining under the railway in mine area will result in difficulty maintenance of railway because of great distortion and subsidence speed of ter-rene and railway. If the subsidence forecasting is incorrect and maintenance measure is not suitable in the preceding and the process of mining, the normal operation of the railway in mine area will not be ensured and perhaps the safety accident will be resulted. The railway subsidence forecasting and maintenance system for fully mechanized caving coal face are studied and developed in this connection. Based on the accurate subsidence forecasting of the terrene and railway, the maintenance measure for track and switch turnout in railway is put forward in this system.     

Study on the rights and interests value of mineral resources and its evaluation method

The rights and interests value of mineral resources includes the prospecting rights value and the mining rights value. The mining rights value is made up of the mineral resources value and the compensation value based on the in puts of capitals and labors indifferent exploration stage, the prospecting rights value should be equal to exploration differential rent of resources. According to the stage characteristic of mineral resources exploration and development, the initial evaluating methods and models are used to evaluate the prospecting rights and mining rights value.     

我国采矿CAD开发存在的问题与对策

分析了当前国内外采矿CAD的应用现状,回顾了20世纪90年代以来国内采矿CAD的研究过程,总结了国内采矿CAD开发的经验,指出我国采矿CAD存在的主要问题是作坊式的开发、模拟手工设计、缺乏高新算法和三维模型的支持等,认为进行矿床三维实体模型的研究与在此基础上开发采矿CAD将是我国采矿CAD的发展方向。     

大冶露天铁矿爆破计算机辅助设计

本文介绍的计算机辅助设计及爆破数据库管理系统是以长沙矿冶研究院和大冶铁矿长期合作进行的科研工作所积累的爆破参数和爆破效果为基础,以实测数据和相应的爆破机理为依据建立起来的,同时考虑不同矿岩类型、采矿总成本最低等因素,因此可以利用它对露天矿山清碴爆破、留碴爆破与预裂爆破进行计算机辅助设计及爆破资料的管理。     

论采矿CAD开发方法及环境与工具选择

文章简单回顾和总结了采矿CAD技术在我国发展的过程，现状及存在的问题。指出了进行采矿CAD开发方法及环境与工具选择研究的必要性和重要意义。在综合分析了我国具有代表性的采矿CAD软件的基础上，针对采矿工作的特点．建议采用原型化法进行开发。并注意选择与之相适应的环境与工具。AutoCAD为支持环境与工具进行二次开发是一种较为经济和理想的开发方法，值得推广提倡。     

矿山企业实施ERP系统方案研究

矿山企业要提高竞争力，企业的信息化建设是必由之路。企业资源计划(ERP)结合了先进管理思想与尖端信息技术，为企业的信息化建设及管理模式的转变提供了全面集成的解决方案。本文提出了矿山企业ERP的体系结构和应用框架，讨论了开发矿山企业ERP软件中的关键技术，为矿山企业实施ERP提供了有益的思路。     

采矿设计中CAD技术的应用

本文简述了CAD技术的发展概况及发展采矿CAD技术的意义;介绍了目前常用的三种软件系统及应用模式。认为采用MPCAD与MCAD技术,能较好地分析实际问题、减少工作量、缩短设计研究周期。本文提出了在采矿设计中应用CAD技术时,可将现有软件组合成模块,采用CAD模式二或模式三的工作方式,以使MCAD技术达到高效、经济和精确的水平。     

CAD技术在煤矿地质工作中的应用

基于CAD技术应用在矿业发展过程中的重要性和广泛性,分析了该技术在煤矿开采设计、采掘过程,以及在煤矿相关信息管理中的应用,最后为优化国内煤矿地质工作中的CAD技术,提出此技术的不足之处和发展前景。     

露天矿生产采剥计划系统软件开发新突破

通过金堆城钼业公司露天矿生产采剥计划系统的升级开发,结合计算机CAD的三维应用技术,完成了露天矿生产辅助设计管理的真三维可操作系统.     

无底柱分段崩落法计算机辅助设计系统的研制

在汉化ＡｕｔｏＣＡＤ１２．０的基础上，利用Ｃ语言与ＡｕｔｏＣＡＤ接口，开发研制了无底柱分段崩落法计算机辅助设计系统。其主要特点是集地质、测量、和采矿三个环节于一体，实现了设计与绘图的自动化、连续化和标准化，可大大提高采矿设计的速度与质量。     

综合应用VB和VBA语言的开采沉陷预计及治理系统开发

矿区沉陷预计和采空区综合治理是开采沉陷研究的重要内容。现有的开采沉陷预计软件程序功能单一,数据综合处理能力较低,为此,综合应用采用VB(Visual basic)、VBA(Visual basic for application)语言,并结合SUFER、EXCEL和CAD软件,开发了融合地表移动观测站设计、资料整理、数据提取、拟合计算、残余变形预计以及塌陷区综合治理等功能为一体的软件系统。首先通过加载VBA程序提高观测站设计的自动化程度,增加了程序的可移植性;其次调用MATLAB拟合程序实现对概率积分法预计参数的精确求取,并利用求取的概率积分法预计参数以及采矿地质资料进行开采沉陷预计;然后通过调用SUFER、CAD软件程序实现开采沉陷预计的可视化。系统理论和实例分析表明,该系统一体化的设计提高了观测数据的处理效率,有助于提高开采沉陷预计的针对性和精确性,此外,该系统特别增加了适用于条带式、充填式采煤法的矿区地表沉陷预计模块,可为"三下"采煤方案优化设计、矿区生态环境保护以及矿区土地复垦等提供科学依据,为实现绿色开采提供参考。     

CAD技术在采矿工程稳定性数值分析中的应用

本文阐述了CAD的特点,介绍了两个与稳定性数值分析相关的CAD命令。以有限元数值分析为例,阐明CAD在采矿工程稳定性分析中的应用。并预计CAD在该领域中的应用前景。