With the rapid development of drone technology,oblique photogrammetry has become an important technical means in mining surveying and mapping.This study aims to explore the application of unmanned aerial vehicle oblique photogrammetry technology in mining surveying,conduct case analysis on actual surveying tasks in mining areas,and verify the advantages of this technology compared to traditional surveying methods.Traditional mining surveying often faces problems such as complex terrain,poor visibility conditions,and high costs.However,unmanned aerial vehicle(UAV)oblique photogrammetry technology,with its flexibility,accuracy,and efficiency,has shown significant advantages in overcoming these challenges.By using drones equipped with multi lens cameras for aerial photography,combined with 3D modeling,data encryption processing and other technologies,terrain data of mining areas can be efficiently and accurately obtained,providing important basis for post management,planning and decision-making of mining areas.
High-entropy alloys (HEAs) have attracted much attention in the field of penetrating materials due to their excellent mechanical properties and superior penetration ability. In this paper, the penetration experiments of WFeNiMo HEAs projectile and Q235 projectile impacting steel target at high speed are carried out by using two-stage light gas gun. The velocity of impacting is from 1186 to 1413 m/s. At the same time, the parameters of Johnson–Cook constitutive equation considering temperature and strain rate effects are determined by dynamic and static mechanical performance tests, and numerical simulation is carried out by AUTODYN-3D. By comparing numerical simulation and experimental results, the penetration characteristics of WFeNiMo HEAs are analyzed on the temperature, stress and damage morphology of the two materials when the projectile hits the steel target at high speed. The experimental results show that the deformation and shear failure mainly occur in the WFeNiMo HEAs projectile head, and the projectile head is in a sharp state during the penetration process. WFeNiMo HEAs have strong adiabatic shear sensitivity and are prone to adiabatic shear phenomenon, showing “self-sharpening” penetration characteristics.
红花脑矿区锡矿是云山岩体周边地区新发现的一处小型矿床,它与桐木坑、邓家山矿区有着同样优越的成矿条件,矿(化)体类型有花岗岩原生节理构造蚀变岩型、花岗岩内接触带蚀变岩型、断裂构造蚀变岩型三种,结合矿化类型探讨其矿床成因,为云山远景区锡矿找矿早日取得重大发现,提供一点个人观点.
Advanced Materials Science and Technology is a peer-reviewed open access journal published semi-annual online by Omniscient Pte. Ltd. The journal covers the properties, applications and synthesis of new materials related to energy, environment, physics, chemistry, engineering, biology and medicine, including ceramics, polymers, biological, medical and composite materials and so on.
In order to alleviate the impact of current mineral development work on the surrounding ecological environment,improve ecosystem stability,and promote local economic development,this article takes a metal mine as an example to study the types of geological disasters caused by the mining process of a metal mine,analyzes the environmental problems that are prone to occur in metal mine mining,and proposes the application of metal mine exploration technology,metal mine disaster reduction technology,and early warning system The measures for controlling slope waste and soil erosion,as well as geological disaster prevention and geological environment protection in mines,are aimed at providing reference for relevant personnel.
地质勘查找矿技术具有较强专业性,不断探寻更科学、先进的技术与措施,是所有找矿、地勘工作人员的工作目标.在地质找矿过程中,创新、发展、高效、安全是核心内容,需要在地勘工作中进行全面贯彻,在此,对地质找矿思路、安全环保提出几点看法.
近年来多接收杯电感耦合等离子体质谱(MC-ICPMS)的广泛应用以及化学分离技术改善,极大提高了Ni稳定同位素分析方法的精确度和准确度,推进了Ni同位素地球化学的发展.Ni特殊地球化学性质使其成为同位素地球化学前沿领域,并已取得了一系列成果.本文首先介绍了高效、方便的分离纯化流程和高精度、准确度分析测试技术;其次,总结了地球主要储库的同位素分布和组成,结果表明地质样品Ni同位素分馏程度60Ni达到 3.5‰.最后,综述了Ni同位素在反演星核形成、演化时间以及示踪源古环境、物质来源等领域的应用.
矿区在区域上位于华南褶皱系赣西南褶皱的中西部的大湖山-芙蓉山隆断束与兴国环状构造的撒开端内侧的复合部位.岩浆活动频繁,受多期构造运动影响,褶皱、断裂构造发育.区域内矿产资源比较丰富,已知矿种有钨、锡、铜、钼、铅、锌等金属矿产和花岗岩、石灰岩等非金属矿产及热水资源资源丰富.本文针对赣西南地区铜多金属矿点,通过总结铜多金属矿矿产成因类型、成矿规律及成矿模式.
The effectiveness of laboratory tests can be described by uncertainty,and the technical level of the laboratory can be analyzed from uncertainty.This paper takes the uncertainty of the determination of copper content in tungsten concentrate by atomic absorption method as the research object,briefly describes the research background,and then analyzes the research method in detail from the two dimensions of building mathematical model and quantifying the uncertainty component to obtain the research results,aiming to provide more laboratories with the thinking direction of the uncertainty of the determination of copper content in tungsten concentrate,improve the test quality,and help the orderly development of relevant industries.
The paper introduced and reviewed titanium sponge and ingot such as its output and production capacity,product mix and market review of titanium mill products and industry development of Japan titanium industry in 2022.Finally,on the basis of this,the paper prospects the future of Japan titanium industry.
In the process of zinc hydrometallurgy,the direct yield index of zinc,as a comprehensive technical and economic index of zinc smelting enterprises,directly reflects the comprehensive recovery degree of zinc resources,and also marks the technical level and production management level of zinc smelting enterprises.In this paper,the influencing factors of zinc direct yield in the process of zinc hydrometallurgy were analyzed,and how to improve zinc direct yield and how to take relevant measures.
China is rich in mineral resources,and with the development of the economy,the demand for mineral resources is also constantly increasing,causing serious mineral mining.In order to meet the needs of social development,it is necessary to use tailings from tailings ponds for comprehensive beneficiation to solve the problem of insufficient mineral resources.So it is necessary to analyze the mineral characteristics in the tailings of the tailings pond,which are small particle size and complex mineral composition;Enriched with toxic elements and lacking economic value;Loose structure and strong acidity;The characteristics of easy loss and significant long-term storage hazards are proposed,and the direction of its utilization is to use tailings minerals in glass,building materials,filling,and other aspects to improve the resource utilization efficiency of mineral enterprises.
China is rich in mineral resources.The mine hydraulic environment mainly includes hydrogeology,environmental geology and engineering geology.No matter which link has problems,the overall construction of the mine project will be affected,causing serious mine geological disasters.Therefore,in order to meet the growing demand for mineral resources and ensure the implementation of mine geological disaster prevention,it is very necessary to assess the risk of hydraulic environmental geological disasters in the process of mining mineral resources.That is,construction personnel are required to constantly optimize the risk assessment method of hydraulic environmental geological disasters in combination with the actual situation of the mine,so as to ensure that the mining of mineral resources is practical and efficient,and the mine geological disaster prevention ability is effectively improved.This paper is an in-depth discussion of this problem,and provides a reference for the follow-up mine hydraulic environmental geological disaster prevention.
China's lead-zinc combined smelting industry is developing rapidly and its technology is mature,but it is also facing many problems such as shrinking market demand,overcapacity in some industries,insufficient energy consumption and environmental indicators.Generally speaking,domestic lead and zinc enterprises have developed for decades,and some technical transformation schemes have been quite successful,which has improved the overall production capacity and technical equipment level of lead and zinc enterprises.At present,the continuous large-scale,green,energy-saving and environmental protection production mode has been put on the agenda of lead and zinc enterprises,and enterprises are constantly analyzing many problems such as low comprehensive recovery level of resources,high production cost,environmental pollution and so on,and thinking about the realistic gap between themselves and foreign countries.Therefore,this paper discusses the current development status of lead and zinc enterprises in China,analyzes the technical advantages and contents of lead and zinc smelting process,and finally thinks about its industrial technical advantages.
In recent years,in order to ensure the rapid development of China's economy,various underground mineral resources have become the main source of energy in China.However,excessive resource exploitation and geological movement have led to the existence of underground mined-out areas in many mining areas.In addition,there are differences in mining operation methods and management systems across the country,leading to the existence of various forms and structures in mined-out areas,which seriously threatens the safe production of mining areas.Therefore,starting from the characteristics of the goaf,the article analyzes the harmfulness of the treatment of the underground goaf in the mine,and focuses on the research methods of comprehensive treatment of the goaf,with a view to ensuring the normal production and life of the surrounding residents and the health and safety of the mining staff,avoiding all kinds of safety accidents from the source as far as possible,and ensuring the orderly progress of the mining operation.
In 2022,the energy crisis led to soaring electricity costs in Europe and other major regions,while overseas inflation remained high,and the economic downturn led to weak aluminum demand.In order to cope with the cost increase and weak demand,Western multinational aluminum companies represented by Rio Tinto,Alcoa,Hydro and Rusal all adjusted their strategic layout and reduced the production scale of upstream industries.Overseas consumption in 2023 is still weak in the context of energy crisis,geopolitical conflicts and global economic downturn.But on the other hand,the green recovery of economy has become a new global consensus.Enterprises still need to grasp the opportunity and meet new challenges by actively exploring and adjusting strategic thinking,production and marketing strategies and a series of measures.
The main purpose of this project implementation is to conduct a detailed exploration of the Dongqiu ore goaf in Jinan area,and to basically identify the distribution of the Dongqiu ore goaf,including the plane and elevation distribution range,top and bottom plate burial depth,thickness,filling situation,volume,roof collapse situation,groundwater situation,etc.,and to conduct a risk assessment of the goaf,providing a basis for filling and treatment of the goaf,and combining with the current situation,Fence and avoid collision to ensure the safety of people's lives and property.
This paper aims to discuss the application and performance evaluation of new mineral processing equipment in open pit mineral processing engineering.With the development of mining engineering,the traditional beneficiation equipment meets challenges in handling complex ores,so new equipment needs to be introduced to improve the beneficiation efficiency.We first introduce the types and principles of several new beneficiation equipment,and then analyze their application in open-pit beneficiation engineering in detail.By studying real cases,we evaluated the performance of these new devices,including their processing capacity,mineral processing efficiency and environmental performance.The results show that the new beneficiation equipment has great potential in improving the ore treatment efficiency and resource utilization rate,and is also expected to reduce the environmental impact.This study provides a useful reference for the application of new equipment in open-pit mines,and helps to promote the sustainable development of mining engineering.
With the increase in the depth of metal resource development,the layout of the mining project is affected by the complex geomechanical environment,and serious ground pressure disasters such as large deformations and rock bursts are prone to occur.Aiming at the typical characteristics of deep mines in the Jiaodong area,this article summarizes several support theories commonly used in the field of metal mines,summarizes the failure modes of deep mine support systems,and analyzes existing problems and deficiencies.It is proposed that the future support design of deep mines should be based on mine geological information and rock mechanics data,and the energy-absorbing support technology research should be carried out according to the high stress characteristics of deep rock masses.At the same time,attention should be paid to the evaluation of the support system,using evaluation data and basic geological data of the mine as training samples,and establishing an intelligent decision-making system for support based on deep learning and artificial intelligence technology.
