为研制矿山呼吸性粉尘浓度个体监测仪,采用MIE光散射方法,试制以红外线发光二极管作为光源的呼吸性粉尘浓度个体监测仪,该监测仪主要由气路部分、光路部分及电路部分组成.利用中国安全生产科学研究院自制的粉尘简易试验装置,在气体流量为2L/min、颗粒粒径不大于5 pm的条件下,研究试制仪器电压输出值和流入粉尘质量浓度二者的对应关系.结果表明:根据不同粉尘质量浓度下的输出电压数据,在0～300 mg/m3测量范围内,试制仪器输出电压值和粉尘浓度之间具有线性函数关系,说明呼吸性粉尘浓度个体监测仪是合理可行的;粉尘监测仪测试结果与比对仪器测量结果对比分析可知,测量误差最大为1.59％,满足粉尘检定规程要求..

The work safety standardization of metal and nonmetal mines is an important means to conscientiously implement the main responsibility of the enterprise for production safety,to prevent and control risk of accidents in mines,and to enhance management level of mine work safety.Through the guidance of work safety standardization system creation for a number of mines,the create process of work safety standardization was divided into the preparatory stage,the initial stage and document planning three stages,the creating steps and contents of work safety standardization in metal and honmetal mines were pointed out in detail through the three stages,and the six aspects of standardization that the futrue should be emphasized in the process of creating the future,and the creating process of work safety standardization for metal and nonmetal mines was put forward.

It can improve the enterprise safety management and intrinsic safety through the practices of safety standardization.The safety management and production system of metal and nonmetal mine were more varied,and in order to construct the standardized system which adapt to the actual conditions,it was necessary to understand the connotation of safety standardization and correctly grasp its core idea and rationale.The safety standardization in metal and nonmetal mine was composed of fourteen core elements,on the basis of analyzing the contents of safety standardization in metal and nonmetal mine,the core idea was discussed based on risk management,and the rationale were put forward,including accident prevention,systematization,humanism,Deming circle theory and related principle as full participation,safety behavior and attitude etc.

1 研究目标 课题组从我国安全生产工作的整体需求出发,建立和完善我国安全生产重点领域标准体系,研究制修订一批急需的安全生产关键技术标准,最终实现全面促进和提升我国安全生产标准化水平的目标.

In this paper,208 non-coal mine standard and 308 special equipment standard,comparison and analysis were conducted on two types of standards in the aspects of management,revision number of years,the mandatory,basic,and technical Charactenstic. Through comparison and analysis,the same and difference contents of non-coal mine standard and special equipment standard were summarized,and the advice of revision of non-coal mine standard were suggested.

As a result of investigation and statistics,tailing ponds in China were characterized by large quantity,small capacity,low safety level as well as failure of many tailing ponds to be subject to formal design.To make things worse,domestic areas,industrial and mining enterprises or major cities and towns,etc.Were located downstream most of these tailing ponds.Therefore,it is imperative to strength risk management of the tailing ponds and establish tailing dam failing risk index system and risk evaluation model,which will play a significant role in reducing and preventing the occurrence of tailing dam failing accident,ensuring safe operation of the tailing ponds,making them to better serve safe production of the mines as well as healthy,steady and rapid development of the national economy,etc.Many factors affect the steadiness of tailing reservoir engineering,some of which are not only difficult to confirm,but also difficult to estimate the fixed quantity,at random and dim,so it is reasonable to analyze the risk evaluation of tailing reservoir failing by method fuzzy evaluation.This article made a research on mul-arranging fuzzy model in the risk evaluation of tailing reservoir failing,the model of risk evaluation of tailing reservoir based on fuzzy theory was presented,then the software of the model of risk evaluation of tailing reservoir was developed.These works are great significance to evaluate the risk of tailing dam failing and reduce the accident of tailing dam failing.

The fact that hollow area underground caused by mining bringing great damage to surface buildings is a problem that draws more and more attention in the mining security aspect concerning underground projects.On the basis of summarizing existent studying achievements on surrounding rocks deformation,moving mechanism and mining influence in the process of underground mining,this paper studied tri-belt theory that could be used to assess the influence underground mining brings to surface buildings,qualitative appraising method on the move angle and quantitative appraising method on finite-difference numerical simulation.With applying the methods above to one mine in its influence to nearby surfaces civil buildings,this paper,after obtaining survey result of the scattering of the hollow areas in the iron mine,did calculation and analysis to the influence that mining had made to the nearby civil buildings and would possibly make in future,suggested relevant measures the mine should take to safeguard such civil buildings.

This article summarized the key characteristics of work safety standard in developed countries through investigating the current situation in standard system characteristic,non-coal mine administrations and work safety standard in non-coal mine in America,South Africa and Australia.The problems of work safety standard in China were analyzed and some suggestion for further improvement were proposed.

The paper analyzed the present status and the main existing problems of non-coal mine work safety standard system in China,the significance to establish a science,rational and improved standardized system to the non-coal mine work safety in China was stated.According to the development conditions and the existing problems in non-coal mine work safety standard system,the paper provided the ideal and basic frame for the establishment of the non-coal mine standard system in China,which could be the certain base for the establishment of the non-coal mine standard system in future.

The safety and stability of tailing reservoir plays an important role in the mining production and environmental protection.Safety assessment should appraise one tailing dam's safety state on the basis of safety conditions of the dam and its affiliated constructions.Based on the practice of the projects of tailing reservoir and hydraulic engineering,this paper studied the calculation method of protecting tailing dam against flood,suggested numerical model and assessment method of cracking possibility in tailing dam.In this numerical model,Mohr-Coloumb strength criterion was expansively used in tension state,transitional mode of compression and tension was defined,expanded strength criterion could be used to describe many damage models in tailing dam,such as that under compression-shear,tension-shear and tension.Through calculation examples,this paper testified that both calculation method of protection against flood and numerical model and assessment method of cracking possibility in tailing dam can be applied effectively in safety assessment of tailing dam.