Analysis of time-to-time variation of load on interchamber pillars in mines of the Upper Kama Potash Salt Deposit

The procedure to estimate growth in load exerted on interchamber pillars with time is based on mathematical modeling of stresses and strains in structural elements of room-and-pillar mining method and on roof rock failure criteria. The calculation results illustrate a real time scale of variation in strength of rocks and the associated partial collapse of a parting and failure of edges of interchamber pillars when their height is increased.     

Micromechanical Characteristics of Karnallite,Sylvinite and Rock Salt at Upper Kama Deposit

The authors appraise the test measurements of elastic modulus and micro-hardness of sylvite, halite and carnallite grains on NanoTest-600 unit, and analyze micromechanical properties of grain boundaries in silvite and halite. An approximate estimator formula for yield stress has been derived based on the micro-hardness test data.     

The gravimetrical survey in handling the geological and mining problems at the Upper Kama Potassium Salt Deposit

The article reviews the recent procedures and software intended for processing and interpreting of gravimetry data in terms of the Upper Kama Potassium Salt Deposit, which allows the detail density structure of the strata. It is illustrated how to handle complicated geological problems to improve the safety of mining.     

Gas-geochemistry approach to monitoring mining-induced genesis processes in the geological environment of the Upper Kama Potassium Salt Deposit

The article focuses at the gas-geochemistry profiling results at the Upper Kama Potassium Salt Deposit. It has been examined how the mining-caused deformations in the salt strata and abovesalt hydrocarbon strata influence the gas background in the subsurface layers. Efficiency of the gasgeochemistry approach to monitoring the mining-induced genesis processes in the studied geological environment has been proved.     

全站仪GPS(RTK)在物探工程测量中的配合应用

对GPS(PTK)技术与全站仪,在物探工程测量中的应用技术作了介绍,并对两种方法结合使用的优越性作了简要分析.     

GPS RTK在地球物理勘探中的应用

GPS(Global Positioning System)全球定位系统是以卫星为基础的无线电卫星导航定位系统,具有全球性、全天候、连续性、实时性导航定位和定时功能,而且具有良好的抗干扰性和保密性,能为各类用户提供精密的三维坐标、速度和时间。RTK(Real time Kinematic)技术即实时载波相位差分技术,是实时处理两个测点载波相位观测量的差分方法,它具有观测时间短、精度高、无须通视和现场给出精确坐标等优点。     

The Analysis of Potash Salt Dust Deposition in Roadways

Journal of Mining Science - The authors propose a mathematical model of salt particulate dynamics in a roadway, including convection and diffusion of particles with air flow, coagulation of...     

Specific roof behavior in the southern wing of the Upper Kama potash salt deposit

The authors consider a number of geomechanical monitoring methods for the underworked salt rock behavior, including visual control of its specific structural features, measurement of displacements using contour and depth reference points, and assessment of stresses in the surrounding rock mass. It is proposed to assess stresses in salt rocks using long spacing measurement methods without modeling-based recovery of stresses from measured strains if possible.     

综合物探在煤田采空区勘查中的应用

通过使用综合物探方法在复杂地质条件下找水的应用效果,介绍了反射系数法、电磁成像系统的简单工作方法,阐述了在极度贫水区、黄土塬的残塬区的找水工作方法.     

地球物理测井在煤田地质勘探中的应用

对地球物理测井在煤田地质勘探中的的普查、预测、勘探,以及开采设计中的普遍应用,进行了简要介绍。     

Estimate of Initial Stresses in Rock Mass of the Upper Kama Region Based on Block Hierarchical Model

Theoretical estimate of regional and local initial stresses in the rock mass of the Upper Kama deposit was made by the finite-element method on the basis of geomechanical models designed according to geological and geophysical data. Practical recommendations are given for taking into account the results obtained in developing the systems of potash deposit mining, as well as in designing the underground structures for industrial and civil purpose.     

Geomechanical forecast for distribution of fissuring areas in the saliferous measures of the Upper Kama potash salt deposit

Based on the mathematical modeling, it has been shown that forces of gravity generated by overlying deposits in the course of sedimentation create prerequisites for the formation of subvertical fissuring areas in saliferous measures. Prognostic estimates of distribution of these areas over the deposit are made. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 5, pp. 11–21, September–October, 2007.     

太行山中段超大型钾长石矿床成矿地质条件分析

通过对河北省灵寿县南营乡上水泉洼钾长石矿床的普查地质工作,结合区域找矿及区域地质资料分析,太行山中段太古界阜平群及五台群区域变质岩系中赋存有6个超大型钾长石矿床.通过对超大型钾长石矿床区域成矿背景,成矿地质特征的研究,总结了矿床的成矿地质条件.     

物探在平朔东露天矿采空区勘探中的应用

东露天矿田位于宁武煤田平朔矿区北端,地质储量18.49亿t,东露天现在推进位置存在沟底新井煤矿、砖井煤矿和小西窑矿3大煤矿采空区并存的现状,对采空区的勘探已经迫在眉睫,介绍了通过物探的方法对采空区范围及分布情况的确定,为采空区的治理提供了可靠地依据。     

驼峰山地区应用物化探寻找隐伏铜矿体的研究

从驼峰山地区地球物理特征、地质物化探找矿标志等几方面分析入手，初步建立了该区应用物化探寻找隐伏铜矿体的找矿模式，简述找矿程序并按模式找矿取得的地质效果。     

综合物探在查明煤矿老窑采空区中的应用

以平顶山大庄矿为例,采用三维地震和电法综合的方法来查明老窑采空区的分布范围,取得较好的效果.     

物探方法在煤矿地质灾害勘查中的应用

采煤活动引发了很多地质灾害,根据其表现出的地球物理特征,能够利用高密度电阻率法、瞬变电磁法、测氡法等物探方法,勘查多种煤矿地质灾害,查明灾害的影响范围,以便于及时采取措施进行防治,将灾害减小到最小.     

Influence of Drainage with High Levels of Water-Soluble Salts on the Environment in the Verhnekamskoe Potash Deposit,Russia

Saline drainage from slurry storage facilities can deteriorate the properties of clay barriers in the beds of embankment dams and slurry ponds and cause saline drainage to infiltrate into groundwater. The chemistry of slurry material, drainage, springs, surface water, and soils was studied near the slurry storage facility of the Verhnekamskoe potash mine (Russia). Our study showed that the Na–Cl type mine drainage water, with high amounts of nitrogen compounds, increased the salinity of the groundwater and surface water, and the river valley ecosystems. As a result of ion exchange and leaching, the soil, groundwater, and surface water have elevated levels of \({\text{C}}{{\text{a}}^{2+}}\), \({\text{M}}{{\text{g}}^{2+}}\), \({\text{SO}}_{4}^{{2 - }},\) and \({\text{F}}{{\text{e}}_{{\text{total}}}}\), and extremely high \({\text{~N}}{{\text{a}}^+}\) and \({\text{C}}{{\text{l}}^ - }{\text{~}}\) values. Iron-rich precipitates and hydrogen sulfide tend to form down-gradient in the saline, water-logged seepage areas.