The study of the influence of climatic fluctuations and water infiltration on the thermal regime of the upper part of the layered earth crust, layers of daily, annual, perennial and other heat cycles is important for the interpretation of hydrogeological, geophysical, engineering-geological and other data, for the establishment of regularities of distribution, formation and preservation of mineral deposits in the search, exploration and exploitation of these deposits, in assessing the overall thermal balance of the earth's surface, as well as in solving agrotechnical and technical problems.
Reconstruction of geologic history is one of the tasks of geophysics, the possibility of solving which is conditioned by geophysical fields and properties of rocks ...
The question of taking into account lateral influences in electrical exploration by direct current methods arose during the first works under hydraulic structures and solving the problems of ore geology ...
The southern slope of the Baltic Shield has been drilled by many wells, mostly shallow. In order to compare the thermal state of crystalline rocks in different regions of the Baltic Shield, temperature measurements in deep boreholes that are not distorted by geomorphologic, hydrogeologic and other influences are necessary.
Stationary groundwater filtration affects the thermal state of rocks and creates anomalous temperature distribution in wells. The amplitude of the temperature anomaly in such geothermograms recorded in wells under steady-state thermal regime can be used to calculate the filtration rate in the aquifer using the formulas...
In the method of infinitely long cable (ILC) on the receiving device located in the vicinity of the ore body, the total magnetic field, consisting of the primary field Hi, created by the cable, and the secondary field H2, excited by the ore object. As a result, the anomalous secondary field stands out against the background of the primary.
The Matsesta area is confined to the Sochi artesian basin with the main aquifers belonging to the Cretaceous and Upper Jurassic limestones. The feeding areas of the artesian basin belong to the open anticlinal structures and the northern limestone-filled sides of the basin. The inner feeding areas are located much lower than the marginal ones and are at the same time places of discharge of deep waters of the basin. The thermal springs of Matsesta and Agura are confined to such areas. The thermal regime of the basin depends on cold waters flowing from the feeding areas and thermal waters entering the discharge areas. The therapeutic waters of Stara Matsesta come to the springs through the chalk rocks from different depths and, consequently, have different temperatures.
Естественное тепловое состояние горных пород нарушается в районе скважины в процессе бурения. Степень нарушения этого состояния зависит от многих причин.
Метод регистрации тока основан «а изучении электропроводности торных пород с помощью электрода, перемещающегося ,в буровом растворе вдоль оси скважины. Наиболее широко он используется для определения местоположения рудных тел в геологических разрезах скважин и расчленения этих разрезов.
В первом приближении поле заряженного изометрического тела может быть рассмотрено как поле точечного источника. Строго говоря, это справедливо для тела сферической формы, залегающего в безграничной и однородной среде. Упрощая расчеты, можно использовать поле точечного источника для замены поля заряженной сферы и при неоднородной среде. Несмотря на это допущение, общие выводы, вытекающие из настоящей работы, в определенных условиях приемлемы и для изометрических тел.
В настоящее время широко используются материалы термических .измерений в скважинах для определения геотермического градиента, температуры пластовых вод и горных пород в их естественных условиях залегания. Однако эти материалы не всегда обладают надлежащей точностью. Одной из основных причин, вызывающих появление погрешностей при определении температуры горных пород и пластовых вод, является нарушение скважиной естественного теплового поля Земли, т. е. нарушение стационарного термического режима района.
The present article is devoted to the development of issues related to the search for sulfide ore bodies missed and lost by mine workings in copper mines of the Urals by means of electrical exploration methods. In it the technique of searching for sulfide ore bodies from mine workings by a complex of electrical prospecting methods (shadow and method of measuring the natural electric field) is given and the possibility of using them in the presence of interfering influence of underground mine power generation is shown. The prospecting works confirmed the success of the proposed method, good performance of the used equipment, accuracy and completeness of interpretation of the shadow method materials. In addition, the present work considers the possibility of application of DC methods for the purposes of prospecting and exploration of ore bodies from mine workings.