Patent ID: 9733387
Date: 2017-08-15
CPC Classifications: E21B,G01V

Claim:
1. A geological exploration method, comprising: determining the side length of a basic square based on an analysis method and encryption method and mathematical statistic method and dilution method, or using two times the side length of a square exploration network; arranging four sampling points a, b, c and d respectively at four vertexes of the basic square; dispersing three sampling points within the basic square; joining the above three sampling points a, b and c by a triangle; selecting a vertex from the four vertexes of the basic square; minimizing the sum of distances from the sampling point arranged at the selected vertex of the basic square to two adjacent sampling points of triangle vertexes inside the basic square; and joining the three sampling points by triangle; respectively making joint lines from the other three vertexes of the basic square to a respective nearest sampling point of triangle vertex inside the basic square; and forming a basic unit; generating a basic rotary unit by counterclockwise rotating the basic unit for 90 degrees from an original position; generating a second rotary unit by counterclockwise rotating the basic unit for 180 degrees from an original position; and generating a third rotary unit by counterclockwise rotating the basic unit for 270 degrees from its original position; joining the basic rotary unit to the base of the basic unit, joining the third rotary unit to the right side of the basic unit, and joining the second rotary unit to the right side of the basic rotary unit and the base of the third rotary unit; at the same time, making the sampling points at the vertexes of two adjacent units coincide; then, joining the sampling points of triangle vertexes which are on both sides of a common edge of adjacent two units, and making the minimum angle larger among six interior angles in two adjacent triangles, such that the length of the joint lines is between 0.20 and 0.85 times of the basic square side length, and making the distribution of sampling points more staggered and dispersed; removing the lines between two adjacent vertexes of the basic square and thereby connecting a square matching unit comprising four units, specifically the basic unit, the basic rotary unit, the second rotary unit, and the third rotary unit; using a matching unit as a reproducing unit, and translating and replicating the matching unit in an exploration area; at the same time, make the sampling points at the vertexes of two adjacent matching units coincide; joining the sampling points which are on both sides of the common edge of two adjacent matching units, and making the minimum angle larger among the 6 interior angles in two adjacent triangles, the length of the joint lines is between 0.20 and 0.85 times of the basic square side length, the distribution of sampling points is more staggered and dispersed; removing the lines between two adjacent vertexes of squares to form an initial rotary network; wherein the initial rotary network can be also suitable for horizontal exploration; respectively choosing one unit from the four units in the matching unit as starting unit of initial rotary network, and obtaining 4 subset programs of the initial rotary network; then, selecting a program from the 4 subset programs, exploratory wells or drill holes are arranged at the sampling points of initial exploration networks; determining the strike and dip direction of mine layer and stratum, and fault occurrence based on the logging and non-oriented cores from one drill hole that met fault, and the loggings from adjacent drill holes; determining the strike and dip direction of marker layer which is contacted or virtually contacted with the bottom/top surface of fault, and fault occurrence; determining the strike and dip direction of marker layer which is contacted or virtually contacted with the bottom and top surface of fault; contacting the attitude of mine layer and stratum, and determining whether the attitude of the mine layer and stratum, which is contacted with the bottom and top surface of fault, is visible in a core when the attitude of the mine layer and stratum is visible in the core, if the strike of fault and marker layer on the horizontal top surface of oblique drill core is not through the center of core, taking the drill core upright, and taking the marker layer and fault to the virtual position which is through the center of core and keeping its attitude; when the attitude of mine layer and stratum, which is contacted with the bottom and top surface of fault, is invisible in the core taking the drill core upright, and taking the mine layer and stratum and ore body near the fault in the core pieces, or in the adjacent core pieces which are put together with the core piece where the fault exists, to the virtual position passing through the center of core and keeping its attitude; plotting a local structure contour map for bottom surface of marker layer in the range, adjacent to the drill hole which met fault, according to the bottom elevations of this marker layer in this drill hole and adjacent drill holes, on one side of roughly strike of marker layer; then, plotting another local structure contour map on another side; at last, choosing the rational group of two groups dip angles, roughly strikes and roughly dip directions in two maps, as dip angle α based on the range of the azimuth v, the roughly dip direction of marker layer, the relative positions of v, OL all formulas of A, B and C are from the groups consisting of the following, wherein two-character acronyms indicate line segments between a first point labeled with a first character and a second point labeled with a second character, wherein three-character acronyms preceded by a ∠ symbol indicate an angle defined by a first point labeled with a first character, a second point disposed at a vertex of the angle and labeled with a second character, and a third point labeled with a third character, and wherein acronyms including the name of a trigonometric operation followed by three characters indicate the execution of the trigonometric operation on an angle defined by the points represented by the three characters: wherein r is either a lift or a fall angle, α′