Method for determining the rock body structure surface occurrence on basis of trace line
A structural surface and rock mass technology, applied in the direction of measuring devices, instruments, surveying and navigation, etc., can solve problems such as inaccurate measurement results, difficulty in ensuring accuracy, and inability to measure the occurrence of rock mass structural surfaces
Active Publication Date: 2017-05-31
POWERCHINA CHENGDU ENG
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Problems solved by technology
In this kind of rock mass excavation project, since the angle between the excavation surface and the direction of the rock mass structural surface is around 90°, the exposed area of the rock mass structural surface on any excavation surface is very small , resulting in the inability to directly attach the geological compass to the structural surface of the rock mass, and thus the inability to directly measure the occurrence of the structural surface of the rock mass
The current way to deal with the above situation is usually to roughly determine a direction based on personal subjective feeling and then use a geological compass to measure, but the accuracy of this measurement method is difficult to guarantee
In addition, there are often a large number of metal objects on the construction site, such as trolleys, anchor rods, steel bars, etc. The geological compass is easily disturbed by the magnetic field, which will also lead to inaccurate measurement results
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[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0024] Such as Figure 1 to Figure 4 Shown in is a schematic diagram of a specific embodiment of a tunnel excavation project, the method for determining the occurrence of a rock mass structural plane based on traces in the present invention, wherein the excavation direction of the tunnel intersects the rock mass structural plane at a small angle, Among them, the small angle intersects, which means that the excavation direction is roughly the same as the direction of the rock mass structural surface, and the included angle is usually less than 30°; correspondingly, the excavation surface perpendicular to the excavation direction is in the direction of the rock mass structural surface. It is in a nearly vertical state, generally between 60° and 90°; while the trace refers to the trajectory of the rock mass structural surface on the excavation sur...
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The invention discloses a method for determining the rock body structure surface occurrence on basis of a trace line, and belongs to the technical field of rock body measurement. The novel method for determining the rock body structure surface occurrence on the basis of the trace line is provided; the method is particularly applicable to the rock body digging engineering that the digging direction is intersected with the structure surface trend at a small angle. The method for determining the rock body structure surface occurrence on the basis of the trace line provided by the invention has the advantages that the use of a geological compass is not needed, so that the method can be well applied to conditions of small rock body structure surface exposure area, and incapability of measurement in a way of tightly attaching the compass onto the structure surface in the rock body digging process; meanwhile, the method provided by the invention cannot be interfered by a magnetic field, so that the accurate structure surface occurrence information can be obtained.
Description
technical field [0001] The invention relates to the technical field of rock mass measurement, in particular to a method for determining the occurrence of rock mass structural planes based on traces. Background technique [0002] The occurrence of rock mass structural plane is an important content of rock mass engineering geology research, which mainly includes three major elements, namely: strike: the intersection line of structural plane and horizontal plane is the strike line of the structural plane, and the two ends of the strike line are The pointing direction is the direction of the structural surface; inclination: perpendicular to the trend line, the straight line drawn downward along the inclined structural surface is the inclined line of the structural surface, and the direction pointed by the projection line of the inclined line on the horizontal plane is the direction of the structural surface Inclination; inclination angle: the angle between the inclination line a...
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Login to View More IPC IPC(8): G01C1/00
CPCG01C1/00
Inventor 原先凡吉云胡帅杨威罗宇
Owner POWERCHINA CHENGDU ENG