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Quality Evaluation Method of Rock Formation While Drilling

A quality evaluation and rock formation technology, applied in surveying, earthwork drilling, wellbore/well components, etc., can solve the problem of continuous evaluation of roadway rock formation quality, etc., and achieve the effect of efficient continuous drilling, easy operation and simple process

Active Publication Date: 2016-06-01
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0004] The present invention solves the problem that the roadway rock formation quality cannot be continuously evaluated at present, and provides a feasible, efficient, continuous roadway surrounding rock quality evaluation method that does not affect the excavation support

Method used

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  • Quality Evaluation Method of Rock Formation While Drilling

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Embodiment Construction

[0025] The present invention will be further explained below in conjunction with the accompanying drawings.

[0026] The invention is a rock formation quality evaluation method while drilling. In the process of implementation, the stratification parameters of the surrounding rock of the roadway are first determined through geological drilling or geological data, so as to have an overall grasp of the characteristics of the rock formations of the surrounding rock of the roadway. Then, in the roadway excavation and support process, by using a special detection drilling rig to record the changes in drilling parameters during the process of drilling bolts and anchor cables, and by processing the measured data, the formation of the rock formation near the drilling hole Quality Evaluation. As the excavation and support process progresses, the exploration drilling rig obtains continuous data, and the data of all measured holes are integrated to obtain continuous and detailed quality ...

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Abstract

The invention relates to a rock formation quality evaluation method while drilling, which is especially suitable for evaluating the rock formation quality in shaft engineering. First, determine the stratification parameters of the roadway surrounding rock through geological drilling or consulting geological data, so as to have an overall grasp of the characteristics of the roadway surrounding rock strata; The drilling parameters are acquired during the process, and data processing is performed on the measured parameters to form a quality evaluation of the rock formation near the borehole; as the roadway continues to excavate, the exploration drilling rig is used to obtain continuous data, and the data of all drill holes are integrated to obtain a continuous The quality evaluation of rock formations, and corresponding support methods are put forward accordingly. This method is a feasible, efficient, continuous roadway surrounding rock quality evaluation method that does not affect the excavation support.

Description

technical field [0001] The invention relates to a rock formation quality evaluation method while drilling, which is especially suitable for evaluating the rock formation quality in shaft engineering. Background technique [0002] As a safe channel for coal mine production, the stability of the roadway is very important, so it is self-evident to master the rock formation quality evaluation method of the roadway surrounding rock. On the one hand, the reasonable control and maintenance of the roadway is related to the normal production of the mine and the life safety of the workers, while the accidents in the roadway are mostly caused by the unscientific support design caused by the uncertainty of the quality of the surrounding rock of the roadway. As an important basis for roadway support design and other coal mine engineering activities, it is particularly important. On the other hand, with the increase of coal mine mining depth, the control problem of weak and broken surrou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B49/00
Inventor 张农孟子浩陈红李宝玉薛飞
Owner CHINA UNIV OF MINING & TECH
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