Synchronous detection method of terrane crack distribution of base plate

Abstract

The invention discloses a synchronous detection method of the terrane crack distribution of a base plate, comprising the following steps of: firstly, injecting water while drilling in the drilling process; secondly, drawing a water current leak-off velocity diagram for different positions in a drilling hole according to different drilling depths and corresponding water loss amount; and finally determining the fracture or crack development degrees of terranes with different depths. The invention realizes that the drilling and the water inject leakage test are synchronously carried out, ensuresthe real-time property for drilling and measuring, needs short measuring time and is suitable for geological conditions of any terrane.geological condition.

Description

technical field [0001] The invention relates to a technical method for testing rock mass engineering, in particular to a technical method for detecting the degree and location of cracks in mine floor rock formations. Background technique [0002] At present, among the technical methods used for the development of rock mass fissures or the destruction of surrounding rocks, there are borehole TV detection method and borehole leak detection method. The fluid loss in the hole is used to determine the fracture development of the rock mass in the hole. The technology related to the present invention is the drilling leak detection method. [0003] Drilling leak detection methods include porous sealing pressurized water observation method and drill hole segmented water injection and gas leakage detection technology. Among them: the disadvantage of the porous closed pressurized water observation method is that the engineering consumption is large, and the measured data are continuo...

AI Technical Summary

Problems solved by technology

Among them: the disadvantage of the porous closed pressurized water observation method is that the engineering consumption is large, and the measured data are continuous observation data at all depths, which limits its popularization and application

Drilling segmented water injection and air-inflated leak detection technology is to use water-air dual-purpose drilling double-end plugging leak detection device, in conjunction with other instruments, to perform segmental plugging water injection or air-inflated leak detection for any upward and downward boreholes to obtain observation data, according to the drilling According to the different depths of the holes and the corresponding water loss, draw the water loss velocity map at different positions in the borehole, and finally determine the degree of rock formation rupture or crack development at different depths; The leakage device is pushed into the hole for measurement; this brings two significant disadvantages: one is that the drilling and water injection leak detection are carried out step by step, which takes a long time and cannot handle emergency situations; There are collapsed holes and rock formations that are not suitable for some special geological conditions

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