Jointed rock deformation modulus testing method
A technology of deformation modulus and jointed rock mass, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of inconvenient large-scale testing and joint development, low testing cost, and difficulty in processing rocks into rods, etc.
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[0066] Adopt the present invention to carry out undisclosed test in domestic certain open-pit mining mine, concrete implementation steps are as follows.
[0067] Step 1: Deformation modulus test of jointed rock mass
[0068] The joint rock deformation modulus test includes two aspects of work, as follows:
[0069] (1) Select rock blocks on site, process the rock blocks into standard rock samples, and test the density of the rock blocks to be 2520kg / m 3 , the Poisson's ratio of rock samples tested by the rock mechanics test system (RMT-150C) is 0.22.
[0070] (2) The deformation modulus dynamic test of the jointed rock mass was carried out on a temporary step formed by open-pit mining. The width of the step is about 72m, and the hole is drilled vertically downward with a down-the-hole drill. The hole diameter is 70mm and the hole depth is 12.0m. Arrange a measuring line on the surface of the steps, arrange 5 measuring points along the measuring line, and use gypsum powder to ...
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