A kind of support method and device for strengthening by high temperature heating of surrounding rock of roadway
A high-temperature heating and roadway technology, used in tunnels, earthwork drilling, installation of bolts, etc., can solve the problems of excessive deformation of roadway surrounding rock, easy mudding, affecting the safe use of roadway, etc., and achieve the effect of improving bearing capacity.
Active Publication Date: 2020-11-24
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
[0005] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a support method and device for high-temperature heating and strengthening of the surrounding rock of the roadway, so as to solve the problem of excessive deformation of the surrounding rock of the roadway caused by muddy soft rock being easily muddied, disintegrated, and expanded when exposed to water. Problems Affecting Safe Use of Roadways
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[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0025] like Figure 1 to Figure 4 As shown, a support method for roadway surrounding rock high temperature heating strengthening, the method includes:
[0026] Step 1: Sampling and analyzing the argillaceous soft rock 7 of the pre-construction roadway, and analyzing the composition of clay minerals in the argillaceous soft rock 7;
[0027] Step 2: Heat the pre-constructed argillaceous soft rock sample at a high temperature with a resistance heating rod, the h...
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The invention discloses a roadway surrounding rock high-temperature heating strengthening supporting method and device. The method includes the steps that firstly, sampling and analyzing are conductedon mud soft rock of a to-be-constructed constructed roadway, and composition of clay mineral components in the mud soft rock is analyzed; secondly, a resistance hot bar is used for conducting high-temperature heating on a to-be-constructed mud soft rock sample, and engineering mechanics strength measuring is conducted on the to-be-constructed mud soft rock sample, and heating strengthening parameters of the to-be-constructed mud soft rock sample are determined; thirdly, after mud soft rock tunneling construction is conducted by a cycle and temporary supporting is adopted, the device is arranged on a tunneling work face, and the tunneling work face is sealed in time after it is ensured that gas and coal dust do not exist on the work face; and fourthly, the device is started for conductinghigh-temperature heating on the mud soft rock obtained after tunneling construction till the mud soft rock in the heating area reaches heating strengthening parameters in the second step; and fifthly,conventional supporting of anchor rods, anchor cables and the like is conducted immediately after the temperature of the mud soft rock in the heating area recovers to 26 DEG C or lower.
Description
technical field [0001] The invention relates to a support method and device for high-temperature heating and strengthening of roadway surrounding rock. Background technique [0002] As the shallow coal resources in the central and eastern parts of my country tend to be exhausted, mine mining gradually extends to the deep and develops in Xinjiang, Inner Mongolia, Ningxia and other western mining areas rich in coal resources. The argillaceous weakly cemented soft rock is widely distributed in the Jurassic and Cretaceous strata in the western mining area. It is a special type of soft rock with late diagenesis, poor cementation, low strength, easy weathering, and disintegration when it encounters cementation. After the excavation of mud weakly cemented soft rock roadway, the surrounding rock deformation is severe and the damage is serious. It is difficult to effectively maintain the stability and safety of the roadway surrounding rock with conventional rigid support and anchor m...
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IPC IPC(8): E21D9/00E21D20/00E21C39/00
CPCE21C39/00E21D9/00E21D20/003
Inventor 王维维张迎新康宇
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY