Device and method for measuring hulking coefficient, and measuring method of water absorption

Abstract

The invention provides a device and method for measuring hulking coefficient, and measuring method of water absorption. The hulking coefficient measuring device comprises a first container, a second container connected with the first container, a pressurizing component arranged in the first container, and a power component for driving the pressurizing component to act on the first container and to adjust the pressure of the first container and the second container. The device and the method for measuring hulking coefficient has the following advantages: simple principle, simple calculation, easy operation, fast measurement, low cost, convenience for engineering application, combination with the engineering practice, effective reduction of cost, improvement of the production efficiency and safety; and the device and the method provide reliable data for roadway supporting and underground mining and has great practical value and social economic benefit.

Description

technical field [0001] The invention relates to the safety control technology of the mining industry, in particular to a multi-function measuring device and method for the coefficient of dilation based on the principle of a connector, and a method for measuring the water absorption rate. Background technique [0002] After the mining of the ore seam, the roof rock will collapse and break, and the volume of the broken rock will be larger than that of the whole state. This property is called the broken bulk of the rock. The crushing property of rock can be expressed by the ratio of the volume of the rock in the loose state after crushing to the volume of the rock in the whole state before crushing, and this value is called the crushing coefficient. [0003] The volume of the broken rock is not easy to calculate, and the study of the breaking and compaction characteristics of the broken rock is of great significance to the analysis of mining subsidence, residual subsidence of t...

AI Technical Summary

Problems solved by technology

In the prior art, the coefficient of disintegration can only be calculated based on empirical formulas. However, due to the different rock compositions in different mining areas, and various objective conditions such as formation depth and water content are also different, the coefficient of dilatation calculated by the prior art Generally, there is a big discrepancy with the actual situation. When calculating the subsequent settlement, it is calculated based on the broken expansion coefficient obtained by the above method, and the deviation is larger, which will directly endanger the safety of the mining area.

Images