A water injection formula for coal seam water injection to reduce impact tendency and a detection device for coal seam water injection effect

Abstract

The invention relates to the field of coal mine dynamic disaster prevention and control, in particular to a water injection formula for coal seam water injection to reduce impact tendency. According to weight percentage, it is composed of the following raw materials: 0.1%-1% lauroyl citrate, 0.1%-1% sodium dodecylbenzenesulfonate, 1%-3% potassium chloride and the rest is water. The detection device for coal seam water injection effect is equipped with a microwave device box inside the device; microwave generating equipment is installed above the microwave device box, and a weighing tray is installed at the bottom of the interior, and a sensor pillar is installed under the weighing tray. The bottom plate of the device box is connected to the gravity sensor on the bottom plate of the device, and the gravity sensor is connected to the data collector and data recorder in turn; the side of the microwave device box close to the device box is provided with a microwave device door, and the device box is equipped with a The door body of the device, the other side of the microwave device box is provided with a drying air inlet pipe, which communicates with the outside of the device; the top of the microwave device box is equipped with a drying air duct, and the drying air duct passes through the fan It communicates with the outside of the device; the inside of the device is equipped with a battery.

Description

technical field [0001] The invention relates to the field of coal mine dynamic disaster prevention and control, in particular to a water injection formula for reducing the impact tendency of coal seam water injection and a detection device for coal seam water injection effect. Background technique [0002] Rockburst in coal mines is due to the sudden release of energy accumulated in the coal rock around the roadway when the pressure exceeds the strength limit of the coal rock mass, causing vibration and destruction of the coal rock mass, damage to supports and equipment, and collapse of part of the roadway. Mine safety poses a great threat. Coal seam water injection is an important technical means to prevent and control coal mine dynamic disasters. The application of coal seam water injection can effectively reduce the dust production during coal seam mining, reduce the stress concentration of coal seams, prevent rock bursts, coal and gas outburst accidents, and at the same ...

AI Technical Summary

Problems solved by technology

The drilling cuttings method is mainly used to predict the coal seam rock burst by measuring the torque and thrust value changes generated when the drill pipe of the coal electric drill rotates the cuttings. This method is greatly affected by physical factors such as the water content of the coal seam after water injection. , and the on-site operation is complicated and the test results are inaccurate

The geoacoustic method is a method for predicting coal seam rockburst through changes in rock mass acoustic emission parameters and local stress fields. However, this method is greatly affected by the physical properties of coal seams and is not suitable for soft rock formations and high homogeneity. coal seam

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