Water injection formula for reducing impact tendency of coal seam water injection and 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 reducing the impact tendency of coal seam water injection. The water injection formula comprises, by weight, 0.1-1% of lauryl citrate, 0.1-1% of sodium dodecyl benzene sulfonate, 1-3% of potassium chloride, and the balance water. A detection device for a coal seamwater injection effect is provided, and a microwave device box body is arranged in the device; a microwave generating device is arranged on the upper portion inside the microwave device box body, a weighing tray is arranged on the lower portion inside the microwave device box body, a sensor support is arranged on the lower portion of the weighing tray, the sensor support penetrates through a bottom plate of the microwave device box body and is connected with a gravity sensor on a bottom plate of the device, and the gravity sensor is sequentially connected with a data acquisition device and adata recorder; a microwave device door body is arranged on the side, close to a device box body, of the microwave device box body, a device door body is arranged on the device box body, a drying air inlet pipe is arranged on the other side of the microwave device box body, and the drying air inlet pipe is communicated with the outside of the device. The top of the microwave device box body is provided with a drying air outlet pipe which is communicated with the outside of the device through a fan; a battery is arranged in the device.

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 ...

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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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