Application field of carbon dioxide fracturing
According to the technical characteristics of carbon dioxide fracturing device, can be widely used in coal mine, coal mine, open pit, underground blasting field, and can be used as a source for Megatron detection;
In the field of coal mine can be used for deep presput blasting through coal (rock) tunneling working face, coal, gas, coal and gas production, strengthen the prevention and control of coal seam blasting dust, forced caving, coal block, roadway repair (heave) etc..
3, technical process
Has now formed carbon dioxide blasting quarrying technology, carbon dioxide enhanced coalbed methane drainage technology, carbon dioxide carbon dioxide Fracturing Comprehensive Gas Prevention and control technology, fracturing device working face excavation technology, carbon dioxide fracturing for enhanced dust technology, carbon dioxide fracturing device forced caving coal injection technology, carbon dioxide fracturing for dredging technology, carbon dioxide fracturing is broken remove the carbon dioxide fracturing technology and device of fire prevention and control technology etc..
4, application effect
1. The application of deep hole pre splitting blasting technology in soft outburst coal seam is used:
Using carbon dioxide fracturing device after blasting borehole gas emission is greatly improved (20~40 times), coal seam permeability coefficient is greatly improved (17~22 times), decrease 70~80%, increase 8~12 times the radius of influence of borehole drilling natural gas emission attenuation coefficient of recovery.
2. The application of coal falling in coal roadway is indicated:
(1) carbon dioxide fracturing blasting is powerful, can achieve in traditional coal blasting and blasting effect, the ability to control, through the selection of different energy release tablets, carbon dioxide and filling weight of the heating pipe control; also with coal throwing quantity, large blocks, thrown into a short distance, block rate of more than 60%, Stoker the distance 2~3m.
(2) less demand for additional equipment
The use of carbon dioxide in the driving test, in addition to the need to match the cause of the crack and the impact of the drill bit, there is no other additional equipment requirements.
(3) the number of blasting holes is small
Taking 10m2 as an example, the use of carbon dioxide fracturing device only need 8~10 drilling, reduce about 70% of the amount of drilling.
(4) less harmful gas
Carbon dioxide and carbon monoxide and other gases, which are produced by the full section burst of carbon dioxide fracturing device, are less, and there has never been an over limit phenomenon.
(5) other harmful effects
After the carbon dioxide fracturing device not only will not produce shock wave, it will not produce large blasting noise and dust. Due to the production of toxic and harmful gas less, no shock and sound, can create a good environment for the underground blasting, is conducive to the work of the health of workers and physical and mental health