The method of hydraulic fracturing chemical expansion agent filling rapid excavation roadway
A chemical expansion agent and hydraulic fracturing technology, which is applied in tunnels, earthwork drilling, boreholes/well components, etc., can solve problems such as cumbersome procedures and unoptimistic speed of roadway excavation
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[0019] The specific implementation manners of the present invention will be further described below.
[0020] A method for filling a rapid excavation roadway with a hydraulic fracturing chemical expansion agent is implemented, and the method is carried out according to the following steps.
[0021] Step 1. Drill four holes on the excavation surface with a distance of 20-30m from the working face by using the water-exploring drill. The depth is about 100-500m. There are two main purposes of drilling, one is to explore water in advance, and the other is described in the following steps.
[0022] Step 2. Use a slotted drill to open a wedge-shaped slot every 4-7m in the edge drilled hole. From the bottom of the hole, the slots are respectively the first, the second, ... until the hole is reached, and the slotted drill is now It is widely used in this field, and its structure and performance are well known to those skilled in the art.
[0023] Step 3. Connect the water injection ...
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