A gas pressure measurement drilling filling sealing material and its application method

Abstract

The invention relates to a gas pressure measurement drilling filling and sealing material and its application method. The drilling filling and sealing material consists of 88-92% composite superabsorbent resin, 5-7% composite cellulose ether and 3-3% polyacrylamide. 5% composition. The method of using the material is to put the dry material into the hydrophilic pouch and fix it on the rear end of the flower tube for gas pressure measurement, wherein the hydrophilic pouch is composed of 30-50% hydrophilic surfactant solution It is made of composite cotton material after soaking and drying. The gas pressure measurement drilling filling sealing material involved in the present invention has good performance adjustability, drilling condition adaptability and drilling sealing performance, and can effectively solve the problem of sealing and pressure measurement in the grouting process of gas pressure measurement drilling with different lengths Tube blockage; at the same time, the material also has the characteristics of less usage, low cost, low labor intensity, safety and environmental protection.

Description

A kind of gas pressure measurement hole filling sealing material and using method thereof technical field The present invention relates to underground coal mine gas pressure measurement boreholes and other boreholes that need to carry out deep grouting. The field of sealing, in particular, relates to a gas pressure measurement hole filling sealing material and a method for using the sealing material. Background technique At present, there are about 1,700 high gas and coal and gas outburst mines in my country, accounting for about one-third of the total number of mines one. Coal seam gas pressure is one of the important characterization parameters of coal seam gas occurrence conditions. One of the main basis for mine gas disaster prevention and gas drainage. Therefore, timely and accurate determination of coal seam gas pressure is important for high Gas and coal and gas outburst mines are of great significance. Whether the borehole sealing is accurate or not in the...

AI Technical Summary

Problems solved by technology

However, in the actual drilling sealing process, due to the long sealing length of the drilling hole and the serious water accumulation in the hole, it is difficult to send the front-end plug sealing materials such as ordinary bladders and kelp to the appropriate position, resulting in most of the gas pressure measurement drilling holes. It is difficult to truly realize the "two blockages and one injection" pressure seal, and there are serious problems such as gas leakage in drilling holes, and there are problems such as small and undetectable coal seam gas pressure, which greatly affects the prevention and control of coal seam gas disasters and coal bed methane drainage. scientific implementation of