Simulation experiment method for drilling-blocking prevention of rock drill in cave

A technology for simulating experiments and rock drills, applied in the hydraulic field, can solve the problems of heavy equipment, inefficient work, complicated structures, etc., and achieve the effects of reducing wear and tear, reducing labor intensity, and improving machine motion accuracy.

Inactive Publication Date: 2015-06-10
WUXI WELL ELECTRO HYDRAULIC EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing hydraulic system components have many problems from different perspectives such as operation methods, working methods, and complicated structures, which lead to inefficient work, heavy equipment weight, and high costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] According to the embodiment of the present invention, the rock drilling machine anti-karst cave drilling simulation experiment method, its main steps include:

[0012] ⑴First, control the rod unloading mechanism to pressurize the drill pipe, so that the rotary pressure is stabilized at a pressure value of 12MPa;

[0013] (2) During the rock drilling process of the simulated down-the-hole drilling rig, control the propulsion handle of the driver's cab to pressurize the propulsion mechanism, so that the propulsion pressure is stabilized at a pressure value of 8MPa, and simulate the normal propulsion state of the down-the-hole drilling rig during the rock drilling process;

[0014] ⑶ Manipulate the propulsion handle to release the pressure of the propulsion mechanism, so that the propulsion pressure suddenly drops to 5Pa, simulating the stuck drill in the karst cave, which is less than the critical propulsion pressure value of the anti-karst cave stuck drill, which is the s...

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PUM

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Abstract

The invention discloses a simulation experiment method for drilling-blocking prevention of a rock drill in a cave. The method comprises the following steps of: firstly, controlling a rod-disassembling mechanism to pressurize a drilling rod to cause a pressure value of rotary pressure to be stabilized to 12MPa; in the process of the simulation of drilling rocks by a down-the-hole drill, controlling a propulsion handle in an operator cab to pressurize a propulsion mechanism to cause a pressure value of propulsion pressure to be stabilized to 8MPa, and simulating a normal propulsion state of the down-the-hole drill in the process of drilling the rocks; controlling the propulsion handle to depressurize the propulsion mechanism to reduce the propulsion pressure to 5MPa suddenly, and simulating a drilling-blocking phenomenon in the cave and wherein a setting value of a pressure relay of a propulsion circuit is 3MPa, which is less than a critical propulsion pressure value of the drilling-blocking prevention in the cave; and drawing a change curve of the propulsion pressure with changes with time in the process. The method provided by the invention has the beneficial effects that the drilling-blocking problem is solved, the normal drilling operation of the rock drill is ensured, the service life of the rock drill is prolonged, and the body of the rock drill can be assisted to be stressed.

Description

technical field [0001] The invention relates to the field of hydraulic technology, in particular to a method for simulating a rock drilling machine anti-karst cave drill sticking simulation experiment. Background technique [0002] The hydraulic system has the advantages of large power, good adjustability of working pressure and flow, and heat can be brought back to the oil tank. The hydraulic system device can generate more power than other devices. Under the same power, the hydraulic device is small in size, Light weight, high power density, compact structure. The down-the-hole drilling rig is a kind of engineering machinery for drilling minerals and rocks. It is a device in which the impactor dives into the hole and directly impacts the drill bit, and the rotary mechanism drives the drill pipe to rotate outside the hole to drill into the rock. It is mainly used for open-pit mining, Rock drilling in various projects such as building foundations, water conservancy, power s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/08
Inventor 解正云
Owner WUXI WELL ELECTRO HYDRAULIC EQUIP CO LTD
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