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Water-Jet Coal Seam Cavitation and Pressure Relief Device

Product Introduction

Based on ultra-high-pressure water jet technology, this device is specifically designed for coal seam cavity formation, pressure relief, and gas control in underground coal mines. It delivers a maximum output pressure exceeding 31.5 MPa. By directing high-pressure water jets to impact the coal seam, it forms deep-penetration cavities, reduces stress concentration in the coal masses, and mitigates the risk of gas outbursts. The modular hydraulic drive system enables precise control of jet angle and flow rate, adapting to coal seams of varying hardness. Integrated coal seam water injection functionality allows for simultaneous coal wetting during cavity formation, improving permeability and reducing dust. The entire machine is equipped with an intelligent control system and a tracked chassis, supporting remote operation and real-time monitoring, and is adaptable to narrow roadways and various complex terrains.

Product Parameters

Specifications

Parameter

Unit

Model

KXS-8-113

KXS-8-133

KXS-8-153

Integrated System

Cavity Diameter

mm

500

Water Consumption

L/min

200

Water Jet Activation Pressure

MPa

6

Water Jet Rated Working Pressure

MPa

8

Clear Water Pump

Rated Working Pressure

MPa

31.5

Rated Flow Rate

L/min

200

Motor Power

kW

110

Drill Rig

Rated Torque

N·m

4200 ~ 1140

4600 ~ 1100

Rated Rotational Speed

r/min

70 ~ 230

60 ~ 220

Dill Bit Diameter

mm

113

133

153

Drill Pipe Diameter

mm

73

Motor Power

kW

55

Dewatering  Unit

Rated Working Pressure

MPa

18

Processing Capacity

m³/h

50

Motor Power

kW

15