Zipline adventures without professional guidance are extremely risky, and it is strongly recommended not to try. However, if you have to operate by yourself for special reasons, please be sure to treat every link with caution and strictly follow the following principles to minimize the danger.： --- ###**1. Preliminary preparation: Risk awareness and basic research** 1. **Thoroughly understand the zipline system** -Study the physical principles of the zipline (such as pulleys, braking mechanisms, rope tension, etc.), and confirm whether the equipment meets engineering standards (such as the standards of the International High Altitude Association). - Check the historical accident records and maintenance logs of the zipline (if possible) to avoid using old or unverified facilities. 2. **Law and Insurance** -Confirm whether the public is allowed to use the zipline at the location to avoid legal disputes due to illegal trespassing. -Check whether personal insurance covers high-risk activities, and some insurance expressly precludes unqualified expeditions. --- ###**2. Equipment inspection: Technical details cannot be compromised** 1. **Equipment integrity verification** -**Rope**: Check for wear, corrosion or broken wire (if the wire rope break rate exceeds 10%, it will not be available), and use a caliper to measure whether the diameter meets the safety range. -**Connecting parts**: To ensure that the metal buckle is free of cracks, the lock must pass the “three-action test” (twist, pull, shock) to confirm the lock. -**Pulley and brake**: Test whether the pulley rotates smoothly and whether the brake device can work effectively under different weights. 2. **Scientific selection of personal equipment** -**Seat belts**: UIAA or CE certified full-body seat belts must be used, and half-body seat belts for rock climbing must be avoided. -**Helmet**: It needs to cover the back of the head, comply with EN 12492 standard, and check whether the internal foam is aging. -**Gloves**: Choose leather or cut-resistant gloves to prevent rope friction and burns. --- ###**3. Environmental and physical risk assessment** 1. **Dynamic monitoring of meteorological data** -Use professional weather radar apps (such as Windy) to monitor wind speed in real time (more than 15m/s needs to be terminated), lightning warning and precipitation probability. -Calculate the height difference and sliding time at both ends of the zipline to avoid excessive impact at the end due to slippery conditions. 2. **Investigation of medical contraindications** -Confirm that there are no potential health risks such as heart disease, hypertension, dizziness, etc., and that you have not drunk alcohol or taken drugs that affect your judgment recently. -Perform a simple balance test (such as standing on one foot with eyes closed for more than 30 seconds) and a grip strength test (the grip strength needs to reach more than 40kg). --- ###**Fourth, the engineering-level specification of the operation process** 1. **Mechanical verification and simulation testing** -Use a dynamometer to verify the load-bearing capacity of the anchor (at least 5 times the user's weight). -Perform taxiing simulation in a low-risk environment (such as 1 meter off the ground) to test the braking response time and emergency stop operation. 2. **Redundant protection system construction** -Set up a double backup rope (the work rope is independent of the safety rope), and use redundant knots such as “Italian half buckle”. - Wear two sets of independent connecting devices to ensure that a single point of failure will not cause a fall. --- ###**5. Emergency plan: from theory to actual combat** 1. **Communication and rescue preview** -Carry a satellite phone or walkie-talkie (to ensure that the frequency band is interference-free), and agree on an emergency code with the ground personnel in advance (such as three short beeps indicating the need for rescue). -Learn single-rope ascending/descending techniques (such as the Prussian knot), and carry rope grabbers, straps and other self-rescue tools. 2. **Trauma medical disposal ability** -Master the techniques of arterial hemostasis and fracture fixation, and carry a CAT tourniquet and SAM splint with you. -Predict possible injuries: falling from high altitude (spine protection), rope friction burns (sterile dressing treatment). --- ###**6. Alternatives and ethical considerations** -**Alternatives are highly recommended**： Even if all the above steps are completed, unqualified operation is still a very high-risk behavior. It is recommended to participate in formal zipline projects instead (check operator qualifications such as ACCT certification), or choose a low-altitude zipline experience. -**Ethical responsibility**： If an accident occurs, it may consume a lot of public rescue resources and cause psychological effects on subsequent users. --- **Final reminder**: The fault tolerance rate of the zipline is extremely low, and a single mistake may lead to irreversible consequences. Professional guidance is not only the transfer of technology, but also the control of systemic risks. Please leave the spirit of adventure to safe and legal activities.