When excavators operate in mountainous areas, they face challenges such as complex terrain (steep slopes, gullies, gravel), limited visibility, and large load fluctuations. Strict control is required from four dimensions: safety protection, equipment adaptation, operation specifications, and environmental response to avoid equipment damage, operation accidents, or efficiency loss. The specific precautions are as follows:

I. Before Operation: Conduct Terrain Survey and Equipment Inspection to Eliminate Basic Risks

Most core hazards of mountain operation stem from "unknown terrain" and "insufficient equipment adaptation". Two preparations must be completed first before operation:

Conduct a Comprehensive Terrain Survey and Plan the Operation Route

First, survey the operation area on foot or by drone, and mark risk points such as steep slopes (slopes exceeding 15° require key attention), hidden gullies, soft soil layers, and rock piles to prevent the excavator from rolling over or getting stuck in unknown hazardous areas. At the same time, plan the route for "operation area - passage area - emergency refuge area":

• The passage route must avoid sections with a cliff on one side and slopes exceeding 25°, and its width must be at least 0.5 meters wider than the excavator's track;

• The emergency refuge area should be a flat and solid open space, facilitating temporary parking in case of emergencies (such as track slipping, engine failure).

Conduct Targeted Equipment Inspection and Enhance Mountain Adaptability

In addition to the conventional inspection of engine oil, hydraulic oil, and coolant, focus on strengthening components related to "anti - vibration, anti - rollover, and grip":

• Track system: Check the wear degree of track shoes (replace if wear exceeds 30% to prevent slipping on mountain gravel) and track tension (too loose is prone to derailment, too tight is prone to breakage). If the operation area has a lot of gravel, track guards can be installed;

• Braking and stability system: Check the sensitivity of the travel brake and swing brake (when parking on a mountain steep slope, both the travel brake and parking brake must be activated at the same time), and ensure the reliability of the hydraulic locks for the bucket and boom (to prevent the working device from falling when parked);

• Safety devices: Confirm that the anti - rollover alarm device (if equipped) and the cab guardrail (ROPS) are in good condition to prevent cab damage caused by falling rocks or vibration.

II. During Operation: Strictly Abide by Operation Specifications and Control Risky Actions

The core of mountain operation is "stability" — avoid sudden acceleration, sudden steering, and overload actions, and adjust the operation posture according to the terrain:

Control the Operation Posture to Avoid Rollover/Sinking

• When operating on a steep slope, always keep the excavator's "tracks parallel to the slope surface" and prohibit parking horizontally on the steep slope (prone to rollover). If the slope exceeds 20°, use the bucket for auxiliary support (the bucket touches the ground slightly to form a triangular support with the tracks), and reduce the movement range of the boom and arm during operation to avoid imbalance caused by center of gravity shift;

• When operating on soft soil layers or gravel piles, prohibit digging too deep at one time (the single digging depth should not exceed 2/3 of the bucket capacity), and dig slowly (to prevent track sinking due to soil collapse). If the tracks start to sink, stop the operation immediately, pad gravel or wooden boards on both sides of the tracks with the bucket to enhance support, and then drive out slowly.

Optimize the Action Logic to Reduce Equipment Load

• Mountain excavation mostly involves "transportation up and down slopes". It is forbidden to perform compound actions of "lifting the bucket + fast steering" on steep slopes (prone to overloading the hydraulic system and unstable center of gravity). Instead, first lower the bucket to be close to the ground, drive smoothly to the top/bottom of the slope, and then adjust the bucket height for unloading;

• When encountering large rocks, it is forbidden to hit them hard with the bucket (prone to damaging the bucket teeth and boom). Instead, use a breaker to break them (if equipped) or use the bucket to "pry" from the side of the rock. Dig only after the rock is loosened. If the rock is buried deep, first clean the surrounding soil layer to expose the bottom of the rock before operation.

Pay Attention to Visibility and Surrounding Environment

• Visibility during mountain operation is easily blocked by trees and gullies. Before operation, clean up obstacles around the cab. If necessary, arrange a dedicated person to direct (the commander stands within the excavator's field of vision and away from the operation radius). If the bucket position cannot be seen during digging, stop the machine to observe to avoid mistakenly digging the supporting soil layer below;

• Operate away from the edge of the mountain (at least 5 meters away from the edge) to prevent mountain collapse caused by digging. If there is water seepage or loose soil in the operation area, evacuate immediately and continue only after confirming safety.

III. Equipment Maintenance: Strengthen Post - Mountain Operation Maintenance to Extend Service Life

During mountain operation, equipment is easily affected by gravel impact, dust intrusion, and vibration. Targeted maintenance is required after operation to avoid fault accumulation:

Cleaning and Inspection: Focus on Removing Impurities and Checking for Damage

• Immediately clean the gravel between the tracks after operation (use a high - pressure water gun or auxiliary removal with the bucket) to prevent gravel from getting stuck in the track chain, which may 加剧 wear during travel. At the same time, check whether the track shoes and bucket teeth are deformed or broken (if the bucket teeth are severely worn, replace them in time to avoid affecting excavation efficiency);

• Clean the heat dissipation nets of the engine and hydraulic oil tank (there is a lot of dust in mountainous areas, which is easy to block the heat dissipation nets and cause equipment overheating). Check whether the hydraulic pipeline joints are leaking (vibration may cause loose joints). If pipeline wear or joint leakage is found, repair immediately.

Lubrication and Adjustment: Compensate for Losses Caused by Vibration

• Mountain vibration will accelerate the wear of each hinge point (between the boom and the machine body, between the arm and the boom). After operation, add grease to the hinge points (add at least once every 8 hours of operation according to the equipment manual) to ensure smooth movement;

• Check the oil level of the travel motor and swing motor (vibration may cause oil sloshing; if the oil level is too low, replenish it in time). At the same time, check the wear of the brake pads of the braking system (frequent braking during steep slope operation leads to fast wear of brake pads; replace them if the wear exceeds the limit).

IV. Emergency Handling: Clarify the Response Process for Emergencies

Emergencies such as "track derailment, engine shutdown, and rollover warning" are prone to occur during mountain operation. The response methods must be clarified in advance to avoid expanding risks due to panic:

Track Derailment: Prohibit Forced Startup and Reset Manually

If derailment occurs on a steep slope or soft ground, activate the parking brake immediately, support the ground with the bucket (to prevent the equipment from sliding), then turn off the engine and check the derailed part (whether the track chain is deformed or the track shoes are damaged). If the derailment is slight, manually adjust the track position and use the bucket to slowly push the track to reset it. If the derailment is severe, call a tow truck and prohibit forced startup of the equipment (which may cause track chain breakage).

Engine Shutdown: Restart Only After Ensuring Safety

If the engine shuts down on a steep slope, pull the parking brake immediately, support the ground with the bucket, confirm that there is no risk of equipment sliding, and then try to restart. If the restart fails, check whether the fuel and engine oil are sufficient (vibration in mountainous areas may cause air to enter the fuel pipeline; exhaust the air before restarting). If the problem cannot be solved, contact maintenance personnel and prohibit long - term stay on the steep slope.

Rollover Warning: Stop Actions Immediately and Prioritize Personnel Safety

If the equipment is found to be tilting during operation (obvious shaking of the cab or activation of the anti - rollover alarm), stop all actions immediately, slowly lower the bucket to the ground (to enhance support), and then the operator slowly evacuates the cab (evacuate away from the direction of the equipment's possible rollover). If a rollover has occurred, prohibit forced startup of the equipment and conduct rescue only after evaluation by professionals.

Conclusion

The core of excavator operation in mountainous areas is "safety first, prevention first" — survey the terrain and adapt the equipment before operation, stabilize the posture and optimize actions during operation, strengthen maintenance after operation, and clarify the emergency process at the same time. Only by deeply combining "terrain characteristics" with "equipment performance and operation specifications" can we improve operation efficiency and reduce equipment loss on the premise of ensuring safety.